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UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 10-Q
QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended June 30, 2020
Commission File Number 001-33289
esgr-20200630_g1.jpg
ENSTAR GROUP LIMITED
(Exact name of Registrant as specified in its charter)
BERMUDAN/A
(State or other jurisdiction of incorporation or organization)(I.R.S. Employer Identification No.)
Windsor Place, 3rd Floor, 22 Queen Street, Hamilton HM JX, Bermuda
(Address of principal executive offices, including zip code)
Registrant’s telephone number, including area code: (441292-3645
Securities registered pursuant to Section 12(b) of the Act:
Title of Each ClassTrading Symbol(s)Name of Each Exchange on Which Registered
Ordinary shares, par value $1.00 per shareESGRThe NASDAQ Stock MarketLLC
Depositary Shares, Each Representing a 1/1,000th Interest in a 7.00% ESGRPThe NASDAQ Stock MarketLLC
Fixed-to-Floating Rate Perpetual Non-Cumulative Preferred Share, Series D, Par Value $1.00 Per Share
Depositary Shares, Each Representing a 1/1,000th Interest in a 7.00%ESGROThe NASDAQ Stock MarketLLC
Perpetual Non-Cumulative Preferred Share, Series E, Par Value $1.00 Per Share
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  þ    No  ¨
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).    Yes  þ    No  ¨
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and "emerging growth company" in Rule 12b-2 of the Exchange Act.
Large accelerated filerþAccelerated filer¨Non-accelerated filer¨Smaller reporting companyEmerging growth company
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes      No  þ
As at August 7, 2020, the registrant had outstanding 18,636,497 voting ordinary shares and 3,509,682 non-voting convertible ordinary shares, each par value $1.00 per share.


Table of Contents


Enstar Group Limited
Quarterly Report on Form 10-Q
For the Period Ended June 30, 2020

Table of Contents
 
  Page
PART I
Item 1.
Item 2.
Item 3.
Item 4.
PART II
Item 1.
Item 1A.
Item 2.
Item 6.


Table of Contents

PART I — FINANCIAL INFORMATION
ITEM 1.   FINANCIAL STATEMENTS
CONSOLIDATED FINANCIAL STATEMENTSPage

1

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ENSTAR GROUP LIMITED
CONDENSED CONSOLIDATED BALANCE SHEETS
As of June 30, 2020 (unaudited) and December 31, 2019
June 30, 2020December 31, 2019
(expressed in thousands of U.S. dollars, except share data)
ASSETS
Short-term investments, trading, at fair value$10,216  $51,490  
Short-term investments, available-for-sale, at fair value (amortized cost: 2020 — $87,977; 2019 — $128,311; net of allowance: 2020 — $nil)
87,770  128,335  
Fixed maturities, trading, at fair value5,365,157  6,143,335  
Fixed maturities, available-for-sale, at fair value (amortized cost: 2020 — $2,180,684; 2019 — $1,537,815; net of allowance: 2020 — $3,673)
2,215,211  1,538,052  
Funds held - directly managed1,168,856  1,187,552  
Equities, at fair value 640,771  726,721  
Other investments, at fair value 3,278,785  2,518,031  
Equity method investments362,398  326,277  
Total investments (Note 5 and Note 11)
13,129,164  12,619,793  
Cash and cash equivalents651,855  624,472  
Restricted cash and cash equivalents336,666  346,877  
Premiums receivable541,450  491,511  
Deferred tax assets (Note 19)
155,245  155,793  
Reinsurance balances recoverable on paid and unpaid losses (net of allowance: 2020 — $143,653) (Note 7)
1,422,670  1,485,616  
Reinsurance balances recoverable on paid and unpaid losses, at fair value (Note 7 and Note 11)
671,384  695,518  
Insurance balances recoverable (net of allowance: 2020 — $8,346) (Note 10)
428,277  448,855  
Funds held by reinsured companies1,466,596  475,732  
Deferred acquisition costs93,256  116,513  
Goodwill and intangible assets (Note 13)
178,552  191,568  
Other assets 703,898  699,081  
Assets held for sale (Note 4)
1,514,902  1,474,770  
TOTAL ASSETS$21,293,915  $19,826,099  
LIABILITIES
Losses and loss adjustment expenses (Note 9)
$8,138,897  $7,247,282  
Losses and loss adjustment expenses, at fair value (Note 9 and Note 11)
2,454,539  2,621,122  
Defendant asbestos and environmental liabilities (Note 10)
808,062  847,685  
Unearned premiums513,308  533,692  
Insurance and reinsurance balances payable573,089  420,546  
Deferred tax liabilities (Note 19)
16,559  16,074  
Debt obligations (Note 14)
1,542,022  1,191,207  
Other liabilities442,845  444,818  
Liabilities held for sale (Note 4)
1,237,595  1,208,531  
TOTAL LIABILITIES15,726,916  14,530,957  
COMMITMENTS AND CONTINGENCIES (Note 21)
REDEEMABLE NONCONTROLLING INTEREST (Note 15)
366,533  438,791  
SHAREHOLDERS’ EQUITY (Note 16)
Ordinary shares (par value $1 each, issued and outstanding 2020: 22,144,399; 2019: 21,511,505):
Voting Ordinary shares (issued and outstanding 2020: 18,634,717; 2019: 18,001,823)
18,635  18,002  
Non-voting convertible ordinary Series C Shares (issued and outstanding 2020 and 2019: 2,599,672)
2,600  2,600  
Non-voting convertible ordinary Series E Shares (issued and outstanding 2020 and 2019: 910,010)
910  910  
Preferred Shares:
Series C Preferred Shares (issued and held in treasury 2020 and 2019: 388,571)
389  389  
Series D Preferred Shares (issued and outstanding 2020 and 2019: 16,000)
400,000  400,000  
Series E Preferred Shares (issued and outstanding 2020 and 2019: 4,400)
110,000  110,000  
Treasury shares, at cost (Series C Preferred shares 2020 and 2019: 388,571)
(421,559) (421,559) 
Joint Share Ownership Plan (voting ordinary shares, held in trust 2020: 565,630)
(566)   
Additional paid-in capital1,835,115  1,836,778  
Accumulated other comprehensive income51,285  7,171  
Retained earnings3,190,104  2,887,892  
Total Enstar Shareholders’ Equity5,186,913  4,842,183  
Noncontrolling interest (Note 15)
13,553  14,168  
TOTAL SHAREHOLDERS’ EQUITY5,200,466  4,856,351  
TOTAL LIABILITIES, REDEEMABLE NONCONTROLLING INTEREST AND SHAREHOLDERS’ EQUITY$21,293,915  $19,826,099  
See accompanying notes to the unaudited condensed consolidated financial statements
2

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ENSTAR GROUP LIMITED
CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS (UNAUDITED)
For the Three and Six Months Ended June 30, 2020 and 2019
Three Months Ended
June 30,
Six Months Ended
June 30,
2020201920202019
(expressed in thousands of U.S. dollars, except share and per share data)
INCOME
Net premiums earned$142,871  $190,962  $302,222  $442,909  
Fees and commission income10,010  6,017  17,538  12,494  
Net investment income94,443  74,271  169,157  149,922  
Net realized and unrealized gains967,608  260,669  338,547  713,429  
Other income (expense)(1,087) 11,025  19,357  16,836  
1,213,845  542,944  846,821  1,335,590  
EXPENSES
Net incurred losses and loss adjustment expenses186,692  146,554  229,992  402,853  
Life and annuity policy benefits  2,194    2,290  
Acquisition costs49,067  51,081  95,110  128,882  
General and administrative expenses144,830  100,676  243,258  198,939  
Interest expense14,018  13,036  27,433  24,072  
Net foreign exchange (gains) losses5,158  (2,579) (6,781) (6,432) 
399,765  310,962  589,012  750,604  
EARNINGS BEFORE INCOME TAXES814,080  231,982  257,809  584,986  
Income tax expense(16,652) (7,698) (11,380) (11,800) 
Earnings (loss) from equity method investments(8,790) 17,713  3,660  26,485  
NET EARNINGS FROM CONTINUING OPERATIONS788,638  241,997  250,089  599,671  
NET EARNINGS (LOSS) FROM DISCONTINUED OPERATIONS, NET OF INCOME TAXES(1,152) (3,943) (3,221) 4,125  
NET EARNINGS787,486  238,054  246,868  603,796  
Net loss attributable to noncontrolling interest19,992  2,713  52,714  4,861  
NET EARNINGS ATTRIBUTABLE TO ENSTAR807,478  240,767  299,582  608,657  
Dividends on preferred shares(8,925) (8,925) (17,850) (18,064) 
NET EARNINGS ATTRIBUTABLE TO ENSTAR ORDINARY SHAREHOLDERS$798,553  $231,842  $281,732  $590,593  
Earnings (loss) per ordinary share attributable to Enstar:
Basic:
Net earnings from continuing operations$37.06  $10.90  $13.16  $27.40  
Net earnings (loss) from discontinued operations(0.03) (0.11) (0.09) 0.11  
Net earnings per ordinary share$37.03  $10.79  $13.07  $27.51  
Diluted:
Net earnings from continuing operations$36.68  $10.81  $13.02  $27.15  
Net earnings (loss) from discontinued operations(0.03) (0.11) (0.09) 0.11  
Net earnings per ordinary share$36.65  $10.70  $12.93  $27.26  
Weighted average ordinary shares outstanding:
Basic21,565,240  21,477,772  21,557,542  21,470,675  
Diluted21,789,242  21,675,451  21,788,331  21,661,769  

See accompanying notes to the unaudited condensed consolidated financial statements
3

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ENSTAR GROUP LIMITED
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED)
For the Three and Six Months Ended June 30, 2020 and 2019
 
Three Months Ended
June 30,
Six Months Ended
June 30,
2020201920202019
 (expressed in thousands of U.S. dollars)
NET EARNINGS$787,486  $238,054  $246,868  $603,796  
Other comprehensive income (loss), net of income taxes:
Unrealized holding gains on fixed income available-for-sale investments arising during the period112,506  1,244  53,771  4,907  
Reclassification adjustment for change in allowance for credit losses recognized in net earnings(10,762)   2,450    
Reclassification adjustment for net realized losses included in net earnings(4,222) (4,218) (4,010) (4,157) 
Unrealized gains (losses) arising during the period, net of reclassification adjustments97,522  (2,974) 52,211  750  
Total cumulative currency translation adjustment(1,205) (1,038) (1,891) (1,839) 
Total other comprehensive income (loss)96,317  (4,012) 50,320  (1,089) 
Comprehensive income883,803  234,042  297,188  602,707  
Comprehensive loss attributable to noncontrolling interest9,616  2,642  46,508  4,706  
COMPREHENSIVE INCOME ATTRIBUTABLE TO ENSTAR$893,419  $236,684  $343,696  $607,413  

See accompanying notes to the unaudited condensed consolidated financial statements

4

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ENSTAR GROUP LIMITED
CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS’ EQUITY (UNAUDITED)
For the Three and Six Months Ended June 30, 2020 and 2019
Three Months Ended
June 30,
Six Months Ended
June 30,
2020201920202019
 (expressed in thousands of U.S. dollars)
Share Capital — Voting Ordinary Shares
Balance, beginning of period$18,610  $17,958  $18,002  $17,950  
Issue of shares25  17  726  25  
Shares repurchased    (93)   
Balance, end of period$18,635  $17,975  $18,635  $17,975  
Share Capital — Non-Voting Convertible Ordinary Series C Shares
Balance, beginning and end of period$2,600  $2,600  $2,600  $2,600  
Share Capital — Non-Voting Convertible Ordinary Series E Shares
Balance, beginning and end of period$910  $910  $910  $910  
Share Capital — Series C Convertible Participating Non-Voting Preferred Shares
Balance, beginning and end of period$389  $389  $389  $389  
Share Capital — Series D Preferred Shares
Balance, beginning and end of period$400,000  $400,000  $400,000  $400,000  
Share Capital — Series E Preferred Shares
Balance, beginning and end of period$110,000  $110,000  $110,000  $110,000  
Treasury Shares (Series C Preferred Shares)
Balance, beginning and end of period$(421,559) $(421,559) $(421,559) $(421,559) 
Joint Share Ownership Plan — Voting Ordinary Shares, Held in Trust
Balance, beginning of period$(566) $  $  $  
Issue of shares    (566)   
Balance, end of period$(566) $  $(566) $  
Additional Paid-in Capital
Balance, beginning of period$1,825,798  $1,809,107  $1,836,778  $1,804,664  
Issue of voting ordinary shares(109) 455  (1,360) 921  
Shares repurchased    (12,433)   
Amortization of share-based compensation9,426  12,640  12,130  16,617  
Balance, end of period$1,835,115  $1,822,202  $1,835,115  $1,822,202  
Accumulated Other Comprehensive Income (Loss)
Balance, beginning of period$(34,656) $13,279  $7,171  $10,440  
Currency translation adjustment
Balance, beginning of period7,862  10,183  8,548  10,986  
Change in currency translation adjustment(1,038) (1,036) (1,724) (1,839) 
Balance, end of period6,824  9,147  6,824  9,147  
Defined benefit pension liability
Balance, beginning and end of period(945) (987) (945) (987) 
Unrealized gains (losses) on available-for-sale investments
Balance, beginning of period(41,573) 4,083  (432) 441  
Change in unrealized gains (losses) on available-for-sale investments86,979  (3,047) 45,838  595  
Balance, end of period45,406  1,036  45,406  1,036  
Balance, end of period$51,285  $9,196  $51,285  $9,196  
Retained Earnings
Balance, beginning of period$2,375,073  $2,335,028  $2,887,892  $1,976,539  
Net earnings787,486  238,054  246,868  603,796  
Net loss attributable to noncontrolling interest19,992  2,713  52,714  4,861  
Dividends on preferred shares(8,925) (8,925) (17,850) (18,064) 
Change in redemption value of redeemable noncontrolling interests16,478  6,247  26,628  5,985  
Cumulative effect of change in accounting principle    (6,148)   
Balance, end of period$3,190,104  $2,573,117  $3,190,104  $2,573,117  
Noncontrolling Interest (excludes Redeemable Noncontrolling Interest)
Balance, beginning of period$13,405  $12,452  $14,168  $12,056  
Purchase of noncontrolling shareholders' interest in subsidiaries  (47)   (47) 
Net earnings (loss) attributable to noncontrolling interest148  204  (615) 600  
Balance, end of period$13,553  $12,609  $13,553  $12,609  
Total Shareholders' Equity$5,200,466  $4,527,439  $5,200,466  $4,527,439  

See accompanying notes to the unaudited condensed consolidated financial statements
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ENSTAR GROUP LIMITED
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)
For the Six Months Ended June 30, 2020 and 2019
Six Months Ended June 30,
20202019
 (expressed in thousands of U.S. dollars)
OPERATING ACTIVITIES:
Net earnings$246,868  $603,796  
Net loss (earnings) loss from discontinued operations, net of income taxes3,221  (4,125) 
Adjustments to reconcile net earnings to cash flows provided by operating activities:
Realized gains on sale of investments(61,406) (25,854) 
Unrealized gains on investments(277,141) (687,575) 
Depreciation and other amortization30,006  15,722  
Earnings from equity method investments(3,660) (26,485) 
Sales and maturities of trading securities2,165,843  2,689,095  
Purchases of trading securities(1,175,992) (2,678,627) 
Other non-cash items11,082  18,187  
Changes in:
Reinsurance balances recoverable on paid and unpaid losses84,827  (179,566) 
Funds held by reinsured companies(990,864) (54,188) 
Losses and loss adjustment expenses741,100  306,509  
Defendant asbestos and environmental liabilities(39,623) (19,056) 
Insurance and reinsurance balances payable152,886  66,639  
Unearned premiums(20,384) 58,228  
Premiums receivable(49,939) 130,435  
Other operating assets and liabilities32,337  (91,293) 
Net cash flows provided by operating activities849,161  121,842  
INVESTING ACTIVITIES:
Acquisitions, net of cash acquired  1,071  
Sales and maturities of available-for-sale securities1,156,786  90,536  
Purchase of available-for-sale securities(1,759,023) (147) 
Purchase of other investments(656,757) (284,600) 
Proceeds from other investments136,592  85,355  
Purchase of equity method investments(33,000) (38,202) 
Dividends from equity method investments237    
Other investing activities(974) (2,844) 
Net cash flows used in investing activities(1,156,139) (148,831) 
FINANCING ACTIVITIES:
Dividends on preferred shares(17,850) (18,064) 
Dividends paid to noncontrolling interest  (11,556) 
Purchase of noncontrolling shareholders' interest in subsidiaries  (47) 
Repurchase of shares(12,526)   
Receipt of loans364,000  1,050,806  
Repayment of loans(14,000) (415,370) 
Net cash flows provided by financing activities319,624  605,769  
EFFECT OF EXCHANGE RATE CHANGES ON FOREIGN CURRENCY CASH AND CASH EQUIVALENTS4,526  (6,436) 
NET INCREASE IN CASH AND CASH EQUIVALENTS17,172  572,344  
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD971,349  901,996  
CASH AND CASH EQUIVALENTS, END OF PERIOD$988,521  $1,474,340  
Supplemental Cash Flow Information:
Income taxes paid, net of refunds$15,450  $522  
Interest paid$26,783  $21,246  
Reconciliation to Consolidated Balance Sheets:
Cash and cash equivalents 651,855  1,032,583  
Restricted cash and cash equivalents336,666  441,757  
Cash, cash equivalents and restricted cash$988,521  $1,474,340  
See accompanying notes to the unaudited condensed consolidated financial statements
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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Tabular information expressed in thousands of U.S. dollars except share and per share data)

1. SIGNIFICANT ACCOUNTING POLICIES
Basis of Preparation
These unaudited condensed consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America ("U.S. GAAP") for interim financial information. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of management, these financial statements reflect all adjustments consisting of normal recurring items considered necessary for a fair presentation under U.S. GAAP. The results of operations for any interim period are not necessarily indicative of results for the full year. These financial statements should be read in conjunction with the consolidated financial statements and related notes included in our Annual Report on Form 10-K for the year ended December 31, 2019. All significant inter-company transactions and balances have been eliminated. In these notes, the terms "we," "us," "our," "Enstar," or "the Company" refer to Enstar Group Limited and its consolidated subsidiaries. Certain prior period amounts have been reclassified to conform to the current period presentation as described in further detail in Note 4 - "Divestitures, Held-for-Sale Businesses and Discontinued Operations." These reclassifications had no impact on net earnings.
Use of Estimates
The preparation of financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions that affect the reported amount of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Our actual results may differ materially from these estimates. Results of changes in estimates are reflected in earnings in the period in which the change is made. Accounting policies that we believe are most dependent on assumptions and estimates are considered to be our critical accounting policies and are related to the determination of:
liability for losses and loss adjustment expenses ("LAE");
reinsurance balances recoverable on paid and unpaid losses;
defendant asbestos and environmental liabilities and related insurance balances recoverable;
valuation allowances on reinsurance balances recoverable and deferred tax assets;
impairment charges, including credit allowances on investment securities classified as available-for-sale ("AFS"), and impairments on goodwill, intangible assets and deferred charge assets;
gross and net premiums written and net premiums earned;
fair value measurements of investments;
fair value estimates associated with accounting for acquisitions;
fair value estimates associated with loss portfolio transfer reinsurance agreements for which we have elected the fair value option; and
redeemable noncontrolling interests.

Updated Accounting Policies
The following accounting policies have been updated to reflect our adoption of Accounting Standards Update ("ASU") 2016-13 - Financial Instruments - Credit losses - Measurement of Credit Losses on Financial Instruments, effective January 1, 2020 as described in detail below under "New Accounting Standards Adopted in 2020."
Short-term investments and fixed maturity investments
We perform a detailed analysis every reporting period to identify any credit losses on our investment portfolios not measured at fair value through net earnings.
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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
Some of the factors that we consider when assessing whether an allowance for credit losses is required on our debt securities include: (1) the extent to which the fair value has been less than the amortized cost; (2) the financial condition, near-term and long-term prospects of the issuer, including the relevant industry conditions and trends, and implications of rating agency actions and offering prices; (3) the likelihood of the recoverability of principal and interest; and (4) whether it is more likely than not that we will be required to sell the security prior to an anticipated recovery in value.
With effect from January 1, 2020, credit losses on our AFS debt securities are recognized through an allowance account which is deducted from the amortized cost basis of the security, with the net carrying value of the security presented on the consolidated balance sheet at the amount expected to be collected. To calculate the amount of the credit loss, we compare the present value of the expected future cash flows with the amortized cost basis of the AFS debt security, with the amount of the credit loss recognized being limited to the excess of the amortized cost basis over the fair value of the AFS debt security, effectively creating a “fair value floor”. See "New Accounting Standards Adopted in 2020" below for the discussion on our adoption of the credit losses standard.
For our AFS debt securities that we do not intend to sell or for which it is more likely than not that we will not be required to sell before an anticipated recovery in value, we separate the credit loss component of any unrealized losses from the amount related to all other factors and report the credit loss component in net realized investment gains (losses) in our consolidated statements of earnings. The unrealized losses related to non-credit factors is reported in other comprehensive income. The allowance for credit losses account is adjusted for any additional credit losses, write-offs and subsequent recoveries.
For our AFS debt securities where we record a credit loss, a determination is made as to the cause of the credit loss and whether we expect a recovery in the fair value of the security. For our AFS debt securities where we expect a recovery in fair value, the constant effective yield method is utilized, and the investment is amortized to par.
For our AFS debt securities that we intend to sell or for which it is more likely than not that we will be required to sell before an anticipated recovery in fair value, the full amount of the unrealized loss is included in net realized investment gains (losses). The new cost basis of the investment is the previous amortized cost basis less the credit loss recognized in net realized investment gains (losses). The new cost basis is not adjusted for any subsequent recoveries in fair value.
We report the investment income accrued on our AFS debt securities within other assets and therefore separately from the underlying AFS debt securities. In addition, due to the short-term period during which accrued investment income remains unpaid, which is typically six months, since the coupon on our AFS debt securities is paid semi-annually, we have elected not to establish an allowance for credit losses on our accrued investment income balances. Accrued investment income is written off through net realized investment gains (losses) at the time the issuer of the debt security defaults or is expected to default on payments.
Uncollectible debt securities are written off when we determine that no additional payments of principal or interest will be received.
Reinsurance Balances Recoverable on Paid and Unpaid Losses
Amounts recoverable from reinsurers are estimated in a manner consistent with the underlying liability for losses and loss adjustment expenses. We report our reinsurance balances recoverable on paid and unpaid losses net of an allowance for estimated uncollectible amounts. The allowance is based upon our ongoing review of the outstanding balances and reflects factors such as the duration of the collection period, credit quality, changes in reinsurer credit standing, default rates specific to the individual reinsurer, the geographical location of the reinsurer, contractual disputes with reinsurers over individual contentious claims, contract language or coverage issues, industry analyst reports and consensus economic forecasts.
A probability-of-default methodology that reflects current and forecasted economic conditions is used to estimate the allowance for uncollectible reinsurance due to credit-related factors. See "New Accounting Standards Adopted in 2020" below for the discussion on our adoption of the credit losses standard.
The allowance also includes estimated uncollectible amounts related to dispute risk with reinsurers. Amounts deemed to be uncollectible, including amounts due from known insolvent reinsurers, are written off against the allowance.
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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
Changes in the allowance, as well as any subsequent collections of amounts previously written off, are reported as part of the net incurred losses and loss adjustment expenses in our consolidated statements of earnings.
On an ongoing basis, we also evaluate and monitor the financial condition of our reinsurers under voluntary schemes of arrangement to minimize our exposure to significant losses from potential insolvencies.
Premiums Receivable and Unearned Premium Reserves
Premiums are recognized as revenues on a pro-rata basis over the coverage period. Unearned premium reserves represent the unexpired portion of policy premiums. For retrospectively rated contracts as well as those whose written premium amounts are recorded based on premium estimates at inception, accrued premiums arising from changes to these estimates are included in premium balances receivable where appropriate. Premium balances receivable are reported net of an allowance for expected credit losses as appropriate. The allowance is based upon our ongoing review of amounts outstanding, historical loss data, including delinquencies and write-offs, current and forecasted economic conditions and other relevant factors. However, the credit risk on our premiums receivable balances is substantially reduced where we have the ability to cancel the underlying policy if the policyholder does not pay the related premium.

New Accounting Standards Adopted in 2020
ASU 2020-04 – Reference Rate Reform
In March 2020, the Financial Accounting Standards Board ("FASB") issued ASU 2020-04 – Reference Rate Reform – Facilitation of the Effects of Reference Rate Reform on Financial Reporting, which is codified in Accounting Standards Codification ("ASC") 848 and which provides entities with temporary optional expedients and exceptions to the existing US GAAP guidance on contract modifications and hedge accounting to ease the financial reporting burdens related to the expected market transition from the London Inter-bank Offered Rate ("LIBOR") and other inter-bank offered rates to alternative reference rates, such as the Secured Overnight Financing Rate ("SOFR").
Under the provisions of this guidance, entities can elect not to apply certain modification accounting requirements to contracts affected by reference rate reform, if certain criteria are met. An entity that makes this election would not have to remeasure the contracts at the modification date or reassess a previous accounting determination. Entities can also elect various optional expedients for hedging relationships affected by reference rate reform, if certain criteria are met. In addition, entities can make a one-time election to sell, transfer or both sell and transfer debt securities classified as held-to-maturity (“HTM”) that refer to a rate affected by reference rate reform, to AFS or to trading. However, such debt securities must have been classified as HTM before January 1, 2020. Once elected, the amendments in this guidance must be applied prospectively for all eligible contract modifications.
The ASU was effective upon issuance and can be applied through to December 31, 2022. We adopted the ASU upon its issuance and as we transition from LIBOR to alternative reference rates, we will elect the temporary optional expedients and exceptions to the existing US GAAP guidance on contract modifications and hedge accounting permitted by the ASU, as appropriate. The adoption of this standard did not have any impact on our consolidated financial statements and disclosures.
ASU 2020-03 – Codification Improvements to Financial Instruments
In March 2020, the FASB issued ASU 2020-03, which makes narrow-scope improvements to various topics within the codification relating to financial instruments, including the new credit losses standard. The amendments related to certain specific issues covered by the ASU were effective immediately upon the issuance of the ASU, while certain specific issues covered by the ASU and affecting the credit losses standard in ASU 2016-13 are effective in 2020 for those entities that have already adopted ASU 2016-13. We adopted the amendments in this ASU upon its issuance and that adoption did not have a material impact on our consolidated financial statements and the related disclosures.
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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
ASUs 2016-13, 2018-19, 2019-04, 2019-05, 2019-10 and 2019-11, Financial Instruments – Credit Losses – Measurement of Credit Losses on Financial Instruments
In June 2016, the FASB issued ASU 2016-13, which is codified in ASC 326 - Financial Instruments - Credit Losses, amending the guidance on the impairment of financial instruments and significantly changing how entities measure credit losses for most financial assets and certain other financial instruments, including reinsurance balances recoverable on paid and unpaid losses that are not measured at fair value through net earnings. The ASU replaced the “incurred loss” approach that was previously applied to determine credit losses with an “expected loss” model for financial instruments measured at amortized cost. Under the "expected loss" model, the estimate of expected credit losses should consider historical information, current information, as well as reasonable and supportable forecasts, including estimates of prepayments. The expected credit losses and subsequent adjustments to such losses are recorded through an allowance account that is deducted from the amortized cost basis of the financial asset, with the net carrying value of the financial asset presented on the consolidated balance sheet at the amount expected to be collected.
ASU 2016-13 also amends the other-than-temporary impairment ("OTTI") model that was previously applicable to AFS debt securities, with the new approach now requiring the recognition of impairments relating to credit losses through an allowance account and limiting the amount of credit loss to the difference between a security’s amortized cost basis and its fair value. This revised approach records the full effect of reversals of any credit losses in current period earnings, compared to previous guidance where this reversal was amortized over the lifetime of the security. Under this revised approach, the length of time a security has been in an unrealized loss position will no longer be considered in determining whether to record a credit loss. In addition, the historical and implied volatility of the fair value of a security and recoveries or declines in fair value after the balance sheet date will no longer be considered when making a determination of whether a credit loss exists.
We adopted ASU 2016-13 and all the related amendments on January 1, 2020 using the modified retrospective approach for our financial instruments carried at amortized cost, and prospectively for our AFS debt securities as required by the standard, resulting in an overall reduction in retained earnings of $6.1 million as summarized below:
A cumulative effect adjustment of $3.0 million relating to our financial instruments carried at amortized cost, which primarily relates to our insurance balances recoverable on paid and unpaid losses. We already carried significant specific allowances for credit losses of $147.6 million on our reinsurance balances recoverable on paid and unpaid losses, relating primarily to our Non-life Run-off segment and therefore the adoption of this standard did not have a material impact on our balance sheet; and
$3.1 million related to our AFS debt securities whose fair values were less than their amortized cost basis.

Recently Issued Accounting Pronouncements Not Yet Adopted
Note 2 - "Significant Accounting Policies" to the consolidated financial statements contained in our Annual Report on Form 10-K for the year ended December 31, 2019 describes accounting pronouncements that were not adopted as of December 31, 2019. Those pronouncements have not yet been adopted unless discussed above in "New Accounting Standards Adopted in 2020."

2. ACQUISITIONS
On October 30, 2019, we completed the acquisition of Morse TEC LLC ("Morse TEC"). For further details, refer to Note 3 - "Acquisitions" to the consolidated financial statements contained in our Annual Report on Form 10-K for the year ended December 31, 2019.

3. SIGNIFICANT NEW BUSINESS

Hannover Re
On August 6, 2020, we completed a novation agreement with Hannover Reück SE and an affiliate (“Hannover Re”), pursuant to which we assumed certain legacy asbestos, environmental and workers' compensation exposures. In the transaction, we assumed gross loss reserves of approximately $200.0 million, which was equal to the net reinsurance premium consideration received in the transaction.

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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
Munich Re
On July 1, 2020, we completed a business transfer transaction with Great Lakes Insurance SE and HSB Engineering Insurance Limited, both subsidiaries of Munich Reinsurance Company ("Munich Re"), pursuant to which we acquired certain portfolios from their Australian branches. In the transaction, we received total assets of approximately AUD$144.8 million (approximately $99.8 million) for assuming the associated net insurance reserves, which primarily relate to long tail insurance business.

AXA Group
On June 1, 2020, we completed a loss portfolio transfer reinsurance agreement with AXA XL, a division of AXA SA, to reinsure specified legacy construction general liability multi-year policies. We assumed gross loss reserves of $179.7 million, which was equal to the net reinsurance premium consideration received in the transaction. In addition, we provided additional collateral of $24.5 million to support our obligations to AXA XL per the terms of the reinsurance agreement.

Aspen
On June 1, 2020, we completed an adverse development cover reinsurance agreement with Aspen Insurance Holdings Limited. In the transaction, we assumed $781.6 million of gross reserves for losses incurred on or prior to December 31, 2019 on a diversified mix of property, liability and specialty lines of business across the U.S., U.K. and Europe, in exchange for reinsurance premium consideration of $770.0 million and recorded a deferred charge asset of $11.7 million. Pursuant to the agreement, we provide $770.0 million of cover in excess of a $3.8 billion retention, and an additional $250.0 million of cover in excess of a $4.8 billion retention.

Lyft
On March 31, 2020, we entered into a novation agreement with affiliates of Lyft, Inc. (“Lyft”) and certain underwriting companies of Zurich North America (“Zurich”). In the transaction, in exchange for premium consideration of $465.0 million, we reinsured legacy automobile business underwritten by Zurich between October 1, 2015 and September 30, 2018 and which previously had been reinsured by Lyft’s wholly owned subsidiary, Pacific Valley Insurance Company ("PVIC"). Under a separate but related agreement, PVIC provides retrocession reinsurance coverage to us in excess of an $816.0 million limit. The transaction was effective on March 31, 2020.

4. DIVESTITURES, HELD-FOR-SALE BUSINESSES AND DISCONTINUED OPERATIONS

Recapitalization of StarStone U.S.
On June 10, 2020, we announced an agreement to recapitalize StarStone US Holdings, Inc. and its subsidiaries ("StarStone U.S.") and appoint a new management team and Board. As part of the recapitalization, we entered into a definitive agreement to sell StarStone U.S. to Core Specialty Insurance Holdings, Inc. ("Core Specialty"), a newly formed entity with equity backing from funds managed by SkyKnight Capital, L.P., Dragoneer Investment Group and Aquiline Capital Partners LLC. We currently have a 59.0% interest in StarStone U.S. The purchase price will be based on a $30.0 million premium to the GAAP tangible book value of StarStone U.S. to be determined on the month end prior to the closing date and will consist of $235.0 million of common shares of Core Specialty and cash. The $235.0 million of common shares of Core Specialty is expected to represent an estimated 26.1% interest in Core Specialty after certain co-investments and management equity awards. Our investment in Core Specialty will be accounted for as an equity method investment. Given the proposed transaction, we have classified the StarStone U.S. results as discontinued operations for the periods presented.
In connection with the sale, one of our Non-life Run-off subsidiaries will enter into a loss portfolio transfer reinsurance agreement with StarStone U.S. pursuant to which we will reinsure all of the net loss reserves of StarStone U.S. in respect of premium earned prior to the calendar month end prior to the closing date. We will receive a reinsurance premium equal to the assumed reserves, plus approximately $16.0 million. The reinsurance agreement will contain an aggregate limit on our liability equal to $130.0 million in excess of the assumed reserves, and our subsidiary's obligations under the reinsurance agreement will be guaranteed by Enstar.
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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
The closing of the transaction is subject to regulatory approvals and other closing conditions and is expected to occur in the second half of 2020.
StarStone U.S. comprises a substantial portion of the StarStone segment. We have classified the assets and liabilities of StarStone U.S. as held-for-sale at June 30, 2020. The following table summarizes the components of assets and liabilities held-for-sale on our consolidated balance sheets as at June 30, 2020 and December 31, 2019:
June 30, 2020December 31, 2019
ASSETS
Fixed maturities, trading, at fair value$156,366  $202,994  
Fixed maturities, available-for-sale, at fair value 482,758  375,337  
Equities, at fair value4,500  3,000  
Other investments, at fair value7,097  6,389  
Total investments650,721  587,720  
Cash and cash equivalents75,900  78,613  
Restricted cash and cash equivalents9,683  5,815  
Premiums receivable110,034  99,367  
Deferred tax assets14,890  15,191  
Reinsurance balances recoverable on paid and unpaid losses484,583  530,604  
Funds held by reinsured companies30,818  35,861  
Deferred acquisition costs33,615  36,992  
Goodwill and intangible assets24,900  24,900  
Other assets79,758  59,707  
TOTAL ASSETS HELD FOR SALE$1,514,902  $1,474,770  
LIABILITIES
Losses and loss adjustment expenses$838,682  $836,761  
Unearned premiums221,243  218,166  
Insurance and reinsurance balances payable60,155  22,453  
Other liabilities117,515  131,151  
TOTAL LIABILITIES HELD FOR SALE$1,237,595  $1,208,531  
NET ASSETS HELD FOR SALE$277,307  $266,239  

As of June 30, 2020 and December 31, 2019, included in the table above were restricted investments of $137.4 million and $131.0 million, respectively.
The unrealized gains (losses) on AFS investments balance in accumulated other comprehensive income (loss) ("AOCI"), a component of shareholders' equity, included $14.2 million and $(1.0) million as at June 30, 2020 and December 31, 2019, respectively, related to StarStone U.S. Upon completion of the sale, this balance will be included in earnings as a component of the gain on sale.
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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
The StarStone U.S. business qualifies as a discontinued operation. The following table summarizes the components of net earnings (loss) from discontinued operations, net of income taxes on the consolidated statements of earnings for the three and six months ended June 30, 2020 and 2019:
Three Months Ended June 30,Six Months Ended June 30,
2020201920202019
INCOME
Net premiums earned$65,403  $85,601  $165,949  $168,941  
Fees and commission income  161    365  
Net investment income3,699  4,106  7,414  7,861  
Net realized and unrealized gains6,262  9,042  847  17,073  
Other income24  5  25  6  
75,388  98,915  174,235  194,246  
EXPENSES
Net incurred losses and loss adjustment expenses48,115  69,784  112,709  125,889  
Acquisition costs12,251  15,774  32,794  31,761  
General and administrative expenses15,645  16,845  30,729  30,655  
Interest expense591  645  1,180  1,355  
Net foreign exchange (gains) losses(11) (9) (2) (5) 
76,591  103,039  177,410  189,655  
EARNINGS (LOSS) BEFORE INCOME TAXES(1,203) (4,124) (3,175) 4,591  
Income tax benefit (expense)51  181  (46) (466) 
NET EARNINGS (LOSS) FROM DISCONTINUED OPERATIONS, NET OF INCOME TAXES$(1,152) $(3,943) $(3,221) $4,125  
Net loss (earnings) from discontinued operations attributable to noncontrolling interest473  1,617  1,321  (1,692) 
NET EARNINGS (LOSS) FROM DISCONTINUED OPERATIONS ATTRIBUTABLE TO ENSTAR ORDINARY SHAREHOLDERS$(679) $(2,326) $(1,900) $2,433  

The following table presents the cash flows of StarStone U.S. for the six months ended June 30, 2020 and 2019:
Six Months Ended June 30,
20202019
Operating activities$95,096  $(26,171) 
Investing activities(93,940) (4,972) 
Change in cash and restricted cash of business held for sale$1,156  $(31,143) 

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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
Intercompany transactions between StarStone U.S. (Discontinued Operations) and Continuing Operations
The table below presents a summary of the total income and expenses recognized in continuing operations for the three and six months ended June 30, 2020 and 2019, relating to intercompany transactions, primarily intragroup reinsurances, between StarStone U.S. and our other subsidiaries:
Three Months Ended June 30,Six Months Ended June 30,
2020201920202019
Total Income$3,650  $1,915  $7,363  $4,709  
Total Expenses(7,239) 30,235  (14,899) 46,466  
Net Earnings (Loss)10,889  (28,320) 22,262  (41,757) 

Run-off of StarStone International (non-U.S.)
On June 10, 2020, we also announced that we are placing the StarStone non-U.S. international operations ("StarStone International") into an orderly run-off (the "StarStone International Run-Off"). The liabilities associated with the StarStone International Run-Off vary in duration, and the run-off is expected to occur over a number of years. Steps to reduce the size of StarStone International's operations have begun and will involve several phases to occur over time. As a result, we cannot anticipate with certainty the expected completion date of the StarStone International Run-Off.
We continue to evaluate additional strategic options for StarStone International's operations and business. Consequently, such options could have the effect of mitigating costs associated with placing the business into run-off. The remaining StarStone International operations will continue to serve the needs of policyholders and ensure that the companies continue to meet all regulatory requirements. The results of StarStone International are included within continuing operations in the StarStone segment.

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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
5. INVESTMENTS
We hold: (i) trading portfolios of short-term and fixed maturity investments and equities, carried at fair value; (ii) AFS portfolios of short-term and fixed maturity investments, carried at fair value; (iii) other investments, carried at fair value; (iv) equity method investments; and (v) funds held - directly managed.

Short-Term and Fixed Maturity Investments

Asset Types
The fair values of the underlying asset categories comprising our short-term and fixed maturity investments classified as trading and AFS and the fixed maturity investments included within our funds held - directly managed balance were as follows:
June 30, 2020
Short-term investments, tradingShort-term investments, AFSFixed maturities, tradingFixed maturities, AFSFixed maturities, funds held - directly managedTotal
U.S. government and agency$5,924  $60,225  $166,673  $203,972  $109,677  $546,471  
U.K. government186  155  64,549  42,790    107,680  
Other government3,338  331  376,956  98,852  23,835  503,312  
Corporate768  27,059  3,684,722  1,251,847  600,704  5,565,100  
Municipal    86,301  28,606  50,813  165,720  
Residential mortgage-backed    176,347  180,138  80,347  436,832  
Commercial mortgage-backed    431,610  179,932  228,825  840,367  
Asset-backed    377,999  229,074  59,279  666,352  
Total fixed maturity and short-term investments$10,216  $87,770  $5,365,157  $2,215,211  $1,153,480  $8,831,834  
December 31, 2019
Short-term investments, tradingShort-term investments, AFSFixed maturities, tradingFixed maturities, AFSFixed maturities, funds held - directly managedTotal
U.S. government and agency$  $111,583  $208,296  $269,661  $106,537  $696,077  
U.K. government24,411  1,069  122,012  14,280    161,772  
Other government21,958  387  575,017  84,760  20,734  702,856  
Corporate5,121  13,915  3,959,288  866,557  603,389  5,448,270  
Municipal  1,381  87,451  2,399  49,456  140,687  
Residential mortgage-backed    215,521  99,188  86,205  400,914  
Commercial mortgage-backed    534,357  49,046  230,343  813,746  
Asset-backed    441,393  152,161  76,681  670,235  
Total fixed maturity and short-term investments$51,490  $128,335  $6,143,335  $1,538,052  $1,173,345  $9,034,557  

Included within residential and commercial mortgage-backed securities as of June 30, 2020 were securities issued by U.S. governmental agencies with a fair value of $371.1 million (December 31, 2019: $333.3 million). Included within corporate securities as of June 30, 2020 were senior secured loans of $nil (December 31, 2019: $31.4 million).
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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
Contractual Maturities
The contractual maturities of our short-term and fixed maturity investments, classified as trading and AFS and the fixed maturity investments included within our funds held - directly managed balance are shown below. Actual maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations with or without call or prepayment penalties.
As of June 30, 2020Amortized
Cost
Fair Value% of Total
Fair
Value
One year or less$411,022  $411,903  4.7 %
More than one year through two years642,622  650,200  7.4 %
More than two years through five years2,084,605  2,146,660  24.3 %
More than five years through ten years1,931,647  2,048,533  23.2 %
More than ten years1,466,809  1,630,987  18.5 %
Residential mortgage-backed430,201  436,832  4.9 %
Commercial mortgage-backed825,225  840,367  9.5 %
Asset-backed695,528  666,352  7.5 %
$8,487,659  $8,831,834  100.0 %

Credit Ratings
The following table sets forth the credit ratings of our short-term and fixed maturity investments classified as trading and AFS and the fixed maturity investments included within our funds held - directly managed balance as of June 30, 2020:
Amortized
Cost
Fair Value% of TotalAAA
Rated
AA RatedA RatedBBB
Rated
Non-
Investment
Grade
Not Rated
U.S. government and agency$522,106  $546,471  6.2 %$546,471  $  $  $  $  $  
U.K. government107,185  107,680  1.2 %2,271  94,987  10,422        
Other government488,650  503,312  5.7 %250,552  144,733  53,101  45,147  9,779    
Corporate5,268,218  5,565,100  63.0 %194,895  593,964  2,840,810  1,663,136  262,385  9,910  
Municipal150,546  165,720  1.9 %10,078  82,087  53,458  20,097      
Residential mortgage-backed430,201  436,832  5.0 %430,300  31  1,807  1,881  450  2,363  
Commercial mortgage-backed825,225  840,367  9.5 %575,005  103,238  89,254  60,203  5,625  7,042  
Asset-backed695,528  666,352  7.5 %291,013  97,699  149,673  117,217  9,045  1,705  
Total$8,487,659  $8,831,834  100.0 %$2,300,585  $1,116,739  $3,198,525  $1,907,681  $287,284  $21,020  
% of total fair value26.0 %12.6 %36.2 %21.6 %3.3 %0.3 %
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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
Unrealized Gains and Losses on AFS Short-term and Fixed Maturity Investments
The amortized cost, unrealized gains and losses, allowance for credit losses and fair values of our short-term and fixed maturity investments classified as AFS as of June 30, 2020 were as follows:
Gross Unrealized Losses
As of June 30, 2020Amortized CostGross Unrealized GainsNon-Credit Related Losses
Allowance for Credit Losses(1)
Fair Value
U.S. government and agency$258,996  $5,505  $(304) $  $264,197  
U.K. government43,654  38  (747)   42,945  
Other government96,774  2,645  (236)   99,183  
Corporate1,248,862  37,470  (4,336) (3,090) 1,278,906  
Municipal27,766  840      28,606  
Residential mortgage-backed178,981  2,085  (928)   180,138  
Commercial mortgage-backed179,412  3,631  (2,617) (494) 179,932  
Asset-backed234,216  592  (5,645) (89) 229,074  
$2,268,661  $52,806  $(14,813) $(3,673) $2,302,981  
(1) The Company adopted ASU 2016-13 and the related amendments on January 1, 2020. Refer to Note 1 - "Significant Accounting Policies" for further details.
The amortized cost, unrealized gains and losses and fair values of our short-term and fixed maturity investments classified as AFS as of December 31, 2019 were as follows:
As of December 31, 2019Amortized CostGross Unrealized GainsGross Unrealized Losses
(Non-OTTI)
Fair Value
U.S. government and agency$381,488  $78  $(322) $381,244  
U.K. government15,067  282    15,349  
Other government84,116  1,119  (88) 85,147  
Corporate880,667  3,739  (3,934) 880,472  
Municipal3,770  12  (2) 3,780  
Residential mortgage-backed99,646  221  (679) 99,188  
Commercial mortgage-backed49,219  30  (203) 49,046  
Asset-backed152,153  127  (119) 152,161  
$1,666,126  $5,608  $(5,347) $1,666,387  

Gross Unrealized Losses on AFS Short-term and Fixed Maturity Investments
The following table summarizes our short-term and fixed maturity investments classified as AFS that were in a gross unrealized loss position, for which an allowance for credit losses has not been recorded, as of June 30, 2020, aggregated by major security type and length of time in continuous unrealized loss position:
 12 Months or GreaterLess Than 12 MonthsTotal
As of June 30, 2020Fair
Value
Gross Unrealized
Losses
Fair
Value
Gross Unrealized
Losses
Fair
Value
Gross Unrealized
Losses
U.S. government and agency$  $  $264,197  $(304) $264,197  $(304) 
U.K. government    42,945  (747) 42,945  (747) 
Other government169  (11) 99,014  (225) 99,183  (236) 
Corporate1,798  (267) 1,175,077  (2,283) 1,176,875  (2,550) 
Residential mortgage-backed    180,138  (928) 180,138  (928) 
Commercial mortgage-backed    164,704  (1,345) 164,704  (1,345) 
Asset-backed    218,538  (5,171) 218,538  (5,171) 
Total fixed maturity and short-term investments$1,967  $(278) $2,144,613  $(11,003) $2,146,580  $(11,281) 
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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
  
The following table summarizes our short-term and fixed maturity investments classified as AFS that are in a gross unrealized loss position as of December 31, 2019, aggregated by major security type and length of time in continuous unrealized loss position:
 12 Months or GreaterLess Than 12 MonthsTotal
As of December 31, 2019Fair
Value
Gross Unrealized
Losses
Fair
Value
Gross Unrealized
Losses
Fair
Value
Gross Unrealized
Losses
U.S. government and agency$  $  $193,574  $(322) $193,574  $(322) 
Other government1,080  (23) 37,796  (65) 38,876  (88) 
Corporate2,754  (306) 338,965  (3,628) 341,719  (3,934) 
Municipal128    761  (2) 889  (2) 
Residential mortgage-backed    52,005  (679) 52,005  (679) 
Commercial mortgage-backed    35,777  (203) 35,777  (203) 
Asset-backed    101,591  (119) 101,591  (119) 
Total fixed maturity and short-term investments$3,962  $(329) $760,469  $(5,018) $764,431  $(5,347) 
As of June 30, 2020 and December 31, 2019, the number of securities classified as AFS in an unrealized loss position for which an allowance for credit loss is not recorded was 474 and 479, respectively. Of these securities, the number of securities that had been in an unrealized loss position for twelve months or longer was 7 and 12, respectively.
The contractual terms of a majority of these investments do not permit the issuers to settle the securities at a price less than the amortized cost basis of the security. While credit spreads have increased, and in certain cases credit ratings were downgraded, we currently do not expect the issuers of these fixed income securities to settle them at a price less than their amortized cost basis and therefore it is expected that we will recover the entire amortized cost basis of each security. Furthermore, we do not intend to sell the securities that are currently in an unrealized loss position, and it is also not more likely than not that we will be required to sell the securities before the recovery of their amortized cost bases.

Allowance for Credit Losses on AFS Fixed Maturity Investments
We adopted ASU 2016-13 and the related amendments on January 1, 2020 prospectively, and recognized an allowance for credit losses of $3.1 million on initial adoption of the guidance. Our allowance for credit losses is derived based on various data sources, multiple key inputs and forecast scenarios. These include default rates specific to the individual security, vintage of the security, geography of the issuer of the security, industry analyst reports, credit ratings and consensus economic forecasts.
To determine the credit losses on our AFS securities, we use the probability of default ("PD") and loss given default ("LGD") methodology through a third-party proprietary tool which calculates the expected credit losses based on a discounted cash flow method. The tool uses effective interest rates to discount the expected cash flows associated with each AFS security to determine its fair value, which is then compared with its amortized cost basis to derive the credit loss on the security.
The methodology and inputs used to determine the credit loss by security type are as follows:
Corporate and Government: Expected cashflows are derived that are specific to each security. The PD is based on a quantitative model that converts agency ratings to term structures that vary by country, industry and the state of the credit cycle. This is used along with macroeconomic forecasts to produce scenario conditioned PDs. The LGD is based on default studies provided by a third party which we use along with macroeconomic forecasts to produce scenario conditioned LGDs.
Municipals: Expected cash flows are derived that are specific to each security. The PD model produces scenario conditioned PD output over the lifetime of the municipal security. These PDs are based on key macroeconomic and instrument specific risk factors. The LGD is derived based on a model which uses assumptions specific to the municipal securities.
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For corporates, government and municipal securities, we use an explicit reversion and a three year forecast period, which we consider to be a reasonable duration during which an economic forecast could continue to be reliable.
Asset backed, Commercial and Residential mortgaged-backed: Expected cash flows are derived that are specific to each security. The PD and LGD for each security is based on a quantitative model that generates scenario conditioned PD and LGD term structures based on the underlying collateral type, waterfall and other trustee information. This model also considers prepayments. For these security types, there is no explicit reversion and the forecasts are deemed reasonable and supportable over the life of the portfolio.
Due to the short-term period during which accrued investment income remains unpaid, which is typically six months since the coupon on our debt securities is paid semi-annually, we elected not to establish an allowance for credit losses on our accrued investment income balances. Accrued investment income is written off through net realized investment gains (losses) at the time the issuer of the debt security defaults or is expected to default on payments.
The following tables provide a reconciliation of the beginning and ending allowance for credit losses on our AFS debt securities:
Three Months Ended June 30, 2020
Other
government
CorporateCommercial
mortgage
backed
Asset-backedTotal
Allowance for credit losses, beginning of period$  $(14,323) $(1) $  $(14,324) 
Allowances for credit losses on securities for which credit losses were not previously recorded  (149) (493) (89) (731) 
Reductions for securities sold during the period  1,388      1,388  
Reductions in the allowance for credit losses on securities we either intend to sell or more likely than not, we will be required to sell before the recovery of their amortized cost basis          
(Increase) decrease to the allowance for credit losses on securities that had an allowance recorded in the previous period  9,994      9,994  
Allowance for credit losses, end of period$  $(3,090) $(494) $(89) $(3,673) 
Six Months Ended June 30, 2020
Other
government
CorporateCommercial
mortgage
backed
Asset-backedTotal
Allowance for credit losses, beginning of period$  $  $  $  $  
Cumulative effect of change in accounting principle(22) (2,987) (50)   (3,059) 
Allowances for credit losses on securities for which credit losses were not previously recorded  (1,876) (444) (89) (2,409) 
Reductions for securities sold during the period  1,773      1,773  
Reductions in the allowance for credit losses on securities we either intend to sell or more likely than not, we will be required to sell before the recovery of their amortized cost basis22        22  
Allowance for credit losses, end of period$  $(3,090) $(494) $(89) $(3,673) 
During the three and six months ended June 30, 2020 we did not have any write-offs charged against the allowance for credit losses or any recoveries of amounts previously written-off.
Our allowance for credit losses decreased during the three months ended June 30, 2020 primarily due to low interest rates and tightening credit spreads as the markets rebounded from the recent disruption in global financial markets associated with the COVID-19 pandemic. Our modeling process for determining credit losses remained the same as the prior quarter and took into account the adverse impact that the COVID-19 pandemic still has on capital markets and the global economy in general.

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Other-Than-Temporary Impairment on AFS Fixed Maturity Investments
For the three and six months ended June 30, 2019, we did not recognize any other-than-temporary impairment losses on our AFS securities. We determined that no other-than-temporary credit losses existed as of December 31, 2019. A description of our other-than-temporary impairment process is included in Note 2 - "Significant Accounting Policies" to the consolidated financial statements contained in our Annual Report on Form 10-K for the year ended December 31, 2019.
As discussed in detail in Note 1 - "Significant Accounting Policies" above, we adopted ASU 2016-13 and the related amendments on January 1, 2020 with this new guidance replacing the OTTI model that was previously applicable to our AFS debt securities. The new approach now requires the recognition of impairments relating to credit losses through an allowance account and limits the amount of credit loss to the difference between a security’s amortized cost basis and its fair value.

Equity Investments
The following table summarizes our equity investments classified as trading:
June 30, 2020December 31, 2019
Publicly traded equity investments in common and preferred stocks$274,382  $327,875  
Exchange-traded funds95,389  133,047  
Privately held equity investments in common and preferred stocks271,000  265,799  
$640,771  $726,721  
Equity investments include publicly traded common and preferred stocks, exchange-traded funds and privately held common and preferred stocks. Our publicly traded equity investments in common and preferred stocks predominantly trade on major exchanges and are managed by our external advisors. Our investments in exchange-traded funds also trade on major exchanges.
Our privately held equity investments in common and preferred stocks are direct investments in companies that we believe offer attractive risk adjusted returns and/or offer other strategic advantages. Each investment may have its own unique terms and conditions and there may be restrictions on disposals. There is no active market for these investments. Included within the above balance as of June 30, 2020 and December 31, 2019 is an investment in the parent company of AmTrust Financial Services, Inc. ("AmTrust"), with a fair value of $245.3 million and $240.1 million, respectively. Refer to Note 20 - "Related Party Transactions" for further information.

Other Investments, at fair value
The following table summarizes our other investments carried at fair value:
June 30, 2020December 31, 2019
Hedge funds$1,757,982  $1,121,904  
Fixed income funds584,607  481,039  
Equity funds368,314  410,149  
Private equity funds315,070  323,496  
CLO equities84,188  87,555  
CLO equity funds123,299  87,509  
Private credit funds38,094    
Other7,231  6,379  
$3,278,785  $2,518,031  

The valuation of our other investments is described in Note 11 - "Fair Value Measurements." Due to a lag in the valuations of certain funds reported by the managers, we may record changes in valuation with up to a three-month lag. We regularly review and discuss fund performance with the fund managers to corroborate the reasonableness of the reported net asset values and to assess whether any events have occurred within the lag
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period that would affect the valuation of the investments. The following is a description of the nature of each of these investment categories:
Hedge funds may invest in a wide range of instruments, including debt and equity securities, and utilize various sophisticated strategies, including derivatives, to achieve their objectives. We invest in a mixture of fixed income, equity and multi-strategy hedge funds.
Fixed income funds comprise a number of positions in diversified fixed income funds that are managed by third-party managers. Underlying investments vary from high-grade corporate bonds to non-investment grade senior secured loans and bonds, in both liquid and illiquid markets. The liquid fixed income funds have regularly published prices.
Equity funds invest in a diversified portfolio of U.S. and international publicly-traded equity securities.
Private equity funds invest primarily in the financial services industry.
CLO equities comprise investments in the equity tranches of term-financed securitizations of diversified pools of corporate bank loans.
CLO equity funds invest primarily in the equity tranches of term-financed securitizations of diversified pools of corporate bank loans.
Private credit funds invest in direct senior or collateralized loans.
Others comprise various investments including real estate debt funds that invest primarily in European commercial real estate equity and a fund that provides loans to educational institutions throughout the U.S. and its territories.
The increase in our other investments carried at fair value between June 30, 2020 and December 31, 2019 was primarily attributable to unrealized gains of $250.5 million and net additional subscriptions of $520.2 million to hedge funds, fixed income funds, private credit funds, CLO equities, CLO equity funds and equity funds.
As of June 30, 2020, we had unfunded commitments of $544.7 million to private credit and private equity funds.
Certain of our other investments are subject to restrictions on redemptions and sales that are determined by the governing documents, which limits our ability to liquidate those investments. These restrictions may include lock-ups, redemption gates, restricted share classes or side pockets, restrictions on the frequency of redemption and notice periods. A gate is the ability to deny or delay a redemption request, whereas a side-pocket is a designated account for which the investor loses its redemption rights. Certain other investments may not have any restrictions governing their sale, but there is no active market and no guarantee that we will be able to execute a sale in a timely manner. In addition, even if certain other investments are not eligible for redemption or sales are restricted, we may still receive income distributions from those other investments. The table below details the estimated date by which proceeds would be received if we had provided notice of our intent to redeem or initiated a sales process as of June 30, 2020:
Less than 1 Year1-2 years2-3 yearsMore than 3 yearsNot Eligible/ RestrictedTotalRedemption Frequency
Hedge funds$700,346  $895,057  $  $102,600  $59,979  $1,757,982  Monthly to Bi-annually
Fixed income funds574,617        9,990  584,607  Daily to Quarterly
Equity funds368,314          368,314  Daily to Quarterly
Private equity funds        315,070  315,070  N/A
CLO equities84,188          84,188  Daily
CLO equity funds92,180  23,549  7,570      123,299  Quarterly to Bi-annually
Private credit funds        38,094  38,094  N/A
Other        7,231  7,231  N/A
$1,819,645  $918,606  $7,570  $102,600  $430,364  $3,278,785  
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Refer to Note 20 - "Related Party Transactions" for further information regarding certain of our other investments.
Equity Method Investments
The following table summarizes our equity method investments:
June 30, 2020December 31, 2019
InvestmentOwnership %Carrying ValueInvestmentOwnership %Carrying Value
Enhanzed Re$154,050  47.4 %$188,868  $154,050  47.4 %$182,856  
Citco50,000  31.9 %51,815  50,000  31.9 %51,742  
Monument59,600  26.6 %92,117  26,600  26.6 %60,598  
Clear Spring11,210  20.0 %10,402  11,210  20.0 %10,645  
Other24,963  
~30%
19,196  24,963  
~30%
20,436  
$299,823  $362,398  $266,823  $326,277  
Refer to Note 20 - "Related Party Transactions" for further information regarding our investments in Enhanzed Re, Citco, Monument and Clear Spring.
As of June 30, 2020, we had unfunded commitments of $76.5 million related to equity method investments.

Funds Held
Under funds held arrangements, the reinsured company has retained funds that would otherwise have been remitted to our reinsurance subsidiaries. We either have (i) funds held by reinsured companies, which are carried at amortized cost and on which we receive a fixed crediting rate, or (ii) funds held - directly managed, which are carried at fair value and on which we receive the underlying return on the portfolio. The investment returns on both categories of funds held are recognized in net investment income and net realized and unrealized gains (losses). The funds held balance is credited with investment income and losses payable are deducted.
Funds Held - Directly Managed
Funds held - directly managed, where we receive the underlying return on the investment portfolio, are carried at fair value, either because we elected the fair value option at the inception of the reinsurance contract, or because it represents the aggregate of funds held at amortized cost and the fair value of an embedded derivative. The embedded derivative relates to our contractual right to receive the return on the underlying investment portfolio supporting the reinsurance contract. We include the estimated fair value of these embedded derivatives in the consolidated balance sheets with the host contract in order to reflect the expected settlement of these features with the host contract. The change in the fair value of the embedded derivative is included in net unrealized gains (losses). The following table summarizes the components of the funds held - directly managed:
June 30, 2020December 31, 2019
Fixed maturity investments, trading$1,153,480  $1,173,345  
Cash and cash equivalents8,648  10,296  
Other assets6,728  3,911  
$1,168,856  $1,187,552  
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The following table summarizes the fixed maturity investment components of funds held - directly managed:
June 30, 2020December 31, 2019
Funds held - Directly Managed - Fair Value OptionFunds held - Directly Managed - Variable ReturnTotalFunds held - Directly Managed - Fair Value OptionFunds held - Directly Managed - Variable ReturnTotal
Fixed maturity investments, at amortized cost$185,446  $885,997  $1,071,443  $185,859  $940,194  $1,126,053  
Net unrealized gains (losses):
Change in fair value - fair value option accounting11,624    11,624  5,438    5,438  
Change in fair value - embedded derivative accounting  70,413  70,413    41,854  41,854  
Fixed maturity investments within funds held - directly managed, at fair value$197,070  $956,410  $1,153,480  $191,297  $982,048  $1,173,345  
Refer to the sections above for details of the fixed maturity investments within our funds held - directly managed portfolios.
Funds Held by Reinsured Companies
Funds held by reinsured companies, where we received a fixed crediting rate, are carried at cost on our consolidated balance sheets. As of June 30, 2020 and December 31, 2019, we had funds held by reinsured companies of $1,466.6 million and $475.7 million, respectively. The increase related to $770.0 million and $204.2 million of additional funds held balances related to the Aspen and AXA Group transactions, respectively.

Net Investment Income
Major categories of net investment income are summarized as follows:
Three Months Ended June 30,Six Months Ended June 30,
2020201920202019
Fixed maturity investments$52,837  $54,835  $106,279  $109,161  
Short-term investments and cash and cash equivalents752  4,250  3,377  7,904  
Funds held 24,099  2,304  24,369  8,810  
Funds held - directly managed10,685  9,611  19,501  19,361  
Investment income from fixed maturities and cash and cash equivalents88,373  71,000  153,526  145,236  
Equity investments3,762  3,422  9,725  6,802  
Other investments5,291  2,503  13,384  4,617  
Investment income from equities and other investments9,053  5,925  23,109  11,419  
Gross investment income97,426  76,925  176,635  156,655  
Investment expenses(2,983) (2,654) (7,478) (6,733) 
Net investment income$94,443  $74,271  $169,157  $149,922  

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NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
Net Realized and Unrealized Gains
Components of net realized and unrealized gains were as follows:
Three Months EndedSix Months Ended
June 30,June 30,
2020201920202019
Net realized gains (losses) on sale:
Gross realized gains on fixed maturity securities, AFS$8,577  $4,445  $10,124  $4,449  
Gross realized losses on fixed maturity securities, AFS (4,567) (227) (6,593) (292) 
Credit recoveries (losses) on fixed maturity securities, AFS9,002    (2,637)   
Net realized gains (losses) on fixed maturity securities, trading41,556  21,113  57,380  20,391  
Net realized gains (losses) on funds held - directly managed1,741  244  2,253  (1,362) 
Net realized gains (losses) on equity investments1,886  120  879  2,668  
Total net realized gains on sale$58,195  $25,695  $61,406  $25,854  
Net unrealized gains (losses):
Fixed maturity securities, trading$300,948  $124,977  $44,471  $326,335  
Fixed maturity securities in funds held - directly managed portfolios60,107  35,267  34,805  74,229  
Equity investments37,334  13,826  (52,619) 21,209  
Other Investments511,024  60,904  250,484  265,802  
Total net unrealized gains909,413  234,974  277,141  687,575  
Net realized and unrealized gains$967,608  $260,669  $338,547  $713,429  

The gross realized gains and losses on AFS investments included in the table above resulted from sales of $678.5 million and $82.4 million for the three months ended June 30, 2020 and 2019, respectively, and $1,046.3 million and $83.6 million for the six months ended June 30, 2020 and 2019, respectively.

Reconciliation to Consolidated Statements of Comprehensive Income
The following table provides a reconciliation of the gross realized gains and losses and credit recoveries (losses) on our AFS fixed maturity debt securities that arose during the three and six months ended June 30, 2020 within our continuing and discontinued operations and the offsetting reclassification adjustments included within our consolidated statements of comprehensive income:
Three Months Ended
June 30,
Six Months Ended
June 30,
2020201920202019
Included within continuing operations:
Gross realized gains on fixed maturity securities, AFS$8,577  $4,445  $10,124  $4,449  
Gross realized losses on fixed maturity securities, AFS(4,567) (227) (6,593) (292) 
Included within discontinued operations:
Gross realized gains on fixed maturity securities, AFS269    536    
Gross realized losses on fixed maturity securities, AFS(57)   (57)   
Total reclassification adjustment$4,222  $4,218  $4,010  $4,157  
Included within continuing operations:
Credit recoveries (losses) on fixed maturity securities, AFS$9,002  $  $(2,637) $  
Included within discontinued operations:
Credit recoveries (losses) on fixed maturity securities, AFS1,760    187    
Total reclassification adjustment$10,762  $  $(2,450) $  

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NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
Restricted Assets
We utilize trust accounts to collateralize business with our insurance and reinsurance counterparties. We are also required to maintain investments and cash and cash equivalents on deposit with regulatory authorities and Lloyd's to support our insurance and reinsurance operations. The investments and cash and cash equivalents on deposit are available to settle insurance and reinsurance liabilities. Collateral generally takes the form of assets held in trust, letters of credit or funds held. The assets used as collateral are primarily highly rated fixed maturity securities. The carrying value of our restricted assets, including restricted cash of $336.7 million and $346.9 million, as of June 30, 2020 and December 31, 2019, respectively, was as follows: 
June 30, 2020December 31, 2019
Collateral in trust for third party agreements$4,245,007  $4,103,847  
Assets on deposit with regulatory authorities260,998  309,659  
Collateral for secured letter of credit facilities119,709  132,670  
Funds at Lloyd's (1)
574,093  639,316  
$5,199,807  $5,185,492  
(1) Our businesses include three Lloyd's syndicates. Lloyd's determines the required capital principally through the annual business plan of each syndicate. This capital is referred to as "Funds at Lloyd's" and will be drawn upon in the event that a syndicate has a loss that cannot be funded from other sources. We also utilize unsecured letters of credit for Funds at Lloyd's, as described in Note 14 - "Debt Obligations and Credit Facilities."

6. DERIVATIVES AND HEDGING INSTRUMENTS

Foreign Currency Hedging of Net Investments in Foreign Operations
We use foreign currency forward exchange rate contracts in qualifying hedging relationships to hedge the foreign currency exchange rate risk associated with certain of our net investments in foreign operations. As of June 30, 2020 and December 31, 2019, we had forward currency contracts in place which we had designated as hedges of our net investments in foreign operations.
The following table presents the gross notional amounts and estimated fair values recorded within other assets and other liabilities related to our qualifying foreign currency forward exchange rate contracts:
June 30, 2020December 31, 2019
Fair ValueFair Value
Gross Notional Amount AssetsLiabilities Gross Notional Amount AssetsLiabilities
Foreign currency forward - AUD $68,913  $  $2,299  $64,620  $52  $2,033  
Foreign currency forward - EUR130,425  84  2,890  112,284  246  1,635  
Foreign currency forward - GBP278,534  31  396  318,387  344  7,784  
Total qualifying hedges$477,872  $115  $5,585  $495,291  $642  $11,452  

The following table presents the amounts of the net gains and losses deferred in the cumulative translation adjustment ("CTA") account, which is a component of AOCI, in shareholders' equity, relating to our foreign currency forward exchange rate contracts:
Amount of Gains (Losses) Deferred in AOCI
Three Months Ended June 30,Six Months Ended June 30,
2020201920202019
Foreign currency forward - AUD $(7,435) $473  $1,036  $146  
Foreign currency forward - EUR(3,111) (1,559) (476) 296  
Foreign currency forward - GBP505  (1,591) 21,317  (1,591) 
Net gains (losses) on qualifying derivative hedges$(10,041) $(2,677) $21,877  $(1,149) 

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Derivatives Not Designated or Not Qualifying as Net Investments Hedging Instruments
From time to time, we may also utilize foreign currency forward contracts as part of our overall foreign currency risk management strategy or to obtain exposure to a particular financial market, as well as for yield enhancement in non-qualifying hedging relationships. We may also utilize equity call option instruments either to obtain exposure to a particular equity instrument or for yield enhancement in non-qualifying hedging relationships.

Foreign Currency Forward Contracts
The following table presents the gross notional amounts and estimated fair values recorded within other assets and other liabilities related to our non-qualifying foreign currency forward hedging relationships:
June 30, 2020December 31, 2019
Fair ValueFair Value
Gross Notional Amount AssetsLiabilities Gross Notional Amount AssetsLiabilities
Foreign currency forward - AUD$2,136  $849  $912  $913  $839  $892  
Foreign currency forward - CAD50,309    936  66,266  10  1,482  
Foreign currency forward - EUR14,617  9  324  74,444  507  1,440  
Foreign currency forward - GBP48,898  5  70  11,940  13  292  
Total non-qualifying hedges$115,960  $863  $2,242  $153,563  $1,369  $4,106  
The following table presents the amounts of the net gains (losses) included in earnings related to our non-qualifying foreign currency forward contracts:
 Gains (Losses) on non-qualifying-hedges included in net earnings
Three Months Ended June 30,Six Months Ended June 30,
2020201920202019
Foreign currency forward - AUD$(2,978) $1,327  $(445) $562  
Foreign currency forward - CAD(2,225) (2,493) 2,771  (2,492) 
Foreign currency forward - EUR(224) (334) 952  871  
Foreign currency forward - GBP924  6,370  1,500  $2,311  
Net gains (losses) on non-qualifying hedges$(4,503) $4,870  $4,778  $1,252  

Credit Default Swaps, Futures and Currency Forward Contracts
From time to time we may also utilize (i) credit default swaps to both hedge and replicate credit exposure, (ii) government bond futures contracts for interest rate management, and (iii) foreign currency forward contracts for currency hedging, to collectively manage credit and duration risk, as well as for yield enhancement on some of our fixed income portfolios.
The following table presents the gross notional amounts and estimated fair values recorded within other assets and other liabilities related to our credit default swaps, government bond futures contracts and currency forward contracts:
June 30, 2020
Fair Value
Gross Notional AmountAssetsLiabilities
Credit default swaps$11  $11  $(11) 
Futures contracts - long positions39,147  30  —  
Futures contracts - short positions(31,491) —  (197) 
Currency forward contracts - long positions3,377  8  (3) 
Currency forward contracts - short positions(4,854) 32  —  
Total$6,190  $81  $(211) 
We initially entered into these credit default swaps, government bond futures contracts and currency forward contracts during the three month period ended June 30, 2020 and therefore we did not have any of these contracts in place as of December 31, 2019.
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The following table presents the amounts of the net gains included in earnings related to our government bond futures contracts and currency forward contracts:
Three and Six Months Ended June 30, 2020
Futures contracts
$(37) 
Currency forward contracts
166  
Total net gains
$129  
There was no earnings impact arising from the credit default swap contracts during the three and six months ended June 30, 2020.
We initially entered into these credit default swaps, government bond futures contracts and currency forward contracts during the three months ended June 30, 2020 and therefore we did not have any of these contracts in place during the three and six months ended June 30, 2019.

Investments in Call Options on Equities
During the three and six months ended June 30, 2020, we recorded unrealized losses of $nil and less than $0.1 million, respectively, in net earnings on the call options on equities that we had purchased in 2018 at a cost of $10.0 million. During the three and six months ended June 30, 2019, we had recorded unrealized gains of $1.7 million and $1.3 million, respectively, in net earnings, on these call options on equities. These call options on equities had a fair value of less than $0.1 million as at December 31, 2019 and expired without being exercised during the six months ended June 30, 2020.

Other Derivatives
In October 2019, we entered into a forward interest rate swap, with a notional amount of AUD$120.0 million, to partially mitigate the risk associated with declining interest rates until the completion of the Munich Re transaction which closed on July 1, 2020, as described in Note 3 - "Significant New Business."
During the three and six months ended June 30, 2020, we recorded unrealized gains included within net earnings of less than $0.1 million and $0.8 million, respectively, on the forward interest rate swap. This forward interest rate swap was terminated on April 7, 2020, for an inception-to-date net realized gain of $0.5 million. The carrying value of the forward interest rate swap, recorded in other liabilities as of December 31, 2019, was $0.3 million.

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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
7. REINSURANCE BALANCES RECOVERABLE ON PAID AND UNPAID LOSSES

The following tables provide the total reinsurance balances recoverable on paid and unpaid losses:
 June 30, 2020
 Non-life
Run-off
AtriumStarStoneTotal
Recoverable from reinsurers on unpaid:
Outstanding losses$932,734  $9,497  $264,302  $1,206,533  
IBNR554,162  17,292  138,756  710,210  
Fair value adjustments - acquired companies(12,977) 461  (1,636) (14,152) 
Fair value adjustments - fair value option(52,186)     (52,186) 
ULAE7,756      7,756  
Total reinsurance reserves recoverable1,429,489  27,250  401,422  1,858,161  
Paid losses recoverable151,355  1,478  83,060  235,893  
Total$1,580,844  $28,728  $484,482  $2,094,054  
Reconciliation to Consolidated Balance Sheet:
Reinsurance balances recoverable on paid and unpaid losses$909,460  $28,728  $484,482  $1,422,670  
Reinsurance balances recoverable on paid and unpaid losses - fair value option671,384      671,384  
Total $1,580,844  $28,728  $484,482  $2,094,054  
 December 31, 2019
 Non-life
Run-off
AtriumStarStoneTotal
Recoverable from reinsurers on unpaid:
Outstanding losses$972,293  $9,011  $264,131  $1,245,435  
IBNR673,059  19,286  93,185  785,530  
Fair value adjustments - acquired companies(13,652) 519  (2,122) (15,255) 
Fair value adjustments - fair value option(88,086)     (88,086) 
Total reinsurance reserves recoverable1,543,614  28,816  355,194  1,927,624  
Paid losses recoverable181,375  1,541  70,594  253,510  
Total$1,724,989  $30,357  $425,788  $2,181,134  
Reconciliation to Consolidated Balance Sheet:
Reinsurance balances recoverable on paid and unpaid losses$1,029,471  $30,357  $425,788  $1,485,616  
Reinsurance balances recoverable on paid and unpaid losses - fair value option695,518      695,518  
Total $1,724,989  $30,357  $425,788  $2,181,134  

Our insurance and reinsurance run-off subsidiaries and assumed portfolios, prior to acquisition, used retrocessional agreements to reduce their exposure to the risk of insurance and reinsurance assumed. On an annual basis, both Atrium and StarStone purchase a tailored outwards reinsurance program designed to manage their risk profiles. The majority of Atrium’s and StarStone's third-party reinsurance cover is with highly rated reinsurers or is collateralized by pledged assets or letters of credit.
The fair value adjustments, determined on acquisition of insurance and reinsurance subsidiaries, are based on the estimated timing of loss and LAE recoveries and an assumed interest rate equivalent to a risk free rate for securities with similar duration to the acquired reinsurance balances recoverable on paid and unpaid losses plus a spread for credit risk, and are amortized over the estimated recovery period, as adjusted for accelerations in timing of payments as a result of commutation settlements. The determination of the fair value adjustments on the retroactive reinsurance contracts for which we have elected the fair value option is described in Note 11 - "Fair Value Measurements."
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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
As of June 30, 2020 and December 31, 2019, we had reinsurance balances recoverable on paid and unpaid losses of $2.1 billion and $2.2 billion, respectively. The decrease of $87.1 million in reinsurance balances recoverable on paid and unpaid losses was primarily due to cash collections in the first six months of 2020, offset by reserve increases on StarStone, which includes estimated recoverables on losses related to the COVID-19 pandemic.

Top Ten Reinsurers
 June 30, 2020
 Non-life
Run-off
AtriumStarStoneTotal % of
Total
Top 10 reinsurers$1,031,132  $21,180  $351,639  $1,403,951  67.0 %
Other reinsurers > $1 million530,527  7,257  131,601  669,385  32.0 %
Other reinsurers < $1 million19,185  291  1,242  20,718  1.0 %
Total$1,580,844  $28,728  $484,482  $2,094,054  100.0 %
December 31, 2019
Non-life
Run-off
AtriumStarStoneTotal % of
Total
Top 10 reinsurers$1,154,110  $22,051  $295,443  $1,471,604  67.4 %
Other reinsurers > $1 million551,636  7,761  129,335  688,732  31.6 %
Other reinsurers < $1 million19,243  545  1,010  20,798  1.0 %
Total$1,724,989  $30,357  $425,788  $2,181,134  100.0 %
June 30, 2020December 31, 2019
Information regarding top ten reinsurers:
Number of top 10 reinsurers rated A- or better8  8  
Number of top 10 non-rated reinsurers (1)
2  2  
Reinsurers rated A- or better in top 10$1,138,740  $1,292,207  
Collateralized non-rated reinsurers in top 10 (1)
265,211  179,397  
Total top 10 reinsurance recoverables$1,403,951  $1,471,604  
Single reinsurers that represent 10% or more of total reinsurance balance recoverables as of June 30, 2020:
Hannover Ruck SE (2)
$257,980  $259,077  
Lloyd's Syndicates (3)
$373,156  $396,246  
(1) For the two non-rated reinsurers as of June 30, 2020 and two non-rated reinsurers as of December 31, 2019, we hold security in the form of pledged assets in trust or letters of credit issued to us in the full amount of the recoverable.
(2) Hannover Ruck SE is rated AA- by Standard & Poor’s and A+ by A.M. Best.
(3) Lloyd's Syndicates are rated A+ by Standard & Poor's and A by A.M. Best.

 Allowance for Estimated Uncollectible Reinsurance Balances Recoverable on Paid and Unpaid Losses
We evaluate and monitor the credit risk related to our reinsurers, and an allowance for estimated uncollectible reinsurance balances recoverable on paid and unpaid losses ("allowance for estimated uncollectible reinsurance") is established for amounts considered potentially uncollectible.
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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
With respect to our process for determining the allowances for estimated uncollectible reinsurance, we adopted ASU 2016-13 and the related amendments on January 1, 2020 and recorded a cumulative effect adjustment of $0.2 million to increase the opening retained earnings on the initial adoption of the guidance. Our allowance for estimated uncollectible reinsurance is derived based on various data sources, multiple key inputs and forecast scenarios. These include the duration of the collection period, credit quality, changes in reinsurer credit standing, default rates specific to the individual reinsurer, the geographical location of the reinsurer, contractual disputes with reinsurers over individual contentious claims, contract language or coverage issues, industry analyst reports and consensus economic forecasts.
To determine the allowance for estimated uncollectible reinsurance, we use the PD and LGD methodology whereby each reinsurer is allocated an appropriate PD percentage based on the expected payout duration by portfolio. This PD percentage is then multiplied by an appropriate LGD percentage to arrive at an overall credit allowance percentage which is then applied to the reinsurance balance recoverable for each reinsurer, net of any specific bad debt provisions, collateral or other contract related offsets, to arrive at the overall allowance for estimated uncollectible reinsurance by reinsurer.
The following tables show our gross and net balances recoverable from our reinsurers as well as the related allowance for estimated uncollectible reinsurance broken down by the credit ratings of our reinsurers. The majority of the allowance for estimated uncollectible reinsurance relates to the Non-life Run-off segment.
June 30, 2020
GrossAllowance for estimated uncollectible reinsuranceNetProvisions as a
% of Gross
Reinsurers rated A- or above$1,621,395  $41,077  $1,580,318  2.5 %
Reinsurers rated below A-, secured 434,902    434,902   %
Reinsurers rated below A-, unsecured181,410  102,576  78,834  56.5 %
Total$2,237,707  $143,653  $2,094,054  6.4 %
December 31, 2019
GrossAllowance for estimated uncollectible reinsuranceNetProvisions as a
% of Gross
Reinsurers rated A- or above$1,731,270  $43,427  $1,687,843  2.5 %
Reinsurers rated below A-, secured 463,840    463,840   %
Reinsurers rated below A-, unsecured133,663  104,212  29,451  78.0 %
Total$2,328,773  $147,639  $2,181,134  6.3 %

The table below provides a reconciliation of the beginning and ending allowance for estimated uncollectible reinsurance balances for the three and six months ended June 30, 2020:
Three Months EndedSix Months Ended
June 30, 2020June 30, 2020
Allowance for estimated uncollectible reinsurance, beginning of period$143,327  $147,639  
Cumulative effect of change in accounting principle  (195) 
Effect of exchange rate movement(1,446) (1,446) 
Current period change in the allowance2,584  (1,533) 
Write-offs charged against the allowance(600) (600) 
Recoveries collected(212) (212) 
Allowance for estimated uncollectible reinsurance, end of period$143,653  $143,653  


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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
8. DEFERRED CHARGE ASSETS
Deferred charge assets relate to retroactive reinsurance policies providing indemnification of losses and LAE with respect to past loss events in the Non-life Run-off segment. For insurance and reinsurance contracts for which we do not elect the fair value option, a deferred charge asset is recorded for the excess, if any, of the estimated ultimate losses payable over the premiums received at the initial measurement. The premium consideration that we charge the ceding companies may be lower than the undiscounted estimated ultimate losses payable due to the time value of money. After receiving the premium consideration in full from our cedents at the inception of the contract, we invest the premium received over an extended period of time thereby generating investment income. We expect to generate profits from these retroactive reinsurance policies when taking into account the premium received and expected investment income, less contractual obligations and expenses.
Deferred charge assets are included in other assets on our consolidated balance sheets. The following table presents a reconciliation of the deferred charge assets:
Three Months Ended June 30,Six Months Ended June 30,
2020201920202019
Beginning carrying value$257,832  $100,154  $272,462  $86,585  
Recorded during the period11,746  2,874  11,746  23,506  
Amortization(11,062) (3,934) (25,692) (10,997) 
Ending carrying value$258,516  $99,094  $258,516  $99,094  

Deferred charge assets are amortized over the estimated claim payment period of the related contract with the periodic amortization reflected in earnings as a component of losses and LAE. Deferred charge assets amortization is adjusted at each reporting period to reflect new estimates of the amount and timing of remaining loss payments. Changes in the estimated amount and the timing of payments of unpaid losses may have an effect on the unamortized deferred charge assets and the amount of periodic amortization. Deferred charge assets are assessed at each reporting period for impairment. If the asset is determined to be impaired, it is written down in the period in which the determination is made. For the six months ended June 30, 2020, we completed our assessment for impairment of deferred charge assets and concluded that there had been no impairment of our carried deferred charge assets amount.
Further information on deferred charge assets recorded during the three and six months ended June 30, 2020 is included in Note 3 - "Significant New Business."

9. LOSSES AND LOSS ADJUSTMENT EXPENSES
The liability for losses and loss adjustment expenses ("LAE"), also referred to as loss reserves, represents our gross estimates before reinsurance for unpaid reported losses and includes losses that have been incurred but not reported ("IBNR") for our Non-life Run-off, Atrium and StarStone segments using a variety of actuarial methods. We recognize an asset for the portion of the liability that we expect to recover from reinsurers. LAE reserves include allocated loss adjustment expenses ("ALAE"), and unallocated loss adjustment expenses ("ULAE"). ALAE are linked to the settlement of an individual claim or loss, whereas ULAE are based on our estimates of future costs to administer the claims. IBNR represents reserves for loss and LAE that have been incurred but not yet reported to us. This includes amounts for unreported claims, development on known claims and reopened claims.
Our loss reserves cover multiple lines of business, which include asbestos, environmental, general casualty, workers' compensation/personal accident, marine, aviation and transit, construction defect, professional indemnity/directors and officers, motor, property and other non-life lines of business. Refer to Note 10 - "Losses and Loss Adjustment Expenses" to the consolidated financial statements contained in our Annual Report on Form 10-K for the year ended December 31, 2019 for more information on establishing the liability for losses and LAE.

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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
The following tables summarize the liability for losses and LAE by segment and for our other activities:
 June 30, 2020
 Non-life
Run-off
AtriumStarStoneOtherTotal
Outstanding losses$4,411,962  $89,321  $693,280  $10,375  $5,204,938  
IBNR4,500,500  144,404  610,632  14,333  5,269,869  
Fair value adjustments - acquired companies(153,658) 3,649  (403)   (150,412) 
Fair value adjustments - fair value option(99,020)       (99,020) 
ULAE319,450  2,357  46,254    368,061  
Total$8,979,234  $239,731  $1,349,763  $24,708  $10,593,436  
Reconciliation to Consolidated Balance Sheet:
Loss and loss adjustment expenses$6,524,695  $239,731  $1,349,763  $24,708  $8,138,897  
Loss and loss adjustment expenses, at fair value2,454,539        2,454,539  
Total$8,979,234  $239,731  $1,349,763  $24,708  $10,593,436  
 December 31, 2019
 Non-life
Run-off
AtriumStarStoneOtherTotal
Outstanding losses$4,407,082  $89,141  $743,829  $9,512  $5,249,564  
IBNR3,945,407  136,543  556,135  13,565  4,651,650  
Fair value adjustments - acquired companies(170,689) 3,700  (522)   (167,511) 
Fair value adjustments - fair value option(217,933)       (217,933) 
ULAE331,494  2,288  18,852    352,634  
Total$8,295,361  $231,672  $1,318,294  $23,077  $9,868,404  
Reconciliation to Consolidated Balance Sheet:
Loss and loss adjustment expenses$5,674,239  $231,672  $1,318,294  $23,077  $7,247,282  
Loss and loss adjustment expenses, at fair value2,621,122        2,621,122  
Total$8,295,361  $231,672  $1,318,294  $23,077  $9,868,404  

The overall increase in the liability for losses and LAE between December 31, 2019 and June 30, 2020 was primarily attributable to the AXA Group, Aspen and Lyft reinsurance transactions, as described in Note 3 - "Significant New Business" and net incurred losses and LAE in the period, partially offset by losses paid and foreign exchange gains in the period.
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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
The table below provides a consolidated reconciliation of the beginning and ending liability for losses and LAE:
Three Months EndedSix Months Ended
June 30,June 30,
2020201920202019
Balance as of beginning of period$9,836,797  $9,679,681  $9,868,404  $9,048,796  
Less: reinsurance reserves recoverable1,902,749  1,905,3291,927,624  1,708,272  
Less: deferred charge assets on retroactive reinsurance257,832  100,154  272,462  86,585  
Less: cumulative effect of change in accounting principle on the determination of the allowance for estimated uncollectible reinsurance balances (1)
    643    
Net balance as of beginning of period7,676,216  7,674,1987,667,675  7,253,939  
Net incurred losses and LAE:
  Current period119,613  139,455235,118  301,376  
  Prior periods67,079  7,099(5,126) 101,477  
  Total net incurred losses and LAE186,692  146,554229,992  402,853  
Net paid losses:
  Current period(11,303) (43,810)(15,110) (70,946) 
  Prior periods(369,984) (409,388)(726,003) (858,389) 
  Total net paid losses(381,287) (453,198)(741,113) (929,335) 
Effect of exchange rate movement40,815  (31,672) (105,268) (11,993) 
Acquired on purchase of subsidiaries  686    686  
Assumed business954,323  45,463  1,425,473  665,881  
Net balance as of June 308,476,759  7,382,031  8,476,759  7,382,031  
Plus: reinsurance reserves recoverable (2)
1,858,161  1,873,766  1,858,161  1,873,766  
Plus: deferred charge assets on retroactive reinsurance258,516  99,094  258,516  99,094  
Balance as of June 30$10,593,436  $9,354,891  $10,593,436  $9,354,891  
(1) The Company adopted ASU 2016-13 and the related amendments on January 1, 2020. Refer to Note 1 - "Significant Accounting Policies" for further details. This amount excludes $0.4 million related to the adoption impact of ASU 2016-13 on StarStone US which has been classified as a discontinued operation with the related assets and liabilities disclosed as held-for-sale on our consolidated balance sheets.
(2) Net of allowance for estimated uncollectible reinsurance.

The tables below provide the components of net incurred losses and LAE by segment and for our other activities:
Three Months Ended June 30, 2020
 Non-life Run-offAtriumStarStoneOtherTotal
Net losses paid$283,402  $14,219  $80,667  $2,999  $381,287  
Net change in case and LAE reserves(76,106) 795  (30,764) 610  (105,465) 
Net change in IBNR reserves(255,782) 710  (3,323) 1,584  (256,811) 
Increase (reduction) in estimates of net ultimate losses(48,486) 15,724  46,580  5,193  19,011  
Increase (reduction) in provisions for unallocated LAE(12,425)   27,885    15,460  
Amortization of deferred charge assets11,062        11,062  
Amortization of fair value adjustments7,280  (132) (32)   7,116  
Changes in fair value - fair value option134,043        134,043  
Net incurred losses and LAE$91,474  $15,592  $74,433  $5,193  $186,692  
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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
Three Months Ended June 30, 2019
 Non-life
Run-off
AtriumStarStoneOtherTotal
Net losses paid$329,103  $17,777  $104,497  $1,821  $453,198  
Net change in case and LAE reserves(119,834) 259  38,088  759  (80,728) 
Net change in IBNR reserves(238,232) (4,801) (23,798) 1,885  (264,946) 
Increase (reduction) in estimates of net ultimate losses(28,963) 13,235  118,787  4,465  107,524  
Increase (reduction) in provisions for unallocated LAE(10,896)   540    (10,356) 
Amortization of deferred charge assets3,934        3,934  
Amortization of fair value adjustments7,715  (187) (38)   7,490  
Changes in fair value - fair value option37,962        37,962  
Net incurred losses and LAE$9,752  $13,048  $119,289  $4,465  $146,554  

Six Months Ended June 30, 2020
 Non-life Run-offAtriumStarStoneOtherTotal
Net losses paid$542,368  $31,227  $161,473  $6,045  $741,113  
Net change in case and LAE reserves(250,686) 934  (66,343) 862  (315,233) 
Net change in IBNR reserves(360,179) 11,841  25,611  768  (321,959) 
Increase (reduction) in estimates of net ultimate losses(68,497) 44,002  120,741  7,675  103,921  
Increase (reduction) in provisions for unallocated LAE(19,904)   28,495    8,591  
Amortization of deferred charge assets25,692        25,692  
Amortization of fair value adjustments16,343  6  (367)   15,982  
Changes in fair value - fair value option75,806        75,806  
Net incurred losses and LAE$29,440  $44,008  $148,869  $7,675  $229,992  

Six Months Ended June 30, 2019
 Non-life
Run-off
AtriumStarStoneOtherTotal
Net losses paid$678,172  $40,090  $206,417  $4,656  $929,335  
Net change in case and LAE reserves(197,535) (154) 31,368  1,354  (164,967) 
Net change in IBNR reserves(471,127) (10,618) 19,755  3,411  (458,579) 
Increase (reduction) in estimates of net ultimate losses9,510  29,318  257,540  9,421  305,789  
Increase (reduction) in provisions for unallocated LAE(26,071)   927    (25,144) 
Amortization of deferred charge assets10,997      10,997  
Amortization of fair value adjustments16,495  944  (231)   17,208  
Changes in fair value - fair value option94,003        94,003  
Net incurred losses and LAE$104,934  $30,262  $258,236  $9,421  $402,853  
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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
Non-life Run-off Segment
        The table below provides a reconciliation of the beginning and ending liability for losses and LAE for the Non-life Run-off segment:
Three Months EndedSix Months Ended
June 30,June 30,
2020201920202019
Balance as of beginning of period$8,216,850  $8,154,974  $8,295,361  $7,540,662  
Less: reinsurance reserves recoverable1,461,008  1,579,646  1,543,614  1,366,123  
Less: deferred charge assets on retroactive insurance257,832  100,154  272,462  86,585  
Plus: cumulative effect of change in accounting principal on allowance for estimated uncollectible reinsurance (1)
    703    
Net balance as of beginning of period6,498,010  6,475,174  6,479,988  6,087,954  
Net incurred losses and LAE:
  Current period8,086  34,375  15,935  83,446  
  Prior periods83,388  (24,623) 13,505  21,488  
  Total net incurred losses and LAE91,474  9,752  29,440  104,934  
Net paid losses:
  Current period202  (20,877) (1,038) (38,891) 
  Prior periods(283,604) (308,226) (541,330) (639,281) 
  Total net paid losses(283,402) (329,103) (542,368) (678,172) 
Effect of exchange rate movement30,824  (31,830) (101,304) (11,141) 
Acquired on purchase of subsidiaries  686    686  
Assumed business954,323  45,463  1,425,473  665,881  
Net balance as of June 307,291,229  6,170,142  7,291,229  6,170,142  
Plus: reinsurance reserves recoverable (2)
1,429,489  1,534,427  1,429,489  1,534,427  
Plus: deferred charge assets on retroactive reinsurance258,516  99,094  258,516  99,094  
Balance as of June 30$8,979,234  $7,803,663  $8,979,234  $7,803,663  
(1) The Company adopted ASU 2016-13 and the related amendments on January 1, 2020. Refer to Note 1 - "Significant Accounting Policies" for further details.
(2) Net of allowance for estimated uncollectible reinsurance.

Net incurred losses and LAE in the Non-life Run-off segment were as follows:
Three Months Ended June 30,
 20202019
 Prior
Period
Current
Period
TotalPrior
Period
Current
Period
Total
Net losses paid$283,604  $(202) $283,402  $308,226  $20,877  $329,103  
Net change in case and LAE reserves(75,276) (830) (76,106) (121,377) 1,543  (119,834) 
Net change in IBNR reserves(264,900) 9,118  (255,782) (249,923) 11,691  (238,232) 
Increase (reduction) in estimates of net ultimate losses(56,572) 8,086  (48,486) (63,074) 34,111  (28,963) 
Increase (reduction) in provisions for unallocated LAE(12,425)   (12,425) (11,160) 264  (10,896) 
Amortization of deferred charge assets11,062    11,062  3,934    3,934  
Amortization of fair value adjustments7,280    7,280  7,715    7,715  
Changes in fair value - fair value option134,043    134,043  37,962    37,962  
Net incurred losses and LAE$83,388  $8,086  $91,474  $(24,623) $34,375  $9,752  


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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
Net change in case and LAE reserves comprises the movement during the period in specific case reserve liabilities as a result of claims settlements or changes advised to us by our policyholders and attorneys, less changes in case reserves recoverable advised by us to our reinsurers as a result of the settlement or movement of assumed claims. Net change in IBNR represents the gross change in our actuarial estimates of IBNR, less amounts recoverable.
Three Months Ended June 30, 2020
The increase in net incurred losses and LAE for the three months ended June 30, 2020 of $91.5 million included net incurred losses and LAE of $8.1 million related to current period net earned premium, primarily in respect of the run-off business acquired with the AmTrust RITC transactions. Excluding current period net incurred losses and LAE of $8.1 million, the increase in net incurred losses and LAE relating to prior periods was $83.4 million, which was attributable to an increase in the fair value of liabilities of $134.0 million related to our assumed retroactive reinsurance agreements for which we have elected the fair value option primarily due to narrowing credit spreads on corporate bond yields in the period, amortization of the deferred charge assets of $11.1 million and amortization of fair value adjustments over the estimated payout period relating to companies acquired of $7.3 million, partially offset by a reduction in estimates of net ultimate losses of $56.6 million and a reduction in provisions for unallocated LAE of $12.4 million relating to 2020 run-off activity. The reduction in estimates of net ultimate losses relating to prior periods of $56.6 million for the three months ended June 30, 2020 included a net reduction in case and IBNR reserves of $340.2 million, partially offset by net losses paid of $283.6 million.
Three Months Ended June 30, 2019
Net incurred losses and LAE for the three months ended June 30, 2019 of $9.8 million included net incurred losses and LAE of $34.4 million related to current period net earned premium, primarily for the run-off business acquired with the AmTrust RITC transactions and the acquisition of Maiden Reinsurance North America, Inc. ("Maiden Re North America"). Excluding current period net incurred losses and LAE of $34.4 million, the reduction in net incurred losses and LAE relating to prior periods was $24.6 million, which was attributable to a reduction in estimates of net ultimate losses of $63.1 million and a reduction in provisions for unallocated LAE of $11.2 million relating to 2019 run-off activity, partially offset by an increase in the fair value of liabilities of $38.0 million related to our assumed retroactive reinsurance agreements for which we have elected the fair value option, amortization of fair value adjustments over the estimated payout period relating to companies acquired of $7.7 million and amortization of the deferred charge assets of $3.9 million. The reduction in estimates of net ultimate losses relating to prior periods of $63.1 million for the three months ended June 30, 2019 included a net reduction in case and IBNR reserves of $371.3 million, partially offset by net losses paid of $308.2 million.

Six Months Ended June 30,
 20202019
 Prior
Period
Current
Period
TotalPrior
Period
Current
Period
Total
Net losses paid$541,330  $1,038  $542,368  $639,281  $38,891  $678,172  
Net change in case and LAE reserves(251,528) 842  (250,686) (218,950) 21,415  (197,535) 
Net change in IBNR reserves(374,234) 14,055  (360,179) (493,738) 22,611  (471,127) 
Increase (reduction) in estimates of net ultimate losses(84,432) 15,935  (68,497) (73,407) 82,917  9,510  
Increase (reduction) in provisions for unallocated LAE(19,904)   (19,904) (26,600) 529  (26,071) 
Amortization of deferred charge assets25,692    25,692  10,997    10,997  
Amortization of fair value adjustments16,343    16,343  16,495    16,495  
Changes in fair value - fair value option75,806    75,806  94,003    94,003  
Net incurred losses and LAE$13,505  $15,935  $29,440  $21,488  $83,446  $104,934  

Six Months Ended June 30, 2020
The increase in net incurred losses and LAE for the six months ended June 30, 2020 of $29.4 million included net incurred losses and LAE of $15.9 million related to current period net earned premium, primarily for the run-off business acquired with the AmTrust RITC transactions. Excluding current period net incurred losses and LAE of $15.9 million, the increase in net incurred losses and LAE liabilities relating to prior periods was $13.5 million, which was attributable to an increase in the fair value of liabilities of $75.8 million related to our assumed retroactive reinsurance agreements for which we have elected the fair value option primarily due to declining interest rates on
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NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
corporate bond yields in the period, amortization of the deferred charge assets of $25.7 million and amortization of fair value adjustments over the estimated payout period relating to companies acquired of $16.3 million, partially offset by a reduction in estimates of net ultimate losses of $84.4 million and a reduction in provisions for unallocated LAE of $19.9 million relating to 2020 run-off activity. The reduction in estimates of net ultimate losses relating to prior periods of $84.4 million for the six months ended June 30, 2020 included a net change in case and IBNR reserves of $625.8 million, partially offset by net losses paid of $541.3 million.
Six Months Ended June 30, 2019
The increase in net incurred losses and LAE for the six months ended June 30, 2019 of $104.9 million included net incurred losses and LAE of $83.4 million related to current period net earned premium, primarily for the run-off business acquired with the AmTrust RITC transactions and the acquisition of Maiden Re North America. Excluding current period net incurred losses and LAE of $83.4 million, the increase in net incurred losses and LAE liabilities relating to prior periods was $21.5 million, which was attributable to an increase in the fair value of liabilities of $94.0 million related to our assumed retroactive reinsurance agreements for which we have elected the fair value option, amortization of fair value adjustments over the estimated payout period relating to companies acquired of $16.5 million and amortization of the deferred charge assets of $11.0 million, partially offset by a reduction in estimates of net ultimate losses of $73.4 million and a reduction in provisions for unallocated LAE of $26.6 million relating to 2019 run-off activity. The reduction in estimates of net ultimate losses of $73.4 million for the six months ended June 30, 2019 included a net change in case and IBNR reserves of $712.7 million, partially offset by net losses paid of $639.3 million.

Atrium
The table below provides a reconciliation of the beginning and ending liability for losses and LAE for the Atrium segment:
Three Months EndedSix Months Ended
June 30,June 30,
2020201920202019
Balance as of beginning of period $243,610  $229,380  $231,672  $241,284  
Less: reinsurance reserves recoverable33,435  31,682  28,816  38,768  
Less: cumulative effect of change in accounting principal on allowance for estimated uncollectible reinsurance (1)
    851    
Net balance as of beginning of period210,175  197,698  202,005  202,516  
Net incurred losses and LAE:
  Current period19,042  17,859  46,946  36,096  
  Prior periods(3,450) (4,811) (2,938) (5,834) 
  Total net incurred losses and LAE15,592  13,048  44,008  30,262  
Net paid losses:
  Current period(5,002) (7,251) (9,287) (15,144) 
  Prior periods(9,217) (10,526) (21,940) (24,946) 
  Total net paid losses(14,219) (17,777) (31,227) (40,090) 
Effect of exchange rate movement933  1  (2,305) 282  
Net balance as of June 30212,481  192,970  212,481  192,970  
Plus: reinsurance reserves recoverable (2)
27,250  29,606  27,250  29,606  
Balance as of June 30$239,731  $222,576  $239,731  $222,576  
(1) The Company adopted ASU 2016-13 and the related amendments on January 1, 2020. Refer to Note 1 - "Significant Accounting Policies" for further details.
(2) Net of allowance for estimated uncollectible reinsurance.

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NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
Net incurred losses and LAE in the Atrium segment were as follows:
Three Months Ended June 30,
 20202019
 Prior
Period
Current
Period
TotalPrior
Period
Current
Period
Total
Net losses paid$9,217  $5,002  $14,219  $10,526  $7,251  $17,777  
Net change in case and LAE reserves(4,191) 4,986  795  (3,830) 4,089  259  
Net change in IBNR reserves(8,344) 9,054  710  (11,320) 6,519  (4,801) 
Increase (reduction) in estimates of net ultimate losses(3,318) 19,042  15,724  (4,624) 17,859  13,235  
Amortization of fair value adjustments(132)   (132) (187)   (187) 
Net incurred losses and LAE$(3,450) $19,042  $15,592  $(4,811) $17,859  $13,048  

Net change in case and LAE reserves comprises the movement during the period in specific case reserve liabilities as a result of claims settlements or changes advised to us by our policyholders and attorneys, less changes in case reserves recoverable advised by us to our reinsurers as a result of the settlement or movement of assumed claims. Net change in IBNR represents the gross change in our actuarial estimates of IBNR, less amounts recoverable.
Three Months Ended June 30, 2020 and 2019
Net incurred losses and LAE for the three months ended June 30, 2020 and 2019 were $15.6 million and $13.0 million, respectively. Net favorable prior period loss development was $3.5 million for the three months ended June 30, 2020 compared to $4.8 million for the three months ended June 30, 2019. The current period net favorable prior period loss development was driven by favorable development across several lines of business; notably, the non-marine direct and facultative line. Excluding prior period loss development, net incurred losses and LAE for the three months ended June 30, 2020 were $19.0 million and included $4.3 million of losses related to the COVID-19 pandemic. Excluding prior period loss development, net incurred losses and LAE for the three months ended June 30, 2019 were $17.9 million.

Six Months Ended June 30,
 20202019
 Prior PeriodCurrent PeriodTotalPrior PeriodCurrent PeriodTotal
Net losses paid$21,940  $9,287  $31,227  $24,946  $15,144  $40,090  
Net change in case and LAE reserves(7,225) 8,159  934  (10,172) 10,018  (154) 
Net change in IBNR reserves(17,659) 29,500  11,841  (21,552) 10,934  (10,618) 
Increase (reduction) in estimates of net ultimate losses(2,944) 46,946  44,002  (6,778) 36,096  29,318  
Amortization of fair value adjustments6    6  944    944  
Net incurred losses and LAE$(2,938) $46,946  $44,008  $(5,834) $36,096  $30,262  

Six Months Ended June 30, 2020 and 2019
Net incurred losses and LAE for the six months ended June 30, 2020 and 2019 were $44.0 million and $30.3 million, respectively. Net favorable prior year loss development was $2.9 million and $5.8 million for the six months ended June 30, 2020 and 2019, respectively. The current period net favorable prior period loss development was driven by favorable development across several lines of business; notably, the non-marine direct and facultative line. Excluding prior period loss development, net incurred losses and LAE for the three months ended June 30, 2020 were $46.9 million and included $12.8 million of losses related to the COVID-19 pandemic. Excluding prior period loss development, net incurred losses and LAE for the three months ended June 30, 2019 were $36.1 million.
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NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
StarStone
The table below provides a reconciliation of the beginning and ending liability for losses and LAE for our StarStone segment:
Three Months EndedSix Months Ended
June 30,June 30,
2020201920202019
Balance as of beginning of period$1,353,824  $1,274,345  $1,318,294  $1,247,989  
Less: reinsurance reserves recoverable408,306  294,001  355,194  303,381  
Less: cumulative effect of change in accounting principal on allowance for estimated uncollectible reinsurance (1)
    495    
Net balance as of beginning of period945,518  980,344  962,605  944,608  
Net incurred losses and LAE:
  Current period87,273  82,657  163,680  172,262  
  Prior periods(12,840) 36,632  (14,811) 85,974  
  Total net incurred losses and LAE74,433  119,289  148,869  258,236  
Net paid losses:
  Current period(6,135) (15,072) (4,387) (15,971) 
  Prior periods(74,532) (89,425) (157,086) (190,446) 
  Total net paid losses(80,667) (104,497) (161,473) (206,417) 
Effect of exchange rate movement9,057  157  (1,660) (1,134) 
Net balance as of June 30948,341  995,293  948,341  995,293  
Plus: reinsurance reserves recoverable (2)
401,422  309,733  401,422  309,733  
Balance as of June 30$1,349,763  $1,305,026  $1,349,763  $1,305,026  
(1) The Company adopted ASU 2016-13 and the related amendments on January 1, 2020. Refer to Note 1 - "Significant Accounting Policies" for further details. This amount excludes $0.4 million related to the adoption impact of ASU 2016-13 on StarStone US which has been classified as a discontinued operation with the related assets and liabilities disclosed as held-for-sale on our consolidated balance sheets.
(2) Net of allowance for estimated uncollectible reinsurance.

Net incurred losses and LAE in the StarStone segment were as follows:
Three Months Ended June 30,
 20202019
 Prior PeriodCurrent PeriodTotalPrior PeriodCurrent PeriodTotal
Net losses paid$74,532  $6,135  $80,667  $89,425  $15,072  $104,497  
Net change in case and LAE reserves(25,402) (5,362) (30,764) 2,648  35,440  38,088  
Net change in IBNR reserves(62,212) 58,889  (3,323) (56,130) 32,332  (23,798) 
Increase (reduction) in estimates of net ultimate losses(13,082) 59,662  46,580  35,943  82,844  118,787  
Increase (reduction) in provisions for unallocated LAE274  27,611  27,885  727  (187) 540  
Amortization of fair value adjustments(32)   (32) (38)   (38) 
Net incurred losses and LAE$(12,840) $87,273  $74,433  $36,632  $82,657  $119,289  

Net change in case and LAE reserves comprises the movement during the period in specific case reserve liabilities as a result of claims settlements or changes advised to us by our policyholders and attorneys, less changes in case reserves recoverable advised by us to our reinsurers as a result of the settlement or movement of assumed claims. Net change in IBNR represents the gross change in our actuarial estimates of IBNR, less amounts recoverable.
Three Months Ended June 30, 2020 and 2019
Net incurred losses and LAE for the three months ended June 30, 2020 and 2019 were $74.4 million and $119.3 million, respectively. Net favorable prior period loss development was $12.8 million for the three months ended June 30, 2020 compared to net unfavorable prior period loss development of $36.6 million for the three months ended June 30, 2019. Net favorable prior period loss development for the three months ended June 30,
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NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
2020 was driven by favorable development in the casualty lines of business. Net adverse prior period loss development for the three months ended June 30, 2019 was primarily related to development on lines of business that we had either exited or had been subject to remediation as part of our underwriting repositioning initiatives before our decision to place StarStone International into run-off. Excluding prior period net loss development, net incurred losses and LAE for the three months ended June 30, 2020 were $87.3 million and included $28.1 million of exit costs associated with the StarStone International Run-Off and a $3.1 million reduction in net incurred losses and LAE related to the COVID-19 pandemic. Excluding prior period net loss development, net incurred losses and LAE for the three months ended June 30, 2019 were $82.7 million.

Six Months Ended June 30,
 20202019
 Prior PeriodCurrent PeriodTotalPrior PeriodCurrent PeriodTotal
Net losses paid$157,086  $4,387  $161,473  $190,446  $15,971  $206,417  
Net change in case and LAE reserves(65,730) (613) (66,343) (13,672) 45,040  31,368  
Net change in IBNR reserves(105,983) 131,594  25,611  (90,096) 109,851  19,755  
Increase (reduction) in estimates of net ultimate losses(14,627) 135,368  120,741  86,678  170,862  257,540  
Increase (reduction) in provisions for unallocated LAE183  28,312  28,495  (473) 1,400  927  
Amortization of fair value adjustments(367)   (367) (231)   (231) 
Net incurred losses and LAE$(14,811) $163,680  $148,869  $85,974  $172,262  $258,236  

Six Months Ended June 30, 2020 and 2019
Net incurred losses and LAE for the six months ended June 30, 2020 and 2019 were $148.9 million and $258.2 million, respectively. Net favorable prior period loss development was $14.8 million for the six months ended June 30, 2020 compared to net unfavorable prior period loss development of $86.0 million for the six months ended June 30, 2019. Net favorable prior period loss development for the six months ended June 30, 2020 was driven by favorable development in the casualty lines of business. Net unfavorable prior period loss development for the six months ended June 30, 2020 was primarily related to development on lines of business that we had either exited or had been subject to remediation as part of our underwriting repositioning initiatives before our decision to place StarStone International into run-off. Excluding prior period loss development, net incurred losses and LAE for the six months ended June 30, 2020 were $163.7 million and included $28.1 million of exit costs associated with the StarStone International Run-Off and $21.5 million related to the COVID-19 pandemic. Excluding prior period loss development, net incurred losses and LAE for the six months ended June 30, 2019 were $172.3 million.

10. DEFENDANT ASBESTOS AND ENVIRONMENTAL LIABILITIES
We acquired DCo LLC ("DCo") on December 30, 2016, and Morse TEC on October 30, 2019, as described in Note 3 - "Acquisitions" to the consolidated financial statements contained in our Annual Report on Form 10-K for the year ended December 31, 2019. DCo and Morse TEC hold liabilities associated with personal injury asbestos claims and environmental claims arising from their legacy manufacturing operations. These companies continue to process asbestos personal injury claims in the normal course of business. Defendant asbestos liabilities on our consolidated balance sheets include amounts for loss payments and defense costs for pending and future asbestos-related claims, determined using standard actuarial techniques for asbestos exposures. Defendant environmental liabilities include estimated clean-up costs associated with the acquired companies' former operations based on engineering reports.
Insurance balances recoverable on our consolidated balance sheets include estimated insurance recoveries relating to these liabilities. The recorded asset represents our assessment of the capacity of the insurance agreements to indemnify our subsidiaries for the anticipated defense and loss payments for pending claims and projected future claims. The recognition of these recoveries is based on an assessment of the right to recover under the respective contracts and on the financial strength of the insurers. The recorded asset does not represent the limits of our insurance coverage, but rather the amount we would expect to recover if the accrued and projected loss and defense costs were paid in full.

Included within insurance balances recoverable and defendant asbestos and environmental liabilities are the
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NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
fair value adjustments that were initially recognized upon acquisition. These fair value adjustments are amortized in proportion to the actual payout of claims and recoveries. The carrying value of the asbestos and environmental liabilities, insurance recoveries, future estimated expenses and the fair value adjustments related to DCo and Morse TEC as of June 30, 2020 and December 31, 2019 were as follows:
June 30, 2020December 31, 2019
Defendant asbestos and environmental liabilities:
Defendant asbestos liabilities$1,050,279  $1,100,593  
Defendant environmental liabilities9,483  10,279  
Estimated future expenses48,634  51,637  
Fair value adjustments(300,334) (314,824) 
Defendant asbestos and environmental liabilities808,062  847,685  
Insurance balances recoverable:
Insurance recoveries related to defendant asbestos and environmental liabilities523,123  549,593  
Fair value adjustments(94,846) (100,738) 
Insurance balances recoverable428,277  448,855  
Net liabilities relating to defendant asbestos and environmental exposures$379,785  $398,830  

The table below provides a consolidated reconciliation of the beginning and ending liability for defendant asbestos and environmental exposures for the three and six months ended June 30, 2020 and 2019:
Three Months EndedSix Months Ended
June 30,June 30,
2020201920202019
Balance as of beginning of period$822,716  $197,511  $847,685  $203,320  
Less: Insurance balances recoverable435,613  130,431  448,855  135,808  
Plus: Cumulative effect of change in accounting principle on the determination of the allowance for estimated uncollectible insurance balances (1)
    3,167    
Net balance as of beginning of period387,103  67,080  401,997  67,512  
Total net paid claims(7,495) (1,873) (914) 878  
Amounts recorded in other (income) expense:
Change in estimate of ultimate net liabilities(1,978) (3,100) (26,893) (4,259) 
Increase (reduction) in estimated future expenses(975) (179) (3,003) (2,304) 
Amortization of fair value adjustments3,130  100  8,598  201  
Total other expense (income)177  (3,179) (21,298) (6,362) 
Net balance as at June 30
379,785  62,028  379,785  62,028  
Plus: Insurance balances recoverable (2)
428,277  122,236  428,277  122,236  
Balance as at June 30
$808,062  $184,264  $808,062  $184,264  
(1) The Company adopted ASU 2016-13 and the related amendments on January 1, 2020. Refer to Note 1 - "Significant Accounting Policies" for further details.
(2) Net of allowance for estimated uncollectible insurance balances.
For further details on the methodologies used for determining liabilities, refer to Note 11 - "Defendant Asbestos and Environmental Liabilities" to the consolidated financial statements contained in our Annual Report on Form 10-K for the year ended December 31, 2019.

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NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
Allowance for Estimated Uncollectible Insurance Balances Recoverable on Defendant Asbestos Liabilities
We evaluate and monitor the credit risk related to our insurers and an allowance for estimated uncollectible insurance balances recoverable on our defendant asbestos liabilities ("allowance for estimated uncollectible insurance") is established for amounts considered potentially uncollectible.
With respect to our process for determining the allowances for estimated uncollectible insurance, we adopted ASU 2016-13 and the related amendments on January 1, 2020 and recorded a cumulative effect adjustment of $3.2 million to reduce the opening retained earnings on the initial adoption of the guidance. Our allowance for estimated uncollectible insurance is derived based on various data sources, multiple key inputs and forecast scenarios. These include the duration of the collection period, credit quality, changes in insurer credit standing, default rates specific to the individual insurer, the geographical location of the insurer, contractual disputes with insurers over individual contentious claims, contract language or coverage issues, industry analyst reports and consensus economic forecasts.
To determine the allowance for estimated uncollectible insurance, we similarly use the PD and LGD methodology as described in Note 7 - "Reinsurance Balances Recoverable on Paid and Unpaid Losses" above.
During the three and six months ended June 30, 2020, we did not have any write-offs charged against the allowance for estimated uncollectible insurance or any recoveries of amounts previously written off. The table below provides a reconciliation of the beginning and ending allowance for estimated uncollectible insurance balances related to our defendant asbestos liabilities, for the three and six months ended June 30, 2020:
Three Months EndedSix Months Ended
June 30, 2020June 30, 2020
Allowance for estimated uncollectible insurance balances, beginning of period$6,985  $3,818  
Cumulative effect of change in accounting principle  3,167  
Current period change in the allowance1,361  1,361  
Allowance for estimated uncollectible insurance balances, end of period$8,346  $8,346  

11. FAIR VALUE MEASUREMENTS

Fair Value Hierarchy
Fair value is defined as the price at which to sell an asset or transfer a liability (i.e. the "exit price") in an orderly transaction between market participants. We use a fair value hierarchy that gives the highest priority to quoted prices in active markets and the lowest priority to unobservable data. The hierarchy is broken down into three levels as follows:
Level 1 - Valuations based on unadjusted quoted prices in active markets for identical assets or liabilities that we have the ability to access. Valuation adjustments and block discounts are not applied to Level 1 instruments.
Level 2 - Valuations based on quoted prices in active markets for similar assets or liabilities, quoted prices for identical assets or liabilities in inactive markets, or for which significant inputs are observable (e.g. interest rates, yield curves, prepayment speeds, default rates, loss severities, etc.) or can be corroborated by observable market data.
Level 3 - Valuations based on unobservable inputs where there is little or no market activity. Unadjusted third party pricing sources or management's assumptions and internal valuation models may be used to determine the fair values.
In addition, certain of our other investments are measured at fair value using net asset value ("NAV") per share (or its equivalent) as a practical expedient and have not been classified within the fair value hierarchy above. We have categorized our assets and liabilities that are recorded at fair value on a recurring basis among levels based on the observability of inputs, or at fair value using NAV per share (or its equivalent) as follows:
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NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
 June 30, 2020
Quoted Prices in
Active Markets for
Identical Assets
(Level 1)
Significant
Other Observable
Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
Fair Value Based on NAV as Practical ExpedientTotal Fair
Value
Investments:
Short-term and fixed maturity investments:
U.S. government and agency$  $546,471  $  $—  $546,471  
U.K. government  107,680    —  107,680  
Other government  503,312    —  503,312  
Corporate  5,565,100    —  5,565,100  
Municipal  165,720    —  165,720  
Residential mortgage-backed  436,832    —  436,832  
Commercial mortgage-backed  840,367    —  840,367  
Asset-backed  666,352    —  666,352  
$  $8,831,834  $  $—  $8,831,834  
Other assets included within funds held - directly managed  15,376    —  15,376  
Equities:
Publicly traded equity investments$254,501  $19,881  $  $—  $274,382  
Exchange-traded funds95,389      —  95,389  
Privately held equity investments    271,000  —  271,000  
$349,890  $19,881  $271,000  $—  $640,771  
Other investments:
Hedge funds$  $  $  $1,757,982  $1,757,982  
Fixed income funds  415,149    169,458  584,607  
Equity funds  88,396    279,918  368,314  
Private equity funds      315,070  315,070  
CLO equities  84,188      84,188  
CLO equity funds      123,299  123,299  
Private credit funds      38,094  38,094  
Other    314  6,917  7,231  
$  $587,733  $314  $2,690,738  $3,278,785  
Total Investments$349,890  $9,454,824  $271,314  $2,690,738  $12,766,766  
Cash and cash equivalents$219,149  $48,915  $  $  $268,064  
Reinsurance balances recoverable on paid and unpaid losses:$  $  $671,384  $—  $671,384  
Other Assets:
Derivatives qualifying as hedges$  $115  $  $—  $115  
Derivatives not qualifying as hedges  863    —  863  
Derivative instruments $  $978  $  $—  $978  
Losses and LAE:$  $  $2,454,539  $—  $2,454,539  
Other Liabilities:
Derivatives qualifying as hedges$  $5,585  $  $—  $5,585  
Derivatives not qualifying as hedges  2,242    —  2,242  
Derivative instruments $  $7,827  $  $—  $7,827  
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NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
 December 31, 2019
 Quoted Prices in
Active Markets for
Identical Assets
(Level 1)
Significant
Other Observable
Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
Fair Value Based on NAV as Practical ExpedientTotal Fair
Value
Investments:
Short-term and fixed maturity investments:
U.S. government and agency$  $696,077  $  $—  $696,077  
U.K government  161,772    —  161,772  
Other government  702,856    —  702,856  
Corporate  5,448,270    —  5,448,270  
Municipal  140,687    —  140,687  
Residential mortgage-backed  400,914    —  400,914  
Commercial mortgage-backed  813,746    —  813,746  
Asset-backed  670,235    —  670,235  
$  $9,034,557  $  $—  $9,034,557  
Other assets included within funds held - directly managed$  $14,207  $  $—  $14,207  
Equities:
Publicly traded equity investments$297,310  $30,565  $  $—  $327,875  
Exchange-traded funds133,047      —  133,047  
Privately held equity investments    265,799  —  265,799  
$430,357  $30,565  $265,799  $—  $726,721  
Other investments:
Hedge funds$  $  $  $1,121,904  $1,121,904  
Fixed income funds  398,143    82,896  481,039  
Equity funds  111,040    299,109  410,149  
Private equity funds      323,496  323,496  
CLO equities    87,555    87,555  
CLO equity funds      87,509  87,509  
Other  34  314  6,031  6,379  
$  $509,217  $87,869  $1,920,945  $2,518,031  
Total Investments$430,357  $9,588,546  $353,668  $1,920,945  $12,293,516  
Cash and cash equivalents$144,984  $222,191  $  $  $367,175  
Reinsurance balances recoverable on paid and unpaid losses:$  $  $695,518  $—  $695,518  
Other Assets:
Derivatives qualifying as hedges$  $642  $  $—  $642  
Derivatives not qualifying as hedges  1,369    —  1,369  
Derivative instruments $  $2,011  $  $—  $2,011  
Losses and LAE:$  $  $2,621,122  $—  $2,621,122  
Other Liabilities:
Derivatives qualifying as hedges$  $11,452  $  $—  $11,452  
Derivatives not qualifying as hedges  4,106    —  4,106  
Derivative instruments $  $15,558  $  $—  $15,558  
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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
Valuation Methodologies of Financial Instruments Measured at Fair Value

Short-term and Fixed Maturity Investments
The fair values for all securities in the short-term and fixed maturity investments and funds held - directly managed portfolios are independently provided by the investment accounting service providers, investment managers and investment custodians, each of which utilize internationally recognized independent pricing services. We record the unadjusted price provided by the investment accounting service providers, investment managers or investment custodians and validate this price through a process that includes, but is not limited to: (i) comparison of prices against alternative pricing sources; (ii) quantitative analysis (e.g. comparing the quarterly return for each managed portfolio to its target benchmark); (iii) evaluation of methodologies used by external parties to estimate fair value, including a review of the inputs used for pricing; and (iv) comparing the price to our knowledge of the current investment market. Our internal price validation procedures and review of fair value methodology documentation provided by independent pricing services have not historically resulted in adjustment in the prices obtained from the pricing service.
The independent pricing services used by the investment accounting service providers, investment managers and investment custodians obtain actual transaction prices for securities that have quoted prices in active markets. Where we utilize single unadjusted broker-dealer quotes, they are generally provided by market makers or broker-dealers who are recognized as market participants in the markets for which they are providing the quotes. For determining the fair value of securities that are not actively traded, in general, pricing services use "matrix pricing" in which the independent pricing service uses observable market inputs including, but not limited to, reported trades, benchmark yields, broker-dealer quotes, interest rates, prepayment speeds, default rates and other such inputs as are available from market sources to determine a reasonable fair value.
The following describes the techniques generally used to determine the fair value of our short-term and fixed maturity investments by asset class, including the investments underlying the funds held - directly managed.
U.S. government and agency securities consist of securities issued by the U.S. Treasury and mortgage pass-through agencies such as the Federal National Mortgage Association, the Federal Home Loan Mortgage Corporation and other agencies. Non-U.S. government securities consist of bonds issued by non-U.S. governments and agencies along with supranational organizations. The significant inputs used to determine the fair value of these securities include the spread above the risk-free yield curve, reported trades and broker-dealer quotes. These are considered to be observable market inputs and, therefore, the fair values of these securities are classified as Level 2.
Corporate securities consist primarily of investment-grade debt of a wide variety of corporate issuers and industries. The fair values of these securities are determined using the spread above the risk-free yield curve, reported trades, broker-dealer quotes, benchmark yields, and industry and market indicators. These are considered observable market inputs and, therefore, the fair values of these securities are classified as Level 2. Where pricing is unavailable from pricing services, such as in periods of low trading activity or when transactions are not orderly, we obtain non-binding quotes from broker-dealers. Where significant inputs are unable to be corroborated with market observable information, we classify the securities as Level 3.
Municipal securities consist primarily of bonds issued by U.S.-domiciled state and municipal entities. The fair values of these securities are determined using the spread above the risk-free yield curve, reported trades, broker-dealer quotes and benchmark yields. These are considered observable market inputs and, therefore, the fair values of these securities are classified as Level 2.
Asset-backed securities consist primarily of investment-grade bonds backed by pools of loans with a variety of underlying collateral. Residential and commercial mortgage-backed securities include both agency and non-agency originated securities. Where pricing is unavailable from pricing services, we obtain non-binding quotes from broker-dealers. This is generally the case when there is a low volume of trading activity and current transactions are not orderly. The significant inputs used to determine the fair value of these securities include the spread above the risk-free yield curve, reported trades, benchmark yields, prepayment speeds and default rates. The fair values of these securities are classified as Level 2 if the significant inputs are market observable. Where significant inputs are unable to be corroborated with market observable information, we classify the securities as Level 3.
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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
Equities
Our investments in equities consist of a combination of publicly and privately traded investments. Our publicly traded equity investments in common and preferred stocks predominantly trade on major exchanges and are managed by our external advisors. Our exchange-traded funds also trade on major exchanges. Our publicly traded equities are widely diversified and there is no significant concentration in any specific industry. We use an internationally recognized pricing service to estimate the fair value of our publicly traded equities and exchange-traded funds. We have categorized the majority of our publicly traded equity investments, other than preferred stock, and our exchange-traded funds as Level 1 investments because the fair values of these investments are based on unadjusted quoted prices in active markets for identical assets. One equity security is trading in an inactive market and, as a result has been classified as Level 2. The fair value estimates of our investments in publicly traded preferred stock are based on observable market data and, as a result, have been categorized as Level 2.
Our privately held equity investments in common and preferred stocks are direct investments in companies that we believe offer attractive risk adjusted returns and/or offer other strategic advantages. Each investment may have its own unique terms and conditions and there may be restrictions on disposals. The market for these investments is illiquid and there is no active market. We use a combination of cost, internal models, reported values from co-investors/managers and observable inputs, such as capital raises and capital transactions between new and existing shareholders to calculate the fair value of the privately held equity investments. The fair value estimates of our investments in privately held equities are based on unobservable market data and, as a result, have been categorized as Level 3.

Other investments, at fair value
We have ongoing due diligence processes with respect to the other investments carried at fair value in which we invest and their managers. These processes are designed to assist us in assessing the quality of information provided by, or on behalf of, each fund and in determining whether such information continues to be reliable or whether further review is warranted. Certain funds do not provide full transparency of their underlying holdings; however, we obtain the audited financial statements for funds annually, and regularly review and discuss the fund performance with the fund managers to corroborate the reasonableness of the reported net asset values ("NAV").
The use of NAV as an estimate of the fair value for investments in certain entities that calculate NAV is a permitted practical expedient. Due to the time lag in the NAV reported by certain fund managers we adjust the valuation for capital calls and distributions. Other investments measured at fair value using NAV as a practical expedient have not been classified in the fair value hierarchy. Other investments for which we do not use NAV as a practical expedient have been valued using prices from independent pricing services, investment managers and broker-dealers.
The following describes the techniques generally used to determine the fair value of our other investments.
For our investments in hedge funds, we measure fair value by obtaining the most recently available NAV as advised by the external fund manager or third-party administrator. The fair values of these investments are measured using the NAV as a practical expedient and therefore have not been categorized within the fair value hierarchy.
Our investments in fixed income funds and equity funds are valued based on a combination of prices from independent pricing services, external fund managers or third-party administrators. For the publicly available prices we have classified the investments as Level 2. For the non-publicly available prices we are using NAV as a practical expedient and therefore these have not been categorized within the fair value hierarchy.
For our investments in private equity funds, we measure fair value by obtaining the most recently available NAV from the external fund manager or third-party administrator. The fair values of these investments are measured using the NAV as a practical expedient and therefore have not been categorized within the fair value hierarchy.
We measure the fair value of our direct investment in CLO equities based on valuations provided by independent pricing services, our external CLO equity manager, and valuations provided by the broker or lead underwriter of the investment (the "broker"). The fair values measured using prices provided by independent pricing services have been classified as Level 2 and fair values using prices from brokers have been classified as Level 3 due to the use of unobservable inputs in the valuation and the limited number of
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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
relevant trades in secondary markets.
For our investments in the CLO equity funds, we measure fair value by obtaining the most recently available NAV as advised by the external fund manager or third party administrator. The fair value of these investments is measured using the NAV as a practical expedient and therefore have not been categorized within the fair value hierarchy.
For our investments in private credit funds, we measure fair value by obtaining the most recently available NAV from the external fund manager or third-party administrator. The fair values of these investments are measured using the NAV as a practical expedient and therefore have not been categorized within the fair value hierarchy.
Included within other is an investment in a real estate debt fund, for which we measure fair value by obtaining the most recently available NAV from the external fund manager or third-party administrator. The fair value of this investment is measured using the NAV as a practical expedient and therefore has not been categorized within the fair value hierarchy.

Cash and Cash Equivalents
Cash equivalents are short-term, highly liquid investments that are readily convertible to known amounts of cash and are so near their maturity that they present insignificant risk of changes in value due to changes in interest rates. Included within cash and cash equivalents are money market funds, fixed interest deposits and highly liquid fixed maturity investments purchased with an original maturity of three months or less.
The majority of our cash and cash equivalents included within the fair value hierarchy are comprised of money market and liquid reserve funds which have been categorized as Level 1. Fixed interest deposits and highly liquid fixed maturity investments with an original maturity of three months or less have been categorized as Level 2. Operating cash balances are not subject to the recurring fair value measurement guidance and are therefore excluded from the fair value hierarchy.

Insurance Contracts - Fair Value Option
The Company uses an internal model to calculate the fair value of the liability for losses and loss adjustment expenses and reinsurance balances recoverable on paid and unpaid losses for certain retroactive reinsurance contracts where we have elected the fair value option in our Non-life Run-off segment. The fair value was calculated as the aggregate of discounted cash flows plus a risk margin. The discounted cash flow approach uses (i) estimated nominal cash flows based upon an appropriate payment pattern developed in accordance with standard actuarial techniques and (ii) a discount rate based upon a high quality rated corporate bond plus a credit spread for non-performance risk. The model uses corporate bond rates across the yield curve depending on the estimated timing of the future cash flows and specific to the currency of the risk. The risk margin was calculated using the present value of the cost of capital. The cost of capital approach uses (i) projected capital requirements, (ii) multiplied by the risk cost of capital representing the return required for non-hedgeable risk based upon the weighted average cost of capital less investment income and (iii) discounted using the weighted average cost of capital.

Derivative Instruments
The fair values of our derivative instruments, as described in Note 6 - "Derivatives and Hedging Instruments" are classified as Level 2. The fair values are based upon prices in active markets for identical contracts.
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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
Level 3 Measurements and Changes in Leveling
Transfers into or out of levels are recorded at their fair values as of the end of the reporting period, consistent with the date of determination of fair value.

Investments
The following tables present a reconciliation of the beginning and ending balances for all investments measured at fair value on a recurring basis using Level 3 inputs:
Three Months Ended June 30, 2020
Privately-held EquitiesOther InvestmentsTotal
Beginning fair value$267,012  $314  $267,326  
Purchases34    34  
Sales      
Total realized and unrealized gains3,954    3,954  
Transfer out of Level 3 into Level 2      
Ending fair value$271,000  $314  $271,314  
Three Months Ended June 30, 2019
Fixed maturity investmentsPrivately-held EquitiesOther InvestmentsTotal
CorporateResidential mortgage-backedCommercial mortgage-backedAsset-backed
Beginning fair value$3,172  $  $  $9,050  $228,710  $41,747  $282,679  
Purchases90          11,995  12,085  
Sales(381)     (9)     (390) 
Total realized and unrealized gains (losses)(40)   (145) 2  684  (3,290) (2,789) 
Transfer into Level 3 from Level 22,871  102  1,515  15,049      19,537  
Transfer out of Level 3 into Level 2(706)           (706) 
Ending fair value$5,006  $102  $1,370  $24,092  $229,394  $50,452  $310,416  

Six Months Ended June 30, 2020
Privately-held EquitiesOther InvestmentsTotal
Beginning fair value$265,799  $87,869  $353,668  
Purchases1,392  37,092  38,484  
Sales  (539) (539) 
Total realized and unrealized gains (losses)3,809  (40,368) (36,559) 
Transfer into Level 3 from Level 2      
Transfer out of Level 3 into Level 2  (83,740) (83,740) 
Ending fair value$271,000  $314  $271,314  
Six Months Ended June 30, 2019
Fixed maturity investmentsPrivately-held EquitiesOther InvestmentsTotal
CorporateResidential mortgage-backedCommercial mortgage-backedAsset-backed
Beginning fair value$37,386  $  $7,389  $9,121  $228,710  $39,367  $321,973  
Purchases90          11,995  12,085  
Sales(3,041)   (608) (330)     (3,979) 
Total realized and unrealized gains (losses)217    (83) 739  684  (910) 647  
Transfer into Level 3 from Level 23,258  102  1,515  21,024      25,899  
Transfer out of Level 3 into Level 2(32,904)   (6,843) (6,462)     (46,209) 
Ending fair value$5,006  $102  $1,370  $24,092  $229,394  $50,452  $310,416  

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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
Net realized and unrealized gains related to Level 3 assets in the tables above are included in net realized and unrealized gains (losses) in our unaudited condensed consolidated statements of earnings.
The securities transferred from Level 2 to Level 3 were transferred due to insufficient market observable inputs for the valuation of the specific assets. The transfers from Level 3 to Level 2 were based upon obtaining market observable information regarding the valuations of the specific assets.

Valuations Techniques and Inputs
The table below presents the quantitative information related to the fair value measurements for our privately held equity investments measured at fair value on a recurring basis using Level 3 inputs:
Quantitative Information about Level 3 Fair Value Measurements
Fair Value as of June 30, 2020Valuation TechniquesUnobservable Input
Range (Average) (1)
(in millions of U.S. dollars)
$245.3  Transactional valueImplied price per share at recent purchase transaction
13.50 - 13.85
$25.7  Cost as approximation of fair valueCost as approximation of fair value
$271.0  
(1) The average represents the arithmetic average of the inputs and is not weighted by the relative fair value.

Insurance Contracts - Fair Value Option

The following table presents a reconciliation of the beginning and ending balances for all insurance contracts measured at fair value on a recurring basis using Level 3 inputs:
Three Months Ended June 30,
20202019
Liability for losses and LAEReinsurance balances recoverableNetLiability for losses and LAEReinsurance balances recoverableNet
Beginning fair value$2,345,543  $653,396  $1,692,147  $2,847,793  $735,257  $2,112,536  
Assumed business(4,975)   (4,975)       
Incurred losses and LAE:
Reduction in estimates of ultimate losses(21,075) (4,951) (16,124) (5,802) 5,191  (10,993) 
Reduction in unallocated LAE(3,299)   (3,299) (4,011)   (4,011) 
Change in fair value175,787  41,744  134,043  54,218  16,256  37,962  
Total incurred losses and LAE151,413  36,793  114,620  44,405  21,447  22,958  
Paid losses(62,279) (22,321) (39,958) (91,753) (9,081) (82,672) 
Effect of exchange rate movements24,837  3,516  21,321  (27,944) (4,319) (23,625) 
Ending fair value$2,454,539  $671,384  $1,783,155  $2,772,501  $743,304  $2,029,197  

Changes in fair value in the table above are included in net incurred losses and LAE in our consolidated statements of earnings.
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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
The following table presents the components of the net change in fair value:
Three Months Ended
June 30,
20202019
Changes in fair value due to changes in:
Duration$3,702  $5,839  
Corporate bond yield130,341  32,123  
Change in fair value$134,043  $37,962  

Six Months Ended
June 30,
20202019
Liability for losses and LAEReinsurance balances recoverable on paid and unpaid lossesNetLiability for losses and LAEReinsurance balances recoverable on paid and unpaid lossesNet
Beginning fair value$2,621,122  $695,518  $1,925,604  $2,874,055  $739,591  $2,134,464  
Incurred losses and LAE:
Reduction in estimates of ultimate losses(35,514) (8,122) (27,392) (12,956) 1,705  (14,661) 
Reduction in unallocated LAE(9,712)   (9,712) (8,352)   (8,352) 
Change in fair value110,983  35,177  75,806  131,679  37,676  94,003  
Total incurred losses and LAE65,757  27,055  38,702  110,371  39,381  70,990  
Paid losses(143,442) (38,435) (105,007) (207,613) (36,323) (171,290) 
Effect of exchange rate movements(88,898) (12,754) (76,144) (4,312) 655  (4,967) 
Ending fair value$2,454,539  $671,384  $1,783,155  $2,772,501  $743,304  $2,029,197  

Changes in fair value in the table above are included in net incurred losses and LAE in our consolidated statements of earnings. The following table presents the components of the net change in fair value:
Six Months Ended
June 30,
20202019
Changes in fair value due to changes in:
Duration$7,850  $14,886  
Corporate bond yield66,249  79,117  
Weighted cost of capital(5,048)   
Risk cost of capital6,755    
Change in fair value$75,806  $94,003  

Below is a summary of the quantitative information regarding the significant observable and unobservable inputs used in the internal model to determine fair value on a recurring basis:
June 30, 2020December 31, 2019
Valuation TechniqueUnobservable (U) and Observable (O) InputsWeighted AverageWeighted Average
Internal modelCorporate bond yield (O)A ratedA rated
Internal modelCredit spread for non-performance risk (U)0.2%0.2%
Internal modelRisk cost of capital (U)5.1%5.1%
Internal modelWeighted average cost of capital (U)8.25%8.5%
Internal modelDuration - liability (U)7.92 years7.82 years
Internal modelDuration - reinsurance balances recoverable (U)8.75 years8.68 years
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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

The fair value of the liability for losses and LAE and reinsurance balances recoverable on paid and unpaid losses may increase or decrease due to changes in the corporate bond rate, the credit spread for non-performance risk, the risk cost of capital, the weighted average cost of capital and the estimated payment pattern as described below:
An increase in the corporate bond rate or credit spread for non-performance risk would result in a decrease in the fair value of the liability for losses and LAE and reinsurance balances recoverable on paid and unpaid losses. Conversely, a decrease in the corporate bond rate or credit spread for non-performance risk would result in an increase in the fair value of the liability for losses and LAE and reinsurance balances recoverable on paid and unpaid losses.
An increase in the weighted average cost of capital would result in an increase in the fair value of the liability for losses and LAE and reinsurance balances recoverable on paid and unpaid losses. Conversely, a decrease in the weighted average cost of capital would result in a decrease in the fair value of the liability for losses and LAE and reinsurance balances recoverable on paid and unpaid losses.
An increase in the risk cost of capital would result in an increase in the fair value of the liability for losses and LAE and reinsurance balances recoverable on paid and unpaid losses. Conversely, a decrease in the risk cost of capital would result in a decrease in the fair value of the liability for losses and LAE and reinsurance balances recoverable on paid and unpaid losses.
The duration of the liability and recoverable is adjusted every period to reflect actual net payments during the period and expected future payments. An acceleration of the estimated payment pattern, a decrease in duration, would result in an increase in the fair value of the liability for losses and LAE and reinsurance balances recoverable on paid and unpaid losses. Conversely, a deceleration of the estimated payment pattern, an increase in duration, would result in a decrease in the fair value of the liability for losses and LAE and reinsurance balances recoverable on paid and unpaid losses.
In addition, the estimate of the capital required to support the liabilities is based upon current industry standards for capital adequacy. If the required capital per unit of risk increases, then the fair value of the liability for losses and LAE and reinsurance balances recoverable on paid and unpaid losses would increase. Conversely, a decrease in required capital would result in a decrease in the fair value of the liability for losses and LAE and reinsurance balances recoverable on paid and unpaid losses.

Disclosure of Fair Values for Financial Instruments Carried at Cost
Senior Notes
As of June 30, 2020, our 4.50% Senior Notes due 2022 (the "2022 Senior Notes") and our 4.95% Senior Notes due 2029 (the "2029 Senior Notes" and, together with the 2022 Senior Notes, the "Senior Notes") were carried at amortized cost of $348.9 million and $493.9 million, respectively, while the fair value based on observable market pricing from a third party pricing service was $355.0 million and $526.1 million, respectively. The Senior Notes are classified as Level 2.
Insurance Contracts
Disclosure of fair value of amounts relating to insurance contracts is not required, except those for which we elected the fair value option, as described above.
Remaining Assets and Liabilities
Our remaining assets and liabilities were generally carried at cost or amortized cost, which due to their short-term nature approximates fair value as of June 30, 2020 and December 31, 2019.
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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
12. PREMIUMS WRITTEN AND EARNED
The following table provides a summary of premiums written and earned by segment and for our other activities:
Three Months Ended June 30,Six Months Ended June 30,
 2020201920202019
 Premiums
Written
Premiums
Earned
Premiums
Written
Premiums
Earned
Premiums
Written
Premiums
Earned
Premiums
Written
Premiums
Earned
Non-life Run-off
Gross$(2,155) $14,395  $(4,209) $55,551  $(1,828) $32,473  $(25,086) $139,517  
Ceded(1,048) (3,878) 800  (7,081) 801  (5,926) 2,499  (14,373) 
Net$(3,203) $10,517  $(3,409) $48,470  $(1,027) $26,547  $(22,587) $125,144  
Atrium
Gross$48,631  $48,152  $43,788  $41,884  $106,468  $95,985  $97,773  $85,270  
Ceded(7,739) (4,765) (6,826) (3,685) (16,878) (10,228) (14,312) (8,318) 
Net$40,892  $43,387  $36,962  $38,199  $89,590  $85,757  $83,461  $76,952  
StarStone
Gross$86,087  $112,288  $108,902  $114,462  $241,569  $238,825  $252,766  $257,240  
Ceded(9,165) (29,452) (5,495) (16,140) (57,841) (58,375) (37,703) (28,996) 
Net$76,922  $82,836  $103,407  $98,322  $183,728  $180,450  $215,063  $228,244  
Other
Gross$6,829  $6,795  $460  $6,013  $2,944  $9,468  $1,324  $12,686  
Ceded(664) (664) 1  (42)     (18) (117) 
Net$6,165  $6,131  $461  $5,971  $2,944  $9,468  $1,306  $12,569  
Total
Gross$139,392  $181,630  $148,941  $217,910  $349,153  $376,751  $326,777  $494,713  
Ceded(18,616) (38,759) (11,520) (26,948) (73,918) (74,529) (49,534) (51,804) 
Total$120,776  $142,871  $137,421  $190,962  $275,235  $302,222  $277,243  $442,909  

Gross premiums written for the three months ended June 30, 2020 and 2019 were $139.4 million and $148.9 million, respectively, a decrease of $9.5 million. The decrease was primarily due to a decrease in gross premiums written in our StarStone segment of $22.8 million, partially offset by increases in our Atrium and Non-life Run-off segments of $4.8 million and $2.1 million, respectively. The decrease in the StarStone segment was primarily due to underwriting restrictions put in place as a result of the COVID-19 pandemic, a policy cancellation as a result of the StarStone International Run-Off and our strategy to exit certain lines of business. The increase in the Atrium segment was driven by new opportunities to write new business and an increase in rates, partially offset by the impact of COVID-19 and underwriting actions to not renew certain contracts in the current period.
Gross premiums written for the six months ended June 30, 2020 and 2019 were $349.2 million and $326.8 million, respectively, an increase of $22.4 million. The increase was primarily due to a reduction in negative gross premiums written in our Non-life Run-off segment of $23.3 million and an increase in gross premiums written in our Atrium segment of $8.7 million, partially offset by a decrease in gross premiums written in our StarStone segment of $11.2 million. The negative gross premium written in the Non-life Run-off segment for the six months ended June 30, 2019 was due to premium adjustments on the acquired unearned premium primarily related to the run-off business assumed as a result of the AmTrust RITC transactions and the acquisition of Maiden Re North America. The increase in the Atrium segment was driven by new opportunities to write new business and an increase in rates, partially offset by the impact of COVID-19 and underwriting actions to not renew certain contracts in the current period. The decrease in the StarStone segment was driven primarily by underwriting restrictions put in place as a result of COVID-19 and our strategy to exit certain lines of business, partially off set by new business and rate improvements in certain lines.

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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
13. GOODWILL AND INTANGIBLE ASSETS
The following table presents a reconciliation of the beginning and ending goodwill and intangible assets for the six months ended June 30, 2020:
Intangible assets
GoodwillIntangible
assets with
a definite life
Intangible 
assets 
with an indefinite life
TotalTotal
Balance as of December 31, 2019109,807  14,630  67,131  81,761  191,568  
Impairment losses (StarStone International)(8,000)   (4,000) (4,000) (12,000) 
Amortization—  (1,016) —  (1,016) (1,016) 
Balance as of June 30, 2020
$101,807  $13,614  $63,131  $76,745  $178,552  
Goodwill
The changes in the goodwill by segment was as follows for the six months ended June 30, 2020:
Non-life
Run-Off
AtriumStarStoneTotal
Balance as of December 31, 2019:
$62,959  $38,848  $8,000  $109,807  
Impairment losses (StarStone International)    (8,000) (8,000) 
Balance as of June 30, 2020:
Goodwill62,959  38,848  8,000  109,807  
Accumulated impairment losses    (8,000) (8,000) 
$62,959  $38,848  $  $101,807  
On June 10, 2020, we announced the StarStone International Run-Off. During the three and six months ended June 30, 2020, we recognized a full impairment loss of $8.0 million related to the goodwill allocated to StarStone International.

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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
Intangible Assets
The gross carrying value, accumulated amortization and net carrying value of intangible assets by segment and by type as of June 30, 2020 and December 31, 2019 was as follows:
 June 30, 2020December 31, 2019
 Gross
carrying
value
Accumulated amortization Net
carrying
value
Gross
carrying
value
Accumulated amortization Net
carrying
value
Atrium segment:
Intangible assets with a definite life:
Distribution channel$20,000  $(8,777) $11,223  $20,000  $(8,111) $11,889  
Brand7,000  (4,609) 2,391  7,000  (4,259) 2,741  
Intangible assets with an indefinite life:
Lloyd’s syndicate capacity33,031  —  33,031  33,031  —  33,031  
Management contract30,100  —  30,100  30,100  —  30,100  
Total Atrium segment intangible assets$90,131  $(13,386) $76,745  $90,131  $(12,370) $77,761  
StarStone segment:
Intangible assets with an indefinite life:
Lloyd’s syndicate capacity4,000  (4,000)   4,000    4,000  
Total intangible assets$94,131  $(17,386) $76,745  $94,131  $(12,370) $81,761  

Atrium
The definite-lived assets are amortized on a straight-line basis over a period ranging from ten to fifteen years. The following table presents the amortization recorded on the intangible assets:
Three Months Ended June 30,Six Months Ended June 30,
2020201920202019
Intangible asset amortization
$508  $565  $1,016  $1,130  
The estimated future amortization expense related to Atrium's intangible assets is as follows:
YearTotal
2020$1,017  
20212,033  
20222,033  
20231,975  
20241,333  
2025 and thereafter5,223  
Total future estimated amortization expense$13,614  

StarStone
During the three and six months ended June 30, 2020, we recognized a full impairment loss of $4.0 million on StarStone's Lloyd's syndicate capacity following our decision to place StarStone International into run-off.
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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
14. DEBT OBLIGATIONS AND CREDIT FACILITIES
We primarily utilize debt facilities for funding acquisitions and for significant new business, investment activities and, from time to time, for general corporate purposes. Our debt obligations were as follows:
FacilityOrigination DateTermJune 30, 2020December 31, 2019
4.50% Senior Notes due 2022
March 10, 20175 years$348,886  $348,616  
4.95% Senior Notes due 2029
May 28, 201910 years493,893  493,600  
Total Senior Notes842,779  842,216  
EGL Revolving Credit FacilityAugust 16, 20185 years350,000    
2018 EGL Term Loan Facility December 27, 20183 years349,243  348,991  
Total debt obligations$1,542,022  $1,191,207  
During the six months ended June 30, 2020, we utilized $364.0 million and repaid $14.0 million under our facilities. The facilities were utilized for funding significant new business as described in Note 3 - "Significant New Business" and providing additional liquidity to the Company to maximize financial flexibility following the recent disruption in global financial markets associated with the COVID-19 pandemic.
The table below provides a summary of the total interest expense:
Three Months Ended June 30,Six Months Ended June 30,
2020201920202019
Interest expense on debt obligations$13,675  $12,754  $26,870  $23,207  
Amortization of debt issuance costs343  282  563  555  
Funds withheld balances and other      310  
Total interest expense$14,018  $13,036  $27,433  $24,072  
Senior Notes
4.50% Senior Notes due 2022
On March 10, 2017, we issued the 2022 Senior Notes for an aggregate principal amount of $350.0 million. The 2022 Senior Notes pay 4.5% interest semi-annually and mature on March 10, 2022. The 2022 Senior Notes are unsecured and unsubordinated obligations that rank equal to any of our other unsecured and unsubordinated obligations, senior to any future obligations that are expressly subordinated to the 2022 Senior Notes, effectively subordinate to any of our secured indebtedness to the extent of the value of the assets securing such indebtedness, and structurally subordinate to all liabilities of our subsidiaries.
The 2022 Senior Notes are rated BBB- and are redeemable at our option on a make whole basis at any time prior to the date that is one month prior to the maturity of the 2022 Senior Notes. On or after the date that is one month prior to the maturity of the 2022 Senior Notes, the notes are redeemable at a redemption price equal to 100% of the principal amount of the 2022 Senior Notes to be redeemed.
We incurred costs of $2.9 million in issuing the 2022 Senior Notes. These costs included underwriters’ fees, legal and accounting fees, and other fees, and are capitalized and presented as a direct deduction from the principal amount of debt obligations in the consolidated balance sheets. These costs are amortized over the term of the 2022 Senior Notes and are included in interest expense in our consolidated statements of earnings. The unamortized costs as of June 30, 2020 and December 31, 2019 were $1.1 million and $1.4 million, respectively.
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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
4.95% Senior Notes due 2029
On May 28, 2019, we issued the 2029 Senior Notes for an aggregate principal amount of $500.0 million. The 2029 Senior Notes pay 4.95% interest semi-annually and mature on June 1, 2029. The 2029 Senior Notes are unsecured and unsubordinated obligations that rank equal to any of our other unsecured and unsubordinated obligations, senior to any future obligations that are expressly subordinated to the 2029 Senior Notes, effectively subordinate to any of our secured indebtedness to the extent of the value of the assets securing such indebtedness, and contractually subordinate to all liabilities of our subsidiaries.
The 2029 Senior Notes are rated BBB- and are redeemable at our option on a make whole basis at any time prior to the date that is three months prior to the maturity of the 2029 Senior Notes. On or after the date that is three months prior to the maturity of the 2029 Senior Notes, the notes are redeemable at a redemption price equal to 100% of the principal amount of the notes to be redeemed.
We incurred costs of $6.8 million in issuing the 2029 Senior Notes. These costs included underwriters’ fees, legal and accounting fees, and other fees, and are capitalized and presented as a direct deduction from the principal amount of debt obligations in the consolidated balance sheets. These costs are amortized over the term of the 2029 Senior Notes and are included in interest expense in our consolidated statements of earnings. The unamortized costs as of June 30, 2020 and December 31, 2019 were $6.1 million and $6.4 million, respectively.

EGL Revolving Credit Facility
On August 16, 2018, we and certain of our subsidiaries, as borrowers and guarantors, entered into a new five-year unsecured $600.0 million revolving credit agreement. The revolving credit agreement expires in August 2023 and we have the option to increase the commitments under the facility by up to an aggregate amount of $400.0 million from the existing lenders, or through the addition of new lenders subject to the terms of the agreement. Borrowings under the facility will bear interest at a rate based on the Company's long term senior unsecured debt ratings.
As of June 30, 2020, we were permitted to borrow up to an aggregate of $600.0 million under the facility. As of June 30, 2020, there was $250.0 million of available unutilized capacity under the facility. Subsequent to June 30, 2020, we have neither borrowed nor repaid any additional amounts under the facility, as such the unutilized capacity remains at $250.0 million.
Interest is payable at least every month at either the alternate base rate ("ABR") or LIBOR plus a margin as set forth in the revolving credit agreement. The margin could vary based upon any change in our long term senior unsecured debt rating assigned by Standard & Poor's ("S&P") or Fitch. We also pay a commitment fee based on the average daily unutilized portion of the facility. If an event of default occurs, the interest rate may increase and the agent may, and at the request of the required lenders shall, cancel lender commitments and demand early repayment.

2018 EGL Term Loan Facility
On December 27, 2018, we entered into and fully utilized a three-year $500.0 million unsecured term loan (the "2018 EGL Term Loan Facility"). The proceeds were partially used to fund the acquisition of Maiden Re North America. We have the option to increase the principal amount of the term loan credit facility up to an aggregate amount of $150.0 million from the existing lenders or through the addition of new lenders, subject to the terms of the term loan credit agreement. During 2019, we repaid $150.0 million of principal on the facility, bringing the outstanding loan amount to $349.2 million, which includes unamortized issuance costs of $0.8 million, as of June 30, 2020.
Interest is payable at least every three months at either ABR or LIBOR plus a margin set forth in the term loan credit agreement. The margin could vary based upon any change in our long term senior unsecured debt rating assigned by S&P or Fitch. During the existence of an event of default, the interest rate may increase and the agent may, and at the request of the required lenders shall, demand early repayment.
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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
We incurred costs of $1.5 million associated with closing the 2018 EGL Term Loan Facility. These costs included bank, legal and accounting fees, and other fees, and are capitalized and presented as a direct deduction from the principal amount of debt obligations in the consolidated balance sheets. These costs are amortized over the term of the facility and are included in general and administrative expenses in our consolidated statements of earnings. The unamortized costs as of June 30, 2020 and December 31, 2019 were $0.8 million and $1.0 million, respectively.
Refer to Note 15 - "Debt Obligations and Credit Facilities" to the consolidated financial statements contained in our Annual Report on Form 10-K for the year ended December 31, 2019 for further information on the terms of the above facilities.

Letters of Credit
We utilize unsecured and secured letters of credit to support certain of our insurance and reinsurance performance obligations.
Funds at Lloyd's
We have an unsecured letter of credit agreement for Funds at Lloyd's ("FAL Facility") to issue up to $375.0 million of letters of credit, with provision to increase the facility by an additional $25.0 million up to an aggregate amount of $400.0 million, subject to lenders approval. On November 6, 2019, we amended and restated the FAL Facility to extend its term by one year. The FAL Facility is available to satisfy our Funds at Lloyd's requirements and expires in 2023. As of June 30, 2020 and December 31, 2019, our combined Funds at Lloyd's were comprised of cash and investments of $574.1 million and $639.3 million, respectively, and unsecured letters of credit of $252.0 million as of both dates.
$120.0 million Letter of Credit Facility
We use this facility to support certain reinsurance collateral obligations of our subsidiaries. On December 6, 2019, we reduced the facility size from $170.0 million to $120.0 million. Pursuant to the facility agreement, we have the option to increase commitments under the facility by an additional $60.0 million. As of both June 30, 2020 and December 31, 2019, we had issued an aggregate amount of letters of credit under this facility of $115.3 million.
$800.0 million Syndicated Letter of Credit Facility
During 2019, we entered into an unsecured $760.0 million letter of credit facility agreement, most recently amended on June 3, 2020. On August 4, 2020, we exercised our option to increase the commitments available under the facility by an aggregate amount of $40.0 million, bringing the total size of the facility to $800.0 million. The facility is used to post letters of credit to collateralize reinsurance performance obligations to various parties, including $447.4 million relating to the reinsurance transaction with Maiden Reinsurance Ltd. ("Maiden Re Bermuda"). As of June 30, 2020 and December 31, 2019, we had issued an aggregate amount of letters of credit under this facility of $594.1 million and $608.0 million, respectively.
$65.0 million Letter of Credit Facility
On August 4, 2020, we entered into a $65.0 million secured letter of credit facility agreement pursuant to which we issued a letter of credit in the amount of approximately $61.0 million to collateralize a portion of our reinsurance performance obligations relating to our novation transaction with Hannover Re, which we completed on August 6, 2020, as discussed in Note 3 - "Significant New Business".

15. NONCONTROLLING INTERESTS
We have both redeemable noncontrolling interest ("RNCI") and noncontrolling interest ("NCI") on our consolidated balance sheets. RNCI with redemption features that are not solely within our control are classified within temporary equity in the consolidated balance sheets and carried at redemption value, which is fair value. The change in fair value is recognized through retained earnings as if the balance sheet date were also the redemption date. In addition, we also have NCI, which does not have redemption features and is classified within equity in the consolidated balance sheets.

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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
Redeemable Noncontrolling Interest
RNCI as of June 30, 2020 and December 31, 2019 comprised the ownership interests held by the Trident V Funds ("Trident") (39.3%) and Dowling Capital Partners, L.P. ("Dowling") (1.7%) in our subsidiary North Bay Holdings Limited ("North Bay"). North Bay owns our investments in Atrium and StarStone.
The following is a reconciliation of the beginning and ending carrying amount of the equity attributable to the RNCI: 
Three Months EndedSix Months Ended
June 30,June 30,
2020201920202019
Balance at beginning of period$392,773  $456,346  $438,791  $458,543  
Dividends paid  (11,556)   (11,556) 
Net losses attributable to RNCI(20,140) (2,917) (52,099) (5,461) 
Accumulated other comprehensive earnings attributable to RNCI10,543  70  6,373  155  
Foreign currency translation adjustments(165)   (165)   
Change in redemption value of RNCI(16,478) (6,247) (26,628) (5,985) 
Cumulative effect of change in accounting principle attributable to RNCI (1)
    261    
Balance at end of period$366,533  $435,696  $366,533  $435,696  
(1) The Company adopted ASU 2016-13 and the related amendments on January 1, 2020. Refer to Note 1 - "Significant Accounting Policies" for further details.

We carried the RNCI at its estimated redemption value, which is fair value, as of June 30, 2020 and December 31, 2019. The decrease was attributable to $52.1 million of net losses primarily related to StarStone during the six months ended June 30, 2020 resulting from exit costs associated with the decision to place StarStone International into run-off; and $26.6 million due to change in redemption value. The redemption value decreased as a result of the StarStone International Run-Off decision and the agreement to sell StarStone U.S.
Refer to Note 20 - "Related Party Transactions" and Note 21 - "Commitments and Contingencies" for additional information regarding RNCI.

Noncontrolling Interest
As of June 30, 2020 and December 31, 2019, we had $13.6 million and $14.2 million, respectively, of NCI related to external interests in three of our subsidiaries. A reconciliation of the beginning and ending carrying amount of the equity attributable to NCI is included in the unaudited condensed consolidated statement of changes in shareholders equity.
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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
16. SHARE CAPITAL
Refer to Note 17 - "Share Capital" to our consolidated financial statements contained in our Annual Report on Form 10-K for the year ended December 31, 2019 for additional information on our share capital.
Dividends Declared and Paid
The following table details the dividends that have been declared and paid on our Series D and E Preferred Shares for the period from January 1, 2020 to August 10, 2020:
Dividend per:
Preferred Share SeriesDate DeclaredRecord DateDate Paid or PayablePreferred ShareDepositary ShareTotal dividends paid in the six months ended June 30, 2020
(in U.S. dollars)(in thousands of U.S. dollars)
Series DFebruary 4, 2020February 15, 2020March 2, 2020$437.50  $0.43750  $7,000  
Series EFebruary 4, 2020February 15, 2020March 2, 2020$437.50  $0.43750  1,925  
Series DMay 5, 2020May 15, 2020June 1, 2020$437.50  $0.43750  7,000  
Series EMay 5, 2020May 15, 2020June 1, 2020$437.50  $0.43750  1,925  
Series DAugust 5, 2020August 15, 2020September 1, 2020$437.50  $0.43750    
Series EAugust 5, 2020August 15, 2020September 1, 2020$437.50  $0.43750    
$17,850  
Share Repurchases
On March 9, 2020, our Board of Directors adopted a stock trading plan for the purpose of repurchasing a limited number of our Company’s ordinary shares, not to exceed $150.0 million in aggregate (the "Repurchase Program"). On March 23, 2020, we suspended our Repurchase Program due to uncertainty in the global financial markets resulting from the COVID-19 pandemic. From inception to March 23, 2020, we repurchased 92,510 ordinary shares for an aggregate price of $12.5 million under the Repurchase Program. The average price paid per share repurchased was $135.40.
Joint Share Ownership Plan
On January 21, 2020, 565,630 Voting Ordinary Shares were issued to the trustee of the Enstar Group Limited Employee Benefit Trust (the "EB Trust"). Voting rights in respect of shares held in the EB Trust have been contractually waived. We have consolidated the EB Trust, and shares held in the EB Trust are classified like treasury shares as contra-equity in our consolidated balance sheet.
The EB Trust supports awards made under our Joint Share Ownership Plan, a sub-plan to our Amended and Restated 2016 Equity Incentive Plan (the "JSOP"). An award of 565,630 shares was made to our Chief Executive Officer on January 21, 2020, which cliff-vests after 3 years from grant. The accounting for stock-settled JSOP awards is similar to options, whereby the grant date fair value of $13.6 million is expensed over the life of the award. To determine the grant date fair value of $24.13 per share, we utilized a Monte-Carlo valuation model with the following assumptions: (i) volatility of 18.66%; (ii) dividend yield of 0.00%; and (iii) risk-free interest rate of 1.55%. For further information on the EB Trust and JSOP award, including the vesting conditions, refer to Note 17 - "Share Capital" and Note 19 - "Share-Based Compensation and Pensions" to our consolidated financial statements contained in our Annual Report on Form 10-K for the year ended December 31, 2019.

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NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
17. EARNINGS PER SHARE
The following table sets forth the computation of basic and diluted net earnings per ordinary share:
Three Months EndedSix Months Ended
June 30,June 30,
2020201920202019
Numerator:
Earnings (losses) attributable to Enstar ordinary shareholders:
Net earnings from continuing operations$799,232  $234,168  $283,632  $588,160  
Net earnings (loss) from discontinued operations (3)
(679) (2,326) (1,900) 2,433  
Net earnings attributable to Enstar ordinary shareholders:$798,553  $231,842  $281,732  $590,593  
Denominator:
Weighted-average ordinary shares outstanding — basic (1)
21,565,240  21,477,772  21,557,542  21,470,675  
Effect of dilutive securities:
Share-based compensation plans (2)
185,300  138,464177,264  131,798
Warrants38,70259,21553,52559,296
Weighted-average ordinary shares outstanding — diluted21,789,242  21,675,451  21,788,331  21,661,769  
Earnings (loss) per ordinary share attributable to Enstar:
Basic:
Net earnings from continuing operations$37.06  $10.90  $13.16  $27.40  
Net earnings (loss) from discontinued operations(0.03) (0.11) (0.09) 0.11  
Net earnings per ordinary share$37.03  $10.79  $13.07  $27.51  
Diluted:
Net earnings from continuing operations$36.68  $10.81  $13.02  $27.15  
Net earnings (loss) from discontinued operations(0.03) (0.11) (0.09) 0.11  
Net earnings per ordinary share$36.65  $10.70  $12.93  $27.26  

(1) Weighted-average ordinary shares for basic earnings per share includes ordinary shares (voting and non-voting) but excludes ordinary shares held in the EB Trust in respect of JSOP awards.
(2) Share-based dilutive securities include restricted shares, restricted share units, and performance share units. Certain share-based compensation awards, including the ordinary shares held in the EB Trust in respect of JSOP awards, were excluded from the calculation for the three and six months ended June 30, 2020 because they were anti-dilutive.
(3) Net earnings (loss) from discontinued operations attributable to Enstar ordinary shareholders equals net earnings (loss) from discontinued operations, net of income taxes, plus net loss (earnings) from discontinued operations attributable to noncontrolling interest; refer to Note 4 - "Divestitures, Held-for-Sale Businesses and Discontinued Operations" for a breakdown by period.




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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
18. SHARE-BASED COMPENSATION
We provide various employee benefits including share-based compensation, an employee share purchase plan and an annual incentive compensation program. These are described in Note 19 - "Share-Based Compensation and Pensions" to our consolidated financial statements contained in our Annual Report on Form 10-K for the year ended December 31, 2019.
The table below provides a summary of the compensation costs for all of our share-based compensation plans:
Three Months Ended June 30,Six Months Ended June 30,
2020201920202019
Share-based compensation plans:
Restricted shares and restricted share units$2,330  $1,289  $3,929  $3,132  
Performance share units5,855  11,130  5,188  12,455  
Cash-settled stock appreciation rights(316) (267) (3,475) (211) 
Joint share ownership plan expense1,133    2,005    
Other share-based compensation plans:
Northshore incentive plan(25) 986  447  2,032  
StarStone incentive plan    (223)   
Deferred compensation and ordinary share plan for non-employee directors93  49  959  876  
Employee share purchase plan104  104  208  207  
Total share-based compensation$9,174  $13,291  $9,038  $18,491  

19. INCOME TAXATION

Interim Tax Calculation Method
We use the estimated annual effective tax rate method for computing our interim tax provision. This method applies our best estimate of the effective tax rate expected for the full year to our year-to-date earnings before income taxes. We provide for income tax expense or benefit based upon our pre-tax earnings and the provisions of currently enacted tax laws. Certain items deemed to be unusual, infrequent or not reliably estimated are excluded from the estimated annual effective tax rate. In the event such items are identified, the actual tax expense or benefit is reported in the same period as the related item. Certain other items are not included in the estimated annual effective tax rate, such as changes in the assessment of valuation allowance on deferred tax assets and uncertain tax positions, if any.

Interim Tax Expense
The effective tax rates on income for the three months ended June 30, 2020 and 2019 were 2.1% and 3.1%, respectively. The effective tax rates on income for the six months ended June 30, 2020 and 2019 were 4.4% and 2.0%, respectively. The effective tax rate on income differs from the statutory rate of 0% due to tax on foreign operations, primarily the U.S. and the U.K.
We have foreign operating subsidiaries and branch operations principally located in the U.S., U.K., Continental Europe and Australia that are subject to federal, foreign, state and local taxes in those jurisdictions. Deferred tax liabilities have not been accrued with respect to the undistributed earnings of our foreign subsidiaries. If the earnings were to be distributed, as dividends or other distributions, withholding taxes may be imposed by the jurisdiction of the paying subsidiary. For our U.S. subsidiaries, we have not currently accrued any withholding taxes with respect to unremitted earnings as management has indefinitely reinvested these earnings. For our U.K. subsidiaries, there are no withholding taxes imposed. For our other foreign subsidiaries, it would not be practicable to compute such amounts due to a variety of factors, including the amount, timing, and manner of any repatriation. Because we operate in many jurisdictions, our net earnings are subject to risk due to changing tax laws and tax rates around the world. The current, rapidly changing economic environment may increase the likelihood of substantial changes to tax laws in the jurisdictions in which we operate.
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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Assessment of Valuation Allowance on Deferred Tax Assets
We have estimated the future taxable income of our foreign subsidiaries and have provided a valuation allowance in respect of loss carryforwards where we do not expect to realize a benefit. We have considered all available evidence using a "more likely than not" standard in determining the amount of the valuation allowance. During the three and six months ended June 30, 2020, we have maintained a valuation allowance for deferred tax assets which management does not believe meet the "more likely than not" criteria.

Unrecognized Tax Benefits
There were no unrecognized tax benefits as of June 30, 2020 and December 31, 2019.

Tax Examinations
Our operating subsidiaries may be subject to audit by various tax authorities and may have different statutes of limitations expiration dates. With limited exceptions, our major subsidiaries that operate in the U.S., U.K. and Australia are no longer subject to tax examinations for years before 2015.

20. RELATED PARTY TRANSACTIONS

Stone Point Capital LLC

Through several private transactions occurring from May 2012 to July 2012 and an additional private transaction that closed in May 2018, investment funds managed by Stone Point Capital LLC ("Stone Point") have acquired an aggregate of 1,635,986 of our Voting Ordinary Shares (which constitutes approximately 8.8% of our outstanding Voting Ordinary Shares). On November 6, 2013, we appointed James D. Carey to our Board of Directors. Mr. Carey is the sole member of an entity that is one of four general partners of the entities serving as general partners for Trident, is a member of the investment committees of such general partners, and is a member and senior principal of Stone Point, the manager of the Trident funds.
In addition, we have entered into certain agreements with Trident with respect to Trident’s co-investments in the Atrium, Arden, and StarStone acquisitions. These include investors’ agreements and shareholders’ agreements (most recently amended on June 14, 2020), which provide for, among other things: (i) our right to redeem Trident’s equity interest in the Atrium/Arden and StarStone transactions in cash at fair market value at any time following March 31, 2023 (the "Call Right"); and (ii) Trident’s right to have its equity co-investment interests in the Atrium/Arden and StarStone transactions redeemed by us at fair market value (which we may satisfy in either cash or our ordinary shares) following December 31, 2022 (the "Put Right").
Following the consummation of the StarStone U.S. transaction described in Note 4 – “Divestitures, Held-for-Sale Businesses and Discontinued Operations” (the “Sale Transaction”): (a) we will have the right to exercise the Call Right separately with respect to (1) Trident’s interests in North Bay, (2) Trident’s indirect interest in North Bay’s equity interest in the StarStone U.S. business received in the Sale Transaction (the “StarStone U.S. Equity Interest”) and (3) Trident’s indirect interest in the business included in the StarStone International Run-off; and (b) Trident will have the right to exercise its Put Right separately with respect to (1) its interest in North Bay, (2) its indirect interest in the StarStone U.S. Equity Interest, and (3) its indirect interest in the business included in the StarStone International Runoff.
However, if neither the Sale Transaction nor a proposed future reorganization of North Bay (the “Reorganization” and, together with the Sale Transaction, the “Transactions”) are consumed by April 1, 2021, the date associated with the Call Right and the Put Right would instead be April 1, 2021 and clauses (a)(2), (a)(3), (b)(2) and (b)(3) above would no longer apply. If the Sale Transaction is consummated, but a Reorganization transaction is not agreed and consummated by (x) December 31, 2020, then, any time after that date, Trident will have the right to require us to purchase its indirect interest in the StarStone U.S. Equity Interest or (y) April 1, 2021, then, any time after that date, we will have the right to purchase Trident’s indirect interest in the StarStone U.S. Equity Interest.
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Pursuant to the terms of the shareholders’ agreements, Mr. Carey serves as a Trident representative on the boards of the holding companies, including North Bay, established in connection with the Atrium/Arden and StarStone co-investment transactions. Trident also has a second representative on these boards who is a Stone Point employee.
We, in partnership with StarStone's other shareholders, have recently completed two transactions to provide capital support to StarStone in the form of:
(i) a contribution to its contributed surplus account and a loss portfolio transfer, effective October 1, 2018. To fund the transaction, the North Bay shareholders contributed an aggregate amount of $135.0 million to North Bay in proportion to their ownership interests. Trident’s proportionate contribution of $53.1 million was temporarily funded by North Bay and was reimbursed in the first quarter of 2019; and
(ii) a loss portfolio transfer, effective April 1, 2019, for which shareholders agreed to contribute an aggregate amount of $48.0 million.
In addition, Enstar has separately entered into a loss portfolio transfer and adverse development cover with StarStone effective October 1, 2019, whereby StarStone transferred $189.4 million in loss reserves and unearned premium to a wholly-owned Enstar subsidiary in exchange for premium of $189.4 million. Enstar also provided an additional $59.0 million adverse development cover in excess of the $189.4 million.
The RNCI on our balance sheet relating to these Trident co-investment transactions was as follows:
June 30, 2020December 31, 2019
Redeemable Noncontrolling Interest$351,253  $420,499  

As of June 30, 2020, we had the following additional relationships with Stone Point and its affiliates:
Investments in funds (carried within other investments) managed by Stone Point, with respect to which we recognized net unrealized gains (losses);
Investments in registered investment companies affiliated with entities owned by Trident or otherwise affiliated with Stone Point, with respect to which we recognized net unrealized gains (losses) and interest income;
Separate accounts managed by Eagle Point Credit Management, PRIMA Capital Advisors and SKY Harbor Capital Management, which are affiliates of entities owned by Trident, with respect to which we incurred management fees;
Investments in funds (carried within other investments) managed by Sound Point Capital, an entity in which Mr. Carey has an indirect minority ownership interest and serves as a director, with respect to which we recognized net unrealized gains (losses);
Sound Point Capital has acted as collateral manager for certain of our direct investments in CLO debt and equity securities, with respect to which we recognized net unrealized gains (losses) and interest income;
Marble Point Capital, which is an affiliate of an entity owned by Trident, has acted as collateral manager for certain of our direct investments in CLO debt and equity securities, with respect to which we recognized net unrealized gains (losses) and interest income;
A separate account managed by Sound Point Capital, with respect to which we incurred management fees in prior periods;
In the fourth quarter of 2018, we invested $25.0 million in Mitchell TopCo Holdings, the parent company of Mitchell International and Genex Services, as a co-investor alongside certain Trident funds; and
In the second quarter of 2020, we invested $10.0 million in a 2.5 year senior secured unrated floating rate term loan facility formed and managed by Sound Point Capital. The facility's borrower, Amplify U.S. Inc., is a subsidiary of Evergreen (as defined below) and has used the proceeds to purchase AmTrust preferred stock. The facility ranks senior to all other claims of the borrower, the purchased preferred stock and cash flows therefrom serve as collateral, and AmTrust has provided an unsecured guarantee for the facility. For further information on our relationships with Evergreen and AmTrust, refer to the AmTrust section below.

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The following table presents the amounts included in our consolidated balance sheet related to our related party transactions with Stone Point and its affiliated entities:
June 30, 2020December 31, 2019
Short-term investments, AFS, at fair value$1,598  $1,431  
Fixed maturities, trading, at fair value207,570  269,131  
Fixed maturities, AFS, at fair value209,803  160,303  
Equities, at fair value89,069  121,794  
Other investments, at fair value:
Hedge funds17,925  18,993  
Fixed income funds325,482  381,449  
Private equity funds28,335  34,858  
CLO equities30,126  32,560  
CLO equity funds123,299  87,509  
Private Debt15,815  16,312  
Real estate fund21,586  18,106  
Cash and cash equivalents 11,472  54,080  
Other assets10,574  10  
Other liabilities1,193  4,710  

The following table presents the amounts included in net earnings related to our related party transactions with Stone Point and its affiliated entities:
Three Months Ended June 30,Six Months Ended June 30,
2020201920202019
Net investment income$4,793  $1,563  $8,877  $2,752  
Net realized and unrealized (losses) gains29,729  9,564  (72,787) 29,747  
Total net (losses) earnings$34,522  $11,127  $(63,910) $32,499  


Hillhouse Capital

Investment funds managed by Hillhouse Capital (defined below) collectively own approximately 9.4% of Enstar’s voting ordinary shares. These funds also own non-voting ordinary shares and warrants to purchase additional non-voting ordinary shares, which together with their voting ordinary shares, represent an approximate 16.5% economic interest in Enstar. In February 2017, Jie Liu, a Partner of AnglePoint (defined below), was appointed to our Board.

We have made direct investments in in funds (the “Hillhouse Funds”) managed by Hillhouse Capital Management, Ltd. and Hillhouse Capital Advisors, Ltd. (together, “Hillhouse Capital”) and AnglePoint Asset Management Ltd. ("AnglePoint"). As of June 30, 2020, our carrying value of our direct investment the InRe Fund, L.P. (the "InRe Fund"), which is managed by AnglePoint, was $1.5 billion with the InRe Fund's assets being invested in approximately 22% in fixed income securities, 16% in North American equities, 54% in international equities and 8% in financing, derivatives and other items.
As of June 30, 2020 and December 31, 2019 our equity method investee, Enhanzed Reinsurance Ltd. ("Enhanzed Re"), had investments in a fund managed by AnglePoint, as set forth in the table below.

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Our consolidated balance sheet included the following balances related to transactions with Hillhouse Capital and AnglePoint (as applicable):
June 30, 2020December 31, 2019
Investments in funds managed by AnglePoint, held by Enhanzed Re$522,207  $327,799  
Our ownership of equity method investments47.4 %47.4 %
Our share of Investments in funds managed by AnglePoint held by Enhanzed Re (through our ownership of equity method investments)$247,526  $155,377  
Investment in other funds managed by Hillhouse Capital and AnglePoint:
InRe Fund$1,534,329  $918,633  
Other funds268,353  232,968  
$1,802,682  $1,151,601  

The increase in the investment in the Hillhouse Funds was primarily due to additional subscriptions of $300.0 million and unrealized gains for the six months ended June 30, 2020. We incurred management and performance fees of approximately $131.7 million, included within the Hillhouse Funds' reported NAV, for the six months ended June 30, 2020 in relation to the investment in funds managed by Hillhouse Capital and AnglePoint as described above.

Monument

Monument Insurance Group Limited ("Monument") was established in October 2016 and Enstar has invested a total of $59.6 million in the common and preferred shares of Monument as at June 30, 2020 (December 31, 2019: $26.6 million) for an interest of approximately 26.6% (December 31, 2019: 26.6%). In connection with our investment in Monument, we entered into a Shareholders Agreement with the other shareholders. We have accounted for our equity interest in Monument as an equity method investment as we have significant influence over its operating and financial policies.
On May 31, 2019, we completed the transfer of our remaining life assurance policies written by our wholly-owned subsidiary Alpha Insurance SA to a subsidiary of Monument. In this transaction, we transferred policy benefits for life and annuity contracts with a carrying value of €88.8 million (or approximately $99.1 million) and total assets with a fair value of €91.1 million (or approximately $101.6 million) to a subsidiary of Monument.

Our investment in the common and preferred shares of Monument, which is included in equity method investments on our consolidated balance sheet, was as follows:
June 30, 2020December 31, 2019
Investment in Monument$92,117  $60,598  

During the three and six months ended June 30, 2020 we received director fees from Monument of $0.1 million in connection with one of our representatives serving on Monument's board of directors.

Clear Spring (formerly SeaBright)

Effective January 1, 2017, we sold SeaBright Insurance Company (“SeaBright Insurance”) and its licenses to Delaware Life Insurance Company ("Delaware Life"), a subsidiary of Guggenheim Partners, LLC. Following the sale, SeaBright Insurance was renamed Clear Spring Property and Casualty Company (“Clear Spring”). Clear Spring was subsequently capitalized with $56.0 million of equity, with Enstar retaining a 20% indirect equity interest in Clear Spring.
We have accounted for our equity interest in Clear Spring as an equity method investment as we have
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significant influence over its operating and financial policies.
Our investment in the common shares of Clear Spring which is included in equity method investments on our consolidated balance sheet, was as follows:
June 30, 2020December 31, 2019
Investment in Clear Spring$10,402  $10,645  

Effective January 1, 2017, StarStone National Insurance Company (“StarStone National”) entered into a ceding quota share treaty with Clear Spring pursuant to which Clear Spring reinsures 33.3% of core workers' compensation business written by StarStone National. This agreement was terminated as of December 31, 2018.
Effective January 1, 2017, we also entered into an assuming quota share treaty with Clear Spring pursuant to which an Enstar subsidiary reinsures 25% of all workers' compensation business written by Clear Spring. This is recorded as other activities.

Our consolidated balance sheet included the following balances between us and Clear Spring:
June 30, 2020December 31, 2019
Balances under StarStone ceding quota share included, in assets or liabilities held for sale:
Reinsurance balances recoverable$21,523  $22,812  
Prepaid insurance premiums  51  
Ceded payable3,593  3,616  
Ceded acquisition costs  21  
Balances under assuming quota share:
Losses and LAE4,455  6,135  
Unearned reinsurance premiums  13  
Funds held7,807  8,611  
Our consolidated statement of earnings included the following amounts between us and Clear Spring:
Three Months EndedSix Months Ended
June 30,June 30,
2020201920202019
Transactions under StarStone ceding quota share, included in net earnings (loss) from discontinued operations:
Ceded premium earned$682  $(4,271) $1  $(9,756) 
Ceded incurred losses and LAE(2,043) 3,129  (1,289) 6,988  
Ceded acquisition costs(99) 8  (27) 62  
Transactions under assuming quota share:
Premium earned(170) 1,068    2,439  
Net incurred losses and LAE510  (472) 882  (1,437) 
Acquisition costs20  23  7  9  
Total net earnings (loss)$(1,100) $(515) $(426) $(1,695) 

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AmTrust
In November 2018, pursuant to a Subscription Agreement with Evergreen Parent L.P. ("Evergreen"), K-Z Evergreen, LLC and Trident Pine Acquisition LP ("Trident Pine"), we purchased equity in Evergreen in the aggregate amount of $200.0 million. Evergreen is an entity formed by private equity funds managed by Stone Point and the Karfunkel-Zyskind family that acquired the approximately 45% of the issued and outstanding shares of common stock of AmTrust that the Karfunkel-Zyskind Family and certain of its affiliates and related parties did not already own or control. The equity interest was in the form of three separate classes of equity securities issued at the same price and in the same proportion as the equity interest purchased by Trident Pine. In a second transaction in December 2019, Enstar acquired an additional $25.9 million of Evergreen securities from another investor.
Following the closing of the second transaction, Enstar owns approximately 8.5% of the equity interest in Evergreen and Trident Pine owns approximately 21.8%. Evergreen owns all of the equity interest in AmTrust. In addition, upon the successful closing of the transaction we received a fee of $3.3 million, half of which was payable upon closing and the other on the first anniversary of the closing. The fee was recorded in full in other income within our consolidated statements of earnings for the year ended December 31, 2018.

Our indirect investment in the shares of AmTrust, carried in equities on our consolidated balance sheet was as follows:
June 30, 2020December 31, 2019
Investment in AmTrust$245,316  $240,115  

The following table presents the amounts included in net earnings related to our related party transactions with AmTrust:
Three Months Ended June 30,Six Months Ended June 30,
2020201920202019
Net investment income$1,896  $1,829  $4,367  $3,650  
Net realized and unrealized gains3,954    3,809    
Total net earnings$5,850  $1,829  $8,176  $3,650  


Citco

In June 2018, we made a $50.0 million indirect investment in the shares of Citco III Limited ("Citco"), a fund administrator with global operations. Pursuant to an investment agreement and in consideration for participation therein, a related party of Hillhouse Capital provided us with investment support. In a private transaction that preceded our co-investment opportunity, certain Citco shareholders, including Trident, agreed to sell all or a portion of their interests in Citco. As of June 30, 2020, Trident owned an approximate 3.4% interest in Citco. Mr. Carey currently serves as an observer to the board of directors of Citco in connection with Trident's investment therein.
Our indirect investment in the shares of Citco, which is included in equity method investments on our consolidated balance sheet, was as follows:
June 30, 2020December 31, 2019
Investment in Citco$51,815  $51,742  

Enhanzed Re

Enhanzed Re is a joint venture between Enstar, Allianz SE ("Allianz") and Hillhouse Capital that was capitalized in December 2018. Enhanzed Re is a Bermuda-based Class 4 and Class E reinsurer and will reinsure life, non-life run-off, and property and casualty insurance business, initially sourced from Allianz and Enstar. Enstar, Allianz and Hillhouse Capital affiliates have made equity investment commitments in aggregate of $470.0 million to Enhanzed Re. Enstar owns 47.4% of the entity, Allianz owns 24.9% and an affiliate of Hillhouse Capital owns
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27.7%. As of June 30, 2020, Enstar contributed $154.1 million of its total capital commitment to Enhanzed Re and had an uncalled amount of $68.7 million. We have accounted for our equity interest in Enhanzed Re as an equity method investment as we have significant influence over its operating and financial policies.
Enstar acts as the (re)insurance manager for Enhanzed Re, for which it receives fee income recorded within other income, AnglePoint acts as the primary investment manager, and an affiliate of Allianz provides investment management services. Enhanzed Re writes business from affiliates of its operating sponsors, Allianz SE and Enstar. It also underwrites other business to maximize diversification by risk and geography.
Our investment in the common shares of Enhanzed Re, which is included in equity method investments on our consolidated balance sheet, was as follows:
June 30, 2020December 31, 2019
Investment in Enhanzed Re$188,868  $182,856  

We have ceded 10% of the Zurich transaction, as discussed in Note 4 - "Significant New Business" to the consolidated financial statements contained in our Annual Report on Form 10-K for the year ended December 31, 2019, to Enhanzed Re on the same terms and conditions as those received by Enstar.

Our consolidated balance sheet included the following balances between us and Enhanzed Re:
June 30, 2020December 31, 2019
Balances under ceding quota share:
Insurance balances payables$1,738  $1,443  
Reinsurance balances recoverable55,547  59,601  
Funds held48,730  50,089  
Other assets328  1,033  

Our consolidated statement of earnings included the following amounts between us and Enhanzed Re:
Three Months Ended June 30,Six Months Ended June 30,
2020201920202019
Amounts under ceding quota share:
Net incurred losses and LAE(13)   (13)   
Acquisition costs    $23    
Other income/expense(3,172) 166  (2,881) 252  
Total net earnings$(3,185) $166  $(2,871) $252  

21. COMMITMENTS AND CONTINGENCIES

Concentration of Credit Risk
We believe that there are no significant concentrations of credit risk associated with our cash and cash equivalents, fixed maturity investments, or other investments. Our cash and investments are managed pursuant to guidelines that follow prudent standards of diversification and liquidity, and limit the allowable holdings of a single issue and issuers. We are also subject to custodial credit risk on our investments, which we manage by diversifying our holdings amongst large financial institutions that are highly regulated.
We have exposure to credit risk on certain of our assets pledged to ceding companies under insurance contracts. In addition, we are potentially exposed should any insurance intermediaries be unable to fulfill their contractual obligations with respect to payments of balances owed to and by us.
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Credit risk exists in relation to insurance and reinsurance balances recoverable on paid and unpaid losses. We remain liable to the extent that counterparties do not meet their contractual obligations and, therefore, we evaluate and monitor concentration of credit risk among our insurers and reinsurers.
We are also subject to credit risk in relation to funds held by reinsured companies. Under funds held arrangements, the reinsured company has retained funds that would otherwise have been remitted to our reinsurance subsidiaries. The funds may be placed into trust or subject to other security arrangements. However, we generally have the contractual ability to offset any shortfall in the payment of the funds held balances with amounts owed by us. As of June 30, 2020, we had a significant funds held concentration of $965.5 million to one reinsured company which has financial strength credit ratings of A+ from A.M. Best and AA from S&P.
We limit the amount of credit exposure to any one counterparty, and none of our counterparty credit exposures, excluding U.S. government instruments and the counterparty noted above, exceeded 10% of shareholders’ equity as of June 30, 2020. Our credit exposure to the U.S. government was $905.9 million as of June 30, 2020.

Legal Proceedings
We are, from time to time, involved in various legal proceedings in the ordinary course of business, including litigation and arbitration regarding claims. Estimated losses relating to claims arising in the ordinary course of business, including the anticipated outcome of any pending arbitration or litigation, are included in the liability for losses and LAE in our consolidated balance sheets. In addition to claims litigation, we may be subject to other lawsuits and regulatory actions in the normal course of business, which may involve, among other things, allegations of underwriting errors or omissions, employment claims or regulatory activity. We do not believe that the resolution of any currently pending legal proceedings, either individually or taken as a whole, will have a material effect on our business, results of operations or financial condition. We anticipate that, similar to the rest of the insurance and reinsurance industry, we will continue to be subject to litigation and arbitration proceedings in the ordinary course of business, including litigation generally related to the scope of coverage with respect to asbestos and environmental and other claims.

Unfunded Investment Commitments
As of June 30, 2020, we had unfunded commitments of $544.7 million and $76.5 million to private equity funds and equity method investments, respectively.

Guarantees
As of June 30, 2020 and December 31, 2019, parental guarantees and capital instruments supporting subsidiaries' insurance obligations were $1.3 billion and $1.0 billion, respectively. We also guarantee the FAL facility, which is described in Note 14 - "Debt Obligations and Credit Facilities."
In connection with the sale of StarStone U.S., the net loss reserves of StarStone U.S. will be reinsured to an Enstar Non-life Run-off entity upon completion of the sale which is expected to occur in the second half of 2020. The obligations under the loss portfolio transfer reinsurance agreement will be guaranteed by Enstar. Refer to Note 4 - "Divestitures, Held-for-Sale Businesses and Discontinued Operations" for further details.

Redeemable Noncontrolling Interest
We have the right to purchase the RNCI interests from the RNCI holders at certain times in the future (each such right, a "call right") and the RNCI holders have the right to sell their RNCI interests to us at certain times in the future (each such right, a "put right"). The RNCI rights held by Trident are described in Note 20 - "Related Party Transactions." Dowling has a right to participate if Trident exercises its put right.

Leases
Our leases are all currently classified as operating leases whereby the related lease expense is recognized within general and administrative expenses in our consolidated statements of earnings on a straight-line basis over the term of the lease. We also recognize a right-of-use asset and an offsetting lease liability within other assets and other liabilities, respectively, in our consolidated balance sheets, for each operating lease that we enter into.
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Our leases are primarily related to office space and facilities used to conduct business operations and have remaining lease terms of one year to 37 years; some of which include options to extend the lease term for up to five years, and some of which include options to terminate the lease within one year. Our lease agreements do not contain any material residual value guarantees or material restrictive covenants.
Since a majority of our leases do not provide an implicit discount rate, we use our collateralized incremental borrowing rate based on the information available at the commencement date of the lease in determining the present value of lease payments. For more information on our leasing arrangements and the related accounting, refer to Note 23 - "Commitments and Contingencies" to the consolidated financial statements contained in our Annual Report on Form 10-K for the year ended December 31, 2019.
The table below provides the lease cost and other information relating to our operating leases:
Three Months Ended June 30,Six Months Ended June 30,
2020201920202019
Lease cost
Operating lease cost$3,202  $3,199  $6,524  $6,686  
Short-term lease cost(1)
61    119    
Total lease cost3,263  3,199  6,643  6,686  
Sub-lease income(2)
(138) (137) (276) (268) 
Total net lease cost$3,125  $3,062  $6,367  $6,418  
Other information
Operating Cash paid for amounts included in the measurement of lease liabilities$4,145  $3,169  $7,328  $6,193  
Non-cash activity: right-of-use assets relating to leases191  619  263  52,228  
Weighted-average remaining lease term6.2 years6.6 years
Weighted-average discount rate6.3 %6.2 %
(1) Leases with an initial lease term of twelve months or less are not recognized within our consolidated balance sheets.
(2) Sub-lease income consists of rental income received from third parties to whom we have sub-leased some of our leased office spaces and is included within other income in our consolidated statements of earnings.

The table below provides a summary of the operating leases recorded on our consolidated balance sheets:
Balance sheet classificationJune 30, 2020December 31, 2019
Right-of-use assets (1)
Other assets$36,613  $46,747  
Current lease liabilitiesOther liabilities8,836  11,403  
Non-current lease liabilitiesOther liabilities29,629  34,785  
(1) Following our decision to put the StarStone International operations into orderly run-off effective June 10, 2020, we recorded total impairment charges of $3.5 million on the right-of-use assets relating to certain StarStone International operating leases as of June 30, 2020.
The table below provides a summary of the contractual maturities of our operating lease liabilities:
June 30, 2020
2020$5,923  
20219,684  
20227,931  
20236,877  
20245,151  
2025 and beyond12,195  
Total lease payments (1)
47,761  
Less: Imputed interest(9,296) 
Present value of lease liabilities$38,465  
(1) Amount excludes short-term leases.
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22. SEGMENT INFORMATION
We have three reportable segments of business that are each managed, operated and separately reported: (i) Non-life Run-off; (ii) Atrium; and (iii) StarStone. Our other activities, which do not qualify as a reportable segment, include our corporate expenses, debt servicing costs, holding company income and expenses, foreign exchange and other miscellaneous items. These segments are described in Note 1 - "Description of Business" to our consolidated financial statements contained in our Annual Report on Form 10-K for the year ended December 31, 2019.
The following tables set forth selected and unaudited condensed consolidated statement of earnings results by segment and for our other activities:
Three Months Ended June 30, 2020
Non-life
Run-off
AtriumStarStoneOtherTotal
Gross premiums written$(2,155) $48,631  $86,087  $6,829  $139,392  
Net premiums written$(3,203) $40,892  $76,922  $6,165  $120,776  
Net premiums earned$10,517  $43,387  $82,836  $6,131  $142,871  
Net incurred losses and LAE(91,474) (15,592) (74,433) (5,193) (186,692) 
Acquisition costs(3,589) (14,609) (30,749) (120) (49,067) 
Operating expenses(48,562) (2,872) (26,476)   (77,910) 
Underwriting income (loss)(133,108) 10,314  (48,822) 818  (170,798) 
Net investment income (loss)89,056  1,079  7,101  (2,793) 94,443  
Net realized and unrealized gains 926,494  7,567  33,547    967,608  
Fees and commission income 3,966  6,044      10,010  
Other income (expense)(2,231) (2) 32  1,114  (1,087) 
Corporate expenses(17,400) (5,272) (35,442) (8,806) (66,920) 
Interest income (expense)(16,181)   (654) 2,817  (14,018) 
Net foreign exchange gains (losses)(4,605) 973  (4,167) 2,641  (5,158) 
EARNINGS (LOSS) BEFORE INCOME TAXES845,991  20,703  (48,405) (4,209) 814,080  
Income tax expense(11,812) (1,536) (3,304)   (16,652) 
Loss from equity method investments(8,790)       (8,790) 
NET EARNINGS (LOSS) FROM CONTINUING OPERATIONS825,389  19,167  (51,709) (4,209) 788,638  
NET LOSS FROM DISCONTINUED OPERATIONS, NET OF INCOME TAX EXPENSE    (1,152)   (1,152) 
NET EARNINGS (LOSS)825,389  19,167  (52,861) (4,209) 787,486  
Net loss (earnings) attributable to noncontrolling interest936  (7,896) 26,952    19,992  
NET EARNINGS (LOSS) ATTRIBUTABLE TO ENSTAR826,325  11,271  (25,909) (4,209) 807,478  
Dividends on preferred shares      (8,925) (8,925) 
NET EARNINGS (LOSS) ATTRIBUTABLE TO ENSTAR ORDINARY SHAREHOLDERS$826,325  $11,271  $(25,909) $(13,134) $798,553  
Underwriting ratios:
Loss ratio
35.9 %89.9 %
Acquisition expense ratio33.7 %37.1 %
Operating expense ratio6.6 %31.9 %
Combined ratio76.2 %158.9 %
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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
Three Months Ended June 30, 2019
Non-life
Run-off
AtriumStarStoneOtherTotal
Gross premiums written$(4,209) $43,788  $108,902  $460  $148,941  
Net premiums written$(3,409) $36,962  $103,407  $461  $137,421  
Net premiums earned$48,470  $38,199  $98,322  $5,971  $190,962  
Net incurred losses and LAE(9,752) (13,048) (119,289) (4,465) (146,554) 
Life and annuity policy benefits      (2,194) (2,194) 
Acquisition costs(16,512) (12,815) (21,609) (145) (51,081) 
Operating expenses(44,208) (3,193) (16,509)   (63,910) 
Underwriting income (loss)(22,002) 9,143  (59,085) (833) (72,777) 
Net investment income (loss)65,857  2,053  8,807  (2,446) 74,271  
Net realized and unrealized gains 241,542  1,969  12,613  4,545  260,669  
Fees and commission income (expense)4,645  1,533  (161)   6,017  
Other income9,917  35  314  759  11,025  
Corporate expenses(18,734) (3,502)   (14,530) (36,766) 
Interest income (expense)(15,619)     2,583  (13,036) 
Net foreign exchange gains (losses)3,752  98  (1,244) (27) 2,579  
EARNINGS (LOSS) BEFORE INCOME TAXES269,358  11,329  (38,756) (9,949) 231,982  
Income tax benefit (expense)(7,399) (1,023) 724    (7,698) 
Earnings from equity method investments18,119    (406)   17,713  
NET EARNINGS (LOSS) FROM CONTINUING OPERATIONS280,078  10,306  (38,438) (9,949) 241,997  
NET LOSS FROM DISCONTINUED OPERATIONS, NET OF INCOME TAX EXPENSE    (3,943)   (3,943) 
NET EARNINGS (LOSS)280,078  10,306  (42,381) (9,949) 238,054  
Net loss (earnings) attributable to noncontrolling interest(2,266) (4,227) 9,206    2,713  
NET EARNINGS (LOSS) ATTRIBUTABLE TO ENSTAR277,812  6,079  (33,175) (9,949) 240,767  
Dividend on preferred shares      (8,925) (8,925) 
NET EARNINGS (LOSS) ATTRIBUTABLE TO ENSTAR ORDINARY SHAREHOLDERS$277,812  $6,079  $(33,175) $(18,874) $231,842  
Underwriting ratios:
Loss ratio34.2 %121.3 %
Acquisition expense ratio33.5 %22.0 %
Operating expense ratio8.4 %16.8 %
Combined ratio76.1 %160.1 %
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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
Six Months Ended June 30, 2020
Non-Life
Run-Off
AtriumStarStoneOtherTotal
Gross premiums written$(1,828) $106,468  $241,569  $2,944  $349,153  
Net premiums written$(1,027) $89,590  $183,728  $2,944  $275,235  
Net premiums earned$26,547  $85,757  $180,450  $9,468  $302,222  
Net incurred losses and LAE(29,440) (44,008) (148,869) (7,675) (229,992) 
Acquisition costs(10,496) (28,993) (55,418) (203) (95,110) 
Operating expenses(96,772) (5,749) (45,945)   (148,466) 
Underwriting income (loss)(110,161) 7,007  (69,782) 1,590  (171,346) 
Net investment income (loss)156,507  2,604  15,327  (5,281) 169,157  
Net realized and unrealized gains (losses)351,812  1,859  (15,124)   338,547  
Fees and commission income 8,951  8,587      17,538  
Other income (expense)20,064  33  117  (857) 19,357  
Corporate expenses(25,520) (8,410) (36,016) (24,846) (94,792) 
Interest income (expense)(32,080)   (1,101) 5,748  (27,433) 
Net foreign exchange gains (losses)10,048  (1,160) (4,748) 2,641  6,781  
EARNINGS (LOSS) BEFORE INCOME TAXES379,621  10,520  (111,327) (21,005) 257,809  
Income tax expense(9,005) (783) (1,592)   (11,380) 
Earnings from equity method investments3,660        3,660  
NET EARNINGS (LOSS) FROM CONTINUING OPERATIONS374,276  9,737  (112,919) (21,005) 250,089  
NET LOSS FROM DISCONTINUED OPERATIONS, NET OF INCOME TAX EXPENSE    (3,221)   (3,221) 
NET EARNINGS (LOSS)374,276  9,737  (116,140) (21,005) 246,868  
Net loss (earnings) attributable to noncontrolling interest3,023  (4,028) 53,719    52,714  
NET EARNINGS (LOSS) ATTRIBUTABLE TO ENSTAR377,299  5,709  (62,421) (21,005) 299,582  
Dividends on preferred shares      (17,850) (17,850) 
NET EARNINGS (LOSS) ATTRIBUTABLE TO ENSTAR ORDINARY SHAREHOLDERS$377,299  $5,709  $(62,421) $(38,855) $281,732  
Underwriting ratios:
Loss ratio 51.3 %82.5 %
Acquisition expense ratio33.8 %30.7 %
Operating expense ratio6.7 %25.5 %
Combined ratio91.8 %138.7 %
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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
Six Months Ended June 30, 2019
Non-Life
Run-Off
AtriumStarStoneOtherTotal
Gross premiums written$(25,086) $97,773  $252,766  $1,324  $326,777  
Net premiums written$(22,587) $83,461  $215,063  $1,306  $277,243  
Net premiums earned$125,144  $76,952  $228,244  $12,569  $442,909  
Net incurred losses and LAE(104,934) (30,262) (258,236) (9,421) (402,853) 
Life and annuity policy benefits      (2,290) (2,290) 
Acquisition costs(44,667) (26,557) (57,281) (377) (128,882) 
Operating expenses(88,200) (6,226) (38,692)   (133,118) 
Underwriting income (loss)(112,657) 13,907  (125,965) 481  (224,234) 
Net investment income (loss)132,585  3,764  17,704  (4,131) 149,922  
Net realized and unrealized gains 677,728  4,882  25,240  5,579  713,429  
Fees and commission income (expense)9,477  3,382  (365)   12,494  
Other income15,421  71  373  971  16,836  
Corporate expenses(35,304) (7,290)   (23,227) (65,821) 
Interest income (expense)(27,735)   (475) 4,138  (24,072) 
Net foreign exchange gains (losses)7,370  923  (1,835) (26) 6,432  
EARNINGS (LOSS) BEFORE INCOME TAXES666,885  19,639  (85,323) (16,215) 584,986  
Income tax benefit (expense)(10,119) (1,708) 112  (85) (11,800) 
Earnings (loss) from equity method investments26,703    (218)   26,485  
NET EARNINGS (LOSS) FROM CONTINUING OPERATIONS683,469  17,931  (85,429) (16,300) 599,671  
NET EARNINGS FROM DISCONTINUED OPERATIONS, NET OF INCOME TAX EXPENSE    4,125    4,125  
NET EARNINGS (LOSS)683,469  17,931  (81,304) (16,300) 603,796  
Net loss (earnings) attributable to noncontrolling interest(4,912) (7,355) 17,128    4,861  
NET EARNINGS (LOSS) ATTRIBUTABLE TO ENSTAR678,557  10,576  (64,176) (16,300) 608,657  
Dividends on preferred shares      (18,064) (18,064) 
NET EARNINGS (LOSS) ATTRIBUTABLE TO ENSTAR ORDINARY SHAREHOLDERS$678,557  $10,576  $(64,176) $(34,364) $590,593  
Underwriting ratios:
Loss ratio39.3 %113.1 %
Acquisition expense ratio34.5 %25.1 %
Operating expense ratio8.1 %17.0 %
Combined ratio81.9 %155.2 %
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ENSTAR GROUP LIMITED
NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
Assets by Segment
Invested assets are managed on a subsidiary basis, and investment income and realized and unrealized gains (losses) on investments are recognized in each segment as earned. Our total assets by segment and for our other activities were as follows:
June 30, 2020December 31, 2019
Assets by Segment:
Non-life Run-off$17,154,632  $15,775,407  
Atrium608,038  580,405  
StarStone4,108,324  3,985,138  
Other(577,079) (514,851) 
Total assets$21,293,915  $19,826,099  
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ITEM 2.  MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
The following discussion and analysis of our financial condition as of June 30, 2020 and our results of operations for the three and six months ended June 30, 2020 and 2019 should be read in conjunction with our unaudited condensed consolidated financial statements and the related notes included elsewhere in this quarterly report and the audited consolidated financial statements and notes thereto contained in our Annual Report on Form 10-K for the year ended December 31, 2019. Some of the information contained in this discussion and analysis or included elsewhere in this quarterly report, including information with respect to our plans and strategy for our business, includes forward-looking statements that involve risks, uncertainties and assumptions. Our actual results and the timing of events could differ materially from those anticipated by these forward-looking statements as a result of many factors, including those discussed under "Cautionary Statement Regarding Forward-Looking Statements" and "Risk Factors" included in this Quarterly Report on Form 10-Q and in Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2019.
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Business Overview
We are a multi-faceted insurance group that offers innovative capital release solutions and specialty underwriting capabilities through our network of group companies in Bermuda, the United States, the United Kingdom, Continental Europe, Australia, and other international locations. Our core focus is acquiring and managing insurance and reinsurance companies and portfolios of insurance and reinsurance business in run-off. Since the formation of our Bermuda-based holding company in 2001, we have completed or announced over 100 acquisitions or portfolio transfers. The substantial majority of our acquisitions have been in the Non-life Run-off business, which generally includes property and casualty, workers’ compensation, asbestos and environmental, construction defect, marine, aviation and transit, and other closed business.
We manage our investment portfolio with the goal of achieving superior risk-adjusted returns, while growing profitability and generating long-term growth in shareholder value.
While our core focus remains acquiring and managing non-life run-off business, we own 59.0% interests in the Atrium and StarStone groups of companies, with the Trident V Funds ("Trident") owning 39.3% interests, and Dowling Capital Partners, L.P. ("Dowling") owning 1.7% interests. On June 10, 2020, we announced an agreement to sell StarStone US Holdings, Inc. and its subsidiaries ("StarStone U.S.") to a newly formed company, Core Specialty Insurance Holdings, Inc. ("Core Specialty"), in which we will retain a minority interest. In connection with the sale, a new management team and Board will be appointed for StarStone U.S. and the net loss reserves of StarStone U.S. will be reinsured to an Enstar Non-life Run-off entity upon completion of the sale. On June 10, 2020, we also announced that we are placing the StarStone non-U.S. international operations ("StarStone International") into an orderly run-off (the "StarStone International Run-Off"). For further information, refer to Note 4 - "Divestitures, Held-for-Sale Businesses and Discontinued Operations" to our unaudited condensed consolidated financial
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statements included within Item 1 of this Quarterly Report on Form 10-Q and the "StarStone Segment" section below.
Our business strategies are discussed in "Item 1. Business - Company Overview", "- Business Strategy", "-Strategic Growth" and "- Recent Acquisitions and Significant New Business" in our Annual Report on Form 10-K for the year ended December 31, 2019.

Key Performance Indicator
Our primary corporate objective is growing our book value per share, and we believe that long-term growth in fully diluted book value per share is the most appropriate measure of our financial performance. We create growth in our book value through the execution of the strategies discussed in "Item 1. Business - Business Strategy" in our Annual Report on Form 10-K for the year ended December 31, 2019.
During the six months ended June 30, 2020, our book value per ordinary share on a fully diluted basis increased by 7.6% to $213.06 per ordinary share. The increase was primarily due to the net earnings for the six months ended June 30, 2020, which was primarily the result of net unrealized investment gains, partially offset by exit costs associated with the StarStone International Run-Off, as discussed more fully below. Also contributing to the increase was a reduction in the redemption value of RNCI.
The table below summarizes the calculation of our fully diluted book value per ordinary share:
June 30, 2020December 31, 2019Change
(expressed in thousands of U.S. dollars, except share and per share data)
Numerator:
Total Enstar Shareholder's Equity$5,186,913  $4,842,183  $344,730  
Less: Series D and E Preferred Shares510,000  510,000  —  
Total Enstar Ordinary Shareholders' Equity (A)4,676,913  4,332,183  344,730  
Proceeds from assumed conversion of warrants(1)
20,229  20,229  —  
Numerator for fully diluted book value per ordinary share calculations (B)$4,697,142  $4,352,412  $344,730  
Denominator:
Ordinary shares outstanding (C) (2)
21,578,769  21,511,505  67,264  
Effect of dilutive securities:
Share-based compensation plans (3)
291,121302,565(11,444) 
Warrants(1)
175,901175,901—  
Fully diluted ordinary shares outstanding (D)22,045,791  21,989,971  55,820  
Book value per ordinary share:
Basic book value per ordinary share = (A) / (C)$216.74  $201.39  $15.35  
Fully diluted book value per ordinary share = (B) / (D)$213.06  $197.93  $15.13  
(1) There are warrants outstanding to acquire 175,901 Series C Non-Voting Ordinary Shares for an exercise price of $115.00 per share, subject to certain adjustments (the "Warrants"). The Warrants were issued in April 2011 and expire in April 2021. The Warrant holder may, at its election, satisfy the exercise price of the Warrants on a cashless basis by surrender of shares otherwise issuable upon exercise of the Warrants in accordance with a formula set forth in the Warrants.
(2) Ordinary shares outstanding includes voting and non-voting shares but excludes ordinary shares held in the Enstar Group Limited Employee Benefit Trust (the "EB Trust") in respect of awards made under our Joint Share Ownership Plan, a sub-plan to our Amended and Restated 2016 Equity Incentive Plan (the "JSOP").
(3) Share-based dilutive securities include restricted shares, restricted share units, and performance share units ("PSUs"). The amounts for PSUs and ordinary shares held in the EB trust in respect of the JSOP are adjusted at the end of each period end to reflect the latest estimated performance multipliers for the respective awards. The JSOP shares did not have a dilutive effect as at June 30, 2020.

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Non-GAAP Financial Measure
In addition to presenting net earnings (loss) attributable to Enstar ordinary shareholders and diluted earnings (loss) per ordinary share determined in accordance with U.S. GAAP, we believe that presenting non-GAAP operating income (loss) attributable to Enstar ordinary shareholders and non-GAAP diluted operating income (loss) per ordinary share provides investors with valuable measures of our performance.
Non-GAAP operating income (loss) attributable to Enstar ordinary shareholders is calculated by the addition or subtraction of certain items from within our consolidated statements of earnings to or from net earnings (loss) attributable to Enstar ordinary shareholders, the most directly comparable GAAP financial measure, as illustrated in the table below:
Three Months EndedSix Months Ended
June 30,June 30,
2020201920202019
(expressed in thousands of U.S. dollars, except share and per share data)
Net earnings attributable to Enstar ordinary shareholders$798,553  $231,842  $281,732  $590,593  
Adjustments:
Net realized and unrealized (gains) on fixed maturity investments and funds held - directly managed (1)
(417,364) (185,819) (139,803) (423,750) 
Change in fair value of insurance contracts for which we have elected the fair value option134,043  37,962  75,806  94,003  
Net (earnings) loss from discontinued operations1,152  3,943  3,221  (4,125) 
Tax effects of adjustments (2)
39,264  18,676  13,299  38,799  
Adjustments attributable to noncontrolling interest (3)
11,994  3,082  (4,417) 12,897  
Non-GAAP operating income attributable to Enstar ordinary shareholders (4)
$567,642  $109,686  $229,838  $308,417  
Diluted net earnings per ordinary share$36.65  $10.70  $12.93  $27.26  
Adjustments:
Net realized and unrealized (gains) on fixed maturity investments and funds held - directly managed (1)
(19.15) (8.57) (6.42) (19.56) 
Change in fair value of insurance contracts for which we have elected the fair value option6.15  1.75  3.48  4.34  
Net (earnings) loss from discontinued operations0.05  0.18  0.15  (0.19) 
Tax effects of adjustments (2)
1.80  0.86  0.61  1.79  
Adjustments attributable to noncontrolling interest (3)
0.55  0.14  (0.20) 0.60  
Diluted non-GAAP operating income per ordinary share (4)
$26.05  $5.06  $10.55  $14.24  
Weighted average ordinary shares outstanding:
Basic21,565,240  21,477,772  21,557,542  21,470,675  
Diluted21,789,242  21,675,451  21,788,331  21,661,769  
(1) Represents the net realized and unrealized gains and losses related to fixed maturity securities included in net earnings (loss). Our fixed maturity securities are held directly on our balance sheet and also within the "Funds held - directly managed" balance. Refer to Note 5 - "Investments" to our unaudited condensed consolidated financial statements included within Item 1 of this Quarterly Report on Form 10-Q for further details on our net realized and unrealized gains and losses.
(2) Represents an aggregation of the tax expense or benefit associated with the specific country to which the pre-tax adjustment relates, calculated at the applicable jurisdictional tax rate.
(3) Represents the impact of the adjustments on the net earnings (loss) attributable to noncontrolling interest associated with the specific subsidiaries to which the adjustments relate.
(4) Non-GAAP financial measure.


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Basis of Non-GAAP Operating Income (Loss) Financial Measure
Our non-GAAP measure shown above, as defined in Item 10(e) of Regulation S-K, enables readers of the consolidated financial statements to analyze our results in a way that is more aligned with the manner in which our management measures our underlying performance. We believe that presenting this non-GAAP financial measure, which may be defined and calculated differently by other companies, improves the understanding of our consolidated results of operations. This measure should not be viewed as a substitute for those calculated in accordance with U.S. GAAP.
Non-GAAP operating income (loss) excludes: (i) net realized and unrealized (gains) losses on fixed maturity investments and funds held - directly managed included in net earnings (loss); (ii) change in fair value of insurance contracts for which we have elected the fair value option; (iii) gain (loss) on sale of subsidiaries, if any; (iv) net earnings (loss) from discontinued operations, if any; (v) tax effect of these adjustments, where applicable; and (vi) attribution of share of adjustments to noncontrolling interest, where applicable. We eliminate the impact of net realized and unrealized (gains) losses on fixed maturity investments and funds held - directly managed and change in fair value of insurance contracts for which we have elected the fair value option because these items are subject to significant fluctuations in fair value from period to period, driven primarily by market conditions and general economic conditions, and therefore their impact on our earnings is not reflective of the performance of our core operations. When applicable, we eliminate the impact of gain (loss) on sale of subsidiaries and net earnings (loss) on discontinued operations because these are not reflective of the performance of our core operations.

Underwriting Ratios
In presenting our results for the Atrium and StarStone segments, we discuss the loss ratio, acquisition cost ratio, operating expense ratio, and the combined ratio of our active underwriting operations within these segments. Management believes that these ratios provide the most meaningful measure for understanding our underwriting profitability. These measures are not defined in GAAP, but are calculated using GAAP amounts presented on the statements of earnings for both Atrium and StarStone.
The loss ratio is calculated by dividing net incurred losses and LAE by net premiums earned. The acquisition cost ratio is calculated by dividing acquisition costs by net premiums earned. The operating expense ratio is calculated by dividing operating expenses by net premiums earned. The combined ratio is the sum of the loss ratio, the acquisition cost ratio and the operating expense ratio.
The Atrium segment also includes corporate expenses that are not directly attributable to the underwriting results in the segment. The corporate expenses include general and administrative expenses related to amortization of the definite-lived intangible assets in the holding company, and expenses relating to Atrium Underwriters Limited ("AUL") employee salaries, benefits, bonuses and current year share grant costs. The AUL general and administrative expenses are incurred in managing the syndicate. These are principally funded by the profit commission fees earned from Syndicate 609, which is a revenue item not included in the insurance ratios.
The StarStone segment also includes corporate expenses that are not directly attributable to the underwriting results in the segment and are not included in the insurance ratios. The corporate expenses include non-recurring expenses, reorganization expenses and holding company expenses.

Current Outlook
Novel Coronavirus Pandemic (“COVID-19”)
Operational Impact. The evolving COVID-19 pandemic has caused significant disruption in global financial markets and economies. Although the operational impact to us has been minimal, with virtually all of our employees working remotely, the scope, duration and magnitude of the direct and indirect effects of the COVID-19 pandemic are changing rapidly and are difficult to anticipate. As with others in our industry, we are subject to economic factors such as interest rates, foreign exchange rates, underwriting events, regulation, tax policy changes, political risks and other market risks that can impact our strategy and operations. For additional information on the risks posed by the COVID-19 pandemic, refer to "Risk Factors" included in this Quarterly Report on Form 10-Q.
Investments Impact. The value of our investment portfolio has been significantly impacted by the ongoing uncertainty and volatility in financial markets caused by the COVID-19 pandemic. For our fixed income portfolio, the COVID-19 pandemic has coincided with interest rates dropping to historically low levels which, in conjunction with credit spreads widening in the first quarter of 2020 and then tightening during the second quarter of 2020, has collectively resulted in significant unrealized gains in our fixed income portfolio for the period. As of June 30, 2020, our fixed income portfolio is well-positioned with an A+ average credit rating, but the COVID-19 pandemic has
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increased the risk of defaults across many industries and we continue to monitor credit risk during this time of volatility. We expect interest rates and credit spreads will remain volatile in the near-term.
Our other investments, including equities, hedge funds and other non-fixed income investments, carry higher expected returns, have a longer investment time horizon, and provide diversification from our fixed income portfolio. We therefore accept that their returns may be relatively volatile over the short term. Heightened volatility in equity markets has occurred during the COVID-19 pandemic, and equity prices have generally recovered from the sharp declines experienced in the first quarter of 2020, resulting in unrealized gains in our equity and other investments during the period. We anticipate continued volatility in the global investment markets as a result of the economic conditions caused by the COVID-19 pandemic.
Our results for the three and six months ended June 30, 2020 included the impact of unrealized investment gains of $909.4 million and $277.1 million, respectively, primarily due to the disruption in financial markets resulting from the COVID-19 pandemic.
Underwriting Impact. During the three and six months ended June 30, 2020, our Non-life Run-off segment had no underwriting losses related to the COVID-19 pandemic. However, our Atrium and StarStone segments have incurred COVID-19 related net underwriting losses as follows:
Three Months Ended June 30, 2020Six Months Ended June 30, 2020
Total Noncontrolling Interests' ShareEnstar's ShareTotalNoncontrolling Interests' ShareEnstar's Share
(in millions of U.S. dollars)
Atrium$4.3  $(1.7) $2.5  $12.8  $(5.3) $7.6  
StarStone - International (1)
15.3  (5.6) 9.7  39.8  (12.4) 27.5  
StarStone - U.S. (2)
—  —  —  7.5  (3.1) 4.4  
Total$19.6  $(7.3) $12.2  $60.1  $(20.8) $39.5  
(1) Includes the impact of outwards reinstatement premiums of $2.0 million and a premium deficiency provision of $16.3 million for both the three and six months ended June 30, 2020.
(2) Included within net earnings (loss) from discontinued operations, net of income taxes.
COVID-19 net incurred losses and LAE for the Atrium segment primarily included losses in the accident and health and non-marine direct and facultative lines of business, whereas losses in the StarStone segment included losses primarily in the casualty, property and marine lines of business. For a breakdown of COVID-19 net underwriting losses by segment and line of business, refer to the "Atrium Segment" and "StarStone Segment" sections below. We expect gross premiums written in certain business lines, primarily commercial lines, may be impacted due to the severely reduced business activity following government restrictions that have temporarily prevented many businesses from operating in their usual manner, which may be partially offset by improving pricing conditions and new business opportunities.
The amounts of Non-life Run-off, Atrium and StarStone losses referenced herein represent our estimate of underwriting losses related to the COVID-19 pandemic incurred through June 30, 2020. Given the uncertainties associated with the COVID-19 pandemic and its impact, and the limited information upon which our current estimates have been made, our preliminary reserves and the estimated liability for losses and LAE arising from the COVID-19 pandemic may materially change.
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Strategic Developments with StarStone
Recapitalization of StarStone U.S.
On June 10, 2020, we announced an agreement to sell StarStone U.S. to Core Specialty, a newly formed company in which we will retain a minority interest. In connection with the sale, a new management team and Board will be appointed for StarStone U.S. and the net loss reserves of StarStone U.S. will be reinsured to one of our Non-life Run-off subsidiaries.
StarStone U.S. is a specialty property and casualty insurance group principally focused on the excess and surplus lines ("E&S") market in the U.S., marketing these insurance products in all 50 states, primarily through a network of independent insurance brokers. StarStone U.S. is organized into four separately managed business units: excess casualty, management professional liability, healthcare liability and workers’ compensation. StarStone U.S. believes that significant growth opportunities exist in the E&S segment of the P&C market due to dislocation in the overall property and casualty market.
Run-off of StarStone International (non-U.S.)
On June 10, 2020, we also announced that we are placing StarStone International into an orderly run-off. The liabilities associated with the StarStone International Run-Off vary in duration, and the run-off is expected to occur over a number of years. Steps to reduce the size of StarStone International's operations have begun and will involve several phases to occur over time. As a result, we cannot anticipate with certainty the expected completion date of the StarStone International Run-Off.
We continue to evaluate additional strategic options for StarStone International's operations and business. Consequently, such options could have the effect of mitigating costs associated with placing the business into run-off. The remaining StarStone International operations will continue to serve the needs of policyholders and ensure that the companies continue to meet all regulatory requirements.
For additional information about these strategic developments, refer to Note 4 - "Divestitures, Held-for-Sale Businesses and Discontinued Operations" to our unaudited condensed consolidated financial statements included within Item 1 of this Quarterly Report on Form 10-Q and the "StarStone Segment" section below.
Non-life Run-off Business Opportunities
During 2020, our acquisition activity in the Non-life Run-off segment proceeded in the ordinary course, and we completed transactions with Hannover Re, Munich Re, AXA Group, Aspen and Lyft. Collectively, these transactions represent approximately $1.7 billion of assets and liabilities. Refer to Note 3 - "Significant New Business" to our unaudited condensed consolidated financial statements included within Item 1 of this Quarterly Report on Form 10-Q for further details on these transactions.

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Consolidated Results of Operations - For the Three and Six Months Ended June 30, 2020 and 2019
The following table sets forth our unaudited condensed consolidated statements of earnings for each of the periods indicated. For a discussion of the critical accounting policies that affect the results of operations, see "Critical Accounting Policies" in our Annual Report on Form 10-K for the year ended December 31, 2019, and within this Quarterly Report on Form 10-Q.
 Three Months EndedSix Months Ended
June 30,June 30,
 20202019Change20202019Change
 (in thousands of U.S. dollars)
INCOME
Net premiums earned$142,871  $190,962  $(48,091) $302,222  $442,909  $(140,687) 
Fees and commission income10,010  6,017  3,993  17,538  12,494  5,044  
Net investment income94,443  74,271  20,172  169,157  149,922  19,235  
Net realized and unrealized gains (1)
967,608  260,669  706,939  338,547  713,429  (374,882) 
Other income (expense)(1,087) 11,025  (12,112) 19,357  16,836  2,521  
1,213,845  542,944  670,901  846,821  1,335,590  (488,769) 
EXPENSES
Net incurred losses and LAE186,692  146,554  40,138  229,992  402,853  (172,861) 
Life and annuity policy benefits—  2,194  (2,194) —  2,290  (2,290) 
Acquisition costs49,067  51,081  (2,014) 95,110  128,882  (33,772) 
General and administrative expenses144,830  100,676  44,154  243,258  198,939  44,319  
Interest expense14,018  13,036  982  27,433  24,072  3,361  
Net foreign exchange (gains) losses5,158  (2,579) 7,737  (6,781) (6,432) (349) 
399,765  310,962  88,803  589,012  750,604  (161,592) 
EARNINGS BEFORE INCOME TAXES814,080  231,982  582,098  257,809  584,986  (327,177) 
Income tax expense(16,652) (7,698) (8,954) (11,380) (11,800) 420  
Earnings (loss) from equity method investments(8,790) 17,713  (26,503) 3,660  26,485  (22,825) 
NET EARNINGS FROM CONTINUING OPERATIONS788,638  241,997  546,641  250,089  599,671  (349,582) 
NET EARNINGS (LOSS) FROM DISCONTINUED OPERATIONS, NET OF INCOME TAXES(1,152) (3,943) 2,791  (3,221) 4,125  (7,346) 
NET EARNINGS787,486  238,054  549,432  246,868  603,796  (356,928) 
Net loss attributable to noncontrolling interest19,992  2,713  17,279  52,714  4,861  47,853  
NET EARNINGS ATTRIBUTABLE TO ENSTAR807,478  240,767  566,711  299,582  608,657  (309,075) 
Dividends on preferred shares(8,925) (8,925) —  (17,850) (18,064) 214  
NET EARNINGS ATTRIBUTABLE TO ENSTAR ORDINARY SHAREHOLDERS$798,553  $231,842  $566,711  $281,732  $590,593  $(308,861) 
(1) We have historically utilized trading accounting, where unrealized amounts are reflected in earnings. However, from October 1, 2019 we have been electing to use AFS accounting and, where permissible, as trading fixed maturity securities mature, we are reinvesting the proceeds into AFS securities for the Non-life Run-off and StarStone segments. For a breakdown between realized and unrealized gains and losses, refer to Note 5 - "Investments" to our unaudited condensed consolidated financial statements included within Item 1 of this Quarterly Report on Form 10-Q.

Highlights

Consolidated Results of Operations for the Three Months Ended June 30, 2020:
Consolidated net earnings attributable to Enstar ordinary shareholders of $798.6 million and basic and diluted net earnings per ordinary share of $37.03 and $36.65, respectively.
Non-GAAP operating income attributable to Enstar ordinary shareholders of $567.6 million and diluted non-GAAP operating income per ordinary share of $26.05. For a reconciliation of non-GAAP operating income attributable to Enstar ordinary shareholders to net earnings attributable to Enstar ordinary shareholders calculated in accordance with GAAP, and diluted non-GAAP operating income per ordinary share to diluted net earnings per ordinary share calculated in accordance with GAAP, see "Non-GAAP Financial Measure" above.
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Net earnings from our Non-life Run-off segment of $826.3 million, which included the impact of net realized and unrealized gains of $926.5 million comprising $57.0 million of net realized gains and $869.4 million of net unrealized gains driven by increases in the valuation of our other investments, fixed maturity and equity securities, primarily due to narrowing credit spreads and favorable movements in equity markets.
The current period unrealized investment gains were partially offset by net unfavorable development on losses and LAE of $91.5 million, including $134.0 million relating to fair value accounting on certain liabilities for which we had elected the fair value option primarily due to narrowing credit spreads on corporate bond yields in the period.
Combined ratio of 76.2% for our Atrium segment, with net premiums earned of $43.4 million. Excluding the estimated underwriting losses related to the COVID-19 pandemic, the combined ratio for the Atrium segment was 66.4% for the three months ended June 30, 2020.
Combined ratio of 158.9% for our StarStone segment, with net premiums earned of $82.8 million. Excluding the impact of the exit costs associated with the StarStone International Run-Off, the combined ratio for the StarStone segment was 118.9% and included net underwriting losses related to the COVID-19 pandemic of $15.3 million for the three months ended June 30, 2020.

Consolidated Results of Operations for the Six Months Ended June 30, 2020:
Consolidated net earnings attributable to Enstar ordinary shareholders of $281.7 million and basic and diluted net earnings per ordinary share of $13.07 and $12.93, respectively.
Non-GAAP operating income attributable to Enstar ordinary shareholders of $229.8 million and diluted non-GAAP operating income per ordinary share of $10.55. For a reconciliation of non-GAAP operating income attributable to Enstar ordinary shareholders to net earnings attributable to Enstar ordinary shareholders calculated in accordance with GAAP, and diluted non-GAAP operating income per ordinary share to diluted net earnings per ordinary share calculated in accordance with GAAP, see "Non-GAAP Financial Measure" above.
Net earnings from Non-life Run-off segment of $377.3 million, including net realized and unrealized gains of $351.8 million comprised of $59.1 million of net realized gains and $292.7 million of net unrealized gains driven by increases in the valuation of our other investments and fixed maturity securities, partially offset by decreases in the valuation of our equity securities, primarily due to declining interest rates, narrowing credit spreads and unfavorable movements in equity markets, respectively.
Combined ratio of 91.8% for our Atrium segment, with net premiums earned of $85.8 million. Excluding the estimated underwriting losses related to the COVID-19 pandemic, the combined ratio for the Atrium segment was 76.9% for the six months ended June 30, 2020.
Combined ratio of 138.7% for our StarStone segment, with net premiums earned of $180.5 million. Excluding the impact of the exit costs associated with the StarStone International Run-Off, the combined ratio for the StarStone segment was 120.3% and included net underwriting losses related to the COVID-19 pandemic of $39.8 million.

Consolidated Financial Condition as of June 30, 2020:
Total investments, cash and funds held of $15.6 billion.
Total reinsurance balances recoverable on paid and unpaid losses of $2.1 billion.
Total assets of $21.3 billion.
Total gross and net reserves for losses and LAE of $10.6 billion and $8.5 billion, respectively. During the six months ended June 30, 2020, our Non-life Run-off segment assumed net reserves of $1.4 billion.
Total capital under management of $7.1 billion, including common equity of $4.7 billion, preferred equity of $510.0 million, noncontrolling interests of $380.1 million and debt of $1.5 billion.
Fully diluted book value per ordinary share of $213.06, an increase of 7.6% since December 31, 2019, which was driven primarily by the impact of the changes in the fair value of our investment portfolio attributable to the recent disruption and recovery in global financial markets associated with the COVID-19 pandemic and the reduction in the redemption value of RNCI, partially offset by exit costs associated with the StarStone International Run-Off, as discussed further below.
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Consolidated Overview - For the Three Months Ended June 30, 2020 and 2019
In addition to the exit costs associated with the StarStone International Run-Off and the impact of the COVID-19 pandemic in 2020, the comparability of our results across different periods was impacted by the acquisitions and reinsurance transactions we completed during the six months ended June 30, 2020 with AXA Group, Aspen and Lyft and in 2019 with Morse TEC, Zurich, Maiden Re, Amerisure and AmTrust. Refer to Note 3 - "Significant New Business" to our unaudited condensed consolidated financial statements included within Item 1 of this Quarterly Report on Form 10-Q for further details on the 2020 transactions and "Item 1. Business - Recent Acquisitions and Significant New Business" in our Annual Report on Form 10-K for the year ended December 31, 2019 for further details on the 2019 transactions.
We reported consolidated earnings attributable to Enstar ordinary shareholders of $798.6 million for the three months ended June 30, 2020, an increase of $566.7 million from net earnings of $231.8 million for the three months ended June 30, 2019. The most significant drivers of our consolidated financial performance during the three months ended June 30, 2020 as compared to the three months ended June 30, 2019 included:
Non-life Run-off - Net earnings attributable to the Non-life Run-off segment were $826.3 million for the three months ended June 30, 2020 compared to $277.8 million for the three months ended June 30, 2019. The increase in net earnings of $548.5 million was primarily due to net realized and unrealized gains of $926.5 million on our investment portfolio in the current period compared to net gains of $241.5 million in the comparative period. Current period net realized and unrealized gains were driven by increases in the valuation of our other investments, fixed maturity and equity securities, primarily due to narrowing credit spreads and favorable movements in equity markets. The current period unrealized investment gains were partially offset by $134.0 million included in net incurred losses and LAE relating to fair value accounting on certain liabilities for which we had elected the fair value option primarily due to narrowing credit spreads on corporate bond yields in the period.
Atrium - Net earnings attributable to the Atrium segment were $11.3 million for the three months ended June 30, 2020 compared to $6.1 million for the three months ended June 30, 2019. The increase in net earnings was primarily due to higher net realized and unrealized gains on our investment portfolio, driven by narrowing credit spreads and higher fees and commission income in the current period.
StarStone - Net losses attributable to the StarStone segment were $25.9 million for the three months ended June 30, 2020 compared to $33.2 million for the three months ended June 30, 2019. The decrease in net losses was primarily due to net realized and unrealized gains on our investment portfolio, driven by narrowing credit spreads in the current period. These investment gains were offset by exit costs associated with the StarStone International Run-Off.
Net Realized and Unrealized Gains - Consolidated net realized and unrealized gains were $967.6 million for the three months ended June 30, 2020 compared to $260.7 million for the three months ended June 30, 2019. The net realized and unrealized gains in the current period were primarily attributable to increases in the valuation of our other investments, fixed maturity and equity securities, primarily due to narrowing credit spreads and favorable movements in equity markets.
Non-GAAP Operating Income - Our non-GAAP operating income attributable to Enstar ordinary shareholders, which excludes the impact of net realized and unrealized gains and losses on fixed maturity investments and other items, was $567.6 million for the three months ended June 30, 2020, an increase of $458.0 million from non-GAAP operating income attributable to Enstar ordinary shareholders of $109.7 million for the three months ended June 30, 2019. The increase was primarily attributable to net realized and unrealized gains on our other investments and equities of $511.0 million and $39.2 million, respectively, during the three months ended June 30, 2020. For a reconciliation of non-GAAP operating income attributable to Enstar ordinary shareholders to net earnings attributable to Enstar ordinary shareholders calculated in accordance with GAAP, see "Non-GAAP Financial Measure" above.

Consolidated Overview - For the Six Months Ended June 30, 2020 and 2019
We reported consolidated net earnings attributable to Enstar ordinary shareholders of $281.7 million for the six months ended June 30, 2020, a decrease of $308.9 million from net earnings of $590.6 million for the six months ended June 30, 2019. The most significant drivers of our consolidated financial performance during the six months ended June 30, 2020 as compared to the six months ended June 30, 2019 included:
Non-life Run-off - Net earnings attributable to the Non-life Run-off segment were $377.3 million and $678.6 million for the six months ended June 30, 2020 and 2019, respectively. The decrease in net earnings of $301.3 million was primarily due to lower net realized and unrealized gains on our investment portfolio in the current period.
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Current period net realized and unrealized gains were driven by increases in the valuation of our other investments and fixed maturity securities primarily due to favorable movements in equity markets and declining interest rates.
Atrium - Net earnings for the six months ended June 30, 2020 and 2019 were $5.7 million and $10.6 million, respectively. The decrease was primarily due to a higher loss ratio and a lower investment return, both of which were largely driven by the COVID-19 pandemic, partially offset by higher fees and commission income in the current period.
StarStone - Net losses were $62.4 million and $64.2 million for the six months ended June 30, 2020 and 2019, respectively. The decrease in net losses was primarily driven by a lower combined ratio, partially offset by exit costs associated with the StarStone International Run-Off and net realized and unrealized losses in the period, driven by the impact of the COVID-19 pandemic on global financial markets.
Net Realized and Unrealized Gains - Net realized and unrealized gains were $338.5 million for the six months ended June 30, 2020 compared to $713.4 million for the six months ended June 30, 2019. The net realized and unrealized gains in the current period were driven by increases in the valuation of our other investments and fixed maturity securities, primarily due to declining interest rates and favorable movements in equity markets. The unrealized gains for the six months ended June 30, 2019 were primarily attributable to increases in the valuation of our fixed maturity and other investments, largely driven by tightening credit spreads and favorable movement in international equity markets.
Non-GAAP operating income - Our Non-GAAP operating income, which excludes the impact of net realized and unrealized gains and losses on fixed maturity securities and other items, was $229.8 million for the six months ended June 30, 2020, a decrease of $78.6 million from non-GAAP operating income of $308.4 million for the six months ended June 30, 2019. The decrease was primarily attributable to losses on our equity securities of $51.7 million during the six months ended June 30, 2020. For a reconciliation of non-GAAP operating income attributable to Enstar ordinary shareholders to net earnings attributable to Enstar ordinary shareholders calculated in accordance with GAAP, see "Non-GAAP Financial Measure" above.

Results of Operations by Segment - For the Three and Six Months Ended June 30, 2020 and 2019
We have three reportable segments of business that are each managed, operated and reported upon separately: (i) Non-life Run-off; (ii) Atrium; and (iii) StarStone. Our other activities, which do not qualify as a reportable segment, include our corporate expenses, debt servicing costs, holding company income and expenses, foreign exchange and other miscellaneous items. These segments are described in Note 1 - "Description of Business" to our consolidated financial statements contained in our Annual Report on Form 10-K for the year ended December 31, 2019.
The below table provides a split by operating segment and our other activities of the net earnings (loss) attributable to Enstar ordinary shareholders:
Three Months EndedSix Months Ended
 June 30,June 30,
 20202019Change20202019Change
 (in thousands of U.S. dollars)
Segment split of net earnings attributable to Enstar ordinary shareholders:
Non-life Run-off$826,325  $277,812  $548,513  $377,299  $678,557  $(301,258) 
Atrium11,271  6,079  5,192  5,709  10,576  (4,867) 
StarStone(25,909) (33,175) 7,266  (62,421) (64,176) 1,755  
Other(13,134) (18,874) 5,740  (38,855) (34,364) (4,491) 
Net earnings attributable to Enstar ordinary shareholders$798,553  $231,842  $566,711  $281,732  $590,593  $(308,861) 

The following is a discussion of our results of operations by segment.

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Non-life Run-off Segment
The following is a discussion and analysis of the results of operations for our Non-life Run-off segment.
Three Months EndedSix Months Ended
June 30,June 30,
20202019Change20202019Change
(in thousands of U.S. dollars)
Gross premiums written$(2,155) $(4,209) $2,054  $(1,828) $(25,086) $23,258  
Net premiums written$(3,203) $(3,409) $206  $(1,027) $(22,587) $21,560  
Net premiums earned$10,517  $48,470  $(37,953) $26,547  $125,144  $(98,597) 
Net incurred losses and LAE (1)
(91,474) (9,752) (81,722) (29,440) (104,934) 75,494  
Acquisition costs(3,589) (16,512) 12,923  (10,496) (44,667) 34,171  
Operating expenses(48,562) (44,208) (4,354) (96,772) (88,200) (8,572) 
Underwriting income (loss) (1)
(133,108) (22,002) (111,106) (110,161) (112,657) 2,496  
Net investment income89,056  65,857  23,199  156,507  132,585  23,922  
Net realized and unrealized gains (losses) (2)
926,494  241,542  684,952  351,812  677,728  (325,916) 
Fees and commission income3,966  4,645  (679) 8,951  9,477  (526) 
Other income (expense)(2,231) 9,917  (12,148) 20,064  15,421  4,643  
Corporate expenses(17,400) (18,734) 1,334  (25,520) (35,304) 9,784  
Interest expense(16,181) (15,619) (562) (32,080) (27,735) (4,345) 
Net foreign exchange gains (losses)(4,605) 3,752  (8,357) 10,048  7,370  2,678  
EARNINGS BEFORE INCOME TAXES845,991  269,358  576,633  379,621  666,885  (287,264) 
Income tax expense(11,812) (7,399) (4,413) (9,005) (10,119) 1,114  
Earnings from equity method investments(8,790) 18,119  (26,909) 3,660  26,703  (23,043) 
NET EARNINGS825,389  280,078  545,311  374,276  683,469  (309,193) 
Net loss (earnings) attributable to noncontrolling interest936  (2,266) 3,202  3,023  (4,912) 7,935  
NET EARNINGS ATTRIBUTABLE TO ENSTAR ORDINARY SHAREHOLDERS$826,325  $277,812  $548,513  $377,299  $678,557  $(301,258) 
(1) Comparability between periods is impacted by the current period net incurred losses and LAE as acquired unearned premium is earned, and by changes in fair value due to the election of the fair value option on certain business. Refer to Net Incurred Losses and LAE table for further details.
(2) We have historically utilized trading accounting, where unrealized amounts are reflected in earnings. However, from October 1, 2019, we have elected to use AFS accounting and, where permissible, as trading fixed income securities mature, we are reinvesting the proceeds into AFS securities for the Non-life Run-off segment.

Overall Results
Three Months Ended June 30: Net earnings were $826.3 million for the three months ended June 30, 2020 compared to $277.8 million for the three months ended June 30, 2019, an increase of $548.5 million. This increase was primarily due to net realized and unrealized gains of $926.5 million on our investment portfolio in the current period compared to $241.5 million in the comparative period, a change of $685.0 million. Current period net realized and unrealized gains were driven by increases in the valuation of our other investments, fixed maturity and equity securities, primarily due to narrowing credit spreads and favorable movements in equity markets.
Our underwriting result included a favorable reduction in estimates of prior period net ultimate losses of $56.6 million in the current period, compared to $63.1 million in the comparative period. Our underwriting result also includes the amortization of deferred charge assets, amortization of fair value adjustments and the change in fair value for those liabilities where we elected the fair value option, representing an aggregate expense of $152.4 million in the current period compared to $49.6 million in the comparative period.

Six Months Ended June 30: Net earnings were $377.3 million and $678.6 million for the six months ended June 30, 2020 and 2019, respectively, a decrease of $301.3 million. The decrease was primarily attributable to a decrease of $325.9 million in net realized and unrealized gains on investments. Current period net realized and unrealized gains were driven by increases in the valuation of our other investments and fixed maturity securities, partially offset by decreases in the valuation of our equity securities, primarily due to declining interest rates, narrowing credit spreads and unfavorable movements in equity markets, respectively.
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Our underwriting result included a favorable reduction in estimates of prior period net ultimate losses of $84.4 million in the current period, compared to $73.4 million in the comparative period. Our underwriting result also includes the amortization of deferred charge assets, amortization of fair value adjustments and the change in fair value for those liabilities where we elected the fair value option, representing an aggregate expense of $117.8 million in the current period compared to $121.5 million in the comparative period.
An analysis of the components of the segment's net earnings is shown below. Investment results are separately discussed below in "Investments Results - Consolidated."

Net Premiums Earned:
The following table shows the gross and net premiums written and earned for the Non-life Run-off segment:
 Three Months EndedSix Months Ended
June 30,June 30,
 20202019Change20202019Change
 (in thousands of U.S. dollars)
Gross premiums written$(2,155) $(4,209) $2,054  $(1,828) $(25,086) $23,258  
Ceded reinsurance premiums written(1,048) 800  (1,848) 801  2,499  (1,698) 
Net premiums written$(3,203) $(3,409) $206  $(1,027) $(22,587) $21,560  
Gross premiums earned$14,395  $55,551  $(41,156) $32,473  $139,517  $(107,044) 
Ceded reinsurance premiums earned(3,878) (7,081) 3,203  (5,926) (14,373) 8,447  
Net premiums earned$10,517  $48,470  $(37,953) $26,547  $125,144  $(98,597) 

As business in this segment is in run-off, our general expectation is for premiums associated with legacy business to decline in future periods. However, the actual amount in any particular period will be impacted by new transactions during the period and the run-off of premiums from transactions completed in recent years. Premiums earned in this segment are generally offset by net incurred losses and LAE related to the premiums. Premiums earned may be higher than premiums written as we may assume unearned premium without writing the premium ourselves.
Three and Six Months Ended June 30: Net premiums written in the three and six months ended June 30, 2020 of $(3.2) million and $(1.0) million, respectively, were primarily related to reductions in net written premium on legacy business for which corresponding unearned premium was also released. Net premiums earned in the three and six months ended June 30, 2020 of $10.5 million and $26.5 million, respectively, were primarily related to the run-off business assumed as a result of the AmTrust RITC transactions. Premiums written and earned in the three and six months ended June 30, 2019 were primarily related to the run-off business assumed as a result of the AmTrust RITC transactions and the acquisition of Maiden Reinsurance North America, Inc. ("Maiden Re North America").


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Net Incurred Losses and LAE:
The following table shows the components of net incurred losses and LAE for the Non-life Run-off segment:
Three Months Ended June 30,
 20202019
 Prior
Periods
Current
Period
TotalPrior
Periods
Current
Period
Total
 (in thousands of U.S. dollars)
Net losses paid$283,604  $(202) $283,402  $308,226  $20,877  $329,103  
Net change in case and LAE reserves (1)
(75,276) (830) (76,106) (121,377) 1,543  (119,834) 
Net change in IBNR reserves (2)
(264,900) 9,118  (255,782) (249,923) 11,691  (238,232) 
Increase (reduction) in estimates of net ultimate losses(56,572) 8,086  (48,486) (63,074) 34,111  (28,963) 
Increase (reduction) in provisions for unallocated LAE(12,425) —  (12,425) (11,160) 264  (10,896) 
Amortization of deferred charge assets11,062  —  11,062  3,934  —  3,934  
Amortization of fair value adjustments7,280  —  7,280  7,715  —  7,715  
Changes in fair value - fair value option134,043  —  134,043  37,962  —  37,962  
Net incurred losses and LAE$83,388  $8,086  $91,474  $(24,623) $34,375  $9,752  
(1) Net change in case and LAE reserves comprises the movement during the period in specific case reserve liabilities as a result of claims settlements or changes advised to us by our policyholders and attorneys, less changes in case reserves recoverable advised by us to our reinsurers as a result of the settlement or movement of assumed claims.
(2) Net change in IBNR reserves represents the gross change in our actuarial estimates of IBNR reserves, less amounts recoverable.

Three Months Ended June 30: The increase in net incurred losses and LAE for the three months ended June 30, 2020 of $91.5 million included net incurred losses and LAE of $8.1 million related to current period net earned premium, primarily in respect of the run-off business acquired with the AmTrust RITC transactions. Excluding current period net incurred losses and LAE of $8.1 million, the increase in net incurred losses and LAE relating to prior periods was $83.4 million, which was attributable to an increase in the fair value of liabilities of $134.0 million related to our assumed retroactive reinsurance agreements for which we have elected the fair value option primarily due to narrowing credit spreads on corporate bond yields in the period, amortization of the deferred charge assets of $11.1 million and amortization of fair value adjustments over the estimated payout period relating to companies acquired of $7.3 million, partially offset by a reduction in estimates of net ultimate losses of $56.6 million and a reduction in provisions for unallocated LAE of $12.4 million relating to 2020 run-off activity. The reduction in estimates of net ultimate losses relating to prior periods of $56.6 million for the three months ended June 30, 2020 included a net reduction in case and IBNR reserves of $340.2 million, partially offset by net losses paid of $283.6 million.
Net incurred losses and LAE for the three months ended June 30, 2019 of $9.8 million included net incurred losses and LAE of $34.4 million related to current period net earned premium, primarily for the run-off business acquired with the AmTrust RITC transactions and the acquisition of Maiden Re North America. Excluding current period net incurred losses and LAE of $34.4 million, the reduction in net incurred losses and LAE relating to prior periods was $24.6 million, which was attributable to a reduction in estimates of net ultimate losses of $63.1 million and a reduction in provisions for unallocated LAE of $11.2 million relating to 2019 run-off activity, partially offset by an increase in the fair value of liabilities of $38.0 million related to our assumed retroactive reinsurance agreements for which we have elected the fair value option, amortization of fair value adjustments over the estimated payout period relating to companies acquired of $7.7 million and amortization of the deferred charge assets of $3.9 million. The reduction in estimates of net ultimate losses relating to prior periods of $63.1 million for the three months ended June 30, 2019 included a net reduction in case and IBNR reserves of $371.3 million, partially offset by net losses paid of $308.2 million.

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The following table shows the components of net incurred losses and LAE for the Non-life Run-off segment for the six months ended June 30, 2020 and 2019:
Six Months Ended June 30,
 20202019
 Prior
Periods
Current
Period
TotalPrior
Periods
Current
Period
Total
 (in thousands of U.S. dollars)
Net losses paid$541,330  $1,038  $542,368  $639,281  $38,891  $678,172  
Net change in case and LAE reserves (1)
(251,528) 842  (250,686) (218,950) 21,415  (197,535) 
Net change in IBNR reserves (2)
(374,234) 14,055  (360,179) (493,738) 22,611  (471,127) 
Increase (reduction) in estimates of net ultimate losses(84,432) 15,935  (68,497) (73,407) 82,917  9,510  
Increase (reduction) in provisions for unallocated LAE(19,904) —  (19,904) (26,600) 529  (26,071) 
Amortization of deferred charge assets25,692  —  25,692  10,997  —  10,997  
Amortization of fair value adjustments16,343  —  16,343  16,495  —  16,495  
Changes in fair value - fair value option75,806  —  75,806  94,003  —  94,003  
Net incurred losses and LAE$13,505  $15,935  $29,440  $21,488  $83,446  $104,934  
(1) Net change in case and LAE reserves comprises the movement during the period in specific case reserve liabilities as a result of claims settlements or changes advised to us by our policyholders and attorneys, less changes in case reserves recoverable advised by us to our reinsurers as a result of the settlement or movement of assumed claims.
(2) Net change in IBNR reserves represents the gross change in our actuarial estimates of IBNR reserves, less amounts recoverable.
Six Months Ended June 30: The increase in net incurred losses and LAE for the six months ended June 30, 2020 of $29.4 million included net incurred losses and LAE of $15.9 million related to current period net earned premium, primarily for the run-off business acquired with the AmTrust RITC transactions. Excluding current period net incurred losses and LAE of $15.9 million, the increase in net incurred losses and LAE liabilities relating to prior periods was $13.5 million, which was attributable to an increase in the fair value of liabilities of $75.8 million related to our assumed retroactive reinsurance agreements for which we have elected the fair value option primarily due to declining interest rates on corporate bond yields in the period, amortization of the deferred charge assets of $25.7 million and amortization of fair value adjustments over the estimated payout period relating to companies acquired of $16.3 million, partially offset by a reduction in estimates of net ultimate losses of $84.4 million and a reduction in provisions for unallocated LAE of $19.9 million relating to 2020 run-off activity. The reduction in estimates of net ultimate losses relating to prior periods of $84.4 million for the six months ended June 30, 2020 included a net change in case and IBNR reserves of $625.8 million, partially offset by net losses paid of $541.3 million.
The increase in net incurred losses and LAE for the six months ended June 30, 2019 of $104.9 million included net incurred losses and LAE of $83.4 million related to current period net earned premium, primarily for the run-off business acquired with the AmTrust RITC transactions and the acquisition of Maiden Re North America. Excluding current period net incurred losses and LAE of $83.4 million, the increase in net incurred losses and LAE liabilities relating to prior periods was $21.5 million, which was attributable to an increase in the fair value of liabilities of $94.0 million related to our assumed retroactive reinsurance agreements for which we have elected the fair value option, amortization of fair value adjustments over the estimated payout period relating to companies acquired of $16.5 million and amortization of the deferred charge assets of $11.0 million, partially offset by a reduction in estimates of net ultimate losses of $73.4 million and a reduction in provisions for unallocated LAE of $26.6 million, relating to 2019 run-off activity. The reduction in estimates of net ultimate losses of $73.4 million for the six months ended June 30, 2019 included a net change in case and IBNR reserves of $712.7 million, partially offset by net losses paid of $639.3 million.


Acquisition Costs:
Three and Six Months Ended June 30: Acquisition costs were $3.6 million and $16.5 million for the three months ended June 30, 2020 and 2019, respectively, and $10.5 million and $44.7 million for the six months ended June 30, 2020 and 2019, respectively. The reduction in acquisition costs compared to the prior period was due to a lower level of net premiums earned and lower associated acquisition costs in respect of the run-off business assumed through the AmTrust RITC transactions and the acquisition of Maiden Re North America.

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Fees and Commission Income:
Three and Six Months Ended June 30: Our management companies in the Non-life Run-off segment earned fees and commission income of $4.0 million and $4.6 million for the three months ended June 30, 2020 and 2019, respectively, and $9.0 million and $9.5 million for the six months ended June 30, 2020 and 2019, respectively.

Other Income (Expense):
Three Months Ended June 30: For the three months ended June 30, 2020, we recorded other expense of $2.2 million compared to other income of $9.9 million for the three months ended June 30, 2019, a change of $12.1 million, primarily driven by a smaller reduction in defendant asbestos and environmental net liabilities in the current period.
Six Months Ended June 30: Other income was $20.1 million for the six months ended June 30, 2020 compared to $15.4 million for the six months ended June 30, 2019, an increase of $4.6 million, primarily as a result of reductions in defendant asbestos and environmental net liabilities in the current period.

General and Administrative Expenses:
General and administrative expenses consist of operating expenses and corporate expenses.
Three Months Ended June 30,Six Months Ended June 30,
20202019Change20202019Change
(in thousands of U.S. dollars)
Operating expenses$48,562  $44,208  $4,354  $96,772  $88,200  $8,572  
Corporate expenses17,400  18,734  (1,334) 25,520  35,304  (9,784) 
General and administrative expenses$65,962  $62,942  $3,020  $122,292  $123,504  $(1,212) 

Three and Six Months Ended June 30: General and administrative expenses were $66.0 million and $62.9 million for the three months ended June 30, 2020 and 2019, respectively, an increase of $3.0 million. This increase was primarily attributable to higher performance-based salary and benefit accruals as a result of higher earnings in the current period.
For the six months ended June 30, 2020 and 2019, general and administrative expenses were $122.3 million and $123.5 million, respectively, a decrease of $1.2 million. This decrease was primarily attributable to lower performance-based salary and benefit accruals as a result of lower earnings in the current period.

Interest Expense:
Three and Six Months Ended June 30: Interest expense was $16.2 million and $15.6 million for the three months ended June 30, 2020 and 2019, and $32.1 million and $27.7 million for the six months ended June 30, 2020 and 2019, respectively, an increase of $4.3 million in the current six-month period. The increase reflects higher debt balances in the six months ended June 30, 2020 compared to the six months ended June 30, 2019 as facilities were utilized during the three months ended March 31, 2020 to (i) provide $150.0 million of funding for significant new business and (ii) provide $200.0 million of additional liquidity to the Company to maximize financial flexibility following the recent disruption in global financial markets associated with the COVID-19 pandemic.

Net Foreign Exchange Gains (Losses):
Three and Six Months Ended June 30: Net foreign exchange losses were $4.6 million compared to net foreign exchange gains of $3.8 million for the three months ended June 30, 2020 and 2019, respectively. Net foreign exchange gains were $10.0 million and $7.4 million for the six months ended June 30, 2020 and 2019, respectively. The net foreign exchange losses for the three months ended June 30, 2020 and the net foreign exchange gains for the six months ended June 30, 2020 were primarily due to increased volatility in foreign exchange markets associated the COVID-19 pandemic and the resulting impact on non-U.S. dollar denominated investments and technical balances.

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Income Taxes:
Three Months Ended June 30: For the three months ended June 30, 2020 income tax expense was $11.8 million compared to $7.4 million for the three months ended June 30, 2019, an increase of $4.4 million, which was primarily due to higher earnings before income taxes in the current period.
Six Months Ended June 30: For the six months ended June 30, 2020 and 2019, income tax expenses were $9.0 million and $10.1 million, respectively, a decrease of $1.1 million, which was primarily due to lower earnings before income taxes in the current period.

Earnings (Losses) from Equity Method Investments:
Three Months Ended June 30: For the three months ended June 30, 2020 and 2019, earnings (losses) from equity method investments were $(8.8) million and $18.1 million, respectively, a decrease of $26.9 million. The decrease was primarily due to the loss recognized on our equity method investment in Enhanzed Re in the current period, which is reported quarterly in arrears.
Six Months Ended June 30: For the six months ended June 30, 2020 and 2019, earnings from equity method investments were $3.7 million and $26.7 million, respectively, a decrease of $23.0 million. The decrease was primarily due to the loss recognized on our equity method investment in Monument and a reduction in gains recognized on our equity method investment in Enhanzed Re in the current period.

Noncontrolling Interest:
Three and Six Months Ended June 30: The net (earnings) loss attributable to the noncontrolling interest of our Non-life Run-off segment were $0.9 million and $(2.3) million for the three months ended June 30, 2020 and 2019, respectively, and $3.0 million and $(4.9) million for the six months ended June 30, 2020 and 2019, respectively. The changes of $3.2 million for the three months ended June 30, 2020 and $7.9 million for the six months ended June 30, 2020 were due to losses made in the current periods for those companies where there is a noncontrolling interest, compared to earnings generated by those companies in the prior periods.
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Atrium Segment
The Atrium segment includes Atrium 5 Ltd. ("Atrium 5"), Atrium Underwriters Limited ("AUL") and Northshore Holdings Limited. Atrium 5 results represent its proportionate share of the results of Syndicate 609 for which it provides 25% of the underwriting capacity and capital. AUL results largely represent fees charged to Syndicate 609 and a 20% profit commission on the results of the syndicate less salaries and general and administrative expenses incurred in managing the syndicate. AUL also includes other Atrium Group non-syndicate fee income and associated expenses. Northshore Holdings Limited results include the amortization of intangible assets that were fair valued upon acquisition.
The following is a discussion and analysis of the results of operations for our Atrium segment.
Three Months EndedSix Months Ended
June 30,June 30,
20202019Change20202019Change
(in thousands of U.S. dollars)
Gross premiums written$48,631  $43,788  $4,843  $106,468  $97,773  $8,695  
Net premiums written$40,892  $36,962  $3,930  $89,590  $83,461  $6,129  
Net premiums earned$43,387  $38,199  $5,188  $85,757  $76,952  $8,805  
Net incurred losses and LAE(15,592) (13,048) (2,544) (44,008) (30,262) (13,746) 
Acquisition costs(14,609) (12,815) (1,794) (28,993) (26,557) (2,436) 
Operating expenses(2,872) (3,193) 321  (5,749) (6,226) 477  
Underwriting income10,314  9,143  1,171  7,007  13,907  (6,900) 
Net investment income1,079  2,053  (974) 2,604  3,764  (1,160) 
Net realized and unrealized gains (1)
7,567  1,969  5,598  1,859  4,882  (3,023) 
Fees and commission income6,044  1,533  4,511  8,587  3,382  5,205  
Other income (expense)(2) 35  (37) 33  71  (38) 
Corporate expenses(5,272) (3,502) (1,770) (8,410) (7,290) (1,120) 
Net foreign exchange gains (losses)973  98  875  (1,160) 923  (2,083) 
EARNINGS BEFORE INCOME TAXES20,703  11,329  9,374  10,520  19,639  (9,119) 
Income tax expense(1,536) (1,023) (513) (783) (1,708) 925  
NET EARNINGS19,167  10,306  8,861  9,737  17,931  (8,194) 
Net earnings attributable to noncontrolling interest(7,896) (4,227) (3,669) (4,028) (7,355) 3,327  
NET EARNINGS ATTRIBUTABLE TO ENSTAR ORDINARY SHAREHOLDERS$11,271  $6,079  $5,192  $5,709  $10,576  $(4,867) 
Underwriting ratios(2):
Loss ratio35.9 %34.2 %1.7 %51.3 %39.3 %12.0 %
Acquisition cost ratio33.7 %33.5 %0.2 %33.8 %34.5 %(0.7)%
Operating expense ratio6.6 %8.4 %(1.8)%6.7 %8.1 %(1.4)%
Combined ratio76.2 %76.1 %0.1 %91.8 %81.9 %9.9 %
(1) For the Atrium segment, we utilize trading accounting, where unrealized amounts are reflected in earnings.
(2) Refer to "Underwriting Ratios" for a description of how these ratios are calculated.

Overall Results
Three Months Ended June 30: Net earnings were $11.3 million for the three months ended June 30, 2020 compared to net earnings of $6.1 million for the three months ended June 30, 2019, an increase of $5.2 million. The increase in net earnings was primarily due to higher net realized and unrealized gains, driven by narrowing credit spreads, and fees and commission income in the current period. The combined ratio for the three months ended June 30, 2020 was 76.2%, compared to 76.1% for the prior period. Excluding the impact of losses related to the COVID-19 pandemic, the combined ratio for the three months ended June 30, 2020 was 66.4%.

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Six Months Ended June 30: Net earnings were $5.7 million for the six months ended June 30, 2020 compared to $10.6 million for the six months ended June 30, 2019, a decrease of $4.9 million. The decrease in net earnings was primarily due to a higher loss ratio and a lower investment return, both of which were largely driven by the COVID-19 pandemic, partially offset by higher fees and commission income in the current period. The combined ratio for the six months ended June 30, 2020 was 91.8% compared to 81.9% for the prior period. Excluding the impact of the COVID-19 pandemic, the combined ratio for the six months ended June 30, 2020 was 76.9%.

An analysis of the components of the segment's net earnings before the attribution of net earnings to noncontrolling interest is shown below. Investment results are separately discussed below in "Investments Results - Consolidated."

Gross Premiums Written:
The following table provides gross premiums written by line of business for the Atrium segment:
Three Months EndedSix Months Ended
June 30,June 30,
20202019Change20202019Change
 (in thousands of U.S. dollars)
Marine, Aviation and Transit$13,494  $10,656  $2,838  $29,388  $23,670  $5,718  
Binding Authorities22,113  17,073  5,040  42,401  35,648  6,753  
Reinsurance3,487  3,429  58  11,041  11,904  (863) 
Accident and Health1,454  4,537  (3,083) 9,638  13,749  (4,111) 
Non-Marine Direct and Facultative8,083  8,093  (10) 14,000  12,802  1,198  
Total$48,631  $43,788  $4,843  $106,468  $97,773  $8,695  

Three and Six Months Ended June 30: Gross premiums written for the Atrium segment were $48.6 million and $43.8 million for the three months ended June 30, 2020 and 2019, respectively. Gross premiums written for the Atrium segment were $106.5 million and $97.8 million for the six months ended June 30, 2020 and 2019, respectively. The increase in gross premiums written for the three and six months ended June 30, 2020 was seen predominantly across the binding authorities and marine, aviation and transit lines of business. The binding authorities line of business benefited from new opportunities to write new business, while the marine, aviation and transit line of business continues to benefit from an increase in rates. The reduction in the accident and health line of business was largely driven by the impact of the COVID-19 pandemic as well as underwriting actions to not renew certain contracts in the current period.
Net Premiums Earned:
The following table provides net premiums earned by line of business for the Atrium segment:
Three Months EndedSix Months Ended
June 30,June 30,
20202019Change20202019Change
 (in thousands of U.S. dollars)
Marine, Aviation and Transit$10,783  $7,379  $3,404  $20,976  $15,778  $5,198  
Binding Authorities19,219  16,225  2,994  38,414  35,420  2,994  
Reinsurance3,367  3,598  (231) 6,392  6,662  (270) 
Accident and Health4,229  6,005  (1,776) 8,375  9,924  (1,549) 
Non-Marine Direct and Facultative5,789  4,992  797  11,600  9,168  2,432  
Total$43,387  $38,199  $5,188  $85,757  $76,952  $8,805  

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Three and Six Months Ended June 30: Net premiums earned for the Atrium segment were $43.4 million and $38.2 million for the three months ended June 30, 2020 and 2019, respectively. Net premiums earned for the Atrium segment were $85.8 million and $77.0 million for the six months ended June 30, 2020 and 2019, respectively. The increase in net premiums earned for the three and six months ended June 30, 2020 was primarily due to ongoing growth in the marine, aviation and transit, binding authorities and non-marine direct and facultative lines of business.

Net Incurred Losses and LAE:
The following table shows the components of net incurred losses and LAE for the Atrium segment:
Three Months Ended June 30,
 20202019
 Prior
Periods
Current
Period
TotalPrior
Periods
Current
Period
Total
 (in thousands of U.S. dollars)
Net losses paid$9,217  $5,002  $14,219  $10,526  $7,251  $17,777  
Net change in case and LAE reserves (1)
(4,191) 4,986  795  (3,830) 4,089  259  
Net change in IBNR reserves (2)
(8,344) 9,054  710  (11,320) 6,519  (4,801) 
Increase (reduction) in estimates of net ultimate losses(3,318) 19,042  15,724  (4,624) 17,859  13,235  
Amortization of fair value adjustments(132) —  (132) (187) —  (187) 
Net incurred losses and LAE$(3,450) $19,042  $15,592  $(4,811) $17,859  $13,048  
(1) Net change in case and LAE reserves comprises the movement during the period in specific case reserve liabilities as a result of claims settlements or changes advised to us by our policyholders and attorneys, less changes in case reserves recoverable advised by us to our reinsurers as a result of the settlement or movement of assumed claims.
(2) Net change in IBNR reserves represents the gross change in our actuarial estimates of IBNR reserves, less amounts recoverable.

Three Months Ended June 30: Net incurred losses and LAE for the three months ended June 30, 2020 and 2019 were $15.6 million and $13.0 million, respectively. Net favorable prior period loss development was $3.5 million for the three months ended June 30, 2020 compared to $4.8 million for the three months ended June 30, 2019. The current period net favorable prior period loss development was driven by favorable development across several lines of business, notably the non-marine direct and facultative line. Excluding prior period loss development, net incurred losses and LAE for the three months ended June 30, 2020 were $19.0 million and included $4.3 million of losses related to the COVID-19 pandemic. Excluding prior period loss development, net incurred losses and LAE for the three months ended June 30, 2019 were $17.9 million. The loss ratios were 35.9% and 34.2% for the three months ended June 30, 2020 and 2019, respectively. Excluding the impact of losses related to the COVID-19 pandemic, the loss ratio for the three months ended June 30, 2020 was 26.1%.
For the three months ended June 30, 2020, net incurred losses and LAE for the Atrium segment included $4.3 million of losses related to the COVID-19 pandemic, with Enstar's share totaling $2.5 million, as follows:
Three Months Ended June 30, 2020
Atrium Net (25% of S609)Noncontrolling Interests' ShareEnstar's share of Atrium
(in thousands of U.S. dollars)
Marine, Aviation and Transit$114  $(47) $67  
Binding Authorities889  (364) 525  
Reinsurance606  (248) 358  
Accident and Health2,038  (836) 1,202  
Non-Marine Direct and Facultative615  (252) 363  
COVID-19 net incurred losses and LAE$4,262  $(1,747) $2,515  

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The following table shows the components of net incurred losses and LAE for the Atrium segment for the six months ended June 30, 2020 and 2019:
Six Months Ended June 30,
 20202019
 Prior
Periods
Current
Period
TotalPrior
Periods
Current
Period
Total
 (in thousands of U.S. dollars)
Net losses paid$21,940  $9,287  $31,227  $24,946  $15,144  $40,090  
Net change in case and LAE reserves (1)
(7,225) 8,159  934  (10,172) 10,018  (154) 
Net change in IBNR reserves (2)
(17,659) 29,500  11,841  (21,552) 10,934  (10,618) 
Increase (reduction) in estimates of net ultimate losses(2,944) 46,946  44,002  (6,778) 36,096  29,318  
Amortization of fair value adjustments —   944  —  944  
Net incurred losses and LAE$(2,938) $46,946  $44,008  $(5,834) $36,096  $30,262  
(1) Net change in case and LAE reserves comprises the movement during the period in specific case reserve liabilities as a result of claims settlements or changes advised to us by our policyholders and attorneys, less changes in case reserves recoverable advised by us to our reinsurers as a result of the settlement or movement of assumed claims.
(2) Net change in IBNR reserves represents the gross change in our actuarial estimates of IBNR reserves, less amounts recoverable.

Six Months Ended June 30: Net incurred losses and LAE for the six months ended June 30, 2020 and 2019 were $44.0 million and $30.3 million, respectively. Net favorable prior year loss development was $2.9 million and $5.8 million for the six months ended June 30, 2020 and 2019, respectively. The current period net favorable prior period loss development was driven by favorable development across several lines of business, notably the non-marine direct and facultative line. Excluding prior period loss development, net incurred losses and LAE for the six months ended June 30, 2020 were $46.9 million and included $12.8 million of losses related to the COVID-19 pandemic. Excluding prior period loss development, net incurred losses and LAE for the three months ended June 30, 2019 were $36.1 million. The loss ratios were 51.3% and 39.3% for the six months ended June 30, 2020 and 2019, respectively. Excluding the impact of losses related to the COVID-19 pandemic, the loss ratio for the six months ended June 30, 2020 was 36.3%.
For the six months ended June 30, 2020, net incurred losses and LAE for the Atrium segment included $12.8 million of losses related to the COVID-19 pandemic, with Enstar's share totaling $7.6 million, as follows:
Six months ended June 30, 2020
Atrium Net (25% of S609)Noncontrolling Interests' ShareEnstar's share of Atrium
(in thousands of U.S. dollars)
Marine, Aviation and Transit$276  $(113) $163  
Binding Authorities889  (364) 525  
Reinsurance606  (248) 358  
Accident and Health8,984  (3,683) 5,301  
Non-Marine Direct and Facultative2,085  (855) 1,230  
COVID-19 net incurred losses and LAE$12,840  $(5,263) $7,576  


Acquisition Costs:
Three and Six Months Ended June 30: Acquisition costs were $14.6 million and $12.8 million for the three months ended June 30, 2020 and 2019, respectively, and $29.0 million and $26.6 million for the six months ended June 30, 2020 and 2019, respectively. The acquisition cost ratios were 33.7% and 33.5% for the three months ended June 30, 2020 and 2019, respectively, and 33.8% and 34.5% for the six months ended June 30, 2020 and 2019, respectively. The reduction in the acquisition cost ratio for the six months ended June 30, 2020 was primarily due to agreed reductions in brokerage rates for certain accounts.
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Operating Expenses:
Three and Six Months Ended June 30: Operating expenses for the Atrium segment were $2.9 million and $3.2 million for the three months ended June 30, 2020 and 2019, respectively, and $5.7 million and $6.2 million for the six months ended June 30, 2020 and 2019, respectively. The operating expense ratios were 6.6% and 8.4% for the three months ended June 30, 2020 and 2019, respectively, and 6.7% and 8.1% for the six months ended June 30, 2020 and 2019, respectively. The decrease was driven primarily by the increase in net premiums earned in the current periods.

Fees and Commission Income:
Three and Six Months Ended June 30: Fees and commission income was $6.0 million and $1.5 million for the three months ended June 30, 2020 and 2019, respectively, and $8.6 million and $3.4 million for the six months ended June 30, 2020 and 2019, respectively. The fees represent profit commission fees earned in relation to AUL’s management of Syndicate 609 and other underwriting consortiums. The increase was primarily due to higher profit commissions from Syndicate 609 and the space consortium in the current periods.

Corporate Expenses:
Three and Six Months Ended June 30: Corporate expenses for the Atrium segment were $5.3 million and $3.5 million for the three months ended June 30, 2020 and 2019, respectively, and $8.4 million and $7.3 million for the six months ended June 30, 2020 and 2019, respectively. The increase in corporate expenses was primarily due to higher variable compensation costs in the three and six months ended June 30, 2020 due to improved performance in the Atrium segment for the three months ended June 30, 2020.

Noncontrolling Interest:
Three and Six Months Ended June 30: The net earnings attributable to the noncontrolling interest in the Atrium segment were $7.9 million for the three months ended June 30, 2020, compared to net earnings attributable to the noncontrolling interest of $4.2 million for the three months ended June 30, 2019. The net earnings attributable to the noncontrolling interest in the Atrium segment were $4.0 million and $7.4 million for the six months ended June 30, 2020 and 2019, respectively. The increase in the net earnings attributable to the noncontrolling interest for the three months ended June 30, 2020 was primarily due to higher earnings whereas the decrease in the net earnings attributable to the noncontrolling interest for the six months ended June 30, 2020 was primarily due to lower earnings, as discussed above.
As of June 30, 2020 and December 31, 2019, Trident and Dowling had a combined 41.0% noncontrolling interest in the Atrium segment.

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StarStone Segment
The results of the StarStone segment include the results of StarStone Specialty Holdings Limited and subsidiaries ("StarStone Group") and intra-group reinsurance cessions, which are eliminated upon consolidation. In partnership with StarStone's other shareholders, we have previously completed a number of transactions to provide strategic and capital support to StarStone in the form of capital contributions and reinsurance. Refer to Note 3 - "Acquisitions" and Note 21 - "Related Party Transactions" to the consolidated financial statements contained in our Annual Report on Form 10-K for the year ended December 31, 2019 for further information.
Recent Strategic Developments
During the second quarter of 2020, we completed a strategic review of the StarStone segment to reassess the strategies and opportunities. Following this review, we have taken action to position StarStone U.S. and Enstar for improved profitability going forward, as further described below.
Recapitalization of StarStone U.S.
On June 10, 2020, we announced an agreement to recapitalize StarStone U.S. and appoint a new management team and Board. As part of the recapitalization, we entered into a definitive agreement to sell StarStone U.S. to Core Specialty, a newly formed entity with equity backing from funds managed by SkyKnight Capital, L.P., Dragoneer Investment Group and Aquiline Capital Partners LLC. We currently have a 59.0% interest in StarStone U.S. The purchase price will be based on a $30.0 million premium to the GAAP tangible book value of StarStone U.S. to be determined on the month end prior to the closing date and will consist of $235.0 million of common shares of Core Specialty and cash. The $235.0 million of common shares of Core Specialty is expected to represent an estimated 26.1% interest in Core Specialty after certain co-investments and management equity awards. Our investment in Core Specialty will be accounted for as an equity method investment.
In connection with the sale, one of our Non-life Run-off subsidiaries will enter into a loss portfolio transfer reinsurance agreement with StarStone U.S. pursuant to which we will reinsure all of the net loss reserves of StarStone U.S. in respect of premium earned prior to the calendar month end prior to the closing date. We will receive a reinsurance premium equal to the assumed reserves, plus approximately $16.0 million. The reinsurance agreement will contain an aggregate limit on our liability equal to $130.0 million in excess of the assumed reserves, and our subsidiary's obligations under the reinsurance agreement will be guaranteed by Enstar.
The closing of the transaction is subject to regulatory approvals and other closing conditions and is expected to occur in the second half of 2020.
Run-off of StarStone International (non-U.S.)
On June 10, 2020, we also announced that we are placing StarStone International into an orderly run-off. StarStone International has contributed renewal rights to Syndicate 609, which is managed by AUL and which is part of our Atrium segment. As a result, Atrium expects to write new business of approximately $20.0-$40.0 million in Syndicate 609, for which it provides 25% of the underwriting capacity and capital, primarily in the Marine, Energy and Terrorism lines of business.
The liabilities associated with the StarStone International Run-Off vary in duration, and the run-off is expected to occur over a number of years. For further information on the expected liability payout pattern, refer to the contractual obligations table in the liquidity and capital resources section included within Item 2 of this Quarterly Report on Form 10-Q. Steps to reduce the size of StarStone International's operations have begun and will involve several phases to occur over time. As a result, we cannot anticipate with certainty the expected completion date of the StarStone International Run-Off.
We continue to evaluate additional strategic options for StarStone International's operations and business. Consequently, such options could have the effect of mitigating costs associated with placing the business into run-off.
The remaining StarStone International operations will continue to serve the needs of policyholders and ensure that the companies continue to meet all regulatory requirements.
For further information, refer to Note 4 - "Divestitures, Held-for-Sale Businesses and Discontinued Operations" to our unaudited condensed consolidated financial statements included within Item 1 of this Quarterly Report on Form 10-Q.
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Discussion of Results of Operations
The following is a discussion and analysis of the results of operations for our StarStone segment. Given the impact of the strategic developments in the segment, we have updated the layout of the following tables. In previous reports, we had distinguished the results of sub-components of the segment between StarStone Group and Intra-group reinsurances, and between core and exited lines of business, which is no longer considered to be as meaningful. The table below provides the results from continuing operations (StarStone International Run-off) and Discontinued Operations (StarStone U.S.). Current and prior period results are not indicative of future results.
Three Months EndedSix Months Ended
June 30,June 30,
20202019Change20202019Change
(in thousands of U.S. dollars)(in thousands of U.S. dollars)
Gross premiums written$86,087  $108,902  $(22,815) $241,569  $252,766  $(11,197) 
Net premiums written$76,922  $103,407  $(26,485) $183,728  $215,063  $(31,335) 
Net premiums earned$82,836  $98,322  $(15,486) $180,450  $228,244  $(47,794) 
Net incurred losses and LAE(74,433) (119,289) 44,856  (148,869) (258,236) 109,367  
Acquisition costs(30,749) (21,609) (9,140) (55,418) (57,281) 1,863  
Operating expenses(26,476) (16,509) (9,967) (45,945) (38,692) (7,253) 
Underwriting income (loss)(48,822) (59,085) 10,263  (69,782) (125,965) 56,183  
Net investment income7,101  8,807  (1,706) 15,327  17,704  (2,377) 
Net realized and unrealized gains (1)
33,547  12,613  20,934  (15,124) 25,240  (40,364) 
Fees and commission expense—  (161) 161  —  (365) 365  
Other income32  314  (282) 117  373  (256) 
Corporate expenses(35,442) —  (35,442) (36,016) —  (36,016) 
Interest expense(654) —  (654) (1,101) (475) (626) 
Net foreign exchange losses(4,167) (1,244) (2,923) (4,748) (1,835) (2,913) 
EARNINGS (LOSS) BEFORE INCOME TAXES(48,405) (38,756) (9,649) (111,327) (85,323) (26,004) 
Income tax benefit (expense)(3,304) 724  (4,028) (1,592) 112  (1,704) 
Loss from equity method investments—  (406) 406  —  (218) 218  
NET EARNINGS (LOSS) FROM CONTINUING OPERATIONS(51,709) (38,438) (13,271) (112,919) (85,429) (27,490) 
NET EARNINGS (LOSS) FROM DISCONTINUED OPERATIONS, NET OF INCOME TAXES(1,152) (3,943) 2,791  (3,221) 4,125  (7,346) 
NET EARNINGS (LOSS)(52,861) (42,381) (10,480) (116,140) (81,304) (34,836) 
Net loss attributable to noncontrolling interest26,952  9,206  17,746  53,719  17,128  36,591  
NET EARNINGS (LOSS) ATTRIBUTABLE TO ENSTAR ORDINARY SHAREHOLDERS$(25,909) $(33,175) $7,266  $(62,421) $(64,176) $1,755  
Underwriting ratios(2):
Loss ratio
89.9 %121.3 %(31.4)%82.5 %113.1 %(30.6)%
Acquisition cost ratio37.1 %22.0 %15.1 %30.7 %25.1 %5.6 %
Operating expense ratio31.9 %16.8 %15.1 %25.5 %17.0 %8.5 %
Combined ratio158.9 %160.1 %(1.2)%138.7 %155.2 %(16.5)%
(1) We have historically utilized trading accounting, where unrealized amounts are reflected in earnings. However, from October 1, 2019, we have elected to use AFS accounting and, where permissible, as trading fixed income securities mature, we are reinvesting the proceeds into AFS securities for the StarStone segment.
(2) Refer to "Underwriting Ratios" for a description of how these ratios are calculated.

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Overall Results
Three Months Ended June 30: Net losses for the StarStone segment were $25.9 million for the three months ended June 30, 2020 compared $33.2 million for the three months ended June 30, 2019, a decrease in net losses of $7.3 million. The decrease in net losses was primarily due to net realized and unrealized gains on our investment portfolio of $33.5 million in the current period, driven by narrowing credit spreads in the current period, and lower underwriting losses.
The investment gains and improved underwriting results were offset by exit costs associated with the StarStone International Run-Off of $42.5 million in the current period. The following table summarizes the financial impact of the exit costs associated with the StarStone International Run-Off, recorded in the second quarter of 2020:
Three Months Ended
June 30, 2020
Description:Results of Operations Line Item:(in millions of U.S. dollars)
Provision for unallocated LAE (run-off basis)Net incurred losses and LAE$(28.1) 
Goodwill impairmentCorporate expenses(8.0) 
Provision for employee severance-related costsCorporate expenses(8.0) 
Capitalized software write-downCorporate expenses(7.6) 
Earnings acceleration of prepaid reinsurance premiumsNet premiums earned(4.1) 
Intangible asset impairmentCorporate expenses(4.0) 
Other asset write-downsCorporate expenses(2.9) 
Operating leases right-of-use asset write-downCorporate expenses(3.5) 
Valuation allowance on deferred tax assetsIncome tax expense(2.3) 
Sub-totalNet loss(68.5) 
Redeemable non-controlling interestNet loss attributable to noncontrolling interest26.0  
Total reduction in StarStone net earnings attributable to the StarStone International Run-Off Net loss attributable to Enstar ordinary shareholders$(42.5) 

Net underwriting losses for the StarStone segment were $48.8 million for the three months ended June 30, 2020 and included exit costs associated with the StarStone International Run-Off of $32.4 million. The StarStone segment combined ratio was 158.9% for the three months ended June 30, 2020 as compared to 160.1% for the three months ended June 30, 2019. Excluding the impact of exit costs, the combined ratio for the three months ended was 118.9% and included net underwriting losses related to the COVID-19 pandemic of $15.3 million.
For the three months ended June 30, 2020, the StarStone segment included $15.3 million of net underwriting losses related to the COVID-19 pandemic, with Enstar's share totaling $9.7 million, as follows:
Three Months Ended June 30, 2020
StarStone Segment Noncontrolling Interests' ShareEnstar's share of StarStone Segment
(in thousands of U.S. dollars)
StarStone International (1)
$15,274  $(5,570) $9,704  
StarStone U.S. (Discontinued Operations)—  —  —  
Total StarStone Segment COVID-19 net underwriting losses$15,274  $(5,570) $9,704  
(1) Includes the impact of outwards reinstatement premiums of $2.0 million and the premium deficiency provision of $16.3 million for the three months ended June 30, 2020.

Six Months Ended June 30: Net losses for the StarStone segment were $62.4 million for the six months ended June 30, 2020 compared to $64.2 million for the six months ended June 30, 2019, a decrease in net losses of $1.8 million. The decrease in net losses was primarily driven by a reduction in underwriting losses, partially offset by exit costs associated with the StarStone International Run-Off of $42.5 million and net realized and unrealized losses of $15.1 million in the period, driven by the impact of the COVID-19 pandemic on global financial markets.
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Net underwriting losses for the StarStone segment were $69.8 million for the six months ended June 30, 2020 and included exit costs associated with the StarStone International Run-Off of $32.4 million. The StarStone segment combined ratio was 138.7% for the six months ended June 30, 2020 as compared to 155.2% for the six months ended June 30, 2019. Excluding the impact of exit costs, the combined ratio for the six months ended was 120.3% and included net underwriting losses related to the COVID-19 pandemic of $39.8 million.
For the six months ended June 30, 2020, the StarStone segment included $47.3 million of net underwriting losses related to the COVID-19 pandemic, with Enstar's share totaling $31.9 million, as follows:
Six Months Ended June 30, 2020
StarStone SegmentNoncontrolling Interests' ShareEnstar's share of StarStone Segment
(in thousands of U.S. dollars)
StarStone International (1)
$39,824  $(12,355) $27,469  
StarStone U.S. (Discontinued Operations)7,500  (3,075) 4,425  
Total StarStone Segment COVID-19 net underwriting losses$47,324  $(15,430) $31,894  
(1) Includes the impact of outwards reinstatement premiums of $2.0 million and the premium deficiency provision of $16.3 million for the six months ended June 30, 2020.
An analysis of the components of the segment's net earnings before the attribution of net earnings to noncontrolling interest is shown below. Investment results are separately discussed below in "Investments Results - Consolidated."

Underwriting Impact of Exit Costs
The underwriting impact of the exit costs relating to net premiums earned and net incurred losses and LAE as shown in the table above, are summarized in the following table:
Three Months EndedSix Months Ended
June 30,June 30,
20202020
Subtotal Before Exit CostsExit CostsTotalSubtotal Before Exit CostsExit CostsTotal
ABC=A+BDEF=D+E
(in thousands of U.S. dollars)
Net premiums earned$86,982  $(4,146) $82,836  $184,596  $(4,146) $180,450  
Net incurred losses and LAE(46,320) (28,113) (74,433) (120,756) (28,113) (148,869) 
Acquisition costs(30,749) —  (30,749) (55,418) —  (55,418) 
Operating expenses(26,376) (100) (26,476) (45,845) (100) (45,945) 
Underwriting income (loss)(16,463) (32,359) (48,822) (37,423) (32,359) (69,782) 
Underwriting ratios(1):
Loss ratio53.3 %89.9 %65.4 %82.5 %
Acquisition cost ratio35.4 %37.1 %30.0 %30.7 %
Operating expense ratio30.2 %31.9 %24.9 %25.5 %
Combined ratio118.9 %158.9 %120.3 %138.7 %
(1) Refer to "Underwriting Ratios" for a description of how these ratios are calculated.
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Gross Premiums Written:
The following table provides gross premiums written by line of business for the StarStone segment:
Three Months EndedSix Months Ended
June 30,June 30,
 20202019Change20202019Change
 (in thousands of U.S. dollars)
Casualty$11,112  $19,565  $(8,453) $55,842  $52,643  $3,199  
Marine39,433  45,449  (6,016) 108,358  127,958  (19,600) 
Property35,869  28,7477,122  59,359  50,914  8,445  
Aerospace(1,830) 15,141  (16,971) 16,507  21,251  (4,744) 
Workers' Compensation1,503  —  1,503  1,503  —  1,503  
Total$86,087  $108,902  $(22,815) $241,569  $252,766  $(11,197) 

Three Months Ended June 30: Gross premiums written for the StarStone segment were $86.1 million and $108.9 million for the three months ended June 30, 2020 and 2019, respectively, a decrease of $22.8 million. The decrease in the aerospace lines of business of $17.0 million was driven primarily by underwriting restrictions put in place as a result of COVID-19. The decrease in the marine lines of business of $6.0 million was due to our strategy to exit certain lines of business and underwriting restrictions put in place as a result of COVID-19. The decrease in the casualty lines of business of $8.5 million was due to a policy cancellation as a result of the StarStone International Run-Off, partially offset by new business underwritten through our European platform before we began to implement the StarStone International Run-Off. The increase in the property lines of business of $7.1 million was due to new property programs and rate improvements across all property lines.

Six Months Ended June 30: Gross premiums written were $241.6 million and $252.8 million for the six months ended June 30, 2020 and 2019, respectively, a decrease of $11.2 million. The decrease of $19.6 million in the marine lines of business was due to our strategy to exit certain lines and underwriting restrictions put in place as a result of COVID-19. The decrease in the aerospace lines of $4.7 million was driven by underwriting restrictions put in place as a result of COVID-19 in the three months ended June 30, 2020, partially offset by a new proportional quota share arrangement underwritten in the three months ended March 31, 2020. The increase in the property lines of $8.4 million was due to new property programs and rate improvements across all property lines. The increase of $3.2 million in the casualty lines of business was mainly due to new business opportunities underwritten and improving rates, partly offset by a policy cancellation.
In light of the decision to implement the StarStone International Run-off, we expect gross premiums written to decline materially in future periods.

Net Premiums Earned:
        The following table provides net premiums earned by line of business for the StarStone segment: 
Three Months EndedSix Months Ended
June 30,June 30,
 20202019Change20202019Change
 (in thousands of U.S. dollars)
Casualty$19,644  $17,896  $1,748  $45,948  $44,419  $1,529  
Marine32,531  49,306  (16,775) 73,592  100,795  (27,203) 
Property22,958  20,851  2,107  44,570  59,476  (14,906) 
Aerospace6,860  11,484  (4,624) 14,479  24,664  (10,185) 
Workers' Compensation843  (1,215) 2,058  1,861  (1,110) 2,971  
Total$82,836  $98,322  $(15,486) $180,450  $228,244  $(47,794) 

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Three Months Ended June 30: Net premiums earned for the StarStone segment were $82.8 million and $98.3 million for the three months ended June 30, 2020 and 2019, respectively, a decrease of $15.5 million. The decrease in net premiums earned was mainly due to our strategy to exit certain lines of business and a policy cancellation.

Six Months Ended June 30: Net premiums earned for the StarStone segment were $180.5 million and $228.2 million for the six months ended June 30, 2020 and 2019, respectively, a decrease of $47.8 million. The decrease in net premiums earned was mainly due to our strategy to exit certain lines of business and to a lesser extent, underwriting restrictions related to COVID-19 and a policy cancellation.
As noted above with respect to gross premiums written, in light of the decision to implement the StarStone International Run-off, we expect net premiums earned to decline materially in future periods.

Net Incurred Losses and LAE:
The following table shows the components of net incurred losses and LAE for the StarStone segment:
Three Months Ended June 30,
 20202019
 Prior
Periods
Current
Period
TotalPrior
Periods
Current
Period
Total
 (in thousands of U.S. dollars)
Net losses paid$74,532  $6,135  $80,667  $89,425  $15,072  $104,497  
Net change in case and LAE reserves (1)
(25,402) (5,362) (30,764) 2,648  35,440  38,088  
Net change in IBNR reserves (2)
(62,212) 58,889  (3,323) (56,130) 32,332  (23,798) 
Increase (reduction) in estimates of net ultimate losses(13,082) 59,662  46,580  35,943  82,844  118,787  
Increase (reduction) in provisions for unallocated LAE274  27,611  27,885  727  (187) 540  
Amortization of fair value adjustments(32) —  (32) (38) —  (38) 
Net incurred losses and LAE$(12,840) $87,273  $74,433  $36,632  $82,657  $119,289  
(1) Net change in case and LAE reserves comprises the movement during the period in specific case reserve liabilities as a result of claims settlements or changes advised to us by our policyholders and attorneys, less changes in case reserves recoverable advised by us to our reinsurers as a result of the settlement or movement of assumed claims.
(2) Net change in IBNR reserves represents the gross change in our actuarial estimates of IBNR reserves, less amounts recoverable.
Three Months Ended June 30: Net incurred losses and LAE for the three months ended June 30, 2020 and 2019 were $74.4 million and $119.3 million, respectively. Net favorable prior period loss development was $12.8 million for the three months ended June 30, 2020 compared to net unfavorable prior period loss development of $36.6 million for the three months ended June 30, 2019. Net favorable prior period loss development for the three months ended June 30, 2020 was driven by favorable run-off in the casualty lines of business. Net adverse prior period loss development for the three months ended June 30, 2019 was primarily related to development on lines of business that we had either exited or were subject to remediation as part of our underwriting repositioning initiatives prior to implementing the StarStone International Run-off. Excluding prior period net loss development, net incurred losses and LAE for the three months ended June 30, 2020 were $87.3 million and included $28.1 million of exit costs associated with the StarStone International Run-Off and a reduction in net incurred losses and LAE related to the COVID-19 pandemic of $3.1 million. Excluding prior period net loss development, net incurred losses and LAE for the three months ended June 30, 2019 were $82.7 million. The loss ratios for the StarStone segment were 89.9% and 121.3% for the three months ended June 30, 2020 and 2019, respectively. Excluding the impact of exit costs associated with the StarStone International Run-Off, the loss ratio for the three months ended June 30, 2020 was 53.3%.
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For the three months ended June 30, 2020, the StarStone segment included a reduction in net incurred losses and LAE related to the COVID-19 pandemic of $3.1 million, with Enstar's share totaling $1.6 million, as follows:
Three Months Ended June 30, 2020
StarStone InternationalNoncontrolling Interests' ShareEnstar's share of StarStone International
(in thousands of U.S. dollars)
Casualty$(900) $369  $(531) 
Marine500  (205) 295  
Property200  123  323  
Aerospace(2,900) 1,189  (1,711) 
COVID-19 net incurred losses and LAE$(3,100) $1,476  $(1,624) 

The following table shows the components of net incurred losses and LAE for the StarStone segment for the six months ended June 30, 2020 and 2019:
Six Months Ended June 30,
 20202019
 Prior
Periods
Current
Period
TotalPrior
Periods
Current
Period
Total
 (in thousands of U.S. dollars)
Net losses paid$157,086  $4,387  $161,473  $190,446  $15,971  $206,417  
Net change in case and LAE reserves (1)
(65,730) (613) (66,343) (13,672) 45,040  31,368  
Net change in IBNR reserves (2)
(105,983) 131,594  25,611  (90,096) 109,851  19,755  
Increase (reduction) in estimates of net ultimate losses(14,627) 135,368  120,741  86,678  170,862  257,540  
Increase (reduction) in provisions for unallocated LAE183  28,312  28,495  (473) 1,400  927  
Amortization of fair value adjustments(367) —  (367) (231) —  (231) 
Net incurred losses and LAE$(14,811) $163,680  $148,869  $85,974  $172,262  $258,236  
(1) Net change in case and LAE reserves comprises the movement during the period in specific case reserve liabilities as a result of claims settlements or changes advised to us by our policyholders and attorneys, less changes in case reserves recoverable advised by us to our reinsurers as a result of the settlement or movement of assumed claims.
(2) Net change in IBNR reserves represents the gross change in our actuarial estimates of IBNR reserves, less amounts recoverable.
Six Months Ended June 30: Net incurred losses and LAE for the six months ended June 30, 2020 and 2019 were $148.9 million and $258.2 million, respectively. Net favorable prior period loss development was $14.8 million for the six months ended June 30, 2020 compared to net unfavorable prior period loss development of $86.0 million for the six months ended June 30, 2019. Net favorable prior period loss development for the six months ended June 30, 2020 was driven by favorable development in the casualty lines of business. Net unfavorable prior period loss development for the six months ended June 30, 2019 was primarily related to development on lines of business that we have either exited or had been subject to remediation as part of our underwriting repositioning initiatives before our decision to place StarStone International into run-off. Excluding prior period loss development, net incurred losses and LAE for the six months ended June 30, 2020 were $163.7 million and included $28.1 million of exit costs associated with the StarStone International Run-Off and $21.5 million related to the COVID-19 pandemic. Excluding prior period loss development, net incurred losses and LAE for the six months ended June 30, 2019 were $172.3 million. The loss ratios for the StarStone segment were 82.5% and 113.1% for the six months ended June 30, 2020 and 2019, respectively. Excluding the impact of exit costs associated with the StarStone International Run-Off, the loss ratio for the six months ended June 30, 2020 was 65.4% and included COVID-19 related losses of $21.5 million.
For the six months ended June 30, 2020, StarStone segment net incurred losses and LAE included $21.5 million of losses related to the COVID-19 pandemic, with Enstar's share totaling $16.1 million, as follows:
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Six Months Ended June 30, 2020
StarStone InternationalNoncontrolling Interests' ShareEnstar's share of StarStone International
(in thousands of U.S. dollars)
Casualty$10,150  $(4,161) $5,989  
Marine5,200  (2,132) 3,068  
Property9,000  (205) 8,795  
Aerospace(2,900) 1,189  (1,711) 
COVID-19 net incurred losses and LAE$21,450  $(5,309) $16,141  


Acquisition Costs:
Three Months Ended June 30: Acquisition costs for the StarStone segment were $30.7 million and $21.6 million for the three months ended June 30, 2020 and 2019, respectively, an increase of $9.1 million. The acquisition cost ratios for the three months ended June 30, 2020 and 2019 were 37.1% and 22.0%, respectively. The increase was driven by the impact of the premium deficiency provision of $13.8 million resulting from COVID-19 underwriting losses.
Six Months Ended June 30: Acquisition costs for the StarStone segment were $55.4 million and $57.3 million for the six months ended June 30, 2020 and 2019, respectively, an decrease of $1.9 million. The acquisition cost ratios for the six months ended June 30, 2020 and 2019 were 30.7% and 25.1%, respectively. The increase was driven by the impact of the premium deficiency provision of $13.8 million resulting from COVID-19 underwriting losses.

Operating Expenses:
Three Months Ended June 30: Operating expenses for the StarStone segment for the three months ended June 30, 2020 and 2019 were $26.5 million and $16.5 million, respectively. The operating expense ratios for the three months ended June 30, 2020 and 2019 were 31.9% and 16.8%. The increase was due to lower non-direct deferred acquisition costs, resulting from the impact of the premium deficiency provision of $2.5 million caused by COVID-19 underwriting losses, and lower costs in 2019 driven by the release of the restructuring provision.

Six Months Ended June 30: Operating expenses for the StarStone segment for the six months ended June 30, 2020 and 2019 were $45.9 million and $38.7 million, respectively. The operating expense ratios for the three months ended June 30, 2020 and 2019 were 25.5% and 17.0%, respectively. The increase was primarily driven by lower non-direct deferred acquisition costs, resulting from the impact of the premium deficiency provision of $2.5 million caused by COVID-19 underwriting losses, and lower costs in 2019 driven by the release of the restructuring provision.

Corporate Expenses:
Three and Six Months Ended June 30: Corporate expenses for the StarStone segment were $35.4 million and $nil for the three months ended June 30, 2020 and 2019, respectively, and $36.0 million and $nil for the six months ended June 30, 2020 and 2019, respectively. Corporate expenses for the three and six months ended June 30, 2020, included exit costs associated with the StarStone International Run-Off of $33.8 million and are summarized above.

Income Taxes:
Three and Six Months Ended June 30: Income tax expense for the StarStone segment for the three months ended June 30, 2020 was $3.3 million compared to an income tax benefit of $0.7 million for the three months ended June 30, 2019. For the six months ended June 30, 2020, income tax expense was $1.6 million compared to an income tax benefit of $0.1 million for the six months ended June 30, 2019. The income tax benefit (expense) is generally driven by the geographical distribution of pre-tax earnings (loss) between taxable and non-taxable jurisdictions.

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Discontinued Operations (StarStone U.S.):
Three Months Ended June 30: The net earnings (loss) from discontinued operations, net of income tax benefit (expense) for the StarStone segment for the three months ended June 30, 2020 was $(1.2) million compared to $(3.9) million for the three months ended June 30, 2019. There was no further impact from COVID-19 assessed during the three months ended June 30, 2020.
The StarStone U.S. business included in discontinued operations includes the results of intra-group reinsurance cessions, which were non-renewed as of January 1, 2018. The effect of these intra-group reinsurance cessions on net earnings (loss), net of income tax benefit (expense) for the StarStone U.S. business was as follows:
Three Months Ended
June 30,
 20202019
 (in thousands of U.S. dollars)
StarStone U.S. Group before Intra-Group Cessions$8,870  $(33,357) 
Intra-Group Cessions(10,022) 29,414  
StarStone U.S. net earnings (loss), net of income tax benefit (expense)$(1,152) $(3,943) 

Six Months Ended June 30: The net earnings (loss) from discontinued operations, net of income tax benefit (expense) for the six months ended June 30, 2020 was $(3.2) million compared to $4.1 million for the six months ended June 30, 2019. For the six months ended June 30, 2020, the net earnings (loss) from discontinued operations, net of income tax benefit (expense), included $7.5 million net incurred losses and LAE related to the COVID-19 pandemic, with Enstar's share totaling $4.4 million, as follows:
Six Months Ended June 30, 2020
StarStone U.S.Noncontrolling Interests' ShareEnstar's share of StarStone U.S.
(in thousands of U.S. dollars)
Casualty$6,000  $(2,460) $3,540  
Marine1,500  (615) 885  
COVID-19 net incurred losses and LAE$7,500  $(3,075) $4,425  

As described above, the StarStone U.S. business included in discontinued operations includes the results of intra-group reinsurance cessions. The effect of these intra-group reinsurance cessions on net earnings (loss), net of income tax benefit (expense) for the StarStone U.S. business was as follows:
Six Months Ended
June 30,
 20202019
 (in thousands of U.S. dollars)
StarStone U.S. Group before Intra-Group Cessions$18,194  $(39,656) 
Intra-Group Cessions(21,415) 43,781  
StarStone U.S. net earnings (loss), net of income tax benefit (expense)$(3,221) $4,125  

Noncontrolling Interest:
Three and Six Months Ended June 30: The net losses attributable to the noncontrolling interest in the StarStone segment were $27.0 million for the three months ended June 30, 2020, compared to $9.2 million for the three months ended June 30, 2019. The net losses attributable to the noncontrolling interest in the StarStone segment were $53.7 million and $17.1 million for the six months ended June 30, 2020 and 2019, respectively. The increases in net losses attributable to the noncontrolling interest for the three and six months ended June 30, 2020 were primarily due to higher losses, primarily related to the underwriting impact of COVID-19 and the exit costs associated with the StarStone International Run-off, as discussed above.
As of June 30, 2020 and December 31, 2019, Trident and Dowling had a combined 41.0% noncontrolling interest in the StarStone Group.
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Other
Our other activities, which do not qualify as a reportable segment, include our corporate expenses, debt servicing costs, preferred share dividends, holding company income and expenses, foreign exchange and other miscellaneous items. On May 31, 2019, we completed the transfer of our remaining life assurance policies written by our wholly-owned subsidiary Alpha Insurance SA to a subsidiary of Monument.
The following is a discussion and analysis of our results of operations for our other activities, which are summarized below:
Three Months EndedSix Months Ended
June 30,June 30,
20202019Change20202019Change
(in thousands of U.S. dollars)
Net premiums earned$6,131  $5,971  $160  $9,468  $12,569  $(3,101) 
Net incurred losses and LAE(5,193) (4,465) (728) (7,675) (9,421) 1,746  
Life and annuity policy benefits—  (2,194) 2,194  —  (2,290) 2,290  
Acquisition costs(120) (145) 25  (203) (377) 174  
Underwriting income (loss)818  (833) 1,651  1,590  481  1,109  
Net investment losses(2,793) (2,446) (347) (5,281) (4,131) (1,150) 
Net realized and unrealized gains—  4,545  (4,545) —  5,579  (5,579) 
Other income (expense)1,114  759  355  (857) 971  (1,828) 
Corporate expenses(8,806) (14,530) 5,724  (24,846) (23,227) (1,619) 
Interest Income2,817  2,583  234  5,748  4,138  1,610  
Net foreign exchange gains (losses)2,641  (27) 2,668  2,641  (26) 2,667  
LOSS BEFORE INCOME TAXES(4,209) (9,949) 5,740  (21,005) (16,215) (4,790) 
Income tax expense—  —  —  —  (85) 85  
NET LOSS ATTRIBUTABLE TO ENSTAR(4,209) (9,949) 5,740  (21,005) (16,300) (4,705) 
Dividends on preferred shares(8,925) (8,925) —  (17,850) (18,064) 214  
NET LOSS ATTRIBUTABLE TO ENSTAR ORDINARY SHAREHOLDERS$(13,134) $(18,874) $5,740  $(38,855) $(34,364) $(4,491) 
Overall Results:
Three Months Ended June 30: Net losses were $13.1 million for the three months ended June 30, 2020, compared to $18.9 million for the three months ended June 30, 2019, a decrease in net losses of $5.7 million, which primarily resulted from a $5.7 million decrease in corporate expenses and an increase in foreign exchange gains of $2.7 million, partially offset by a reduction in net realized and unrealized gains of $4.5 million in the current period.

Six Months Ended June 30: Net losses were $38.9 million for the six months ended June 30, 2020, compared to net losses of $34.4 million for the six months ended June 30, 2019, an increase in net losses of $4.5 million, which primarily resulted from a reduction in net realized and unrealized gains of $5.6 million, partially offset by an increase in foreign exchange gains of $2.7 million.
Investment results are separately discussed below in "Investable Assets."

Underwriting Income:
Three and Six Months Ended June 30: Underwriting income (loss) was broadly consistent at $0.8 million compared to $(0.8) million for the three months ended June 30, 2020 and 2019, respectively, and $1.6 million and $0.5 million for the six months ended June 30, 2020 and 2019, respectively.

Corporate Expenses:
Three and Six Months Ended June 30: Corporate expenses were $8.8 million and $14.5 million for the three months ended June 30, 2020 and 2019, respectively, a decrease of $5.7 million. Corporate expenses were $24.8 million and $23.2 million for the six months ended June 30, 2020 and 2019, respectively. The decrease for the three months ended June 30, 2020 was primarily related to higher performance-related compensation in the prior period.
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Interest Income:
Three and Six Months Ended June 30: Interest income was $2.8 million and $2.6 million for the three months ended June 30, 2020 and 2019, respectively, and $5.7 million and $4.1 million for the six months ended June 30, 2020 and 2019, respectively. The increases for the three and six months ended June 30, 2020 represent the elimination of interest expense between our reportable segments.

Net Foreign Exchange Gains (Losses):
Three and Six Months Ended June 30: Net foreign exchange gains were $2.6 million for the three and six months ended June 30, 2020, compared to nominal losses for the three and six months ended June 30, 2019.

Dividends on Preferred Shares:
Three and Six Months Ended June 30: The dividends on preferred shares were $8.9 million for the three months ended June 30, 2020 and 2019, and $17.9 million and $18.1 million for the six months ended June 30, 2020 and 2019, respectively.

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Investable Assets
We define investable assets as the sum of total investments, cash and cash equivalents, restricted cash and cash equivalents and funds held. Investments consist primarily of investment grade, liquid, fixed maturity securities of short-to-medium duration, equities and other investments. Cash and cash equivalents and restricted cash and cash equivalents are comprised mainly of cash, high-grade fixed deposits, and other highly liquid instruments such as commercial paper with maturities of less than three months at the time of acquisition and money market funds. Funds held primarily consist of investment grade, liquid, fixed maturity securities of short-to-medium duration.
Investable assets were $15.6 billion as of June 30, 2020 as compared to $14.1 billion as of December 31, 2019, an increase of 10.8%. The increase was primarily due to assets acquired in relation to the Lyft, Aspen and AXA Group transactions and unrealized gains on investments.
A description of our investment strategies is included in "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations - Investments" in our Annual Report on Form 10-K for the year ended December 31, 2019.

Composition of Investable Assets By Segment
        Across all of our segments, we strive to structure our investments in a manner that recognizes our liquidity needs and in order to meet our obligation to pay losses. We consider the duration characteristics of our liabilities in determining the extent to which we correlate with assets of comparable duration depending on our other investment strategies and to the extent practicable. If our liquidity needs or general liability profile change unexpectedly, we may adjust the structure of our investment portfolio to meet our revised expectations. The following tables summarize the composition of total investable assets by segment, and for our other activities:
June 30, 2020
Non-life
Run-off
AtriumStarStoneOtherTotal
(in thousands of U.S. dollars)
Short-term investments, trading, at fair value$8,618  $1,598  $—  $—  $10,216  
Short-term investments, AFS, at fair value74,575  —  13,195  —  87,770  
Fixed maturities, trading, at fair value4,674,541  161,830  528,786  —  5,365,157  
Fixed maturities, AFS, at fair value2,017,453  11,447  186,311  —  2,215,211  
Funds held - directly managed1,168,856  —  —  —  1,168,856  
Equities, at fair value547,442  22,101  71,228  —  640,771  
Other investments, at fair value3,174,543  15,451  88,791  —  3,278,785  
Equity method investments362,398  —  —  362,398  
Total investments12,028,426  212,427  888,311  —  13,129,164  
Cash and cash equivalents (including restricted cash)664,025  50,453  268,391  5,652  988,521  
Funds held by reinsured companies1,336,299  28,320  93,808  8,169  1,466,596  
Total investable assets$14,028,750  $291,200  $1,250,510  $13,821  $15,584,281  
Duration (in years) (1)
5.332.152.084.92
Average credit rating (2)
A+AA-AA-AAAA+

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December 31, 2019
Non-life
Run-off
AtriumStarStoneOtherTotal
(in thousands of U.S. dollars)
Short-term investments, trading, at fair value$50,268  $1,222  $—  $—  $51,490  
Short-term investments, AFS, at fair value121,780  —  6,555  —  128,335  
Fixed maturities, trading, at fair value5,378,533  155,510  609,292  —  6,143,335  
Fixed maturities, AFS, at fair value1,446,912  15,310  75,830  —  1,538,052  
Funds held - directly managed1,187,552  —  —  —  1,187,552  
Equities, at fair value576,893  22,079  127,749  —  726,721  
Other investments, at fair value2,386,776  7,417  123,838  —  2,518,031  
Equity method investments326,277  —  —  —  326,277  
Total investments11,474,991  201,538  943,264  —  12,619,793  
Cash and cash equivalents (including restricted cash)666,705  58,369  241,708  4,567  971,349  
Funds held by reinsured companies336,470  27,451  103,191  8,620  475,732  
Total investable assets$12,478,166  $287,358  $1,288,163  $13,187  $14,066,874  
Duration (in years) (1)
5.241.862.074.86
Average credit rating (2)
A+AA-A+AAAA+
(1) The duration calculation includes cash and cash equivalents, short-term investments, fixed maturities and the fixed maturities within our funds held - directly managed portfolios at June 30, 2020 and December 31, 2019.
(2) The average credit ratings calculation includes cash and cash equivalents, short-term investments, fixed maturities and the fixed maturities within our funds held - directly managed portfolios at June 30, 2020 and December 31, 2019.

As of both June 30, 2020 and December 31, 2019, our investment portfolio, including funds held - directly managed, had an average credit quality rating of A+. As of June 30, 2020 and December 31, 2019, our fixed maturity investments (classified as trading and AFS and our fixed maturity investments included within funds held - directly managed) that were non-investment grade (i.e. rated lower than BBB- and non-rated securities) comprised 3.6% and 4.5% of our total fixed maturity investment portfolio, respectively. A detailed schedule of average credit ratings by asset class as of June 30, 2020 is included in Note 5 - "Investments" to our unaudited condensed consolidated financial statements included within Item 1 of this Quarterly Report on Form 10-Q.
Schedules of maturities by asset class are included in Note 5 - "Investments" to our unaudited condensed consolidated financial statements included within Item 1 of this Quarterly Report on Form 10-Q.

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Composition of Investment Portfolio By Asset Class
The following tables summarize the composition of our investment portfolio by asset class:
June 30, 2020
AAA RatedAA RatedA RatedBBB RatedNon-investment GradeNot RatedTotal%
(in thousands of U.S. dollars, except percentages)
Short-term and fixed maturity investments, trading and AFS and funds held - directly managed
U.S. government & agency$546,471  $—  $—  $—  $—  $—  $546,471  4.2 %
U.K. government2,271  94,987  10,422  —  —  —  107,680  0.8 %
Other government250,552  144,733  53,101  45,147  9,779  —  503,312  3.8 %
Corporate194,895  593,964  2,840,810  1,663,136  262,385  9,910  5,565,100  42.4 %
Municipal10,078  82,087  53,458  20,097  —  —  165,720  1.3 %
Residential mortgage-backed430,300  31  1,807  1,881  450  2,363  436,832  3.3 %
Commercial mortgage-backed575,005  103,238  89,254  60,203  5,625  7,042  840,367  6.4 %
Asset-backed291,013  97,699  149,673  117,217  9,045  1,705  666,352  5.1 %
Total2,300,585  1,116,739  3,198,525  1,907,681  287,284  21,020  8,831,834  67.3 %
Other assets included within funds held - directly managed15,376  0.1 %
Equities
Publicly traded equities274,382  2.1 %
Exchange-traded funds95,389  0.7 %
Privately held equities271,000  2.1 %
Total640,771  4.9 %
Other investments
Hedge funds1,757,982  13.4 %
Fixed income funds584,607  4.5 %
Equity funds368,314  2.8 %
Private equity funds315,070  2.4 %
CLO equities84,188  0.6 %
CLO equity funds123,299  0.9 %
Private credit funds38,094  0.3 %
Other7,231  0.1 %
Total3,278,785  25.0 %
Equity method investments362,398  2.8 %
Total investments$2,300,585  $1,116,739  $3,198,525  $1,907,681  $287,284  $21,020  $13,129,164  100.0 %
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December 31, 2019
AAA RatedAA RatedA RatedBBB RatedNon-investment GradeNot RatedTotal%
(in thousands of U.S. dollars, except percentages)
Fixed maturity and short-term investments, trading and AFS and funds held - directly managed
U.S. government & agency$696,077  $—  $—  $—  $—  $—  $696,077  5.5 %
U.K. government—  161,772  —  —  —  —  161,772  1.3 %
Other government316,150  154,072  63,270  144,557  24,807  —  702,856  5.6 %
Corporate140,889  600,081  2,759,671  1,634,572  311,167  1,890  5,448,270  43.2 %
Municipal10,088  56,389  50,938  23,272  —  —  140,687  1.1 %
Residential mortgage-backed310,595  47,474  2,295  1,882  34,055  4,613  400,914  3.2 %
Commercial mortgage-backed567,453  80,517  87,081  63,565  5,556  9,574  813,746  6.4 %
Asset-backed304,542  79,930  159,087  110,201  15,694  781  670,235  5.3 %
Total2,345,794  1,180,235  3,122,342  1,978,049  391,279  16,858  9,034,557  71.6 %
Other assets included within funds held - directly managed14,207  0.1 %
Equities
Publicly traded equities327,875  2.6 %
Exchange-traded funds133,047  1.1 %
Privately held equities265,799  2.1 %
Total726,721  5.8 %
Other investments
Hedge funds1,121,904  8.9 %
Fixed income funds481,039  3.8 %
Equity funds410,149  3.3 %
Private equity funds323,496  2.5 %
CLO equities87,555  0.7 %
CLO equity funds87,509  0.7 %
Private credit funds—  — %
Other6,379  — %
Total2,518,031  19.9 %
Equity method investments326,277  2.6 %
Total investments$2,345,794  $1,180,235  $3,122,342  $1,978,049  $391,279  $16,858  $12,619,793  100.0 %

A description of our investment valuation processes is included in "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations - Critical Accounting Policies" of our Annual Report on Form 10-K for the year ended December 31, 2019 and Note 11 - "Fair Value Measurements" to our unaudited condensed consolidated financial statements included within Item 1 of this Quarterly Report on Form 10-Q.

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The amortized cost, unrealized gains and losses, allowance for credit losses and fair values of our short-term and fixed maturity investments as of June 30, 2020 were as follows:
Gross Unrealized Losses
As of June 30, 2020Amortized CostGross Unrealized GainsNon-Credit Related Losses
Allowance for Credit Losses(1)
Fair Value
U.S. government and agency$522,106  $24,769  $(404) $—  $546,471  
U.K. government107,185  2,011  (1,516) —  107,680  
Other government488,650  19,179  (4,517) —  503,312  
Corporate5,268,218  327,484  (27,512) (3,090) 5,565,100  
Municipal150,546  15,966  (792) —  165,720  
Residential mortgage-backed430,201  9,505  (2,874) —  436,832  
Commercial mortgage-backed825,225  33,301  (17,665) (494) 840,367  
Asset-backed695,528  3,479  (32,566) (89) 666,352  
$8,487,659  $435,694  $(87,846) $(3,673) $8,831,834  
(1) The Company adopted ASU 2016-13 and the related amendments on January 1, 2020. Refer to Note 1 - "Significant Accounting Policies" to our unaudited condensed consolidated financial statements included within Item 1 of this Quarterly Report on Form 10-Q for further details.

The amortized cost, unrealized gains and losses and fair values of our short-term and fixed maturity investments as of December 31, 2019 were as follows:
As of December 31, 2019Amortized CostGross Unrealized GainsGross Unrealized Losses
(Non-OTTI)
Fair Value
U.S. government and agency$690,343  $6,663  $(929) $696,077  
U.K. government155,261  6,628  (117) 161,772  
Other government684,116  24,994  (6,254) 702,856  
Corporate5,231,512  235,406  (18,648) 5,448,270  
Municipal131,130  9,595  (38) 140,687  
Residential mortgage-backed396,331  5,981  (1,398) 400,914  
Commercial mortgage-backed796,730  20,673  (3,657) 813,746  
Asset-backed674,250  1,806  (5,821) 670,235  
$8,759,673  $311,746  $(36,862) $9,034,557  

We have generally accounted for our fixed maturity securities as "trading." However, from October 1, 2019, we have elected to use AFS accounting and, where permissible, as trading fixed income securities mature, we are reinvesting the proceeds into AFS securities for the Non-life Run-off and StarStone segments. The difference is that unrealized changes on investments classified as trading are recorded through earnings, whereas unrealized changes on investments classified as AFS are recorded directly to shareholders' equity. We may experience unrealized losses on our fixed maturity investments, depending on investment conditions and general economic conditions. Unrealized amounts would only become realized in the event of a sale of the specific securities prior to maturity or a credit default. For further information on the sensitivity of our portfolio to changes in interest rates, refer to the Interest Rate Risk section within "Item 3. Quantitative and Qualitative Disclosures About Market Risk", included within this Quarterly Report on Form 10-Q.

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The following table summarizes the composition of our top ten corporate issuers included within our short-term and fixed maturity investments, classified as trading and AFS and the fixed maturity investments included within our funds held - directly managed balance as of June 30, 2020:
Fair ValueAverage Credit Rating
(in thousands of U.S. dollars)
Bank of America Corp$115,475  A
Citigroup Inc114,733  A-
JPMorgan Chase & Co111,934  A
Morgan Stanley107,951  A-
Wells Fargo & Co96,126  A
Apple Inc94,306  AA+
Comcast Corp79,963  A-
HSBC Holdings PLC53,825  A-
Walmart Inc52,240  AA
AT&T Inc50,119  BBB
$876,672  

Investment Results - Consolidated
In addition to the impact of the COVID-19 pandemic in 2020, the comparability of our investment results across different periods was impacted by the acquisitions and reinsurance transactions we completed during 2020 with AXA Group, Aspen and Lyft and in 2019 with Morse TEC, Zurich, Maiden Re, Amerisure and AmTrust. Refer to Note 3 - "Significant New Business" to our unaudited condensed consolidated financial statements included within Item 1 of this Quarterly Report on Form 10-Q for further details on the 2020 transactions and "Item 1. Business - Recent Acquisitions and Significant New Business" in our Annual Report on Form 10-K for the year ended December 31, 2019 for further details on the 2019 transactions.
The following tables summarize our investment results by major investment category and by segment as well as our other activities. Additional information is included in Note 5 - "Investments" to our unaudited condensed consolidated financial statements included within Item 1 of this Quarterly Report on Form 10-Q.
Three Months Ended June 30, 2020
Non-life
Run-off
AtriumStarStoneOtherTotal
(in thousands of U.S. dollars)
Net investment income:
Fixed maturities and cash and cash equivalents$81,075  $991  $6,305  $ $88,373  
Equity securities3,726  21  15  —  3,762  
Other6,850  145  1,091  (2,795) 5,291  
Gross investment income (expense)91,651  1,157  7,411  (2,793) 97,426  
Investment expenses(2,595) (78) (310) —  (2,983) 
Net investment income (expense)$89,056  $1,079  $7,101  $(2,793) $94,443  
Net realized and unrealized gains:
Fixed maturity securities384,994  5,867  26,503  —  417,364  
Equity securities35,075  1,308  2,837  —  39,220  
Other investments506,425  392  4,207  —  511,024  
Net realized and unrealized gains$926,494  $7,567  $33,547  $—  $967,608  
Annualized income from cash and fixed maturities$324,300  $3,964  $25,220  $ $353,492  
Average aggregate fixed maturities and cash and cash equivalents, at cost (1)
9,526,799  255,320  1,037,474  13,175  10,832,768  
Annualized Investment Book Yield3.40 %1.55 %2.43 %0.06 %3.26 %
Total financial statement return (2)
$1,015,550  $8,646  $40,648  $(2,793) $1,062,051  
Average aggregate invested assets, at fair value (1)
12,881,483  287,738  1,191,301  13,175  14,373,697  
Financial Statement Portfolio Return7.88 %3.00 %3.41 %(21.20)%7.39 %
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Three Months Ended June 30, 2019
Non-life
Run-off
AtriumStarStoneOtherTotal
(in thousands of U.S. dollars)
Net investment income:
Fixed maturities and cash and cash equivalents$61,556  $1,735  $7,128  $581  $71,000  
Equity securities2,903  21  498  —  3,422  
Other investments and other3,594  404  1,672  (3,167) 2,503  
Gross investment income68,053  2,160  9,298  (2,586) 76,925  
Investment expenses(2,196) (107) (491) 140  (2,654) 
Net investment income (expense)$65,857  $2,053  $8,807  $(2,446) $74,271  
Net realized and unrealized gains:
Fixed maturity securities$169,494  $1,644  $10,467  $4,214  $185,819  
Equity securities13,384  191  371  —  13,946  
Other investments58,664  134  1,775  331  60,904  
Net realized and unrealized gains$241,542  $1,969  $12,613  $4,545  $260,669  
Annualized income from cash and fixed maturities$246,224  $6,940  $28,512  $2,324  $284,000  
Average aggregate fixed maturities and cash and cash equivalents, at cost (1)
8,770,538  255,117  1,148,211  88,201  10,262,067  
Annualized Investment Book Yield2.81 %2.72 %2.48 %2.63 %2.77 %
Total financial statement return (2)
$307,399  $4,022  $21,420  $2,099  $334,940  
Average aggregate invested assets, at fair value (1)
11,542,943  266,045  1,301,833  100,089  13,210,910  
Financial Statement Portfolio Return2.66 %1.51 %1.65 %2.10 %2.54 %
(1) These amounts are an average of the amounts disclosed in our quarterly U.S. GAAP consolidated financial statements.
(2) This is the sum of net investment income and net realized and unrealized gains (losses) from our U.S. GAAP consolidated financial statements.

Net Investment Income:
Net investment income increased by $20.2 million for the three months ended June 30, 2020 compared to the three months ended June 30, 2019, primarily due to a $17.4 million increase in net investment income from fixed maturities and cash and cash equivalents, principally due to an increase of $570.7 million in our average aggregate fixed maturities and cash and cash equivalents. The increase in our average aggregate fixed maturities and cash and cash equivalents was primarily due to the Lyft, Aspen and AXA Group transactions in 2020, and the Morse TEC, Zurich, Maiden Re and Amerisure transactions in 2019. Our annualized book yield increased 50 basis points for the three months ended June 30, 2020 compared to the three months ended June 30, 2019, primarily due to interest on short-term funds held arrangements relating to the 2020 transactions.
Net Realized and Unrealized Gains (Losses):
Net realized and unrealized gains were $967.6 million for the three months ended June 30, 2020 compared to gains of $260.7 million for the three months ended June 30, 2019, an increase of $706.8 million. Included in net realized and unrealized gains (losses) are the following items:
Net realized and unrealized gains on fixed income securities, including fixed income securities within our funds held portfolios, of $417.4 million for the three months ended June 30, 2020, compared to gains of $185.8 million for the three months ended June 30, 2019, an increase of $231.5 million. Gains in the current period were primarily attributable to an increase in the valuation of our fixed maturity investments due to tighter credit spreads and lower interest rates in the current period, compared to the comparative period.
Net realized and unrealized gains on equity securities of $39.2 million for the three months ended June 30, 2020, compared to gains of $13.9 million for the three months ended June 30, 2019, an increase of $25.2 million, primarily driven by a more favorable movements in equity markets in 2020 compared to the comparative period.
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Net realized and unrealized gains on other investments of $511.0 million for the three months ended June 30, 2020, compared to gains of $60.9 million for the three months ended June 30, 2019, representing an increase of $450.1 million. The unrealized gains for the three months ended June 30, 2020 primarily comprised of unrealized gains in our hedge funds, fixed income funds, equity funds and CLO equities and CLO equity funds principally driven by tightening credit spreads and more favorable movement in international equity markets in the current period reversing the impact of the unrealized losses associated with COVID-19 pandemic during the first quarter of 2020. The unrealized gains for the three months ended June 30, 2019 primarily comprised of unrealized gains in our hedge funds, private equity funds, fixed income funds and equity funds, partially offset by unrealized losses on CLO equities.

The following tables summarize our investment results for the six months ended June 30, 2020 and 2019:
Six Months Ended June 30, 2020
Non-life
Run-off
AtriumStarStoneOtherTotal
(in thousands of U.S. dollars)
Net investment income:
Fixed maturities and cash and cash equivalents$138,493  $2,428  $12,504  $101  $153,526  
Equity securities9,089  37  599  —  9,725  
Other15,338  281  3,147  (5,382) 13,384  
Gross investment income162,920  2,746  16,250  (5,281) 176,635  
Investment expenses(6,413) (142) (923) —  (7,478) 
Net investment income (expense)$156,507  $2,604  $15,327  $(5,281) $169,157  
Net realized and unrealized gains and losses:
Fixed maturity securities146,714  3,047  (9,958) —  139,803  
Equity securities(53,625) (160) 2,045  —  (51,740) 
Other investments258,723  (1,028) (7,211) —  250,484  
Net realized and unrealized gains and losses$351,812  $1,859  $(15,124) $—  $338,547  
Annualized income from cash and fixed maturities$276,986  $4,856  $25,008  $202  $307,052  
Average aggregate fixed maturities and cash and cash equivalents, at cost (1)
9,344,747  255,957  1,034,472  13,179  10,648,355  
Annualized Investment Book Yield2.96 %1.90 %2.42 %1.53 %2.88 %
Total financial statement return (2)
$508,319  $4,463  $203  $(5,281) $507,704  
Average aggregate invested assets, at fair value (1)
12,655,082  287,954  1,224,865  13,179  14,181,080  
Financial Statement Portfolio Return4.02 %1.55 %0.02 %(40.07)%3.58 %

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Six Months Ended June 30, 2019
Non-life
Run-off
AtriumStarStoneOtherTotal
(in thousands of U.S. dollars)
Net investment income:
Fixed maturities and cash and cash equivalents$125,805  $3,202  $15,268  $961  $145,236  
Equity securities5,781  36  985  —  6,802  
Other investments and other6,648  701  2,456  (5,188) 4,617  
Gross investment income (expense)138,234  3,939  18,709  (4,227) 156,655  
Investment expenses(5,649) (175) (1,005) 96  (6,733) 
Net investment income (expense)$132,585  $3,764  $17,704  $(4,131) $149,922  
Net realized and unrealized gains and losses:
Fixed maturity securities$391,771  $3,774  $24,055  $4,150  $423,750  
Equity securities25,182  547  (1,852) —  23,877  
Other investments260,775  561  3,037  1,429  265,802  
Net realized and unrealized gains$677,728  $4,882  $25,240  $5,579  $713,429  
Annualized income from cash and fixed maturities$251,610  $6,404  $30,536  $1,922  $290,472  
Average aggregate fixed maturities and cash and cash equivalents, at cost (1)
8,615,603  257,734  1,165,592  123,220  10,162,149  
Annualized Investment Book Yield2.92 %2.48 %2.62 %1.56 %2.86 %
Total financial statement return (2)
$810,313  $8,646  $42,944  $1,448  $863,351  
Average aggregate invested assets, at fair value (1)
11,141,014  267,148  1,307,835  136,948  12,852,945  
Financial Statement Portfolio Return7.27 %3.24 %3.28 %1.06 %6.72 %
(1) These amounts are an average of the amounts disclosed in our quarterly U.S. GAAP consolidated financial statements.
(2) This is the sum of net investment income and net realized and unrealized gains (losses) from our U.S. GAAP consolidated financial statements.
Net Investment Income:
Net investment income increased by $19.2 million for the six months ended June 30, 2020 compared to the six months ended June 30, 2019, primarily due to a $8.3 million increase in net investment income from fixed maturities and cash and cash equivalents, principally due to an increase of $486.2 million in our average aggregate fixed maturities and cash and cash equivalents. The increase in our average aggregate fixed maturities and cash and cash equivalents was primarily due to the Lyft, Aspen and AXA Group transactions in 2020 and the AmTrust RITC, Amerisure, Zurich and Maiden Re transactions in 2019. The book yield increased by 2 basis points, primarily due to interest on short-term funds held arrangements relating to the 2020 transactions.
Net Realized and Unrealized Gains (Losses):
Net realized and unrealized gains were $338.5 million for the six months ended June 30, 2020 compared to net realized and unrealized gains of $713.4 million for the six months ended June 30, 2019, a decrease of $374.9 million. Included in net realized and unrealized gains (losses) are the following items:
Net realized and unrealized gains on fixed income securities, including fixed income securities within our funds held portfolios, of $139.8 million for the six months ended June 30, 2020, compared to net realized and unrealized gains of $423.8 million for the six months ended June 30, 2019, a decrease of $283.9 million. The gains in the current period were primarily driven by low interest rates and tightening credit spreads in the second quarter of 2020, which offset the losses associated with the COVID-19 pandemic in the first quarter. The gains in 2019 were also due to tightening credit spreads;
Net realized and unrealized losses on equity securities of $51.7 million for the six months ended June 30, 2020, compared to net realized and unrealized gains $23.9 million for the six months ended June 30, 2019, a change of $75.6 million, primarily driven by the unrealized losses associated with the market volatility occurring amidst the COVID-19 pandemic during the first quarter of 2020. Gains in the prior period were primarily driven by favorable movements in international equity markets in 2019; and
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Net realized and unrealized gains on other investments and other items of $250.5 million for the six months ended June 30, 2020, compared to realized and unrealized gains of $265.8 million for the six months ended June 30, 2019, representing a decrease of $15.3 million. The unrealized gains for the six months ended June 30, 2020 primarily comprised unrealized gains in our hedge funds and private equity funds, principally driven by declining interest rates and improving international equity markets, partially offset by unrealized losses in our equity funds, fixed income funds, CLO equities and CLO equity funds, due to recent disruption in global financial markets associated with the COVID-19 pandemic. The unrealized gains for the six months ended June 30, 2019 primarily comprised unrealized gains in our hedge funds, equity funds, fixed income funds and private equity funds, principally driven by tightening credit spreads and a more favorable movement in international equity markets in 2019.
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Liquidity and Capital Resources

Overview
We aim to generate cash flows from our insurance operations and investments, preserve sufficient capital for future acquisitions, and develop relationships with lenders who provide borrowing capacity at competitive rates.
Our capital resources as of June 30, 2020 included ordinary shareholders' equity of $4.7 billion, preferred equity of $510.0 million, redeemable noncontrolling interest of $366.5 million classified as temporary equity, and debt obligations of $1.5 billion. The redeemable noncontrolling interest may be settled in the future in cash or our ordinary shares, at our option. Based on our current loss reserves position, our portfolios of in-force insurance and reinsurance business, and our investment positions, we believe we are well capitalized.
The following table details our capital position:
June 30, 2020December 31, 2019Change
(in thousands of U.S. dollars)
Ordinary shareholders' equity$4,676,913  $4,332,183  $344,730  
Series D and E Preferred Shares 510,000  510,000  —  
Total Enstar Shareholders' Equity (A)5,186,913  4,842,183  344,730  
Noncontrolling interest13,553  14,168  (615) 
Total Shareholders' Equity (B)5,200,466  4,856,351  344,115  
Senior Notes842,779  842,216  563  
Revolving credit facility350,000  —  350,000  
Term loan facility349,243  348,991  252  
Total debt (C)1,542,022  1,191,207  350,815  
Redeemable noncontrolling interest (D)366,533  438,791  (72,258) 
Total capitalization = (B) + (C) + (D)$7,109,021  $6,486,349  $622,672  
Total capitalization attributable to Enstar = (A) + (C)$6,728,935  $6,033,390  $695,545  
Debt to total capitalization21.7 %18.4 %3.3 %
Debt and Series D and E Preferred Shares to total capitalization28.9 %26.2 %2.7 %
Debt to total capitalization attributable to Enstar22.9 %19.7 %3.2 %
Debt and Series D and E Preferred Shares to total capitalization available to Enstar30.5 %28.2 %2.3 %
As of June 30, 2020, we had $651.9 million of cash and cash equivalents, excluding restricted cash that supports insurance operations, and included in this amount was $447.8 million held by foreign subsidiaries outside of Bermuda. Based on our group's current corporate structure with a Bermuda domiciled parent company and the jurisdictions in which we operate, if the cash and cash equivalents held by our foreign subsidiaries were to be distributed to us, as dividends or otherwise, such amounts would not be subject to incremental income taxes, however in certain circumstances withholding taxes may be imposed by some jurisdictions, including the United States. Based on existing tax laws, regulations and our current intentions, there was no accrual as of June 30, 2020 for any material withholding taxes on dividends or other distributions, as described in Note 19 - "Income Taxation" to our unaudited condensed consolidated financial statements included within Item 1 of this Quarterly Report on Form 10-Q.
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Dividends
Enstar has not historically declared a dividend on its ordinary shares.  Our strategy is to retain earnings and invest distributions from our subsidiaries back into the company. We do not currently expect to pay any dividends on our ordinary shares.
On June 28, 2018, we issued 16,000 Series D Preferred Shares with an aggregate liquidation value of $400.0 million. On November 21, 2018, we issued 4,400 Series E Preferred Shares with an aggregate liquidation value of $110.0 million. The dividends on the Series D and E Preferred Shares are non-cumulative and may be paid quarterly in arrears on the first day of March, June, September and December of each year, only when, as and if declared.
The following table details the dividends that have been declared and paid on our Series D and E Preferred Shares from January 1, 2020 to August 10, 2020:
Dividend per:
Preferred Share SeriesDate DeclaredRecord DateDate Paid or PayablePreferred ShareDepositary ShareTotal dividends paid in the six months ended June 30, 2020
(in U.S. dollars)(in thousands of U.S. dollars)
Series DFebruary 4,
2020
February 15,
2020
March 2,
2020
$437.50  $0.43750  $7,000  
Series EFebruary 4,
2020
February 15,
2020
March 2,
2020
$437.50  $0.43750  1,925  
Series DMay 5,
2020
May 15,
2020
June 1,
2020
$437.50  $0.43750  7,000  
Series EMay 5,
2020
May 15,
2020
June 1,
2020
$437.50  $0.43750  1,925  
Series DAugust 5,
2020
August 15,
2020
September 1,
2020
$437.50  $0.43750  —  
Series EAugust 5,
2020
August 15,
2020
September 1,
2020
$437.50  $0.43750  —  
$17,850  

Any payment of common or preferred dividends must be approved by our Board of Directors. Our ability to pay common and preferred dividends is subject to certain restrictions, as described in Note 22 - "Dividend Restrictions and Statutory Financial Information" to the consolidated financial statements contained in our Annual Report on Form 10-K for the year ended December 31, 2019.

Sources and Uses of Cash

Holding Company Liquidity
The potential sources of cash flows to Enstar as a holding company consist of cash flows from our subsidiaries including dividends, advances and loans, and interest income on loans to our subsidiaries. We also borrow under our credit and loan facilities, and we have also issued senior notes and preferred shares.
We use cash to fund new acquisitions of companies and significant new business. We also utilize cash for our operating expenses associated with being a public company and to pay dividends on our preference shares and interest and principal on loans from subsidiaries and debt obligations, including loans under our credit facilities, our 4.50% senior notes due 2022 (the “2022 Senior Notes”) and our 4.95% senior notes due 2029 (the "2029 Senior Notes” and, together with the 2022 Senior Notes, the "Senior Notes"). The Senior Notes qualify as Tier 3 capital under the eligible capital rules of the Bermuda Monetary Authority.
We may, from time to time, raise capital from the issuance of equity, debt or other securities as we continuously evaluate our strategic opportunities. We filed an automatic shelf registration statement on October 10, 2017 with the U.S. Securities and Exchange Commission ("SEC") to allow us to conduct future offerings of certain securities, if desired, including debt, equity and other securities.
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As we are a holding company and have no substantial operations of our own, our assets consist primarily of investments in subsidiaries and our loans and advances to subsidiaries. Dividends from our insurance subsidiaries are restricted by insurance regulation, as described below.

Operating Company Liquidity
The ability of our insurance and reinsurance subsidiaries to pay dividends and make other distributions is limited by the applicable laws and regulations of the jurisdictions in which our insurance and reinsurance subsidiaries operate, including Bermuda, the United Kingdom, the United States, Australia and Continental Europe, which subject these subsidiaries to significant regulatory restrictions. These laws and regulations require, among other things, certain of our insurance and reinsurance subsidiaries to maintain minimum capital resources requirements and limit the amount of dividends and other payments that these subsidiaries can pay to us, which in turn may limit our ability to pay dividends and make other payments. For more information on these laws and regulations, see "Item 1. Business - Regulation" in our Annual Report on Form 10-K for the year ended December 31, 2019. As of June 30, 2020, all of our insurance and reinsurance subsidiaries’ capital resources levels were in excess of the minimum levels required. The ability of our subsidiaries to pay dividends is subject to certain restrictions, as described in Note 22 - "Dividend Restrictions and Statutory Financial Information" to our consolidated financial statements included within Item 8 of our Annual Report on Form 10-K for the year ended December 31, 2019. Our subsidiaries' ability to pay dividends and make other forms of distributions may also be limited by our repayment obligations under certain of our outstanding loan facility agreements. Variability in ultimate loss payments and valuations of investments held in collateral accounts may also result in increased liquidity requirements for our subsidiaries.
In the Non-life Run-off segment, sources of funds primarily consist of cash and investment portfolios acquired on the completion of acquisitions and loss portfolio transfer reinsurance agreements. Cash balances acquired upon our purchase of insurance or reinsurance companies are classified as cash provided by investing activities. Cash acquired from loss portfolio transfer reinsurance agreements is classified as cash provided by operating activities. We expect to use funds acquired from cash and investment portfolios, collected premiums, collections from reinsurance debtors, fees and commission income, investment income and proceeds from sales and redemptions of investments to meet expected claims payments and operational expenses, with the remainder used for acquisitions and additional investments. In the Non-life Run-off segment, we generally expect negative operating cash flows to be met by positive investing cash flows; however, cash provided by operating activities was positive for the six months ended June 30, 2020 and 2019 as the proceeds from sales and maturities of trading securities exceeded cash used in the purchase of trading securities, with the net proceeds being used in the purchase of available-for-sale securities included within investing cash flows.
In the Atrium segment, we expect a net provision of cash from operations as investment income earned and collected premiums should generally be in excess of total net claim payments, losses incurred on earned premiums and operating expenses. As a result of the announcement to sell StarStone U.S. and place StarStone International into run-off, we expect net neutral cash flows from operations as net claim payments, losses incurred on earned premiums and operating expenses are met by cash inflows from investment income, collection of premium receivable and proceeds from sales and maturities of investments.
Overall, we expect our cash flows, together with our existing capital base and cash and investments acquired on the acquisition of insurance and reinsurance subsidiaries, to be sufficient to meet cash requirements and to operate our business.

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Cash Flows
The following table summarizes our consolidated cash flows provided by (used in) operating, investing and financing activities:
 Six Months Ended June 30,
20202019Change
(in thousands of U.S. dollars)
Cash provided by (used in):
Operating activities$849,161  $121,842  $727,319  
Investing activities(1,156,139) (148,831) (1,007,308) 
Financing activities319,624  605,769  (286,145) 
Effect of exchange rate changes on cash4,526  (6,436) 10,962  
Net increase in cash and cash equivalents17,172  572,344  (555,172) 
Cash and cash equivalents, beginning of period971,349  901,996  69,353  
Cash and cash equivalents, end of period$988,521  $1,474,340  $(485,819) 

Details of our consolidated cash flows are included in "Item 1. Financial Statements - Unaudited Condensed Consolidated Statements of Cash Flows for the six months ended June 30, 2020 and 2019."
Six Months Ended June 30: Cash and cash equivalents increased by $17.2 million during the six months ended June 30, 2020 compared to $572.3 million during the six months ended June 30, 2019.
For the six months ended June 30, 2020, cash and cash equivalents increased by $17.2 million, as cash provided by operating and financing activities of $849.2 million and $319.6 million, respectively, was partially offset by cash used in investing activities of $1,156.1 million. Cash provided by operations was largely the result of proceeds from net sales and maturities of trading securities. Cash provided by financing activities for the six months ended June 30, 2020 was primarily attributable to the net debt obligations drawdown of $350.0 million under the EGL Revolving Credit Facility, which was utilized to provide $150.0 million in funding for significant new business and to provide $200.0 million of additional liquidity to the Company to maximize financial flexibility following the recent disruption in global financial markets associated with the COVID-19 pandemic. During the six months ended June 30, 2020, we repurchased 92,510 shares for $12.5 million, and paid $17.9 million of dividends on preferred shares, which are cash outflows within cash provided by financing activities. Cash used in investing activities for the six months ended June 30, 2020 primarily related to the net purchases of other investments of $520.2 million and the net purchases of AFS securities of $602.2 million.
For the six months ended June 30, 2019, cash and cash equivalents increased by $572.3 million, as cash provided by operating and financing activities of $121.8 million and $605.8 million, respectively, was partially offset by cash used in investing activities of $148.8 million. Cash used in investing activities for the six months ended June 30, 2019 was primarily related to net purchases of other investments of $199.2 million. Cash provided by operations was largely a result of timing of paid losses. Cash provided by financing activities for the six months ended June 30, 2019 was primarily attributable to an increase in debt obligations of $635.4 million, which included short-term funding under the EGL Revolving Credit Facility in relation to temporary additional collateral for a Part VII transfer in the United Kingdom that was subsequently repaid in July 2019.

Investable Assets
We define investable assets as the sum of total investments, cash and cash equivalents, restricted cash and cash equivalents and funds held. Investable assets were $15.6 billion as of June 30, 2020 as compared to $14.1 billion as of December 31, 2019, an increase of 10.8%. The increase was primarily due to assets acquired in relation to the Lyft, Aspen and AXA Group transactions and unrealized gains on investments.
For information regarding our investments strategy, portfolio and results, refer to "Investable Assets" above.

Reinsurance Balances Recoverable
As of June 30, 2020 and December 31, 2019, we had reinsurance balances recoverable on paid and unpaid losses of $2.1 billion and $2.2 billion, respectively.
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Our insurance and reinsurance run-off subsidiaries and portfolios, prior to acquisition, used retrocessional agreements to reduce their exposure to the risk of insurance and reinsurance assumed. On an annual basis, both Atrium and StarStone have purchased a tailored outwards reinsurance program designed to manage their risk profiles. The majority of Atrium’s and StarStone's third-party reinsurance cover is with highly rated reinsurers or is collateralized by letters of credit.
We remain liable to the extent that retrocessionaires do not meet their obligations under these agreements, and therefore, we evaluate and monitor concentration of credit risk among our reinsurers. Provisions are made for amounts considered potentially uncollectible.
For further information regarding our unaudited condensed reinsurance balances recoverable, refer to Note 7 - "Reinsurance Balances Recoverable on Paid and Unpaid Losses" in the notes to our unaudited condensed consolidated financial statements included within Item 1 of this Quarterly Report on Form 10-Q.

Debt Obligations
We utilize debt financing and loan facilities primarily for acquisitions, significant new business and, from time to time, for general corporate purposes. For information regarding our debt arrangements, refer to Note 14 - "Debt Obligations and Credit Facilities" to our unaudited condensed consolidated financial statements included within Item 1 of this Quarterly Report on Form 10-Q.
Our debt obligations as of June 30, 2020 and December 31, 2019 were $1.5 billion and $1.2 billion, respectively, as detailed in the below table:
FacilityOrigination DateTermJune 30, 2020December 31, 2019
4.50% Senior Notes due 2022March 10, 20175 years$348,886  $348,616  
4.95% Senior Notes due 2029May 28, 201910 years493,893  493,600  
Total Senior Notes842,779  842,216  
EGL Revolving Credit FacilityAugust 16, 20185 years350,000  —  
2018 EGL Term Loan Facility December 27, 20183 years349,243  348,991  
Total debt obligations$1,542,022  $1,191,207  

During the six months ended June 30, 2020, we utilized $364.0 million and repaid $14.0 million under our facilities. The revolving credit facility was utilized to provide funding of $150.0 million for significant new business as described in Note 3 - "Significant New Business" to our unaudited condensed consolidated financial statements included within Item 1 of this Quarterly Report on Form 10-Q and to provide $200.0 million of additional liquidity to the Company to maximize financial flexibility following the recent disruption in global financial markets associated with the COVID-19 pandemic.
On August 16, 2018, we and certain of our subsidiaries, as borrowers and guarantors, entered into a five-year unsecured $600.0 million revolving credit agreement. The credit agreement expires in August 2023 and we have the option to increase the commitments under the facility by up to an aggregate of $400.0 million. As of June 30, 2020, there was $250.0 million of available unutilized capacity under this facility. We are in compliance with the covenants of the facility. Subsequent to June 30, 2020, we have neither borrowed nor repaid any additional amounts under the facility, leaving the unutilized capacity under this facility at $250.0 million.
On December 27, 2018, we entered into and fully utilized a three-year $500.0 million unsecured term loan (the "2018 EGL Term Loan Facility"). During 2019, we repaid $150.0 million of principal on the facility, bringing the outstanding loan amount to $349.2 million, which includes unamortized issuance costs of $0.8 million, as of June 30, 2020.
For information regarding our Senior Notes, refer to Note 14 - "Debt Obligations and Credit Facilities" in the notes to our unaudited condensed consolidated financial statements included within Item 1 of this Quarterly Report on Form 10-Q.

Letters of Credit
We utilize unsecured and secured letters of credit to support certain of our insurance and reinsurance performance obligations.
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Funds at Lloyd's
We have an unsecured letter of credit agreement for Funds at Lloyd's (the "FAL Facility") to issue up to $375.0 million of letters of credit, with provision to increase the facility by an additional $25.0 million up to an aggregate amount of $400.0 million, subject to lenders approval. On November 6, 2019, we amended and restated the FAL Facility to extend its term by one year. The FAL Facility is available to satisfy our Funds at Lloyd's requirements and expires in 2023. As of June 30, 2020 and December 31, 2019, our combined Funds at Lloyd's were comprised of cash and investments of $574.1 million and $639.3 million, respectively, and unsecured letters of credit of $252.0 million as of both dates.
$120.0 million Letter of Credit Facility
We use this facility to support certain reinsurance collateral obligations of our subsidiaries. On December 6, 2019, we reduced the facility size from $170.0 million to $120.0 million. Pursuant to the facility agreement, we have the option to increase commitments under the facility by an additional $60.0 million. As of both June 30, 2020 and December 31, 2019, we had issued an aggregate amount of letters of credit under this facility of $115.3 million.
$800.0 million Syndicated Letter of Credit Facility
During 2019, we entered into an unsecured $760.0 million letter of credit facility agreement, most recently amended on June 3, 2020. On August 4, 2020, we exercised our option to increase the commitments available under the facility by an aggregate amount of $40.0 million, bringing the total size of the facility to $800.0 million. The facility is used to post letters of credit to collateralize reinsurance performance obligations to various parties, including $447.4 million relating to the reinsurance transaction with Maiden Reinsurance Ltd. ("Maiden Re Bermuda"). As of June 30, 2020 and December 31, 2019, we had issued an aggregate amount of letters of credit under this facility of $594.1 million and $608.0 million, respectively.
$65.0 million Letter of Credit Facility
On August 4, 2020, we entered into a $65.0 million secured letter of credit facility agreement pursuant to which we issued a letter of credit in the amount of approximately $61.0 million to collateralize a portion of our reinsurance performance obligations relating to our novation transaction with Hannover Re, which we completed on August 6, 2020, as discussed in Note 3 - "Significant New Business" to our unaudited condensed consolidated financial statements included within Item 1 of this Quarterly Report on Form 10-Q.
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Contractual Obligations
The following table summarizes, as of June 30, 2020, our future payments under contractual obligations and estimated payments for losses and LAE and policy benefits by expected payment date and updates the table on page 89 of our Annual Report on Form 10-K for the year ended December 31, 2019. The table excludes short-term liabilities and includes only obligations that are expected to be settled in cash.  
  TotalLess than or equal to 1 yearMore than 1 year - less than or equal to 3 yearsMore than 3 years - less than or equal to 5 yearsMore than 5 years - less than or equal to 10 yearsMore than
10 years
 (in millions of U.S. dollars)
Operating Activities
Estimated gross reserves for losses and LAE (1)
Asbestos$1,779.9  $154.8  $267.2  $220.2  $350.9  $786.8  
Environmental324.0  36.4  62.5  50.0  71.2  103.9  
General Casualty1,651.4  189.8  263.3  291.5  676.9  229.9  
Workers' compensation/personal accident2,116.1  173.2  281.5  338.9  478.5  844.0  
Marine, aviation and transit390.6  117.2  121.5  57.1  50.5  44.3  
Construction defect115.9  31.9  42.0  20.7  12.5  8.8  
Professional indemnity/ Directors & Officers990.3  205.5  261.2  155.0  239.1  129.5  
Motor995.5  328.6  371.1  78.7  78.4  138.7  
Property145.1  58.2  47.3  18.3  12.3  9.0  
Other403.7  110.7  87.8  53.4  63.7  88.1  
Total Non-Life Run-off8,912.5  1,406.3  1,805.4  1,283.8  2,034.0  2,383.0  
Atrium233.7  91.9  84.8  34.3  19.0  3.7  
StarStone International (Non-U.S.)1,303.9  446.5  463.8  205.6  151.9  36.1  
Other24.7  6.0  8.0  3.2  7.5  —  
ULAE368.1  69.1  87.2  52.6  62.5  96.7  
Estimated gross reserves for losses and LAE (1)
10,842.9  2,019.8  2,449.2  1,579.5  2,274.9  2,519.5  
Held for sale liabilities: StarStone U.S. gross reserves for losses and LAE(2)
838.7  246.5  292.0  153.6  109.7  36.9  
Operating lease obligations(3)
48.5  11.2  16.6  10.7  8.0  2.0  
Investing Activities
Investment commitments to private equity funds544.7  266.7  197.1  49.6  31.3  —  
Investment commitments to equity method investments76.5  76.5  —  —  —  —  
Financing Activities
Loan repayments (including estimated interest payments)1,834.9  53.7  782.4  399.8  599.0  —  
Total$14,186.2  $2,674.4  $3,737.3  $2,193.2  $3,022.9  $2,558.4  
(1)The reserves for losses and LAE represent management’s estimate of the ultimate cost of settling losses. The estimation of losses is based on various complex and subjective judgments. Actual losses paid may differ, perhaps significantly, from the reserve estimates reflected in our financial statements. Similarly, the timing of payment of our estimated losses is not fixed and there may be significant changes in actual payment activity. The assumptions used in estimating the likely payments due by period are based on our historical claims payment experience and industry payment patterns, but due to the inherent uncertainty in the process of estimating the timing of such payments, there is a risk that the amounts paid in any such period can be significantly different from the amounts disclosed above. The amounts in the above table represent our estimates of known liabilities as of June 30, 2020 and do not take into account corresponding reinsurance balance recoverable amounts that would be due to us. Furthermore, certain of the reserves included in the unaudited condensed consolidated financial statements as of June 30, 2020 were acquired by us and initially recorded at fair value with subsequent amortization, whereas the expected payments by period in the table above are the estimated payments at a future time and do not reflect the fair value adjustment in the amount payable.
(2) In connection with the sale of StarStone U.S. disclosed within Note 4 - "Divestitures, Held-for-Sale Businesses and Discontinued Operations," these liabilities are classified as held-for-sale as at June 30, 2020. Our Non-life Run-off segment will be assuming these liabilities, together with the associated reinsurance asset, via a loss portfolio transfer reinsurance agreement which is expected to occur contemporaneously with the sale of StarStone U.S. in the second half of 2020, subject to regulatory and other closing conditions.
(3) The variance of $0.7 million between our operating lease obligations disclosure of $48.5 million included within our contractual obligations table above and our undiscounted total lease payments of $47.8 million disclosed within Note 21 - "Commitments and Contingencies", is attributable to lease liabilities related to our short-term leases which are not included in our lease disclosures in Note 21 and offsetting lease liabilities on premises we have sub-leased to third-parties and which are excluded from the operating lease obligations disclosure on the table above.
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In addition to the contractual obligations in the table above, we also have the right to purchase the RNCI from the RNCI holders at certain times in the future (each such right, a "call right") and the RNCI holders have the right to sell their RNCI to us at certain times in the future (each such right, a "put right"). The RNCI rights are described in Note 20 - "Related Party Transactions" to our unaudited condensed consolidated financial statements included within Item 1 of this Quarterly Report on Form 10-Q.
For additional information relating to our commitments and contingencies, see Note 21 - "Commitments and Contingencies" to our unaudited condensed consolidated financial statements included within Item 1 of this Quarterly Report on Form 10-Q.

Off-Balance Sheet Arrangements
At June 30, 2020, we did not have any off-balance sheet arrangements, as defined by Item 303(a)(4) of Regulation S-K.

Critical Accounting Policies
Our critical accounting policies are discussed in Management's Discussion and Analysis of Results of Operations and Financial Condition contained in our Annual Report on Form 10-K for the year ended December 31, 2019. Except as discussed above, in the updates included in "Note 1 - Significant Accounting Policies" to our unaudited condensed consolidated financial statements included within Item 1 of this Quarterly Report on Form 10-Q, our critical accounting policies have not materially changed.

Cautionary Statement Regarding Forward-Looking Statements
This quarterly report and the documents incorporated by reference herein contain statements that constitute "forward-looking statements" within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended, or the Exchange Act, with respect to our financial condition, results of operations, business strategies, operating efficiencies, competitive positions, growth opportunities, plans and objectives of our management, as well as the markets for our securities and the insurance and reinsurance sectors in general. Statements that include words such as "estimate," "project," "plan," "intend," "expect," "anticipate," "believe," "would," "should," "could," "seek," "may" and similar statements of a future or forward-looking nature identify forward-looking statements for purposes of the federal securities laws or otherwise. All forward-looking statements are necessarily estimates or expectations, and not statements of historical fact, reflecting the best judgment of our management and involve a number of risks and uncertainties that could cause actual results to differ materially from those suggested by the forward-looking statements. These forward looking statements should, therefore, be considered in light of various important factors, including those set forth in this quarterly report and in our Annual Report on Form 10-K for the year ended December 31, 2019. These factors include:
risks associated with implementing our business strategies and initiatives;
the adequacy of our loss reserves and the need to adjust such reserves as claims develop over time;
risks relating to our acquisitions, including our ability to evaluate opportunities, successfully price acquisitions, address operational challenges, support our planned growth and assimilate acquired companies into our internal control system in order to maintain effective internal controls, provide reliable financial reports and prevent fraud;
risks relating to our active underwriting businesses, including unpredictability and severity of catastrophic and other major loss events, failure of risk management and loss limitation methods, the risk of a ratings downgrade or withdrawal, and cyclicality of demand and pricing in the insurance and reinsurance markets;
risks relating to the performance of our investment portfolio and our ability to structure our investments in a manner that recognizes our liquidity needs;
changes and uncertainty in economic conditions, including interest rates, inflation, currency exchange rates, equity markets and credit conditions, which could affect our investment portfolio, our ability to finance future acquisitions and our profitability;
risks relating to the evolving COVID-19 global pandemic and the significant disruption and economic and financial turmoil that has taken place as a result of government measures to protect public health;
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the risk that ongoing or future industry regulatory developments will disrupt our business, affect the ability of our subsidiaries to operate in the ordinary course or to make distributions to us, or mandate changes in industry practices in ways that increase our costs, decrease our revenues or require us to alter aspects of the way we do business;
risks relating to the variability of statutory capital requirements and the risk that we may require additional capital in the future, which may not be available or may be available only on unfavorable terms;
risks relating to the availability and collectability of our reinsurance;
losses due to foreign currency exchange rate fluctuations;
increased competitive pressures, including the consolidation and increased globalization of reinsurance providers;
emerging claim and coverage issues;
lengthy and unpredictable litigation affecting the assessment of losses and/or coverage issues;
loss of key personnel;
the ability of our subsidiaries to distribute funds to us and the resulting impact on our liquidity;
our ability to comply with covenants in our debt agreements;
changes in our plans, strategies, objectives, expectations or intentions, which may happen at any time at management’s discretion;
operational risks, including system, data security or human failures and external hazards;
risks relating to our ability to obtain regulatory approvals, including the timing, terms and conditions of any such approvals, and to satisfy other closing conditions in connection with our acquisition agreements, which could affect our ability to complete acquisitions;
risks relating to our subsidiaries with liabilities arising from legacy manufacturing operations;
tax, regulatory or legal restrictions or limitations applicable to us or the insurance and reinsurance business generally;
changes in tax laws or regulations applicable to us or our subsidiaries, or the risk that we or one of our non-U.S. subsidiaries become subject to significant, or significantly increased, income taxes in the United States or elsewhere;
changes in Bermuda law or regulation or the political stability of Bermuda; and
changes in accounting policies or practices.
The factors listed above should be not construed as exhaustive and should be read in conjunction with the Risk Factors that are included in this Quarterly Report on Form 10-Q and in our Annual Report on Form 10-K for the year ended December 31, 2019. We undertake no obligation to publicly update or review any forward looking statement, whether to reflect any change in our expectations with regard thereto, or as a result of new information, future developments or otherwise, except as required by law.
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ITEM 3.   QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
The following risk management discussion and the estimated amounts generated from sensitivity analysis presented are forward-looking statements of market risk assuming certain market conditions occur. Future results may differ materially from these estimated results due to, among other things, actual developments in the global financial markets, changes in the composition of our investment portfolio, or changes in our business strategies. The results of analysis we use to assess and mitigate risk are not projections of future events or losses. See "Cautionary Statement Regarding Forward-Looking Statements" for additional information regarding our forward-looking statements.
We are principally exposed to four types of market risk: interest rate risk, credit risk, equity price risk and foreign currency risk. Our policies to address these risks in 2020 are not materially different than those used in 2019, other than as described herein, and, based on our current knowledge and expectations, we do not currently anticipate significant changes in our market risk exposures or in how we will manage those exposures in future reporting periods.

Interest Rate and Credit Spread Risk
Interest rate risk is the price sensitivity of a security to changes in interest rates. Credit spread risk is the price sensitivity of a security to changes in credit spreads. Our investment portfolio and funds held - directly managed includes fixed maturity and short-term investments, whose fair values will fluctuate with changes in interest rates and credit spreads. We attempt to maintain adequate liquidity in our fixed maturity investments portfolio with a strategy designed to emphasize the preservation of our invested assets and provide sufficient liquidity for the prompt payment of claims and contract liabilities, as well as for settlement of commutation payments. We also monitor the duration and structure of our investment portfolio.
The following table summarizes the aggregate hypothetical change in fair value from an immediate parallel shift in the treasury yield curve, assuming credit spreads remain constant, in our fixed maturity and short-term investments portfolio classified as trading and AFS, our funds held directly managed portfolio, our fixed income funds and our fixed income exchange-traded funds, and excludes investments classified as held for sale:
 Interest Rate Shift in Basis Points
As of June 30, 2020-100-50+50+100
 (in millions of U.S. dollars)
Total Market Value$10,036  $9,778  $9,512  $9,249  $9,014  
Market Value Change from Base5.5 %2.8 %— %(2.8)%(5.2)%
Change in Unrealized Value$524  $266  $—  $(263) $(498) 
As of December 31, 2019-100-50+50+100
Total Market Value$10,141  $9,893  $9,648  $9,415  $9,193  
Market Value Change from Base5.1 %2.5 %— %(2.4)%(4.7)%
Change in Unrealized Value$493  $245  $—  $(233) $(455) 

Actual shifts in interest rates may not change by the same magnitude across the maturity spectrum or on an individual security and, as a result, the impact on the fair value of our fixed maturity securities, short-term investments, funds held - directly managed and fixed income exchange-traded fund may be materially different from the resulting change in value indicated in the tables above.
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The following table summarizes the aggregate hypothetical change in fair value from an immediate parallel shift in credit spreads assuming interest rates remain fixed, in our fixed maturity and short-term investments portfolio classified as trading and AFS, our funds held directly managed portfolio, our fixed income funds and our fixed income exchange-traded funds, and excludes investments classified as held for sale:
 Credit Spread Shift in Basis Points
As at June 30, 2020+50+100
 (in millions of U.S. dollars)
Total Market Value$9,512  $9,261  $9,022  
Market Value Change from Base(2.6)%(5.2)%
Change in Unrealized Value$(251) $(490) 
As at December 31, 2019+50+100
Total Market Value$9,648  $9,429  $9,218  
Market Value Change from Base(2.3)%(4.5)%
Change in Unrealized Value$(219) $(430) 

Credit Risk
Credit risk relates to the uncertainty of a counterparty’s ability to make timely payments in accordance with contractual terms of the instrument or contract. We are exposed to direct credit risk primarily within our portfolios of fixed maturity and short-term investments, and through customers, brokers and reinsurers in the form of premiums receivable, reinsurance balances recoverable on paid and unpaid losses, respectively, as discussed below.

Fixed Maturity and Short-Term Investments
As a holder of $8.8 billion of fixed maturity and short-term investments, we also have exposure to credit risk as a result of investment ratings downgrades or issuer defaults. In an effort to mitigate this risk, our investment portfolio consists primarily of investment grade-rated, liquid, fixed maturity investments of short-to-medium duration and mutual funds. A table of credit ratings for our fixed maturity and short-term investments is in Note 5 - "Investments" in the notes to our unaudited condensed consolidated financial statements included within Item 1 of this Quarterly Report on Form 10-Q. As of June 30, 2020, 38.6% of our fixed maturity and short-term investment portfolio was rated AA or higher by a major rating agency (December 31, 2019: 39.1%) with 3.3% rated lower than BBB- (December 31, 2019: 4.3%). The portfolio as a whole, including cash, restricted cash, fixed maturity and short term investments and funds held - directly managed, had an average credit quality rating of A+ as of June 30, 2020 (December 31, 2019: A+).
In addition, we manage our portfolio pursuant to guidelines that follow what we believe are prudent standards of diversification. The guidelines limit the allowable holdings of a single issue and issuers and, as a result, we believe we do not have significant concentrations of credit risk.
A summary of our fixed maturity and short-term investments by credit rating is as follows:
Credit ratingJune 30, 2020December 31, 2019Change
AAA26.0 %26.0 %— %
AA12.6 %13.1 %(0.5)%
A36.2 %34.5 %1.7 %
BBB21.6 %21.9 %(0.3)%
Non-investment grade3.3 %4.3 %(1.0)%
Not rated0.3 %0.2 %0.1 %
Total100.0 %100.0 %
Average credit ratingA+A+
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Reinsurance Balances Recoverable
We have exposure to credit risk as it relates to our reinsurance balances recoverable on paid and unpaid losses. Our insurance subsidiaries remain liable to the extent that retrocessionaires do not meet their contractual obligations and, therefore, we evaluate and monitor concentration of credit risk among our reinsurers. A discussion of our reinsurance balances recoverable is in Note 7 - "Reinsurance Balances Recoverable on Paid and Unpaid Losses" in the notes to our unaudited condensed consolidated financial statements included within Item 1 of this Quarterly Report on Form 10-Q.

Funds Held
Under funds held arrangements, the reinsured company has retained funds that would otherwise have been remitted to our reinsurance subsidiaries. The funds balance is credited with investment income and losses payable are deducted. We are subject to credit risk if the reinsured company is unable to honor the value of the funds held balances, such as in the event of insolvency. However, we generally have the contractual ability to offset any shortfall in the payment of the funds held balances with amounts owed by us to the reinsured for losses payable and other amounts contractually due. Our funds held are shown under two categories on the consolidated balance sheets, where funds held upon which we receive the underlying portfolio economics are shown as "Funds held - directly managed", and funds held where we receive a fixed crediting rate are shown as "Funds held by reinsured companies." Both types of funds held are subject to credit risk. We routinely monitor the creditworthiness of reinsured companies with whom we have funds held arrangements. As of June 30, 2020, we had a significant concentration of $965.5 million with one reinsured company which has financial strength credit ratings of A+ from A.M. Best and AA from Standard & Poor's.

Equity Price Risk
Our portfolio of equity investments, excluding our fixed income exchange-traded funds but including the equity funds and call options on equities included in other investments (collectively, "equities at risk"), has exposure to equity price risk, which is the risk of potential loss in fair value resulting from adverse changes in stock prices. Our fixed income exchange-traded funds are excluded from the below analysis and have been included within the interest rate and credit spread risk analysis, as the exchange-traded funds are part of our fixed income investment strategy. Our global equity portfolio is correlated with a blend of the S&P 500 and MSCI World indices, and changes in this blend of indices would approximate the impact on our portfolio. The following table summarizes the aggregate hypothetical change in fair value from a 10% decline in the overall market prices of our equities at risk:
June 30, 2020December 31, 2019Change
(in millions of U.S. dollars)
Publicly traded equity investments in common and preferred stocks$274.4  $327.9  $(53.5) 
Privately held equity investments in common and preferred stocks271.0  265.8  5.2  
Private equity funds315.1  323.5  (8.4) 
Equity funds368.3  410.1  (41.8) 
Call options on equity—  0.1  (0.1) 
Fair value of equities at risk$1,228.8  $1,327.4  $(98.6) 
Impact of 10% decline in fair value$122.9  $132.7  $(9.8) 

In addition to the above, as of June 30, 2020, we had investments of $1.8 billion (December 31, 2019: $1.1 billion) in hedge funds, included within our other investments, at fair value, that have exposure, among other items, to equity price risk.
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Foreign Currency Risk
The table below summarizes our net exposures to foreign currencies:
AUDCADEURGBPOtherTotal
As of June 30, 2020(in millions of U.S. dollars)
Total net foreign currency exposure$(0.2) $7.3  $(5.8) $30.0  $(10.0) $21.3  
Pre-tax impact of a 10% movement of the U.S. dollar(1)
$—  $0.7  $(0.6) $3.0  $(1.0) $2.1  
As of December 31, 2019
Total net foreign currency exposure$20.2  $(10.6) $12.9  $(11.9) $0.6  $11.2  
Pre-tax impact of a 10% movement of the U.S. dollar(1)
$2.0  $(1.1) $1.3  $(1.2) $0.1  $1.1  
(1)Assumes 10% change in the U.S. dollar relative to other currencies.

Through our subsidiaries located in various jurisdictions, we conduct our insurance and reinsurance operations in a variety of non-U.S. currencies. We have the following exposures to foreign currency risk:
Transaction Risk: The functional currency for the majority of our subsidiaries is the U.S. dollar. Within these entities, any fluctuations in foreign currency exchange rates relative to the U.S. dollar has a direct impact on the valuation of our assets and liabilities denominated in other currencies. All changes in foreign exchange rates, with the exception of non-U.S. dollar AFS investments, are recognized in our consolidated statements of earnings. Changes in foreign exchange rates relating to non-U.S. dollar AFS investments are recorded in accumulated other comprehensive income (loss) in shareholders’ equity. Our subsidiaries with non-U.S. dollar functional currencies are also exposed to fluctuations in foreign currency exchange rates relative to their own functional currency.
Translation Risk: Our net investments in certain European, British, and Australian subsidiaries have functional currencies of the Euro, British pound and Australian dollar, respectively. The foreign exchange gain or loss resulting from the translation of their financial statements from their respective functional currency into U.S. dollars is recorded in the cumulative translation adjustment account, which is a component of accumulated other comprehensive income (loss) in shareholders’ equity.
Our foreign currency policy is to broadly manage, where possible, our foreign currency risk by:
Seeking to match our liabilities under insurance and reinsurance policies that are payable in foreign currencies with assets that are denominated in such currencies, subject to regulatory constraints.
Selectively utilizing foreign currency forward contracts to mitigate foreign currency risk.
Borrowing to hedge the foreign currency exposure on our net investment in certain of our subsidiaries whose functional currency is denominated in non-U.S. dollars, which is referred to as a non-derivative hedge.
The instruments we use to manage foreign currency risk are discussed in Note 6 - "Derivatives and Hedging Instruments" in the notes to our unaudited condensed consolidated financial statements included within Item 1 of this Quarterly Report on Form 10-Q. To the extent our foreign currency exposure is not matched or hedged, we may experience foreign exchange losses or gains, which would be reflected in our consolidated results of operations and financial condition.

Effects of Inflation
Inflation may have a material effect on our consolidated results of operations by its effect on our assets and our liabilities. Inflation could lead to higher interest rates, resulting in a decrease in the market value of our fixed maturity portfolio. We may choose to hold our fixed maturity investments to maturity, which would result in the unrealized gains or losses accreting back over time. Inflation may also affect the value of certain of our liabilities, primarily our estimate for losses and LAE, such as our cost of claims which includes medical treatments, litigation costs and judicial awards. Although our estimate for losses and LAE is established to reflect the likely payments in the future, we would be subject to the risk that inflation could cause these amounts to be greater than the current estimate for losses and LAE. We seek to take this into account when setting reserves and pricing new business.
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ITEM 4. CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures
Under the supervision and with the participation of management, including our Chief Executive Officer and our Chief Financial Officer, we evaluated the effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) of the Exchange Act) as of June 30, 2020. Based on that evaluation, our Chief Executive Officer and our Chief Financial Officer have concluded that we maintained effective disclosure controls and procedures to provide reasonable assurance that information required to be disclosed by us in reports that we file or submit under the Exchange Act is recorded, processed, summarized and timely reported as specified in the rules and forms of the U.S. Securities and Exchange Commission and is accumulated and communicated to our management, including the Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure.

Changes in Internal Control Over Financial Reporting
There were no changes in our internal control over financial reporting that occurred during the six months ended June 30, 2020 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.
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PART II — OTHER INFORMATION
ITEM 1. LEGAL PROCEEDINGS
For a discussion of legal proceedings, see Note 21 - "Commitments and Contingencies" in the notes to our unaudited condensed consolidated financial statements included in Item 1 of this Quarterly Report on Form 10-Q, which is incorporated herein by reference.

ITEM 1A. RISK FACTORS
Our results of operations and financial condition are subject to numerous risks and uncertainties described in “Risk Factors” included in Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2019. The risk factors identified therein have not materially changed, except as set forth below:
The impact of COVID-19 and related risks has adversely affected our business, results of operations, financial condition, and liquidity and capital resources, and any future impact on our business is difficult to predict at this time.
The ongoing COVID-19 pandemic has caused significant disruption to the economy and financial markets globally, and the full extent of the potential impacts of COVID-19 are not yet known. Our results of operations, financial condition, and liquidity and capital resources have been adversely impacted by the COVID-19 pandemic, and the future impact of the pandemic is difficult to predict. In particular, we believe we are subject to the following risks related to the COVID-19 pandemic:
Investments. Due in large part to the uncertainty caused by the COVID-19 pandemic in global financial markets, our investment portfolio has experienced significant volatility. In the first quarter of 2020, we experienced significant unrealized losses (largely due to widening credit spreads on fixed income investments and changes in the fair value of our equity investments), heightened credit risk, and declines in yields on our fixed income investments. Although these unrealized losses reversed during the second quarter, our investment portfolios may continue to experience significant volatility and could be adversely impacted by unfavorable market conditions caused by the COVID-19 pandemic, which could cause continued volatility in our results of operations and negatively impact our financial condition.
Debt and Equity Financing. As a result of the economic conditions caused by the COVID-19 pandemic, capital and credit markets continue to experience volatility that could negatively impact our ability to raise additional capital through the debt or equity markets or through bank or other debt financing. If we are unable obtain adequate capital on suitably attractive terms, or at all, we may be unable to implement our future growth or operating plans and our business, financial condition, and results of operations could be materially adversely affected.
Liquidity. Due to the change in fair value of our investments caused by the COVID-19 pandemic, we and our insurance and reinsurance subsidiaries may need additional capital to maintain compliance with regulatory capital requirements and/or be required to post additional collateral under existing reinsurance arrangements, which could reduce our liquidity. Due to current market conditions, we may not be able to secure letters of credit to satisfy certain of our existing collateral obligations, including through the extension or renewal of existing facilities, or such letters of credit may only be available on unfavorable terms. In addition, we may experience a reduction in the amount of available distribution or dividend capacity from our regulated insurance and reinsurance subsidiaries, which would also reduce liquidity.
Acquisitions and New Business. Our ability to complete acquisitions of companies and portfolios of insurance and reinsurance business in our Non-life Run-off segment may be adversely impacted by circumstances created by the COVID-19 pandemic, including as a result of the limited availability of external financing or funding to acquire new business, the willingness of counterparties to engage in transactions in light of uncertain economic conditions or financial stress, and the additional scrutiny of regulators whose approval is required to complete transactions due to the uncertain economic conditions, as well as other factors that we are unable to predict.
Active Underwriting Segments. We have experienced underwriting losses relating to the COVID-19 pandemic in our Atrium and StarStone segments across various lines of business. Although we have established reserves against these losses as of June 30, 2020, given the uncertainty surrounding the COVID-19 pandemic and its impact on the insurance industry, our preliminary estimates of losses and loss adjustment expenses and estimates of reinsurance recoverable arising from the COVID-19 pandemic may materially change. Unanticipated issues relating to claims and coverage may emerge, which could adversely affect our business by increasing the scope of coverage beyond our intent and/or increasing the frequency and severity of claims.
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Operational Disruptions. We rely on the continued productivity of our senior executive team, our employees, and our agents, brokers, third party administrators, suppliers and outsourcing providers to carry out our operations. If any of these people are unable to continue to work productively, or at all, due to illness, government restrictions, remote working conditions, or other disruptions related to the COVID-19 pandemic, our ability to conduct our operations may be adversely affected. In addition, like many other companies, the vast majority of our employees are working remotely, and we are therefore more dependent on our information technology systems and the continued access by our employees and service providers to reliable internet and telecommunications systems. We will be adversely affected if these systems do not function effectively or are disrupted due to heightened demand, cybersecurity attacks and data security incidents, or for any other related reason. These types of operational disruptions that impact our people and/or systems and others we may not foresee, would negatively impact our ability to settle claims efficiently, complete acquisitions, integrate our acquired businesses, manage our investments, or otherwise conduct our business.
Circumstances caused by the COVID-19 pandemic are complex, uncertain and rapidly evolving. We therefore may not be able to accurately predict the longer-term effects that the COVID-19 pandemic may have on our financial condition or results of operations. To the extent the COVID-19 pandemic adversely affects our financial condition or results of operations, it may also have the effect of heightening additional risks described in Part I, Item 1A, Risk Factors, of our Annual Report on Form 10-K for the year ended December 31, 2019.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS
Issuer Purchases of Equity Securities
The following table provides information about ordinary shares acquired by the Company during the three months ended June 30, 2020.
Period
Total Number of Shares Purchased(1)
Average Price Paid per ShareTotal Number of Shares Purchased as Part of Publicly Announced Plans or ProgramsMaximum Number (or Approximate Dollar Value) of Shares that May Yet be Purchased Under the Program
April 1, 2020 - April 30, 2020$—  $—  $—  
May 1, 2020 - May 31, 2020$—  $—  $—  
June 1, 2020 - June 30, 20202,163$157.58  $—  $—  
2,163  —  $—  
(1) Consists of shares withheld from employees in order to facilitate the payment of withholding taxes on restricted shares granted pursuant to our equity incentive plan. The price for the shares is their fair market value, as determined by reference to the closing price of our ordinary shares on the vesting date.

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ITEM 6. EXHIBITS
Exhibit No.  Description
  Memorandum of Association of Enstar Group Limited (incorporated by reference to Exhibit 3.1 of the Company’s Form 10-K/A filed on May 2, 2011).
  Fifth Amended and Restated Bye-Laws of Enstar Group Limited (incorporated by reference to Exhibit 3.1 of the Company’s Form 8-K filed on June 13, 2019).
  Certificate of Designations of Series C Participating Non-Voting Perpetual Preferred Stock (incorporated by reference to Exhibit 3.1 of the Company’s Form 8-K filed on June 17, 2016).
Certificate of Designations of 7.00% fixed-to-floating rate perpetual non-cumulative preference shares, Series D (incorporated by reference to Exhibit 4.1 of the Company’s Form 8-K filed on June 27, 2018).
Certificate of Designations of 7.00% perpetual non-cumulative preference shares, Series E (incorporated by reference to Exhibit 4.1 of the Company’s Form 8-K filed on November 21, 2018).
Second Amendment to Letter of Credit Facility Agreement, dated as of June 3, 2020, by and among Enstar Group Limited and certain of its subsidiaries, National Australia Bank Limited, London Branch, National Australia Bank Limited, The Bank of Nova Scotia and each of the lenders party thereto (incorporated by reference to Exhibit 10.1 of the Company’s Form 8-K filed on June 9, 2020).
Stock Purchase Agreement, dated as of June 10, 2020, by and among StarStone Finance Limited, Core Specialty Insurance Holdings, Inc. and North Bay Holdings Limited (incorporated by reference to Exhibit 10.1 of the Company’s Form 8-K filed on June 11, 2020).
Transition Agreement, dated July 17, 2020, by and between Enstar Group Limited and Guy Bowker (incorporated by reference to Exhibit 10.1 of the Company’s Form 8-K filed on July 17, 2020).
  Certification of Chief Executive Officer pursuant to Rule 13a-14(a) or Rule 15d-14(a) of the Securities Exchange Act of 1934 as adopted under Section 302 of the Sarbanes-Oxley Act of 2002.
  Certification of Chief Financial Officer pursuant to Rule 13a-14(a) or Rule 15d-14(a) of the Securities Exchange Act of 1934 as adopted under Section 302 of the Sarbanes-Oxley Act of 2002.
  Certification of Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
  Certification of Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INSXBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
101.SCHXBRL Taxonomy Extension Schema
101.CALXBRL Taxonomy Extension Calculation Linkbase
101.LABXBRL Taxonomy Extension Label Linkbase
101.DEFXBRL Taxonomy Extension Definition Linkbase
101.PREXBRL Taxonomy Extension Presentation Linkbase
104Cover page Interactive Data File (embedded within the Inline XBRL document and included in Exhibit 101)
________________________________
*  filed herewith
** furnished herewith
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SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized on August 10, 2020.
ENSTAR GROUP LIMITED
By:
/S/ GUY BOWKER
Guy Bowker
Chief Financial Officer, Authorized Signatory, Principal Financial Officer and Principal Accounting Officer

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