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MARKETABLE SECURITIES
3 Months Ended
Mar. 31, 2023
Investments, Debt and Equity Securities [Abstract]  
MARKETABLE SECURITIES MARKETABLE SECURITIES
Eversource holds marketable securities that are primarily used to fund certain non-qualified executive benefits.  The trusts that hold these marketable securities are not subject to regulatory oversight by state or federal agencies.  Eversource’s marketable securities also include the CYAPC and YAEC legally restricted trusts that each hold equity and available-for-sale debt securities to fund the spent nuclear fuel removal obligations of their nuclear fuel storage facilities. Equity and available-for-sale debt marketable securities are recorded at fair value, with the current portion recorded in Prepayments and Other Current Assets and the long-term portion recorded in Marketable Securities on the balance sheets.

Equity Securities: Unrealized gains and losses on equity securities held in Eversource's non-qualified executive benefit trust are recorded in Other Income, Net on the statements of income. The fair value of these equity securities as of March 31, 2023 and December 31, 2022 was $19.6 million and $20.0 million, respectively.  For the three months ended March 31, 2023 and 2022, there were unrealized gains of $0.8 million and unrealized losses of $4.4 million, respectively, recorded in Other Income, Net related to these equity securities.

Eversource's equity securities also include CYAPC's and YAEC's marketable securities held in spent nuclear fuel trusts, which had fair values of $170.9 million and $170.1 million as of March 31, 2023 and December 31, 2022, respectively.  Unrealized gains and losses for these spent nuclear fuel trusts are subject to regulatory accounting treatment and are recorded in Marketable Securities with the corresponding offset to long-term liabilities on the balance sheets, with no impact on the statements of income.

Available-for-Sale Debt Securities: The following is a summary of the available-for-sale debt securities:
As of March 31, 2023As of December 31, 2022
Eversource
(Millions of Dollars)
Amortized CostPre-Tax
Unrealized Gains
Pre-Tax
Unrealized
Losses
Fair ValueAmortized CostPre-Tax
Unrealized Gains
Pre-Tax
Unrealized
Losses
Fair Value
Debt Securities$196.5 $0.2 $(14.8)$181.9 $201.6 $0.1 $(16.2)$185.5 

Unrealized gains and losses on available-for-sale debt securities held in Eversource's non-qualified executive benefit trust are recorded in Accumulated Other Comprehensive Income, excluding amounts related to credit losses or losses on securities intended to be sold, which are recorded in Other Income, Net. There were $1.2 million of unrealized losses recorded on securities intended to be sold for the three months ended March 31, 2023 that were included in Other Income, Net. There have been no credit losses for the three months ended March 31, 2023 and 2022, and no allowance for credit losses as of March 31, 2023. Factors considered in determining whether a credit loss exists include adverse conditions specifically affecting the issuer, the payment history, ratings and rating changes of the security, and the severity of the impairment.  For asset-backed debt securities, underlying collateral and expected future cash flows are also evaluated. Debt securities included in Eversource's non-qualified benefit trust portfolio are investment-grade bonds with a lower default risk based on their credit quality.

Eversource's debt securities also include CYAPC's and YAEC's marketable securities held in spent nuclear fuel trusts in the amounts of $161.2 million and $163.2 million as of March 31, 2023 and December 31, 2022, respectively. Unrealized gains and losses for available-for-sale debt securities included in the CYAPC and YAEC spent nuclear fuel trusts are subject to regulatory accounting treatment and are recorded in Marketable Securities with the corresponding offset to long-term liabilities on the balance sheets, with no impact on the statements of income. Pre-tax unrealized gains and losses as of March 31, 2023 and December 31, 2022 primarily relate to the debt securities included in CYAPC's and YAEC's spent nuclear fuel trusts.

As of March 31, 2023, the contractual maturities of available-for-sale debt securities were as follows:
 
Eversource
(Millions of Dollars)
Amortized CostFair Value
Less than one year (1)
$39.8 $38.9 
One to five years42.5 41.1 
Six to ten years35.6 32.8 
Greater than ten years78.6 69.1 
Total Debt Securities$196.5 $181.9 

(1)    Amounts in the Less than one year category include securities in the CYAPC and YAEC spent nuclear fuel trusts, which are restricted and are classified in long-term Marketable Securities on the balance sheets. Amounts also include securities in Eversource’s non-qualified executive benefit trust, which are intended to be sold in 2023.

Realized Gains and Losses:  Realized gains and losses are recorded in Other Income, Net for Eversource's benefit trust and are offset in long-term liabilities for CYAPC and YAEC.  Eversource utilizes the specific identification basis method for the Eversource non-qualified benefit trust, and the average cost basis method for the CYAPC and YAEC spent nuclear fuel trusts to compute the realized gains and losses on the sale of marketable securities.
Fair Value Measurements:  The following table presents the marketable securities recorded at fair value on a recurring basis by the level in which they are classified within the fair value hierarchy:
Eversource
(Millions of Dollars)
As of March 31, 2023As of December 31, 2022
Level 1:    
Mutual Funds and Equities$190.5 $190.1 
Money Market Funds17.9 25.4 
Total Level 1$208.4 $215.5 
Level 2:  
U.S. Government Issued Debt Securities (Agency and Treasury)$91.5 $82.3 
Corporate Debt Securities44.2 46.1 
Asset-Backed Debt Securities8.5 8.6 
Municipal Bonds9.2 12.7 
Other Fixed Income Securities10.6 10.4 
Total Level 2$164.0 $160.1 
Total Marketable Securities$372.4 $375.6 

U.S. government issued debt securities are valued using market approaches that incorporate transactions for the same or similar bonds and adjustments for yields and maturity dates.  Corporate debt securities are valued using a market approach, utilizing recent trades of the same or similar instruments and also incorporating yield curves, credit spreads and specific bond terms and conditions.  Asset-backed debt securities include collateralized mortgage obligations, commercial mortgage backed securities, and securities collateralized by auto loans, credit card loans or receivables.  Asset-backed debt securities are valued using recent trades of similar instruments, prepayment assumptions, yield curves, issuance and maturity dates, and tranche information.  Municipal bonds are valued using a market approach that incorporates reported trades and benchmark yields.  Other fixed income securities are valued using pricing models, quoted prices of securities with similar characteristics, and discounted cash flows.