Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Investments:
Equity securities	$ 2,163,350	$ 2,505,496
Debt securities	15,579,894	14,211,745
Short-term investments	636,130	914,776
Marketable Securities, Total	18,379,374	17,632,017
Commercial mortgage loans	691,881	686,206
Other invested assets	445,828	573,605
Total investments	19,517,083	18,891,828
Cash	1,230,579	1,179,098
Accrued investment income	94,938	96,516
Premium balances receivable	1,092,284	948,010
Reinsurance recoverables	1,696,996	1,681,962
Ceded unearned premiums	310,799	248,153
Deferred acquisition costs	574,662	522,577
Property and equipment at cost, net of accumulated depreciation and amortization	270,178	205,397
Goodwill	612,394	523,021
Intangible assets, net of amortization	799,010	685,953
Current taxes receivable	0	4,081
Net deferred tax assets	6,046	5,860
Funds held under reinsurance agreements	808,343	755,515
Other assets	1,439,259	1,183,633
Total assets	28,452,571	26,931,604
Liabilities, Redeemable Noncontrolling Interests and Stockholders’ Equity
Loss and loss adjustment expenses	12,681,515	11,928,359
Unearned premiums	2,888,553	2,566,170
Senior notes and other debt	2,041,610	1,751,113
Reinsurance payable	201,486	188,399
Current taxes payable	5,773	0
Other liabilities	1,800,360	1,516,076
Total liabilities	19,619,297	17,950,117
Redeemable noncontrolling interests	236,879	204,753
Common stock	17,460	17,460
Contributed capital	3,609,789	3,608,638
Accumulated other comprehensive income	375,310	171,350
Treasury stock	(1,565,426)	(1,455,877)
Retained earnings	6,159,262	6,435,163
Total stockholders’ equity attributable to Alleghany stockholders	8,596,395	8,776,734
Total liabilities, redeemable noncontrolling interests and stockholders’ equity	$ 28,452,571	$ 26,931,604