Condensed Consolidated Statements of Financial Condition - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Assets
Cash and cash equivalents	$ 450,830	$ 596,291
Cash segregated under regulatory requirements	19,059	257,115
Securities owned	37,430	58,572
Marketable securities	348	349
Receivables from broker-dealers, clearing organizations, customers and related broker-dealers	1,818,893	304,022
Accrued commissions and other receivables, net	322,250	739,009
Loans, forgivable loans and other receivables from employees and partners, net	375,982	408,142
Fixed assets, net	199,349	216,024
Investments	30,782	38,008
Goodwill	486,885	556,211
Other intangible assets, net	212,048	287,157
Receivables from related parties	6,124	11,915
Other assets	452,841	480,427
Assets held for sale	1,002,786	0
Total assets	5,415,607	3,953,242
Liabilities, Redeemable Partnership Interest, and Equity
Short-term borrowings	3,677	3,849
Repurchase agreements	2,997	0
Accrued compensation	169,183	220,726
Payables to broker-dealers, clearing organizations, customers and related broker-dealers	1,662,463	179,721
Payables to related parties	93,560	36,921
Accounts payable, accrued and other liabilities	627,994	1,364,119
Notes payable and other borrowings	1,352,531	1,315,935
Liabilities held for sale	799,366	0
Total liabilities	4,711,771	3,121,271
Commitments, contingencies and guarantees (Note 20)
Redeemable partnership interest	18,671	20,674
Stockholders’ equity:
Additional paid-in capital	2,421,098	2,375,113
Treasury stock, at cost: 92,607 and 50,527 shares of Class A common stock at September 30, 2021 and December 31, 2020, respectively	(513,963)	(315,313)
Retained deficit	(1,244,718)	(1,280,828)
Accumulated other comprehensive income (loss)	(36,232)	(28,930)
Total stockholders’ equity	630,904	754,236
Noncontrolling interest in subsidiaries	54,261	57,061
Total equity	685,165	811,297
Total liabilities, redeemable partnership interest, and equity	5,415,607	3,953,242
Class A Common Stock
Stockholders’ equity:
Common stock value	4,260	3,735
Class B Common Stock
Stockholders’ equity:
Common stock value	$ 459	$ 459