Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Revenues:
Commissions	$ 415,172	$ 377,288
Principal transactions	112,849	114,929
Fees from related parties	4,421	3,957
Data, network and post-trade	30,903	27,122
Interest and dividend income	9,764	5,315
Other revenues	5,505	4,256
Total revenues	578,614	532,867
Expenses:
Compensation and employee benefits	290,842	267,214
Equity-based compensation and allocations of net income to limited partnership units and FPUs	96,081	81,373
Total compensation and employee benefits	386,923	348,587
Occupancy and equipment	40,806	41,165
Fees to related parties	7,215	8,440
Professional and consulting fees	14,259	15,701
Communications	30,008	27,939
Selling and promotion	16,771	14,616
Commissions and floor brokerage	17,392	15,265
Interest expense	20,136	15,742
Other expenses	14,558	12,508
Total expenses	548,068	499,963
Other income (losses), net:
Gains (losses) on equity method investments	1,790	2,062
Other income (loss)	38,762	(1,735)
Total other income (losses), net	40,552	327
Income (loss) from operations before income taxes	71,098	33,231
Provision (benefit) for income taxes	22,057	12,061
Consolidated net income (loss)	49,041	21,170
Less: Net income (loss) attributable to noncontrolling interest in subsidiaries	(169)	2,192
Net income (loss) available to common stockholders	49,210	18,978
Basic earnings (loss) per share
Net income (loss) attributable to common stockholders	$ 46,378	$ 18,978
Basic earnings (loss) per share (in dollars per share)	$ 0.10	$ 0.05
Basic weighted-average shares of common stock outstanding (in shares)	470,517	375,220
Fully diluted earnings (loss) per share
Net income (loss) for fully diluted shares	$ 46,417	$ 24,155
Fully diluted earnings (loss) per share (in dollars per share)	$ 0.10	$ 0.05
Fully diluted weighted-average shares of common stock outstanding (in shares)	477,973	501,067