Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities
Net income	$ 97,445	$ 81,565
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	44,450	40,966
Stock-based compensation expense	13,712	10,760
Deferred taxes	11,640	15,997
(Increase) decrease in operating assets:
Receivable from/payable to brokers and dealers and clearing organizations, net	(20,573)	(101)
Deposits with clearing organizations	(14,996)	906
Accounts receivable	(36,437)	(38,831)
Receivable from/payable to affiliates, net	692	(6,491)
Other assets	(1,079)	7,226
Increase (decrease) in operating liabilities:
Securities sold under agreements to repurchase	20,511	0
Accrued compensation	(81,025)	(59,275)
Deferred revenue	2,766	3,995
Accounts payable, accrued expenses and other liabilities	8,137	770
Employee equity compensation payable	0	(1,915)
Net cash provided by operating activities	45,243	55,572
Cash flows from investing activities
Purchases of furniture, equipment, software and leasehold improvements	(9,061)	(4,359)
Capitalized software development costs	(8,979)	(8,266)
Net cash used in investing activities	(18,040)	(12,625)
Cash flows from financing activities
Share repurchases pursuant to the Share Repurchase Program	(47,323)	0
Proceeds from stock-based compensation exercises	692	46,397
Dividends	(16,350)	(16,030)
Distributions to non-controlling interests	(2,178)	(2,504)
Payroll taxes paid for stock-based compensation	(93,927)	(45,464)
Payments on tax receivable agreement liability	(8,995)	(6,849)
Net cash used in financing activities	(168,081)	(24,450)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(3,109)	161
Net increase (decrease) in cash, cash equivalents and restricted cash	(143,987)	18,658
Cash, cash equivalents and restricted cash
Beginning of period	973,048	792,280
End of period	829,061	810,938
Supplemental disclosure of cash flow information
Income taxes paid, net of (refunds)	2,764	(4,175)
Non-cash financing activities
Withholding taxes payable relating to stock-based compensation settlements included in accrued compensation	1,831	0
Reconciliation of cash, cash equivalents and restricted cash as shown on the statements of financial condition:
Cash and cash equivalents	828,061
Restricted cash	1,000
Cash, cash equivalents and restricted cash shown in the statement of cash flows	829,061	810,938
Adjusted For Refinitiv Transaction
Non-cash financing activities
Establishment of liabilities under tax receivable agreement	5,659	27,666
Deferred tax asset	$ 44,335	$ 99,260