Consolidated Statements of Financial Condition - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Assets
Cash and cash equivalents	$ 389,930	$ 410,104
Restricted cash	1,200	1,200
Receivable from brokers and dealers and clearing organizations	747,660	174,591
Deposits with clearing organizations	12,101	11,427
Accounts receivable, net of allowance	95,398	87,192
Furniture, equipment, purchased software and leasehold improvements, net of accumulated depreciation and amortization	36,879	38,128
Right-of-use assets	29,038
Software development costs, net of accumulated amortization	173,066	170,582
Intangible assets, net of accumulated amortization	1,306,293	1,380,848
Goodwill	2,694,797	2,694,797
Receivable from affiliates	3,515	3,243
Deferred tax asset	103,153
Other assets	29,650	25,027
Total assets	5,622,680	4,997,139
Liabilities
Securities sold under agreements to repurchase	24,938
Payable to brokers and dealers and clearing organizations	713,020	171,214
Accrued compensation	94,652	120,158
Deferred revenue	28,557	27,883
Accounts payable, accrued expenses and other liabilities	44,650	42,548
Employee equity compensation payable	714	24,187
Lease liability	33,130
Payable to affiliates	3,737	5,009
Deferred tax liability	20,620	19,627
Tax receivable agreement liability	171,426
Total liabilities	1,135,444	410,626
Commitments and contingencies (Note 17)
Mezzanine Capital
Class C Shares and Class P(C) Shares		14,179
Stockholders' Equity/Members' Capital
Members’ capital		4,573,200
Additional paid-in capital	2,855,885
Accumulated other comprehensive income (loss)	(1,854)	(866)
Retained earnings	19,570
Total stockholders' equity attributable to Tradeweb Markets Inc./members' capital	2,873,603	4,572,334
Non-controlling interests	1,613,633
Total equity	4,487,236	4,572,334
Total liabilities and stockholders' equity/members' capital	5,622,680	$ 4,997,139
Class B common stock
Stockholders' Equity/Members' Capital
Common stock	1
Total equity	1
Class D common stock
Stockholders' Equity/Members' Capital
Common stock	1
Total equity	$ 1