Consolidated Statements of Income - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues
Gross revenue		$ 212,870	$ 200,981	$ 659,583	$ 578,258
Expenses
Employee compensation and benefits		83,967	79,644	263,353	252,912
Depreciation and amortization		38,857	35,133	113,952	102,928
Technology and communications		12,037	9,527	34,397	29,086
General and administrative		8,657	7,507	24,520	25,961
Professional fees		7,388	7,272	20,908	20,981
Occupancy		3,443	3,640	10,678	10,900
Total expenses		154,349	142,723	467,808	442,768
Operating income		58,521	58,258	191,775	135,490
Net interest income (expense)		(349)	636	64	1,669
Income before taxes		58,172	58,894	191,839	137,159
Provision for income taxes		(11,124)	(10,316)	(39,898)	(21,413)
Net income		47,048	48,578	151,941	115,746
Net income attributable to Tradeweb Markets Inc.		$ 36,812	$ 29,612	$ 111,236	42,440
EPS calculations for post-IPO and pre-IPO periods
Basic (in dollars per share)		$ 0.20	$ 0.21	$ 0.63
Diluted (in dollars per share)		$ 0.19	$ 0.20	$ 0.60
Weighted average shares outstanding
Basic (in shares)	[1],[2]	187,774,170	142,935,206	177,257,994
Diluted (in shares)	[1],[2]	194,955,695	151,362,643	185,026,108
Tradeweb Markets LLC
Expenses
Less: Net income attributable to non-controlling interests		$ 0	$ 0	$ 0	$ 42,352
EPS calculations for post-IPO and pre-IPO periods
Basic (in dollars per share)	[1],[3]				$ 0.19
Diluted (in dollars per share)	[1],[3]				$ 0.19
Weighted average shares outstanding
Basic (in shares)	[1],[3]				222,222,197
Diluted (in shares)	[1],[3]				223,320,457
Tradeweb Markets Inc
Expenses
Net income		47,048	48,578	151,941	$ 73,394
Less: Net income attributable to non-controlling interests		$ 10,236	$ 18,966	$ 40,705	$ 30,954
EPS calculations for post-IPO and pre-IPO periods
Basic (in dollars per share)		$ 0.20	$ 0.21	$ 0.63	$ 0.30	[1],[2]
Diluted (in dollars per share)		$ 0.19	$ 0.20	$ 0.60	$ 0.28	[1],[2]
Weighted average shares outstanding
Basic (in shares)		187,774,170	142,935,206	177,257,994	142,934,221	[1],[2]
Diluted (in shares)		194,955,695	151,362,643	185,026,108	151,158,760	[1],[2]
Transaction fees
Revenues
Gross revenue		$ 120,582	$ 112,746	$ 383,552	$ 319,338
Subscription fees
Revenues
Gross revenue		36,217	35,387	105,706	104,398
Commissions
Revenues
Gross revenue		39,593	37,590	120,201	108,200
Refinitiv market data fees
Revenues
Gross revenue		14,273	13,251	43,466	40,252
Other
Revenues
Gross revenue		$ 2,205	$ 2,007	$ 6,658	$ 6,070

[1] In April 2019, the Company completed the Reorganization Transactions and the IPO, which, among other things, resulted in Tradeweb Markets Inc. becoming the successor of Tradeweb Markets LLC for financial reporting purposes. As a result, earnings per share information for the pre-IPO period is not comparable to the earnings per share information for the post-IPO period. Therefore, earnings per share information is being presented separately for the pre-IPO and post-IPO periods. See Note 15 – Earnings Per Share for additional information.

[2] Presents information for Tradeweb Markets Inc. (post-IPO period).

[3] Presents information for Tradeweb Markets LLC (pre-IPO period).