REVENUE (Tables)

9 Months Ended

Sep. 30, 2021

Revenue from Contract with Customer [Abstract]

REVENUE DISAGGREGATED BY REVENUE SOURCE

The following table presents our revenue disaggregated by revenue source:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2020		2021		2020		2021
Transaction-based revenues:
Options	$	126,769	$	163,750	$	297,677	$	526,214
Cryptocurrencies	5,282		50,723		14,840		371,413
Equities	68,818		50,459		171,013		235,772
Other	938		1,865		1,321		5,004
Total transaction-based revenues	201,807		266,797		484,851		1,138,403
Net interest revenues:
Securities lending	27,891		33,495		63,029		108,569
Margin interest	21,288		34,238		40,075		93,199
Interest on segregated cash and securities	1,359		1,071		11,991		3,112
Other interest revenue	743		853		3,259		3,050
Interest expenses related to credit facilities	(875)		(6,252)		(3,934)		(14,319)
Total net interest revenues	50,406		63,405		114,420		193,611
Other revenues	17,317		34,721		42,020		120,416
Total net revenues	$	269,530	$	364,923	$	641,291	$	1,452,430

RECEIVABLES AND CONTRACT BALANCES

The table below sets forth contract receivables balances for the period indicated:

(in thousands)	Contract Receivables
Beginning of period, January 1, 2021	$	111,871
End of period, September 30, 2021	115,298
Increase in contract receivables during the period	$	3,427

The table below sets forth contract liabilities balances for the period indicated:

(in thousands)	Contract Liabilities
Beginning of period, January 1, 2021	$	2,060
End of period, September 30, 2021	3,298
Increase in contract liabilities during the period	$	1,238