Consolidated Statements of Financial Condition - USD ($)		Dec. 31, 2021	Dec. 31, 2020
Assets
Cash and cash equivalents		$ 914,343,000	$ 645,169,000
Cash collateral pledged		47,494,000	110,743,000
Segregated Cash		194,701,000	185,141,000
Securities owned, at fair value ($1,750,346 and $1,524,136 were pledged to various parties)		2,660,742,000	2,001,602,000
Securities Purchased under Agreements to Resell		0	191,000
Receivable on derivative contracts, at fair value		286,135,000	51,482,000
Securities borrowed		1,704,603,000	1,908,187,000
Other investments ($137,986 and $133,454 at fair value, respectively)		274,111,000	255,027,000
Deposits with clearing organizations, brokers and banks		111,857,000	104,952,000
Receivable from brokers, dealers and clearing organizations, net of allowance of $636 and $885, respectively		1,614,347,000	1,729,744,000
Receivable from customers, net of allowance of $687 and $530, respectively		159,418,000	103,963,000
Fees receivable, net of allowance of $886 and $3,348, respectively		145,809,000	160,349,000
Due from related parties		31,449,000	21,068,000
Fixed assets, net of accumulated depreciation and amortization of $50,017 and $40,670, respectively		25,976,000	33,023,000
Operating lease right-of-use assets		93,655,000	78,241,000
Goodwill		234,005,000	147,084,000
Intangible assets, net of accumulated amortization of $33,219 and $37,884, respectively		44,167,000	24,403,000
Deferred tax asset, net		21,765,000	9,030,000
Other assets		84,828,000	54,884,000
Consolidated Funds
Cash and cash equivalents, Consolidated Funds		296,000	417,000
Securities owned, at fair value		0	10,622,000
Other Investments, Consolidated Funds		99,067,000	192,670,000
Other assets, Consolidated Funds		46,000	207,000
Total Assets		8,748,814,000	7,828,199,000
Liabilities
Securities sold, not yet purchased, at fair value		1,201,448,000	728,115,000
Securities Sold under Agreements to Repurchase		63,469,000	5,036,000
Payable for derivative contracts, at fair value		60,163,000	76,160,000
Securities Loaned		1,586,572,000	2,476,414,000
Payables to brokers, dealers and clearing organizations		586,553,000	415,143,000
Payable to customers		2,432,612,000	1,680,326,000
Commission management payable		102,990,000	116,987,000
Compensation payable		443,580,000	373,339,000
Operating lease liabilities		98,883,000	82,735,000
Notes payable and other debt	[1]	623,371,000	383,067,000
Convertible debt		0	80,808,000	[2]
Fees payable		16,483,000	43,833,000
Due to related parties		0	51,000
Accounts payable, accrued expenses and other liabilities		236,088,000	196,479,000
Consolidated Funds
Due to related parties		23,000	7,000
Accounts payable, accrued expenses and other liabilities		225,000	578,000
Total Liabilities		7,452,460,000	6,659,078,000
Commitments and Contingencies
Stockholders' equity
Additional paid-in capital		1,100,667,000	1,130,138,000
(Accumulated deficit) retained earnings		461,982,000	185,901,000
Accumulated other comprehensive income (loss)		(2,000)	(7,000)
Less: Class A common stock held in treasury, at cost, 28,047,929 and 22,619,863 shares as of December 31, 2021 and 2020, respectively.		(547,100,000)	(346,900,000)
Cowen Inc. Stockholders' Equity		1,015,869,000	969,497,000
Nonredeemable non-controlling interests		159,735,000	199,624,000
Permanent Equity		1,175,604,000	1,169,121,000
Total Liabilities and Stockholders' Equity		8,748,814,000	7,828,199,000
Portfolio Funds
Assets
Other investments ($137,986 and $133,454 at fair value, respectively)	[3]	137,986,000	133,454,000
Consolidated Funds
Other Investments, Consolidated Funds	[3]	99,067,000	192,670,000
Convertible Preferred Stock
Consolidated Funds
Redeemable Series A Convertible Preferred stock, par value $0.01 per share: 10,000,000 shares authorized, 120,750 shares issued and outstanding as of December 31, 2021 (aggregate liquidation preference of $120,750)		120,750,000	0
Preferred stock		0	1,000
Common Stock Class A
Stockholders' equity
Common stock		334,000	334,000
Less: Class A common stock held in treasury, at cost, 28,047,929 and 22,619,863 shares as of December 31, 2021 and 2020, respectively.		(547,112,000)	(346,870,000)
Common Stock Class B
Stockholders' equity
Common stock		$ 0	$ 0

[1] The carrying amount of the notes payable and other debt includes an unamortized discount and unamortized premium of $2.8 million and $0.3 million as of December 31, 2021, respectively and unamortized premium of $0.4 million as of December 31, 2020.

[2] The carrying amount of the convertible debt includes an unamortized discount of $6.7 million as of December 31, 2020.

[3] In accordance with US GAAP, portfolio funds are measured at fair value using the net asset value per share (or its equivalent) as a practical expedient are not classified in the fair value hierarchy. Carried interest and equity method investments presented in the table above are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the consolidated statement of financial condition.