Consolidated Statements of Financial Condition - USD ($)	Dec. 31, 2017		Dec. 31, 2016
Assets
Cash and cash equivalents	$ 130,052,000		$ 110,990,000
Cash collateral pledged	17,888,000		13,342,000
Segregated Cash	116,268,000		1,024,000
Securities owned, at fair value	673,221,000		700,876,000
Receivable on derivative contracts, at fair value	69,177,000		22,901,000
Securities Borrowed	443,148,000		0
Other investments	141,548,000		157,279,000
Deposits with clearing organizations, brokers and banks	93,996,000		8,939,000
Receivable from brokers, dealers and clearing organizations	508,178,000		78,898,000
Receivables from Customers, net of allowance of $1,550 and $0, respectively	49,891,000		0
Fees receivable, net of allowance of $1,736 and $0, respectively	111,784,000		45,883,000
Due from related parties	34,814,000		39,629,000
Fixed assets, net of accumulated depreciation and amortization of $28,355 and $23,867, respectively	40,496,000		42,408,000
Goodwill	60,678,000		60,678,000
Intangible assets, net of accumulated amortization of $33,081 and $29,418, respectively	29,955,000		25,769,000
Deferred tax assets, net	116,323,000		165,656,000
Other assets	88,268,000		38,406,000
Consolidated Funds
Cash and cash equivalents	21,988,000		17,761,000
Securities owned, at fair value	165,916,000		79,237,000
Receivable on derivatives, Consolidated Funds	2,520,000		893,000
Other investments	374,111,000		401,465,000
Receivable from brokers, Consolidated Funds	5,644,000		5,978,000
Other assets	388,000		511,000
Total Assets	3,296,252,000		2,018,523,000
Liabilities
Securities sold, not yet purchased, at fair value	342,527,000		266,090,000
Payable for derivative contracts, at fair value	42,750,000		20,762,000
Securities Loaned	456,831,000		0
Payable to brokers, dealers and clearing organizations	252,153,000		210,309,000
Payables to Customers	352,467,000		0
Commission management payable	70,451,000		3,590,000
Compensation payable	150,206,000		98,084,000
Notes payable and other debt	173,458,000		77,030,000
Convertible debt	141,502,000		130,029,000
Fees payable	8,047,000		3,272,000
Due to related parties	570,000		573,000
Accounts payable, accrued expenses and other liabilities	96,533,000		47,525,000
Consolidated Funds
Securities sold, not yet purchased, at fair value, Consolidated Funds	0	[1]	883,000
Payable for derivative contracts, at fair value, Consolidated Funds	7,130,000		572,000
Payable to brokers, Consolidated Funds	751,000		3,700,000
Contributions received in advance	0		2,000,000
Capital withdrawals payable	11,931,000		1,408,000
Accounts payable, accrued expenses and other liabilities	322,000		841,000
Total Liabilities	2,107,629,000		866,668,000
Commitments and Contingencies
Redeemable non-controlling interests	440,604,000		379,205,000
Stockholders' equity
Additional paid-in capital	1,004,664,000		928,646,000
(Accumulated deficit) retained earnings	(70,116,000)		(2,442,000)
Accumulated other comprehensive income (loss)	(8,000)		(2,000)
Less: Class A common stock held in treasury, at cost, 10,593,191 and 9,810,802 shares as of June 30, 2017 and December 31, 2016, respectively.	(186,846,000)		(153,845,000)
Total Stockholders' Equity	748,019,000		772,650,000
Total Liabilities and Stockholders' Equity	3,296,252,000		2,018,523,000
Convertible Preferred Stock
Stockholders' equity
Preferred stock	1,000		1,000
Common Stock Class A
Stockholders' equity
Common stock	324,000		292,000
Less: Class A common stock held in treasury, at cost, 10,593,191 and 9,810,802 shares as of June 30, 2017 and December 31, 2016, respectively.	(186,846,000)		(153,845,000)
Common Stock Class B
Stockholders' equity
Common stock	$ 0		$ 0

[1] As of December 31, 2016, maturities ranged from September 2019 to September 2023 and interest rates ranged from 4.38% to 9.25%.