Consolidated Statements of Financial Condition (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
ASSETS
Cash and cash equivalents	$ 245,794	$ 519,734
Cash segregated under federal regulations	49,390	48,722
Investments, at fair value	171,067	170,677
Accounts receivable, net of allowance of $984 and $743 as of June 30, 2026 and December 31, 2025, respectively	133,786	100,989
Receivables from broker-dealers, clearing organizations and customers.	1,228,453	489,211
Goodwill	283,667	283,667
Intangible assets, net of accumulated amortization	100,245	110,629
Furniture, equipment, leasehold improvements and capitalized software, net of accumulated depreciation and amortization	111,362	112,431
Operating lease right-of-use assets	50,620	51,854
Prepaid expenses and other assets	47,829	46,972
Total assets	2,422,213	1,934,886
Liabilities
Accrued employee compensation	46,747	73,879
Payables to broker-dealers, clearing organizations and customers	863,546	325,959
Borrowings	115,914	220,000
Income and other tax liabilities	37,418	49,267
Accounts payable, accrued expenses and other liabilities	42,232	42,584
Operating lease liabilities	62,999	64,938
Total liabilities	1,168,856	776,627
Commitments and Contingencies (Note 13)
Redeemable noncontrolling interest	14,441	12,592
Stockholders' equity
Preferred stock	0	0
Common stock	123	123
Additional paid-in capital	374,229	305,923
Treasury stock - Common stock voting, at cost, 5,698,972 shares and 5,344,419 shares as of June 30, 2026 and December 31, 2025, respectively	(752,333)	(694,764)
Retained earnings	1,629,214	1,538,746
Accumulated other comprehensive income/(loss)	(12,317)	(4,361)
Total stockholders' equity	1,238,916	1,145,667
Total liabilities, redeemable noncontrolling interest and stockholders' equity	2,422,213	1,934,886
Series A Preferred Stock [Member]
Stockholders' equity
Preferred stock	$ 0	$ 0