0000001 - Document - Cover link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - Condensed Consolidated Balance Sheets (unaudited) link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - Condensed Consolidated Balance Sheets (unaudited) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - Condensed Consolidated Statement of Operations (unaudited) link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - Condensed Consolidated Statements of Comprehensive Income / (Loss) (unaudited) link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - Condensed Consolidated Statements of Comprehensive Income / (Loss) (unaudited) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952156 - Statement - Condensed Consolidated Statements of Changes in Stockholders' Equity (unaudited) link:presentationLink link:calculationLink link:definitionLink 9952157 - Statement - Condensed Consolidated Statements of Cash Flows (unaudited) link:presentationLink link:calculationLink link:definitionLink 9952158 - Disclosure - NATURE OF OPERATIONS link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - BUSINESS COMBINATIONS AND DISPOSITIONS link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - REVENUE RECOGNITION link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - RECEIVABLE FROM BROKER-DEALERS, FUTURE COMMISSION MERCHANTS AND CLEARING ORGANIZATIONS link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - INVESTMENTS link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - FIXED ASSETS AND INTERNALLY DEVELOPED SOFTWARE, NET link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - OTHER ASSETS, NET link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - ACCOUNTS PAYABLE AND OTHER LIABILITIES link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - DEBT OBLIGATIONS link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - GOODWILL, INTANGIBLE ASSETS, DERIVATIVES, AND DIGITAL ASSETS link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - EMPLOYEE BENEFIT PLAN link:presentationLink link:calculationLink link:definitionLink 9952170 - Disclosure - CLEARING HOUSE PERFORMANCE BONDS AND GUARANTEE FUNDS link:presentationLink link:calculationLink link:definitionLink 9952171 - Disclosure - FAIR VALUE MEASUREMENT link:presentationLink link:calculationLink link:definitionLink 9952172 - Disclosure - COMMITMENS AND CONTINGECIES link:presentationLink link:calculationLink link:definitionLink 9952173 - Disclosure - EQUITY link:presentationLink link:calculationLink link:definitionLink 9952174 - Disclosure - SHARE-BASED COMPENSATION link:presentationLink link:calculationLink link:definitionLink 9952175 - Disclosure - SEGMENT REPORTING link:presentationLink link:calculationLink link:definitionLink 9952176 - Disclosure - INCOME TAXES link:presentationLink link:calculationLink link:definitionLink 9952177 - Disclosure - RELATED PARTY TRANSACTIONS link:presentationLink link:calculationLink link:definitionLink 9952178 - Disclosure - EARNINGS PER SHARE link:presentationLink link:calculationLink link:definitionLink 9952179 - Disclosure - LEASES link:presentationLink link:calculationLink link:definitionLink 9952180 - Disclosure - SUBSEQUENT EVENTS link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - REVENUE RECOGNITION (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - RECEIVABLE FROM BROKER-DEALERS, FUTURE COMMISSION MERCHANTS AND CLEARING ORGANIZATIONS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - FIXED ASSETS AND INTERNALLY DEVELOPED SOFTWARE, NET (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - OTHER ASSETS, NET (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - ACCOUNTS PAYABLE AND OTHER LIABILITIES (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - DEBT OBLIGATIONS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - GOODWILL, INTANGIBLE ASSETS, DERIVATIVES, AND DIGITAL ASSETS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - CLEARING HOUSE PERFORMANCE BONDS AND GUARANTEE FUNDS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - FAIR VALUE MEASUREMENT (Tables) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - EQUITY (Tables) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - SHARE-BASED COMPENSATION (Tables) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - SEGMENT REPORTING (Tables) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - EARNINGS PER SHARE (Tables) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - LEASES (Tables) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - NATURE OF OPERATIONS (Details) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - BUSINESS COMBINATIONS AND DISPOSITIONS (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - REVENUE RECOGNITION = Disaggregation of Revenue (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - REVENUE RECOGNITION - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - RECEIVABLE FROM BROKER-DEALERS, FUTURE COMMISSION MERCHANTS AND CLEARING ORGANIZATIONS (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - INVESTMENTS (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - FIXED ASSETS AND INTERNALLY DEVELOPED SOFTWARE, NET - Schedule of Fixed Assets and Internally Developed Software, Net (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - FIXED ASSETS AND INTERNALLY DEVELOPED SOFTWARE, NET - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - OTHER ASSETS, NET - Schedule of the Components of Other Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - OTHER ASSETS, NET - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - OTHER ASSETS, NET - Schedule of Changes in Notes Receivable, Net of Allowance (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - OTHER ASSETS, NET - Change in Allowance for Notes Receivable (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - ACCOUNTS PAYABLE AND OTHER LIABILITIES (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - DEBT OBLIGATIONS - Schedule of Outstanding Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - DEBT OBLIGATIONS - Schedule of Outstanding Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - DEBT OBLIGATIONS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - DEBT OBLIGATIONS - Schedule of Maturities of Long-Term Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - DEBT OBLIGATIONS - Schedule of Interest Expense of Long-Term Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - GOODWILL, INTANGIBLE ASSETS, DERIVATIVES, AND DIGITAL ASSETS - Schedule of Goodwill (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - GOODWILL, INTANGIBLE ASSETS, DERIVATIVES, AND DIGITAL ASSETS - Schedule Of Carrying Value of Intangible Assets by Segment (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - GOODWILL, INTANGIBLE ASSETS, DERIVATIVES, AND DIGITAL ASSETS - Schedule of Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955547 - Disclosure - GOODWILL, INTANGIBLE ASSETS, DERIVATIVES, AND DIGITAL ASSETS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955548 - Disclosure - GOODWILL, INTANGIBLE ASSETS, DERIVATIVES, AND DIGITAL ASSETS - Schedule of Future Amortization Expense of Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955549 - Disclosure - EMPLOYEE BENEFIT PLAN (Details) link:presentationLink link:calculationLink link:definitionLink 9955550 - Disclosure - CLEARING HOUSE PERFORMANCE BONDS AND GUARANTEE FUNDS - Schedule of Performance Bonds and Guarantee Funds (Details) link:presentationLink link:calculationLink link:definitionLink 9955551 - Disclosure - CLEARING HOUSE PERFORMANCE BONDS AND GUARANTEE FUNDS (Details) link:presentationLink link:calculationLink link:definitionLink 9955552 - Disclosure - FAIR VALUE MEASUREMENT - Schedule of Fair Value for Assets and Liabilities Measured on Recurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 9955553 - Disclosure - FAIR VALUE MEASUREMENT - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955554 - Disclosure - FAIR VALUE MEASUREMENT - Schedule of Carrying Values and Estimated Fair Values of Debt Instruments (Details) link:presentationLink link:calculationLink link:definitionLink 9955555 - Disclosure - COMMITMENS AND CONTINGECIES (Details) link:presentationLink link:calculationLink link:definitionLink 9955556 - Disclosure - EQUITY - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955557 - Disclosure - EQUITY - Information About Warrant Activities (Details) link:presentationLink link:calculationLink link:definitionLink 9955558 - Disclosure - EQUITY - Additional Information Regarding Warrants Outstanding (Details) link:presentationLink link:calculationLink link:definitionLink 9955559 - Disclosure - SHARE-BASED COMPENSATION - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955560 - Disclosure - SHARE-BASED COMPENSATION - Schedule of Assumptions Used For Determining Fair Value Of Stock Options Granted (Details) link:presentationLink link:calculationLink link:definitionLink 9955561 - Disclosure - SHARE-BASED COMPENSATION - Schedule of Stock Option Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955562 - Disclosure - SHARE-BASED COMPENSATION - Schedule of Additional Information Regarding Stock Options Outstanding (Details) link:presentationLink link:calculationLink link:definitionLink 9955563 - Disclosure - SHARE-BASED COMPENSATION - Schedule of Unvested RSA and RSU Activities (Details) link:presentationLink link:calculationLink link:definitionLink 9955564 - Disclosure - SEGMENT REPORTING - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955565 - Disclosure - SEGMENT REPORTING - Schedule of Certain Financial Information for the Company's Reportable Operating Segments and Corporate and Other (Details) link:presentationLink link:calculationLink link:definitionLink 9955566 - Disclosure - INCOME TAXES (Details) link:presentationLink link:calculationLink link:definitionLink 9955567 - Disclosure - RELATED PARTY TRANSACTIONS (Details) link:presentationLink link:calculationLink link:definitionLink 9955568 - Disclosure - EARNINGS PER SHARE - Schedule of Earnings (Loss) Per Share, Basic and Diluted (Details) link:presentationLink link:calculationLink link:definitionLink 9955569 - Disclosure - EARNINGS PER SHARE - Schedule of Potentially Dilutive Shares Excluded from Calculation of Earnings Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 9955570 - Disclosure - LEASES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955571 - Disclosure - LEASES - Schedule of Lease Cost (Details) link:presentationLink link:calculationLink link:definitionLink 9955572 - Disclosure - LEASES Schedule of Supplemental Cash Flow Information Related to Operating Leases (Details) link:presentationLink link:calculationLink link:definitionLink 9955573 - Disclosure - LEASES - Schedule of Supplemental Balance Sheet Information Related to Operating Leases (Details) link:presentationLink link:calculationLink link:definitionLink 9955574 - Disclosure - LEASES - Schedule of Weighted-Average Remaining Lease Term and Weighted-Average Discount for Operating and Finance Leases (Details) link:presentationLink link:calculationLink link:definitionLink 9955575 - Disclosure - LEASES - Schedule of Undiscounted Cash Flow for Future Maturities of Lease Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955575 - Disclosure - LEASES - Schedule of Undiscounted Cash Flow for Future Maturities of Lease Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955576 - Disclosure - LEASES - Schedule of Maturity Analysis of Lease Receivables (Details) link:presentationLink link:calculationLink link:definitionLink