Trading Arrangements, by Individual
Trading Arrangements, by Individual [Table]
Trading Arrangement:
Trading Arrangement [Axis]
Maximum
Maximum [Member]
Portion at Fair Value Measurement
Portion at Fair Value Measurement [Member]
Number of common shares received upon vesting (in shares)
Share-Based Compensation Arrangement By Share-Based Payment Award, Number Of Common Shares Received Upon Vesting
Share-Based Compensation Arrangement By Share-Based Payment Award, Number Of Common Shares Received Upon Vesting
Title of 12(b) Security
Title of 12(b) Security
Carrying Value
Reported Value Measurement [Member]
Adjustment to Compensation, Amount
Adjustment to Compensation Amount
Conversion of stock, shares issued (in shares)
Conversion of Stock, Shares Issued
Segment Reporting [Abstract]
Schedule of Future Amortization Expense of Intangible Assets
Intangible Asset, Finite-Lived, and Capitalized Cost, Software to be Sold, Leased, or Marketed, Estimated Amortization Expense [Table Text Block]
Settlement of interest payable in common stock
Stock Issued During Period, Value, Settlement Of Interest Payable
Stock Issued During Period, Value, Settlement Of Interest Payable
Accrued compensation payable
Employee-related Liabilities, Current
LEASES
Lessee, Finance Leases [Text Block]
CLEARING HOUSE PERFORMANCE BONDS AND GUARANTEE FUNDS
Clearing House Performance Bonds And Guarantee Funds [Text Block]
Clearing House Performance Bonds And Guarantee Funds
2027
Finance Lease, Liability, to be Paid, Year One
Number of securities called by warrants (in shares)
Class of Warrant or Right, Number of Securities Called by Warrants or Rights
Cash consideration received
Proceeds from Divestiture of Businesses
Schedule of Performance Bonds and Guarantee Funds
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block]
Debt instrument, convertible, conversion price (in dollars per share)
Debt Instrument, Convertible, Conversion Price
Loss on observable price change
Equity Securities without Readily Determinable Fair Value, Downward Price Adjustment, Annual Amount
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Access fees
Access Fees [Member]
Access Fees
Class of Warrant or Right [Table]
Class of Warrant or Right [Table]
Promissory Note
Promissory Note [Member]
Promissory Note
Change in fair value of puttable warrants issued with debt
Change in fair value of puttable warrants issued with debt
Fair Value Adjustment of Warrants
Other cost of revenues
Other Cost of Operating Revenue
Leases [Abstract]
RELATED PARTY TRANSACTIONS
Related Party Transactions Disclosure [Text Block]
Granted (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross
Unsecured Revolving Lines Of Credit - MIAX Futures, Instrument Two
Unsecured Revolving Lines Of Credit - MIAX Futures, Instrument Two [Member]
Unsecured Revolving Lines Of Credit - MIAX Futures, Instrument Two
Common stock, par value (in dollars per share)
Common Stock, Par or Stated Value Per Share
Other intangible assets, net
Beginning balance
Ending balance
Net Book Value
Intangible Asset, Excluding Goodwill, after Accumulated Amortization
Unvested shares outstanding (in shares)
Beginning balance (in shares)
Ending balance (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Settlement of interest payable in common stock (in shares)
Stock Issued During Period, Shares, Settlement Of Interest Payable
Stock Issued During Period, Shares, Settlement Of Interest Payable
Retirement Benefits [Abstract]
Investments
Long-Term Investments
Outstanding Aggregate Erroneous Compensation Amount
Outstanding Aggregate Erroneous Compensation Amount
Consulting Services
Consulting Services [Member]
Consulting Services
Operating
Lessee, Operating Lease, Description [Abstract]
Number of reportable segments
Number of Reportable Segments
Total current liabilities
Liabilities, Current
Crypto Asset [Domain]
Crypto Asset [Domain]
Customer relationships
Customer Relationships [Member]
Operating lease cost:
Lease, Cost [Abstract]
Entity Address, City or Town
Entity Address, City or Town
Granted (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period
Component of interest expense:
Interest Expense, Debt [Abstract]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Statement of Financial Position [Abstract]
Net Book Value
Net Book Value
Intangible Asset, Finite-Lived, after Accumulated Amortization
Peer Group Total Shareholder Return Amount
Peer Group Total Shareholder Return Amount
Return of capital from non-marketable equity securities
Proceeds from Equity Method Investment, Distribution, Return of Capital
ERP II Participant
ERP II Participant [Member]
ERP II Participant
Level 2
Fair Value, Inputs, Level 2 [Member]
Non-operating (expense) income:
Nonoperating Income (Expense) [Abstract]
Total Shareholder Return Vs Peer Group
Total Shareholder Return Vs Peer Group [Text Block]
Non-Rule 10b5-1 Arrangement Terminated
Non-Rule 10b5-1 Arrangement Terminated [Flag]
2029
Lessor, Operating Lease, Payment to be Received, Year Three
Clearing house performance bonds and guarantee funds
Increase (Decrease) In Deposit Assets, Excluding Participant Margin Deposits
Increase (Decrease) In Deposit Assets, Excluding Participant Margin Deposits
Concentration Risk Type [Axis]
Concentration Risk Type [Axis]
Schedule of Long-Term Debt Instruments [Table]
Schedule of Long-Term Debt Instruments [Table]
Margin deposits
Margin Deposit Assets
Nonvoting Common Stock
Nonvoting Common Stock [Member]
Schedule of Certain Financial Information for the Company's Reportable Operating Segments and Corporate and Other
Segment Reporting [Table Text Block]
Use of Estimates
Use of Estimates, Policy [Policy Text Block]
Related and Nonrelated Parties [Axis]
Related and Nonrelated Parties [Axis]
Other comprehensive income (loss)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent
Change in fair value of puttable common stock
Change in fair value of puttable common stock
Fair Value Adjustment Of Puttable Common Stock
Fair Value Adjustment Of Puttable Common Stock
Warrant modifications
Non-cash warrant modification
Warrant Modification, Noncash Expense
Warrant Modification, Noncash Expense
Proceeds from debt issuance, net of debt discount
Proceeds from Debt, Net of Issuance Costs
Schedule of Undiscounted Cash Flow for Future Maturities of Operating Lease Liabilities
Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]
Document Period End Date
Document Period End Date
Exercise Price Range 8
Exercise Price Range 8 [Member]
Exercise Price Range 8
Restricted Stock, Performance-Based Awards
Restricted Stock, Performance-Based Awards [Member]
Restricted Stock, Performance-Based Awards
Liabilities held for sale
Disposal Group, Including Discontinued Operation, Liabilities, Current
Preferred stock, shares outstanding (in shares)
Preferred Stock, Shares Outstanding
Debt instrument, face amount
Debt Instrument, Face Amount
2028
Lessee, Operating Lease, Liability, to be Paid, Year Two
Common stock in treasury, at cost, 353,799 shares at September 30, 2025 and 38,469 shares at December 31, 2024
Treasury Stock, Common, Value
Debt instrument, interest rate, effective percentage
Debt Instrument, Interest Rate, Effective Percentage
LEASES
Lessor, Operating Leases [Text Block]
Lessee, Lease, Description [Line Items]
Lessee, Lease, Description [Line Items]
Exercise Price Range 10
Exercise Price Range 10 [Member]
Exercise Price Range 10
Weighted average remaining lease term (years)
Finance Lease, Weighted Average Remaining Lease Term
Fair value of equity instruments other than options vested in period
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value
Accumulated other comprehensive loss, net
Accumulated Other Comprehensive Income (Loss), Net of Tax
Entity Shell Company
Entity Shell Company
Consolidation Items [Domain]
Consolidation Items [Domain]
Current portion of operating lease liability
Less: current lease liabilities
Operating Lease, Liability, Current
2029 Senior Secured Term Loan
2029 Senior Secured Term Loan [Member]
2029 Senior Secured Term Loan
EARNINGS PER SHARE
Earnings Per Share [Text Block]
Earnings Per Share [Abstract]
Document Fiscal Period Focus
Document Fiscal Period Focus
Peer Group Issuers, Footnote
Peer Group Issuers, Footnote [Text Block]
Total liabilities
Liabilities
Trading Symbol
Trading Symbol
Intangible Asset, Including Goodwill, after Accumulated Amortization [Abstract]
Intangible Asset, Including Goodwill, after Accumulated Amortization [Abstract]
Crypto asset, unrealized gain, nonoperating
Crypto Asset, Unrealized Gain (Loss), Nonoperating
Capital expenditures
Payments to Acquire Property, Plant, and Equipment
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss [Line Items]
Company Selected Measure Name
Company Selected Measure Name
Sale of Stock [Domain]
Sale of Stock [Domain]
Income Tax Disclosure [Abstract]
Intangible Asset, Indefinite-Lived [Table]
Intangible Asset, Indefinite-Lived [Table]
Assets acquired including goodwill
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets Acquired Including Goodwill
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets Acquired Including Goodwill
Commitment fee percentage
Line of Credit Facility, Commitment Fee Percentage
Credit Facility [Domain]
Credit Facility [Domain]
Schedule of Additional Information Regarding Stock Options Outstanding
Share-Based Payment Arrangement, Option, Exercise Price Range [Table Text Block]
Cash flows from operating activities:
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract]
Exercise Price Range 11
Exercise Price Range 11 [Member]
Exercise Price Range 11
Intangible Asset, Indefinite-Lived [Line Items]
Intangible Asset, Indefinite-Lived [Line Items]
Equity Valuation Assumption Difference, Footnote
Equity Valuation Assumption Difference, Footnote [Text Block]
2028
Finance Lease, Liability, to be Paid, Year Two
Disposal Group Name [Domain]
Disposal Group Name [Domain]
2030
Finance Lease, Liability, to be Paid, Year Four
Provision for deferred income taxes
Deferred Income Taxes and Tax Credits
Share-Based Payment Arrangement, Option, Exercise Price Range [Table]
Share-Based Payment Arrangement, Option, Exercise Price Range [Table]
US Treasury Bills
US Treasury Securities [Member]
Period following disposition for buyer to acquire retained equity interest
Disposal Group, Including Discontinued Operation, Period Following Disposition For Buyer To Acquire Retained Equity Interest
Disposal Group, Including Discontinued Operation, Period Following Disposition For Buyer To Acquire Retained Equity Interest
Goodwill, expected tax deductible amount
Business Combination, Goodwill, Expected Tax Deductible, Amount
Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]
Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]
RECEIVABLE FROM BROKER-DEALERS, FUTURE COMMISSION MERCHANTS AND CLEARING ORGANIZATIONS
Due to and from Broker-Dealers and Clearing Organizations Disclosure [Text Block]
Revenues less cost of revenues
Gross Profit
General, administrative, and other
Other General and Administrative Expense
Less: imputed interest
Finance Lease, Liability, Undiscounted Excess Amount
Other
Other Intangible Assets [Member]
Operating cash flows from operating leases
Operating Lease, Payments
Award Timing Predetermined
Award Timing Predetermined [Flag]
Total intrinsic value of options exercised
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value
Adjustment To PEO Compensation, Footnote
Adjustment To PEO Compensation, Footnote [Text Block]
Level 1
Fair Value, Inputs, Level 1 [Member]
Internally developed software
Software, Internally Developed [Member]
Receivables from broker-dealers, futures commission merchants, and clearing organizations
Receivable From Broker-Dealer And Clearing Organization, Current
Receivable From Broker-Dealer And Clearing Organization, Current
Derivative assets, net of current portion
Derivative Asset, Noncurrent
Effective tax rate
Effective Income Tax Rate Reconciliation, Percent
Grantee Status [Domain]
Grantee Status [Domain]
Unlocked at Various Times During 2026 Through 2028
Unlocked at Various Times During 2026 Through 2028 [Member]
Unlocked at Various Times During 2026 Through 2028
Thereafter
Finite-Lived Intangible Asset, Expected Amortization, After Year Four
Finite-Lived Intangible Asset, Expected Amortization, After Year Four
Common stock reacquired in exchange for pre-funded warrant
Stock Repurchased and Retired During Period, Value
Preferred stock, par value (in dollars per share)
Preferred Stock, Par or Stated Value Per Share
Long-term debt, fair value
Long-Term Debt, Fair Value
Depreciation
Depreciation
Plan Name [Domain]
Plan Name [Domain]
Antidilutive Securities [Axis]
Antidilutive Securities [Axis]
Beginning balance (in dollars per share)
Ending balance (in dollars per share)
Exercise Price (in dollars per share)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price
Right of use asset
Total right of use asset
Operating Lease, Right-of-Use Asset
Concentration Risk Type [Domain]
Concentration Risk Type [Domain]
Lessee, operating lease, renewal term
Lessee, Operating Lease, Renewal Term
Fair Value Disclosures [Abstract]
Deposit Assets [Line Items]
Deposit Assets [Line Items]
Deposit Assets [Line Items]
Brokerage, clearing, and exchange fees
Brokerage, Clearing, And Exchange Fees
Brokerage, Clearing, And Exchange Fees
Debt Instrument, Name [Domain]
Debt Instrument, Name [Domain]
INVESTMENTS
Investment in Debt and Equity Securities and Other Trading Assets [Text Block]
Long-term line of credit
Long-Term Line of Credit
Allowance for credit losses
Beginning balance
Ending balance
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Noncurrent
Expiration Date
Trading Arrangement Expiration Date
2010 And 2011
2010 And 2011 [Member]
2010 And 2011
Number of Warrants
Class Of Warrant Or Right, Outstanding [Abstract]
Class Of Warrant Or Right, Outstanding
Equities
Equities Segment [Member]
Equities Segment
Disposal Group, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operations [Line Items]
Exercised (in dollars per share)
Class Of Warrant Or Right, Exercised, Weighted Average Exercise Price Of Warrants Or Rights
Class Of Warrant Or Right, Exercised, Weighted Average Exercise Price Of Warrants Or Rights
Exercisable, number of options (in shares)
Stock Options Exercisable, Number of Exercisable Options (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number
Aggregate Pension Adjustments Service Cost
Aggregate Pension Adjustments Service Cost [Member]
Net income (loss) per share attributable to common stock
Net income (loss) per share attributable to common stock:
Earnings Per Share Reconciliation [Abstract]
Antidilutive Security, Excluded EPS Calculation [Table]
Antidilutive Security, Excluded EPS Calculation [Table]
Number of Financial Accountability Milestones completed on time
Number Of Financial Accountability Milestones Completed On Time
Number Of Financial Accountability Milestones Completed On Time
Preacquisition equity interest in acquiree, fair value
Business Combination, Achieved in Stages, Preacquisition Equity Interest in Acquiree, Fair Value
Cash flows from investing activities:
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract]
Related Party Transaction [Axis]
Related Party Transaction [Axis]
Issued to strategic investors under ERPs
Warrants Issued To Strategic Investors Under ERPs [Member]
Warrants Issued To Strategic Investors Under ERPs
2027
Lessor, Operating Lease, Payment to be Received, Year One
Disposal Groups, Including Discontinued Operations [Table]
Disposal Groups, Including Discontinued Operations [Table]
Option Indexed to Issuer's Equity, Type [Axis]
Option Indexed to Issuer's Equity, Type [Axis]
Segments [Domain]
Segments [Domain]
Noncurrent put liability reclassified to equity
Option Indexed To Issuer's Equity, Noncurrent Put Liability Reclassified To Equity
Option Indexed To Issuer's Equity, Noncurrent Put Liability Reclassified To Equity
Crypto asset, number of units
Crypto Asset, Number of Units
DEBT OBLIGATIONS
Debt Disclosure [Text Block]
Disposal Group Classification [Domain]
Disposal Group Classification [Domain]
Convertible Preferred Stock
Debt/accrued interest convertible into shares of common stock
Convertible Preferred Stock [Member]
Building and improvements
Building Improvements [Member]
Business Combination [Table]
Business Combination [Table]
BUSINESS COMBINATIONS AND DISPOSITIONS
Mergers, Acquisitions and Dispositions Disclosures [Text Block]
PEO Actually Paid Compensation Amount
PEO Actually Paid Compensation Amount
Secured Debt
Secured Debt [Member]
Weighted average discount rate
Finance Lease, Weighted Average Discount Rate, Percent
Interest Rate
Debt instrument, interest rate, stated percentage
Debt Instrument, Interest Rate, Stated Percentage
Total stockholders’ equity
Beginning balance
Ending balance
Equity, Attributable to Parent
Disposal Group, Disposed of by Sale, Not Discontinued Operations
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Assets
Assets [Abstract]
Total receivable from broker-dealers, futures commission merchants and clearing organizations
Receivable from Broker-Dealer and Clearing Organization
Transaction and clearing fees
Transaction And Clearing Fees [Member]
Transaction And Clearing Fees
Professional fees and outside services
Professional Fees
Insider Trading Policies and Procedures [Line Items]
Annual increase in number of shares authorized as percentage of outstanding stock, maximum
Share-Based Compensation Arrangement By Share-Based Payment Award, Annual Increase In Number of Shares Authorized, Percentage Of Outstanding Stock Maximum
Share-Based Compensation Arrangement By Share-Based Payment Award, Annual Increase In Number of Shares Authorized, Percentage Of Outstanding Stock Maximum
Income tax refunds
Proceeds from Income Tax Refunds
Promissory Note Warrants
Promissory Note Warrants [Member]
Promissory Note Warrants
TISEG
TISEG [Member]
TISEG
Security deposits
Security Deposit
Prepaid membership fees
Prepaid Expense, Noncurrent
Total potentially dilutive shares of common stock (in shares)
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Marketing fees payable
Accrued Marketing Costs, Current
Goodwill
Goodwill [Table Text Block]
Central Index Key
Entity Central Index Key
Less: Accumulated depreciation and amortization
Property, Plant, and Equipment, Accumulated Depreciation, Depletion, and Amortization
Equity [Abstract]
Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year
Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member]
Payments for legal settlements
Payments for Legal Settlements
Other
Deposit Assets, Other
Deposit Assets, Other
Remainder of 2026
Long-Term Debt, Maturity, Remainder of Fiscal Year
Fair Value Hierarchy and NAV [Axis]
Fair Value Hierarchy and NAV [Axis]
Investment, Name [Axis]
Investment, Name [Axis]
2003 Funding Order
2003 Funding Order [Member]
2003 Funding Order
Total non-current lease liabilities
Finance Lease, Liability, Noncurrent
Schedule of Assumptions Used For Determining Fair Value Of Stock Options Granted
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
Number of Options
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward]
Debt instrument, basis spread on variable rate
Debt Instrument, Basis Spread on Variable Rate
Total lease payments
Finance Lease, Liability, to be Paid
Restricted Stock
Unvested restricted stock awards
Restricted Stock [Member]
Accumulated other comprehensive income (loss), net
AOCI Attributable to Parent [Member]
All Individuals
All Individuals [Member]
Office Space
Office Space [Member]
Office Space
ERP V Warrants
ERP V Warrants [Member]
ERP V Warrants
Intangible Assets, Net (Excluding Goodwill) [Table]
Intangible Assets, Net (Excluding Goodwill) [Table]
Intangible Assets, Net (Excluding Goodwill) [Table]
Unrecognized compensation costs period for recognition
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition
Statement [Line Items]
Statement [Line Items]
Total assets
Assets
Operating Lease
Lessee, Operating Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract]
Business Combination [Abstract]
Crypto Asset, Restriction Terms [Axis]
Crypto Asset, Restriction Terms [Axis]
Crypto Asset, Restriction Terms
Common stock reserved for future issuance (in shares)
Common Stock, Capital Shares Reserved for Future Issuance
Convertible Debt
Convertible Debt [Member]
Operating Segments
Operating Segments [Member]
Weighted average grant date fair value of options granted (in dollars per share)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value
Interest expense and amortization of debt issuance costs
Interest expense and amortization of debt issuance costs
Interest Expense, Nonoperating
Equity securities without readily determinable fair value, amount
Equity Securities without Readily Determinable Fair Value, Amount
Liabilities assumed
Business Combination, Recognized Liability Assumed, Liability
SHARE-BASED COMPENSATION
Share-Based Payment Arrangement [Text Block]
Impairment of indefinite-lived intangible assets
Intangible Asset, Excluding Goodwill, Indefinite-Lived, Impairment Loss
Occupancy costs
Occupancy, Net
PEO
PEO [Member]
Market data fees
Market Data Fees [Member]
Market Data Fees
Other non-current liabilities
Other Liabilities, Noncurrent
Goodwill
Beginning balance
Ending balance
Goodwill
Forgone Recovery due to Violation of Home Country Law, Amount
Forgone Recovery due to Violation of Home Country Law, Amount
Purchase of warrants
Purchase Of Warrants [Member]
Purchase Of Warrants
Non-current operating lease liabilities
Total non-current lease liabilities
Operating Lease, Liability, Noncurrent
Accumulated Deficit
Retained Earnings [Member]
Total operating expenses
Operating Expenses
Revolving Credit Facility
Revolving Credit Facility [Member]
Secured Line Of Credit - MIAX Futures
Secured Line Of Credit [Member]
Secured Line Of Credit
Purchased software
Software, In-Development, Internally Developed, and Purchased [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock, shares, outstanding (in shares)
Common Stock, Shares, Outstanding
Award Timing Disclosures [Line Items]
Cancellation of repurchased common stock from employee stock incentive plans (in shares)
Cancellation Of Repurchased Common Stock, Shares
Cancellation Of Repurchased Common Stock, Shares
Diluted (in dollars per share)
Earnings Per Share, Diluted
Volatility (range), maximum
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum
Provision for notes receivable credit losses
Provision for uncollectible amount
Financing Receivable, Credit Loss, Expense (Reversal)
Number of shares surrendered for exercise price (in shares)
Class of Warrant or Right, Number of Shares Surrendered For Exercise Price
Class of Warrant or Right, Number of Shares Surrendered For Exercise Price
Liquidity payments payable
Liquidity Payments Payable, Current
Liquidity Payments Payable, Current
Accrued compensation payable
Increase (Decrease) in Employee Related Liabilities
Litigation Case [Domain]
Litigation Case [Domain]
Amortization
Intangible Asset, Finite-Lived, Amortization Expense
Exercise Price Range 19
Exercise Price Range 19 [Member]
Exercise Price Range 19
Pre-funded warrant
Pre-Funded Warrant [Member]
Pre-Funded Warrant
Intangible Asset, Finite-Lived [Line Items]
Intangible Asset, Finite-Lived [Line Items]
Broker-Dealer [Abstract]
IPO
IPO [Member]
Share-Based Payment Arrangement [Abstract]
Total revenues
Total revenue
Revenues
Revenue from Contract with Customer, Excluding Assessed Tax
Purchase of certificates of deposits
Payments To Acquire Certificates Of Deposits
Payments To Acquire Certificates Of Deposits
Exercise Price Range 7
Exercise Price Range 7 [Member]
Exercise Price Range 7
Assets held for sale
Disposal Group, Including Discontinued Operation, Assets, Current
Equity Awards Adjustments, Footnote
Equity Awards Adjustments, Footnote [Text Block]
Ownership percentage retained after disposal
Disposal Group, Including Discontinued Operation, Ownership Percentage Retained After Disposal
Disposal Group, Including Discontinued Operation, Ownership Percentage Retained After Disposal
Non-cash amounts related to capitalized internally developed software
Noncash Amounts Related To Capitalized Internally Developed Software
Noncash Amounts Related To Capitalized Internally Developed Software
Gross Carrying Amount
Intangible Asset, Excluding Goodwill, before Accumulated Amortization
Over-Allotment Option
Over-Allotment Option [Member]
Debt conversion, converted instrument, shares issued (in shares)
Debt Conversion, Converted Instrument, Shares Issued
Exercise Price Range [Axis]
Exercise Price Range [Axis]
Risk-free interest rate (range), minimum
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum
Settlement of interest payable in common stock
Noncash Settlement Of Interest Payable In Common Stock
Noncash Settlement Of Interest Payable In Common Stock
Schedule of Maturities of Long-Term Debt
Schedule of Maturities of Long-Term Debt [Table Text Block]
Put Option
Put Option [Member]
Sale of Stock [Axis]
Sale of Stock [Axis]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Additional Disclosures [Abstract]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Additional Disclosures [Abstract]
ACCOUNTS PAYABLE AND OTHER LIABILITIES
Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block]
Exercise Price Range 14
Exercise Price Range 14 [Member]
Exercise Price Range 14
Operating income (loss)
Operating Income (Loss)
Schedule of Undiscounted Cash Flow for Future Maturities of Finance Lease Liabilities
Finance Lease, Liability, to be Paid, Maturity [Table Text Block]
2026
Finance Lease, Liability, to be Paid, Remainder of Fiscal Year
Warrants and rights outstanding
Warrants and Rights Outstanding
Forfeited (in shares)
Class of Warrant or Right, Forfeited
Class of Warrant or Right, Forfeited
Amortization of intangible assets
Intangible Asset, Finite-Lived, Amortization Expense, Including Foreign Currency Translation Gain (Loss)
Intangible Asset, Finite-Lived, Amortization Expense, Including Foreign Currency Translation Gain (Loss)
Cash guarantee deposits
Receivables From Clearing Organizations, Cash Guarantee Deposits
Receivables From Clearing Organizations, Cash Guarantee Deposits
Related Party Transaction [Domain]
Related Party Transaction [Domain]
Rule 10b5-1 Arrangement Adopted
Rule 10b5-1 Arrangement Adopted [Flag]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Purchase obligation, to be paid, after year four
Purchase Obligation, To Be Paid, After Year Four
Purchase Obligation, To Be Paid, After Year Four
Change in Allowance for Notes Receivable
Financing Receivable, Allowance for Credit Loss [Table Text Block]
Common stock, shares, issued (in shares)
Beginning balance (in shares)
Ending balance (in shares)
Common Stock, Shares, Issued
Cash paid for amounts included in the measurement of lease liabilities:
Cash Flow, Operating Activities, Lessee [Abstract]
OTHER ASSETS, NET
Other Assets Disclosure [Text Block]
Secondary Offering
Secondary Offering [Member]
Secondary Offering
Purchase obligation, to be paid, year two
Purchase Obligation, to be Paid, Year Two
Exercise Price Range 12
Exercise Price Range 12 [Member]
Exercise Price Range 12
Supplemental disclosure of non-cash financing activities:
Noncash Financing Items [Abstract]
Noncash Financing Items
Accounts receivable
Increase (Decrease) in Accounts Receivable
Product and Service [Domain]
Product and Service [Domain]
Class of Stock [Line Items]
Class of Stock [Line Items]
Disaggregation of Revenue [Table]
Disaggregation of Revenue [Table]
Number of patents at issue
Loss Contingency, Number Of Patents At Issue
Loss Contingency, Number Of Patents At Issue
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Deferred income taxes
Deferred Income Tax Liabilities, Net
Compensation Actually Paid vs. Other Measure
Compensation Actually Paid vs. Other Measure [Text Block]
Defined contribution plan, cost
Defined Contribution Plan, Cost
Debt conversion, interest, converted instrument, shares issued (in shares)
Debt Conversion, Interest, Converted Instrument, Shares Issued
Debt Conversion, Interest, Converted Instrument, Shares Issued
2029
Lessee, Operating Lease, Liability, to be Paid, Year Three
Termination Date
Trading Arrangement Termination Date
Exercise Of Previously Issued Warrants
Exercise Of Previously Issued Warrants [Member]
Exercise Of Previously Issued Warrants
Subsequent Events [Abstract]
Fair Value, Recurring and Nonrecurring [Table]
Fair Value, Recurring and Nonrecurring [Table]
Compensation Actually Paid vs. Total Shareholder Return
Compensation Actually Paid vs. Total Shareholder Return [Text Block]
Expiration period
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period
Current portion of derivative assets
Derivative Asset, Current
Accrued expenses
Accrued Liabilities, Current
Fair Value as of Grant Date
Award Grant Date Fair Value
Goodwill [Table]
Goodwill [Table]
Cash and cash equivalent margin
Receivables From Clearing Organizations, Cash And Cash Equivalents Margin
Receivables From Clearing Organizations, Cash And Cash Equivalents Margin
Pay vs Performance Disclosure, Table
Pay vs Performance [Table Text Block]
Arrangement Duration
Trading Arrangement Duration
Issued with common stock
Warrants Issued With Common Stock [Member]
Warrants Issued With Common Stock
Consolidation Items [Axis]
Consolidation Items [Axis]
Entity Address, Postal Zip Code
Entity Address, Postal Zip Code
Registrant Name
Entity Registrant Name
Class of warrant or right, exercised (in shares)
Exercised (in shares)
Class of Warrant or Right, Exercised
Class of Warrant or Right, Exercised
Insider Trading Policies and Procedures Not Adopted
Insider Trading Policies and Procedures Not Adopted [Text Block]
Gross Carrying Amount
Intangible Asset, Finite-Lived, before Accumulated Amortization
Accounts payable and other liabilities
Increase (Decrease) in Accounts Payable and Accrued Liabilities
Forgone Recovery due to Expense of Enforcement, Amount
Forgone Recovery due to Expense of Enforcement, Amount
Deposit Assets [Table]
Deposit Assets [Table]
Deposit Assets [Table]
Award vesting period
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period
Goodwill [Roll Forward]
Goodwill [Roll Forward]
Furniture and equipment
Furniture and Fixtures [Member]
Intangible Asset, Finite-Lived, Class [Domain]
Intangible Asset, Finite-Lived, Class [Domain]
Exercisable, weighted average remaining contractual life (in years)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted-Average Remaining Contractual Term
Schedule of Fair Value for Assets and Liabilities Measured on Recurring Basis
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
All Award Types
Award Type [Domain]
2026
Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year
FAIR VALUE MEASUREMENT
Fair Value Disclosures [Text Block]
Level 3
Fair Value, Inputs, Level 3 [Member]
Weighted-average expected term (years)
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term
2027
Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year One
Repurchases of common stock from employee stock incentive plans (in shares)
Treasury Stock, Shares, Acquired
Share price (in dollars per share)
Share Price
Cancellation of repurchased common stock from employee stock incentive plans
Cancellation Of Repurchased Common Stock, Value
Cancellation Of Repurchased Common Stock, Value
Thereafter
Finance Lease, Liability, To Be Paid, Due After Year Four
Finance Lease, Liability, To Be Paid, Due After Year Four
Warrants expiration term, period following IPO
Warrants And Rights Outstanding, Term, Period Following Initial Public Offering
Warrants And Rights Outstanding, Term, Period Following Initial Public Offering
Total lease receivable
Lessor, Operating Lease, Payment to be Received
Unsecured Revolving Lines Of Credit - MIAX Futures
Unsecured Revolving Lines Of Credit - MIAX Futures [Member]
Unsecured Revolving Lines Of Credit - MIAX Futures
Three Customers
Three Customers [Member]
Three Customers
Restricted Stock, Time-Based Service Awards
Restricted Stock, Time-Based Service Awards [Member]
Restricted Stock, Time-Based Service Awards
Legal Entity [Axis]
Legal Entity [Axis]
Interest expense, debt
Interest expense
Interest Expense, Debt
Lessee, Lease, Description [Table]
Lessee, Lease, Description [Table]
Repurchases of common stock from employee stock incentive plans
Treasury Stock, Value, Acquired, Cost Method
Cash, cash equivalents, segregated cash and restricted cash at beginning of period
Cash, cash equivalents, segregated cash, and restricted cash at end of period
Total
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation
Adjusted net capital
Broker-Dealer, Net Capital
Intangible Asset, Finite-Lived [Table]
Intangible Asset, Finite-Lived [Table]
Exercise Price Range 9
Exercise Price Range 9 [Member]
Exercise Price Range 9
Non-NEOs
Non-NEOs [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Share-Based Payment Arrangement, Employee
Share-Based Payment Arrangement, Employee [Member]
Payments to acquire businesses, gross
Payments to Acquire Businesses, Gross
2028
Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Two
Investment, Name [Domain]
Investment, Name [Domain]
Customer [Domain]
Customer [Domain]
LEASES
Lessee, Operating Leases [Text Block]
Long-Term Debt, Type [Domain]
Long-Term Debt, Type [Domain]
Repurchases of common stock from employee stock incentive plans
Payments for Repurchase of Common Stock
Deferred transaction revenues
Contract with Customer, Liability, Current
Statistical Measurement [Axis]
Statistical Measurement [Axis]
Payables to customers
Increase (Decrease) in Payables to Customers
Total cost of revenues
Less: Cost of revenue
Cost of Revenue
Award Type
Award Type [Axis]
2026
Lessor, Operating Lease, Payment to be Received, Remainder of Fiscal Year
Number of patents dismissed
Loss Contingency, Number Of Patents Dismissed
Loss Contingency, Number Of Patents Dismissed
Named Executive Officers, Footnote
Named Executive Officers, Footnote [Text Block]
Accumulated deficit
Retained Earnings (Accumulated Deficit)
Product and Service [Axis]
Product and Service [Axis]
Exercise Price Range 16
Exercise Price Range 16 [Member]
Exercise Price Range 16
Consulting Agreement Warrants
Consulting Agreement Warrants [Member]
Consulting Agreement Warrants
Awards Close in Time to MNPI Disclosures
Awards Close in Time to MNPI Disclosures [Table]
Common Stock - Voting and Nonvoting
Common Stock [Member]
Less: Tenant improvement allowance receivable
Operating Lease, Liability, Tenant Improvement Allowance
Operating Lease, Liability, Tenant Improvement Allowance
Total operating lease cost
Operating Lease, Cost
Litigation settlement
Litigation settlement expense
Litigation Settlement, Fee Expense
Dividend yield
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate
Contractual interest
Interest Expense, Debt, Excluding Amortization
Warrant modification
Adjustments To Additional Paid In Capital, Warrant Modification
Adjustments To Additional Paid In Capital, Warrant Modification
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark [Axis]
Crypto Asset, Restriction Terms [Domain]
Crypto Asset, Restriction Terms [Domain]
Crypto Asset, Restriction Terms [Domain]
Foreign currency translation
Goodwill, Foreign Currency Translation, Gain (Loss)
Total liabilities and stockholders’ equity
Liabilities and Equity
Variable lease cost
Variable Lease, Cost
Payables to clearing organizations
Increase (Decrease) in Payable to Broker-Dealer and Clearing Organization
Stock Options
Outstanding stock options
Share-Based Payment Arrangement, Option [Member]
Segments [Axis]
Segments [Axis]
Additional 402(v) Disclosure
Additional 402(v) Disclosure [Text Block]
Asset Class [Axis]
Asset Class [Axis]
Related and Nonrelated Parties [Domain]
Related and Nonrelated Parties [Domain]
Tabular List, Table
Tabular List [Table Text Block]
Additional paid-in capital
Additional Paid in Capital
2029
Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Three
Remainder of 2026
Intangible Asset, Finite-Lived, Estimated Amortization Expense, Remainder of Fiscal Year
Name
Awards Close in Time to MNPI Disclosures, Individual Name
Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested
Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member]
Outstanding, aggregate intrinsic value
Stock Options Outstanding, Aggregate Intrinsic Value
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value
Long-Lived Asset, Class [Domain]
Long-Lived Asset, Class [Domain]
Sale of stock, price per share (in dollars per share)
Sale of Stock, Price Per Share
Crypto Asset [Axis]
Crypto Asset [Axis]
Property, Plant, and Equipment [Table]
Property, Plant, and Equipment [Table]
Adjustment to Compensation:
Adjustment to Compensation [Axis]
Exercise Price Range 5
Exercise Price Range 5 [Member]
Exercise Price Range 5
Receivables from broker-dealers, futures commission merchants, and clearing organizations
Increase (Decrease) in Receivable from Broker-Dealer and Clearing Organization
Voting Common Stock
Voting Common Stock [Member]
Voting Common Stock
Exercise Price Range 15
Exercise Price Range 15 [Member]
Exercise Price Range 15
Receivable from clearing organizations
Receivable From Clearing Organization [Abstract]
Receivable From Clearing Organization
Rule 10b5-1 Arrangement Terminated
Rule 10b5-1 Arrangement Terminated [Flag]
Aggregate Erroneous Compensation Amount
Aggregate Erroneous Compensation Amount
Cash paid for interest
Interest Paid, Excluding Capitalized Interest, Operating Activity
Credit Facility [Axis]
Credit Facility [Axis]
Total assets
Assets, Fair Value Disclosure
Pyth Tokens
Pyth Tokens [Member]
Pyth Tokens
Weighted Average Exercise Price
Class Of Warrant Or Right, Outstanding, Weighted Average Exercise Price Of Warrants Or Rights [Abstract]
Class Of Warrant Or Right, Outstanding, Weighted Average Exercise Price Of Warrants Or Rights
Name
Measure Name
Pay vs Performance Disclosure [Line Items]
Fair Value Hierarchy and NAV [Domain]
Fair Value Hierarchy and NAV [Domain]
Debt Instrument [Line Items]
Debt Instrument [Line Items]
Other current assets
Increase (Decrease) in Other Current Assets
Additional Paid-in Capital
Additional Paid-in Capital [Member]
Intangible Asset, Indefinite-Lived, Class [Axis]
Intangible Asset, Indefinite-Lived, Class [Axis]
Goodwill, impairment loss
Goodwill, Impairment Loss
Name
Trading Arrangement, Individual Name
Unrecognized compensation costs, excluding options
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount
Cash and cash equivalents
Cash and Cash Equivalent
Exercise Price Range 2
Exercise Price Range 2 [Member]
Exercise Price Range 2
Operating lease, expense
Operating Lease, Expense
Company Selected Measure Amount
Company Selected Measure Amount
Unrealized loss (gain) on equity securities owned
Equity Securities, FV-NI, Unrealized Gain (Loss)
Depreciation and amortization
Depreciation, Depletion and Amortization
Foreign Currency Translation
Intangible Asset, Indefinite-Lived, Foreign Currency Translation, Gain (Loss)
Exercise Price Range 17
Exercise Price Range 17 [Member]
Exercise Price Range 17
Share-based compensation, net of cancellations and forfeitures (in shares)
Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture
Assets acquired under capital leases
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability
Clearing house performance bonds and guarantee funds
Deposit Liability, Excluding Participant Margin Deposits, Current
Deposit Liability, Excluding Participant Margin Deposits, Current
Weighted average remaining lease term (years)
Operating Lease, Weighted Average Remaining Lease Term
Non-PEO NEO
Non-PEO NEO [Member]
Exercise Price Range 3
Exercise Price Range 3 [Member]
Exercise Price Range 3
Customer Concentration Risk
Customer Concentration Risk [Member]
Purchase obligation
Purchase Obligation
Award Timing Method
Award Timing Method [Text Block]
Increase in cash, cash equivalents, segregated cash, and restricted cash
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation
Other revenue
Product and Service, Other [Member]
Forgone Recovery, Explanation of Impracticability
Forgone Recovery, Explanation of Impracticability [Text Block]
Volatility (range), minimum
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum
2028
Lessor, Operating Lease, Payment to be Received, Year Two
Expired (in dollars per share)
Class Of Warrant Or Right, Expired, Weighted Average Exercise Price Of Warrants Or Rights
Class Of Warrant Or Right, Expired, Weighted Average Exercise Price Of Warrants Or Rights
Net income (loss) attributable to Miami International Holdings, Inc.
Net income (loss)
Net income (loss)
Net Income (Loss) Attributable to Parent
Long-Term Debt, Type [Axis]
Long-Term Debt, Type [Axis]
Erroneous Compensation Analysis
Erroneous Compensation Analysis [Text Block]
Deferred transaction revenue recognized, including opening balance
Contract With Customer, Liability, Revenue Recognized, Including Opening Balance
Contract With Customer, Liability, Revenue Recognized, Including Opening Balance
Restatement Determination Date:
Restatement Determination Date [Axis]
Share-Based Payment Arrangement, Nonemployee
Share-Based Payment Arrangement, Nonemployee [Member]
Exercise Price Range 18
Exercise Price Range 18 [Member]
Exercise Price Range 18
Exercise Price Range 4
Exercise Price Range 4 [Member]
Exercise Price Range 4
Deferred IPO cost recognized as additional paid-in capital
Deferred IPO Cost Recognized As Additional Paid In Capital
Deferred IPO Cost Recognized As Additional Paid In Capital
Exercisable, weighted average exercise price (in dollars per share)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price
Unsecured Revolving Line Of Credit - Dorman Trading
Unsecured Revolving Line Of Credit - Dorman Trading [Member]
Unsecured Revolving Line Of Credit - Dorman Trading
Customer One
Customer One [Member]
Customer One
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]
Liquidity payments
Liquidity Payment Expense
Liquidity Payment Expense
Beginning balance (in dollars per share)
Ending balance (in dollars per share)
Class Of Warrant Or Right, Outstanding, Weighted Average Exercise Price Of Warrants Or Rights
Class Of Warrant Or Right, Outstanding, Weighted Average Exercise Price Of Warrants Or Rights
Pension Benefits Adjustments, Footnote
Pension Benefits Adjustments, Footnote [Text Block]
Foreign Currency Translation
Intangible Assets, Foreign Currency Translation Gain (Loss)
Intangible Assets, Foreign Currency Translation Gain (Loss)
Schedule of the Components of Other Assets
Schedule of Other Assets, Noncurrent [Table Text Block]
Net capital requirement
Broker-Dealer, Minimum Net Capital Required, Broker-Dealer Subsidiary, Aggregate Indebtedness Standard
Statistical Measurement [Domain]
Statistical Measurement [Domain]
Employee & Director stock transactions
Stock Issued During Period, Value, Issued for Services
Capital stock, voting percentage, maximum
Capital Stock, Voting Percentage, Maximum
Capital Stock, Voting Percentage, Maximum
Document Fiscal Year Focus
Document Fiscal Year Focus
Acquisition-related costs
Business Combination, Acquisition-Related Cost, Expense
Number of Shares
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Customer [Axis]
Customer [Axis]
Supplemental disclosure of non-cash investing activities:
Noncash Investing Items [Abstract]
Noncash Investing Items
Cashless Exercise Of Options
Cashless Exercise Of Options [Member]
Cashless Exercise Of Options
International
International Segment [Member]
International Segment
Common stock - voting and nonvoting, par value $0.001 (600,000,000 authorized (400,000,000 voting, 200,000,000 nonvoting); XX issued and outstanding common stock at June 30, 2026 (XX voting, 0 nonvoting), 85,890,086 issued and 85,536,287 outstanding common stock at December 31, 2025 (85,536,287 voting, 0 nonvoting)
Common Stock, Value, Issued
2027
Lessee, Operating Lease, Liability, to be Paid, Year One
Exercise Price Range 1
Exercise Price Range 1 [Member]
Exercise Price Range 1
Schedule of Outstanding Debt
Schedule of Long-Term Debt Instruments [Table Text Block]
Other
Other Assets, Miscellaneous, Noncurrent
Services transferred over time
Transferred over Time [Member]
Line of Credit
Line of Credit [Member]
Restatement Determination Date
Restatement Determination Date
Class of Warrant or Right [Domain]
Class of Warrant or Right [Domain]
Amendment Flag
Amendment Flag
Goodwill [Line Items]
Goodwill [Line Items]
Current liabilities:
Liabilities, Current [Abstract]
Exercise Price Range 13
Exercise Price Range 13 [Member]
Exercise Price Range 13
Provision for accounts receivable credit losses
Accounts Receivable, Credit Loss Expense (Reversal)
Repayment of capital lease obligations
Finance Lease, Principal Payments
Disposal Group Classification [Axis]
Disposal Group Classification [Axis]
Capital stock, ownership threshold, individual, percentage
Capital Stock, Ownership Threshold, Individual, Percentage
Capital Stock, Ownership Threshold, Individual, Percentage
Exercise Price Range 21
Exercise Price Range 21 [Member]
Exercise Price Range 21
Period following disposition to sell retained equity interest
Disposal Group, Including Discontinued Operation, Period Following Disposition To Sell Retained Equity Interest
Disposal Group, Including Discontinued Operation, Period Following Disposition To Sell Retained Equity Interest
Loss Contingencies [Table]
Loss Contingencies [Table]
Total fair value of equity instruments other than options
Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Outstanding, Fair Value
Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Outstanding, Fair Value
Timing of Transfer of Good or Service [Domain]
Timing of Transfer of Good or Service [Domain]
Adjustment to Non-PEO NEO Compensation Footnote
Adjustment to Non-PEO NEO Compensation Footnote [Text Block]
Nasdaq Litigation
Nasdaq Litigation [Member]
Nasdaq Litigation
Property, Plant, and Equipment [Abstract]
Entity Address, State or Province
Entity Address, State or Province
Foreign currency translation adjustments, net of tax expense of $18 and tax benefit of $167 for the three and six months ended June 30, 2026, respectively and tax expense of $132 for both three and six months ended June 30, 2025
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent
PEO Total Compensation Amount
PEO Total Compensation Amount
Assets:
Assets, Fair Value Disclosure [Abstract]
Forfeited (in dollars per share)
Class Of Warrant Or Right, Forfeited, Weighted Average Exercise Price Of Warrants Or Rights
Class Of Warrant Or Right, Forfeited, Weighted Average Exercise Price Of Warrants Or Rights
Basic (in shares)
Weighted Average Number of Shares Outstanding, Basic
Exercise Price Range 6
Exercise Price Range 6 [Member]
Exercise Price Range 6
Loss Contingencies [Line Items]
Loss Contingencies [Line Items]
2030
Lessee, Operating Lease, Liability, to be Paid, Year Four
Finance
Lessee, Finance Lease, Description [Abstract]
Gross Carrying Amount
Indefinite-Lived Intangible Assets (Excluding Goodwill), Gross
Indefinite-Lived Intangible Assets (Excluding Goodwill), Gross
Award Timing MNPI Disclosure
Award Timing MNPI Disclosure [Text Block]
Equity instruments other than options, vested in period (in shares)
Vested (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period
Basis of Presentation
Basis of Accounting, Policy [Policy Text Block]
Class of Stock [Axis]
Class of Stock [Axis]
Net income (loss) attributable to common stock
Net Income (Loss) Available to Common Stockholders, Basic
Revenue from Contract with Customer Benchmark
Revenue from Contract with Customer Benchmark [Member]
Proceeds from issuance of common stock and convertible preferred stock
Proceeds From Issuance Of Common Stock And Convertible Preferred Stock
Proceeds From Issuance Of Common Stock And Convertible Preferred Stock
Accumulated Amortization
Intangible Asset, Finite-Lived, Accumulated Amortization
2029 Senior Secured Term Loan Warrants - Group 1
2029 Senior Secured Term Loan Warrants - Group 1 [Member]
2029 Senior Secured Term Loan Warrants - Group 1
Line of credit facility, maximum borrowing capacity
Line of Credit Facility, Maximum Borrowing Capacity
Current portion of long-term debt
Current portion of long-term debt
Long-Term Debt, Current Maturities
Conversion of puttable warrants into non-puttable warrants
Conversion Of Warrants, Amount Converted
Conversion Of Warrants, Amount Converted
Expired (in shares)
Class of Warrant or Right, Expired
Class of Warrant or Right, Expired
Recent Accounting Pronouncements
New Accounting Pronouncements, Policy [Policy Text Block]
Litigation Case [Axis]
Litigation Case [Axis]
Land
Land [Member]
Total non-cash investing activities
Noncash Investing Activities
Noncash Investing Activities
Deferred transaction revenue
Increase (Decrease) in Contract with Customer, Liability
Grantee Status [Axis]
Grantee Status [Axis]
Intangible assets acquired
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill
Exercise price of warrants (in dollars per share)
Weighted Average Exercise Price (in dollars per share)
Class of Warrant or Right, Exercise Price of Warrants or Rights
Total debt, including current obligations
Long-term debt
Long-Term Debt
Purchase obligation, to be paid, year three
Purchase Obligation, to be Paid, Year Three
FIXED ASSETS AND INTERNALLY DEVELOPED SOFTWARE, NET
Property, Plant, and Equipment [Text Block]
Total leased liabilities
Operating Lease, Liability, Net Of Tenant Improvement Allowance
Operating Lease, Liability, Net Of Tenant Improvement Allowance
Changes in operating assets and liabilities:
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract]
Cancelled, expired or forfeited (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Expirations in Period
Net cash provided by (used in) investing activities
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation
Equity Awards Adjustments, Excluding Value Reported in Compensation Table
Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member]
Compensation and benefits
Compensation Expense, Excluding Cost of Good and Service Sold
EQUITY
Equity [Text Block]
Security Exchange Name
Security Exchange Name
Payables to clearing organizations
Broker-Dealer, Payable To Other Broker-Dealer And Clearing Organization, Current
Broker-Dealer, Payable To Other Broker-Dealer And Clearing Organization, Current
Granted (in dollars per share)
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price
Intangible Assets, Net (Excluding Goodwill) [Roll Forward]
Intangible Assets, Net (Excluding Goodwill) [Roll Forward]
Intangible Assets, Net (Excluding Goodwill)
Current put liability reclassified to equity
Option Indexed To Issuer's Equity, Current Put Liability Reclassified To Equity
Option Indexed To Issuer's Equity, Current Put Liability Reclassified To Equity
Number of petitions filed
Loss Contingency, Number Of Petitions Filed
Loss Contingency, Number Of Petitions Filed
Number of shares authorized (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized
Employee & Director stock transactions (in shares)
Stock Issued During Period, Shares, Issued for Services
Accrued interest payable
Interest Payable, Current
Segment Information
Segment Reporting, Policy [Policy Text Block]
Schedule of Fixed Assets and Internally Developed Software, Net
Property, Plant, and Equipment [Table Text Block]
Statement of Comprehensive Income [Abstract]
Name
Outstanding Recovery, Individual Name
Award Timing, How MNPI Considered
Award Timing, How MNPI Considered [Text Block]
Purchase obligation, to be paid, year one
Purchase Obligation, to be Paid, Year One
Equity securities without readily determinable fair value, impairment loss
Equity Securities without Readily Determinable Fair Value, Impairment Loss, Annual Amount
Net Book Value
Intangible Asset, Excluding Goodwill, Indefinite-Lived
Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year
Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member]
Pension Adjustments Prior Service Cost
Pension Adjustments Prior Service Cost [Member]
Unrecognized compensation costs related to stock options
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount
Employer matching contribution, percent of employees' gross pay
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay
Cash and securities segregated under federal and other regulations
Cash segregated under federal and other regulations
Cash And Securities Segregated Under Federal And Other Regulations, Current
Cash And Securities Segregated Under Federal And Other Regulations, Current
Amortization of debt discount and issue cost
Amortization of debt discount and issuance cost
Amortization of Debt Issuance Costs and Discounts
Award Date [Axis]
Award Date [Axis]
Unrealized gain (loss) on derivative assets
Unrealized Gain (Loss) on Derivatives
Proceeds from sale of business, net of cash and cash equivalents sold
Proceeds from Divestiture of Businesses, Net of Cash Divested
Total
Outstanding debt
Long-Term Debt, Gross
Rothera
Rothera [Member]
Rothera
Thereafter
Lessee, Operating Lease, Liability, To Be Paid, Due After Year Four
Lessee, Operating Lease, Liability, To Be Paid, Due After Year Four
Crypto asset, number of units, unrestricted
Crypto Asset, Number of Units, Unrestricted
Asset Class [Domain]
Asset Class [Domain]
Assets
Receivable from Broker-Dealer and Clearing Organization [Abstract]
Related Party Transactions [Abstract]
Loss on sale of intangible asset
Loss on sale of intangible asset
Gain (Loss) on Disposition of Intangible Assets
Compensation Amount
Outstanding Recovery Compensation Amount
Individual:
Individual [Axis]
Warrant
Warrants to purchase shares of common stock
Warrant [Member]
Diluted (in shares)
Weighted Average Number of Shares Outstanding, Diluted
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue [Line Items]
Entity Emerging Growth Company
Entity Emerging Growth Company
Related Party Transaction [Line Items]
Related Party Transaction [Line Items]
Underlying Security Market Price Change
Underlying Security Market Price Change, Percent
Less: imputed interest
Lessee, Operating Lease, Liability, Undiscounted Excess Amount
Award Date [Domain]
Award Date [Domain]
Crypto asset, restriction period
Crypto Asset, Contractual Sale Restriction, Remaining Period
Crypto asset, number of units, restricted
Crypto Asset, Number of Units, Restricted
Other assets
Increase (Decrease) in Other Noncurrent Assets
Revenues:
Revenue from Contract with Customer [Abstract]
Marketing and business development
Business Development And Marketing Expense
Business Development And Marketing Expense
Impairment of long-lived assets
Long-Lived Asset, Held and Used, Impairment Loss
Unrealized gain (loss) on derivative and digital assets
Unrealized loss (gain) on derivative and digital assets
Unrealized Gain (Loss) on Derivatives And Digital Assets
Unrealized Gain (Loss) on Derivatives And Digital Assets
Crypto asset, realized loss, nonoperating
Crypto Asset, Realized Loss, Nonoperating
Cost of revenues:
Cost of Revenue [Abstract]
Restricted cash
Restricted Cash, Current
Treasury Stock
Treasury Stock, Common [Member]
Intangible Asset, Goodwill and Other [Abstract]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Intangible Asset, Indefinite-Lived, Class [Domain]
Intangible Asset, Indefinite-Lived, Class [Domain]
Total lease payments
Lessee, Operating Lease, Liability, to be Paid
Convertible Loan
Convertible Loan [Member]
Convertible Loan
Weighted average grant date fair value (in dollars per share)
Beginning balance (in dollars per share)
Ending balance (in dollars per share)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value
One ERP Participant
One ERP Participant [Member]
One ERP Participant
All Executive Categories
All Executive Categories [Member]
Employer matching contribution, percent of match
Defined Contribution Plan, Employer Matching Contribution, Percent of Match
Pension Adjustments Service Cost
Pension Adjustments Service Cost [Member]
Other comprehensive income (loss):
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract]
Class of Warrant or Right [Line Items]
Class of Warrant or Right [Line Items]
Total non-cash financing activities
Noncash Financing Activities
Noncash Financing Activities
Exercise Price Range [Domain]
Exercise Price Range [Domain]
Ownership interest prior to divestiture
Disposal Group, Including Discontinued Operation, Ownership Percentage in Disposed Asset
Disposal Group, Including Discontinued Operation, Ownership Percentage in Disposed Asset
Number of patents infringed on
Loss Contingency, Number Of Patents Infringed On
Loss Contingency, Number Of Patents Infringed On
Schedule of Earnings (Loss) Per Share, Basic and Diluted
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Risk-free interest rate (range), maximum
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum
Intangible Assets, Net (Excluding Goodwill) [Line Items]
Intangible Assets, Net (Excluding Goodwill) [Line Items]
Intangible Assets, Net (Excluding Goodwill) [Line Items]
Debt Disclosure [Abstract]
Granted (in dollars per share)
Class Of Warrant Or Right, Granted, Weighted Average Exercise Price Of Warrants Or Rights
Class Of Warrant Or Right, Granted, Weighted Average Exercise Price Of Warrants Or Rights
SEGMENT REPORTING
Segment Reporting [Text Block]
Minimum
Minimum [Member]
Disaggregation of Revenue
Disaggregation of Revenue [Table Text Block]
Foreign currency translation
Intangible Assets (Excluding Goodwill), Foreign Currency Translation Gain (Loss)
Intangible Assets (Excluding Goodwill), Foreign Currency Translation Gain (Loss)
Class of Warrant or Right [Axis]
Class of Warrant or Right [Axis]
Weighted-average shares of common stock outstanding
Weighted-average common shares outstanding:
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Non-Rule 10b5-1 Arrangement Adopted
Non-Rule 10b5-1 Arrangement Adopted [Flag]
Conversion of stock, conversion ratio
Conversion Of Stock, Conversion Ratio
Conversion Of Stock, Conversion Ratio
Outstanding, weighted average remaining contractual life (in years)
Stock Options Outstanding, Weighted Average Remaining Contractual Life (in Years)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted-Average Remaining Contractual Term
Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table
Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member]
Timing of Transfer of Good or Service [Axis]
Timing of Transfer of Good or Service [Axis]
Preacquisition equity interest in acquiree, percentage
Business Combination, Achieved in Stages, Preacquisition Equity Interest in Acquiree, Percentage
Fixed lease cost
Fixed Lease, Cost
Fixed Lease, Cost
Business Combination [Line Items]
Business Combination [Line Items]
Financing Receivable, Allowance for Credit Loss [Table]
Financing Receivable, Allowance for Credit Loss [Table]
Common stock, shares authorized (in shares)
Common Stock, Shares Authorized
Intangible Asset, Finite-Lived, Useful Life
Intangible Asset, Finite-Lived, Useful Life
Sale of stock, number of shares issued in transaction (in shares)
Sale of Stock, Number of Shares Issued in Transaction
Historical cost recoupment period
Gain Contingency, Historical Cost Recoupment Period
Gain Contingency, Historical Cost Recoupment Period
Schedule of Carrying Values and Fair Values of the Company's Debt Obligations
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block]
Exercise Price
Award Exercise Price
Segment Reporting [Line Items]
Segment Reporting [Line Items]
Document Quarterly Report
Document Quarterly Report
Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested
Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member]
Effect of exchange rate changes on cash and cash equivalents
Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation
Repayments
Proceeds from Collection of Finance Receivables
Interest payable
Interest Payable
Repayments of debt
Repayments of long-term debt
Repayments of Long-Term Debt
Unamortized debt discount and issue cost
Less: Unamortized debt discount and debt issuance costs
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net
Issuance of common stock - warrant exercises
Stock Issued During Period, Value, Warrants Exercised
Stock Issued During Period, Value, Warrants Exercised
Awards Close in Time to MNPI Disclosures, Table
Awards Close in Time to MNPI Disclosures [Table Text Block]
Equity Component [Domain]
Equity Component [Domain]
Sale of stock, consideration received on transaction
Sale of Stock, Consideration Received on Transaction
Adoption Date
Trading Arrangement Adoption Date
Counterparty Name [Domain]
Counterparty Name [Domain]
Total payable to clearing organizations
Broker-Dealer, Payable to Other Broker-Dealer and Clearing Organization
Capital stock, ownership threshold, exchange member, percentage
Capital Stock, Ownership Threshold, Exchange Member, Percentage
Capital Stock, Ownership Threshold, Exchange Member, Percentage
Equity securities owned
Equity Securities, FV-NI, Current
Title
Trading Arrangement, Individual Title
Forgone Recovery due to Disqualification of Tax Benefits, Amount
Forgone Recovery due to Disqualification of Tax Benefits, Amount
Accounting Policies [Abstract]
Restatement does not require Recovery
Restatement Does Not Require Recovery [Text Block]
Total leased liabilities
Operating Lease, Liability
Payment of IPO costs
Payments of offering costs
Payments of Stock Issuance Costs
Participant margin deposits
Increase (Decrease) In Participant Margin Deposit Assets
Increase (Decrease) In Participant Margin Deposit Assets
Total lease liabilities
Finance Lease, Liability
Beginning balance (in shares)
Ending balance (in shares)
Stock Options Outstanding, Number of Options Outstanding (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number
Counterclaim discovery stay period
Loss Contingency, Counterclaim Discovery Stay Period
Loss Contingency, Counterclaim Discovery Stay Period
Insider Trading Policies and Procedures Adopted
Insider Trading Policies and Procedures Adopted [Flag]
Schedule of Interest Expense of Long-Term Debt
Schedule Of Interest Expense Of Long-Term Debt [Table Text Block]
Schedule Of Interest Expense Of Long-Term Debt
Business Combination [Domain]
Business Combination [Domain]
Puttable common stock, shares, outstanding (in shares)
Puttable Common Stock, Shares, Outstanding
Puttable Common Stock, Shares, Outstanding
Cancelled, expired or forfeited (in dollars per share)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price
COMMITMENS AND CONTINGECIES
Commitments and Contingencies Disclosure [Text Block]
Compensation Actually Paid vs. Net Income
Compensation Actually Paid vs. Net Income [Text Block]
Restricted stock units
Restricted Stock Units (RSUs) [Member]
Number of votes per common share
Common Stock, Number Of Votes Per Common Share
Common Stock, Number Of Votes Per Common Share
Schedule of Potentially Dilutive Shares Excluded from Calculation of Earnings Per Share
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
Section 31 fees payable
Accrued Regulatory Fees, Current
Accrued Regulatory Fees, Current
All Adjustments to Compensation
All Adjustments to Compensation [Member]
Corporate & Other
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
Judson Gray Teekell [Member]
Judson Gray Teekell
Business Combination [Axis]
Business Combination [Axis]
Net cash provided by operating activities
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation
Customer Three
Customer Three [Member]
Customer Three
Schedule of Receivable From and Payable to Broker-Dealers, Future Commission Merchants, and Clearing Organizations
Schedule of Due to (from) Broker-Dealer and Clearing Organization [Table Text Block]
Income Statement [Abstract]
Document Transition Report
Document Transition Report
Issued with debt
Warrants Issued With Debt [Member]
Warrants Issued With Debt
Operating expenses:
Operating Expenses [Abstract]
Deferred tax asset, net
Deferred Income Tax Assets, Net
Stock Appreciation Rights (SARs)
Stock Appreciation Rights (SARs) [Member]
Intangible Asset, Finite-Lived
Intangible Asset, Finite-Lived [Table Text Block]
City Area Code
City Area Code
Debt/accrued interest convertible into shares of common stock
Convertible Debt Securities [Member]
SUBSEQUENT EVENTS
Subsequent Events [Text Block]
Notes receivable, net of allowance for credit losses
Beginning balance, net of allowance for credit losses
Ending balance, net of allowance for credit losses
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss, Noncurrent
Name
Forgone Recovery, Individual Name
Non-GAAP Measure Description
Non-GAAP Measure Description [Text Block]
Weighted-Average Grant Date Fair Value
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Notes Receivable [Roll Forward]
Notes Receivable [Roll Forward]
Notes Receivable
Subordinated Loan Agreement
Subordinated Loan Agreement [Member]
Subordinated Loan Agreement
Entity [Domain]
Entity [Domain]
Issued to employees, directors and service providers
Warrants Issued To Employees, Directors And Service Providers [Member]
Warrants Issued To Employees, Directors And Service Providers
Beginning balance (in shares)
Ending balance (in shares)
Preferred stock, shares issued (in shares)
Preferred Stock, Shares Issued
Conversion of puttable common stock into common stock
Conversion of Stock, Amount Converted
NATURE OF OPERATIONS
Nature of Operations [Text Block]
Issuance of common stock in connection with IPO, net of underwriting discounts and commissions and offering costs (in shares)
Stock Issued During Period, Shares, New Issues
Accounts payable and other liabilities
Accounts payable and other liabilities
Accounts Payable and Other Accrued Liabilities, Current
2030 and thereafter
Lessor, Operating Lease, Payment to be Received, After Year Three
Lessor, Operating Lease, Payment to be Received, After Year Three
Compensation expense
Share-Based Payment Arrangement, Expense
Measurement Basis [Axis]
Measurement Basis [Axis]
Common stock reacquired in exchange for pre-funded warrant (in shares)
Stock repurchased and retired during period, shares (in shares)
Stock Repurchased and Retired During Period, Shares
Options exercised (in shares)
Exercised (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period
Granted (in dollars per share)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
Deferred transaction revenue recognized
Contract with Customer, Liability, Revenue Recognized
Payables and Accruals [Abstract]
Accrued taxes payable
Taxes Payable, Current
Cashless Exercise Of Warrants
Cashless Exercise Of Warrants [Member]
Cashless Exercise Of Warrants
Cancelled or forfeited (in dollars per share)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value
Deferred offering costs not yet paid
Deferred Offering Costs Incurred But Not yet Paid
Deferred Offering Costs Incurred But Not yet Paid
Erroneously Awarded Compensation Recovery
Erroneously Awarded Compensation Recovery [Table]
Total performance bonds and guarantee funds
Deposit Assets
Payment of other debt issuance costs
Payments of Debt Issuance Costs
Entity Current Reporting Status
Entity Current Reporting Status
Net cash provided by financing activities
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation
Total Shareholder Return Amount
Total Shareholder Return Amount
Customer Two
Customer Two [Member]
Customer Two
Exchange memberships and stock, at cost
Memberships in Exchanges Owned, Noncurrent
Memberships in Exchanges Owned, Noncurrent
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract]
Cash flows from financing activities:
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]
Fixed assets and internally developed software, net
Total, net
Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization
Exercise Price Range 20
Exercise Price Range 20 [Member]
Exercise Price Range 20
Clearing house performance bonds and guarantee funds
Restricted cash (clearing house performance bonds and guarantee funds)
Deposit Assets, Excluding Participant Margin Deposits, Current
Deposit Assets, Excluding Participant Margin Deposits, Current
Schedule of Supplemental Balance Sheet Information Related to Operating Leases
Assets And Liabilities, Lessee, Operating Leases [Table Text Block]
Assets And Liabilities, Lessee, Operating Leases
Derivative asset
Derivative assets (current portion)
Derivative Asset
Intangible Asset, Finite-Lived, Class [Axis]
Intangible Asset, Finite-Lived, Class [Axis]
Number of debt instruments held
Debt Instrument, Number Of Instruments Held
Debt Instrument, Number Of Instruments Held
Underlying Securities
Award Underlying Securities Amount
Fair Value
Estimate of Fair Value Measurement [Member]
REVENUE RECOGNITION
Revenue from Contract with Customer [Text Block]
Issuance of common stock in connection with IPO, net of underwriting discounts and commissions and offering costs
Stock Issued During Period, Value, New Issues
Notes issued, net of allowance for credit losses
Financing Receivable, Excluding Accrued Interest, Increase From Issuance, Net Of Allowance For Credit Losses
Financing Receivable, Excluding Accrued Interest, Increase From Issuance, Net Of Allowance For Credit Losses
Number of equity rights programs introduced
Number Of Equity Rights Programs Introduced
Number Of Equity Rights Programs Introduced
Convertible Preferred Stock
Preferred Stock [Member]
Equity Securities without Readily Determinable Fair Value [Line Items]
Equity Securities without Readily Determinable Fair Value [Line Items]
Weighted average discount rate
Operating Lease, Weighted Average Discount Rate, Percent
Exchange licenses
Exchange License [Member]
Exchange License
Schedule of Unvested Restricted Stock Activities
Nonvested Restricted Stock Shares Activity [Table Text Block]
Segment Reporting [Table]
Segment Reporting [Table]
Data Center
Data Center [Member]
Data Center
Related Party Transaction [Table]
Related Party Transaction [Table]
Cash
Cash [Member]
Schedule of Lease Cost, Supplemental Cash Flow Information Related to Operating Leases, and Weighted-Average Remaining Lease Term and Weighted-Average Discount for Operating and Finance Leases
Lease, Cost [Table Text Block]
Payables to customers
Broker-Dealer, Payable To Customer, Current
Broker-Dealer, Payable To Customer, Current
Other current assets
Other Assets, Current
Commitments and Contingencies Disclosure [Abstract]
All Trading Arrangements
All Trading Arrangements [Member]
Other Performance Measure, Amount
Other Performance Measure, Amount
Award Timing MNPI Considered
Award Timing MNPI Considered [Flag]
Deposit assets, interest distributed
Deposit Assets, Interest Distributed
Deposit Assets, Interest Distributed
Purchase obligation, to be paid, year four
Purchase Obligation, to be Paid, Year Four
Current Fiscal Year End Date
Current Fiscal Year End Date
Futures
Futures Segment [Member]
Futures Segment
Gain on sale of business
Gain on sale of business
Gain (Loss) on Disposition of Business
Non-PEO NEO Average Total Compensation Amount
Non-PEO NEO Average Total Compensation Amount
Provision for uncollectible amount
Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal)
Liabilities
Broker-Dealer, Payable to Other Broker-Dealer and Clearing Organization [Abstract]
Information technology and communication costs
Communications and Information Technology
Fixed assets
Property, Plant And Equipment, Excluding Internally Developed Software [Member]
Property, Plant And Equipment, Excluding Internally Developed Software
Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year
Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member]
Entity File Number
Entity File Number
Schedule of Information About Warrant Activities and Additional Information Regarding Warrants Outstanding
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
Share-based compensation, net of cancellations and forfeitures
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture
Schedule of Stock Option Activity
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
Weighted Average Exercise Price
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Recovery of Erroneously Awarded Compensation Disclosure [Line Items]
Issuance of common stock - warrant exercises (in shares)
Stock Issued During Period, Shares, Warrants Exercised
Stock Issued During Period, Shares, Warrants Exercised
Measure:
Measure [Axis]
2027 and thereafter
Long-Term Debt, Maturity, After Remainder Of Fiscal Year
Long-Term Debt, Maturity, After Remainder Of Fiscal Year
Treasury stock, common, shares (in shares)
Beginning balance (in shares)
Ending balance (in shares)
Treasury Stock, Common, Shares
Equity Components [Axis]
Equity Components [Axis]
Related Party
Related Party [Member]
Entity Interactive Data Current
Entity Interactive Data Current
Less: current lease liabilities
Less: current lease liabilities
Finance Lease, Liability, Current
Revised funding model operational period
Gain Contingency, Revised Funding Model Operational Period
Gain Contingency, Revised Funding Model Operational Period
Entity Small Business
Entity Small Business
Comprehensive income (loss) attributable to Miami International Holdings, Inc., net of tax
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Property, Plant, and Equipment [Line Items]
Property, Plant, and Equipment [Line Items]
MNPI Disclosure Timed for Compensation Value
MNPI Disclosure Timed for Compensation Value [Flag]
Dorman Trading
Dorman Trading [Member]
Dorman Trading
Other assets, net
Total other assets, net
Other Assets, Noncurrent
2029
Finance Lease, Liability, to be Paid, Year Three
Document Type
Document Type
Proceeds from sale of business, net of cash and cash equivalents sold
Payments to Acquire Businesses, Net of Cash Acquired
Puttable common stock, value, outstanding
Puttable Common Stock, Value, Outstanding
Puttable Common Stock, Value, Outstanding
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Granted (in shares)
Class of Warrant Or Right, Granted
Class of Warrant Or Right, Granted
Loss on debt extinguishment
Loss on debt extinguishment
Gain (Loss) on Extinguishment of Debt
Intangible Asset, Indefinite-Lived
Intangible Asset, Indefinite-Lived [Table Text Block]
Reconciliation of cash, cash equivalents, segregated cash, and restricted cash:
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation [Abstract]
Exercisable, aggregate intrinsic value
Stock Options Exercisable, Aggregate Intrinsic Value
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value
Statement of Stockholders' Equity [Abstract]
Proceeds from long-term debt
Proceeds from Issuance of Long-Term Debt
Local Phone Number
Local Phone Number
Prepayment premium and other expenses paid related to debt repayment
Payment for Debt Extinguishment or Debt Prepayment Cost
Commitments and contingencies (Note 15)
Commitments and Contingencies
Option Indexed to Issuer's Equity, Type [Domain]
Option Indexed to Issuer's Equity, Type [Domain]
MIAXdx
MIAXdx [Member]
MIAXdx
Antidilutive Securities, Name [Domain]
Antidilutive Securities, Name [Domain]
Total, gross
Property, Plant, and Equipment, before Accumulated Depreciation, Depletion, and Amortization
Changed Peer Group, Footnote
Changed Peer Group, Footnote [Text Block]
2030
Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Four
Purchases of investments
Payments To Acquire Investments, Excluding Certificates Of Deposits
Payments To Acquire Investments, Excluding Certificates Of Deposits
2029 Senior Secured Term Loan Warrants - Group 2
2029 Senior Secured Term Loan Warrants - Group 2 [Member]
2029 Senior Secured Term Loan Warrants - Group 2
Executive Category:
Executive Category [Axis]
Schedule of Unvested Restricted Stock Units Activities
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]
Counterparty Name [Axis]
Counterparty Name [Axis]
Services transferred at a point in time
Transferred at Point in Time [Member]
Liabilities and Stockholders’ Equity
Liabilities and Equity [Abstract]
Unsecured Revolving Lines Of Credit - MIAX Futures, Instrument One
Unsecured Revolving Lines Of Credit - MIAX Futures, Instrument One [Member]
Unsecured Revolving Lines Of Credit - MIAX Futures, Instrument One
Non-PEO NEO Average Compensation Actually Paid Amount
Non-PEO NEO Average Compensation Actually Paid Amount
Warrants outstanding (in shares)
Beginning balance (in shares)
Ending balance (in shares)
Number of Warrants Outstanding (in shares)
Class of Warrant or Right, Outstanding
Supplemental disclosure of cash transactions:
Supplemental Cash Flow Information [Abstract]
John Smollen [Member]
John Smollen
PEO Name
PEO Name
Leasehold improvements
Leasehold Improvements [Member]
Cash paid for income taxes
Income Tax Paid, before Refund Received
General, administrative, and other expenses
Segment Reporting, Other Segment Item, Amount
Long-Lived Asset, Class [Axis]
Long-Lived Asset, Class [Axis]
Stock Price or TSR Estimation Method
Stock Price or TSR Estimation Method [Text Block]
Entity Tax Identification Number
Entity Tax Identification Number
Foreign Currency Translation
Intangible Asset, Finite-Lived, Foreign Currency Translation Gain (Loss)
Exercised (in dollars per share)
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price
Other
Other Accrued Liabilities, Current
Entity Incorporation, State or Country Code
Entity Incorporation, State or Country Code
Aggregate Erroneous Compensation Not Yet Determined
Aggregate Erroneous Compensation Not Yet Determined [Text Block]
Material Terms of Trading Arrangement
Material Terms of Trading Arrangement [Text Block]
Request for exemptive relief, percentage of costs
Financing Receivable, Request For Exemptive Relief, Percentage Of Costs
Financing Receivable, Request For Exemptive Relief, Percentage Of Costs
Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year
Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member]
Debt Instrument [Axis]
Debt Instrument [Axis]
GOODWILL, INTANGIBLE ASSETS, DERIVATIVES, AND DIGITAL ASSETS
Intangible Asset, Goodwill, Derivatives, And Digital Assets [Text Block]
Intangible Asset, Goodwill, Derivatives, And Digital Assets
Share based compensation expense
Share-Based Payment Arrangement, Noncash Expense
Disposal Group Name [Axis]
Disposal Group Name [Axis]
Reclassification of puttable warrants issued with debt upon IPO
Adjustments To Additional Paid In Capital, Reclassification Of Puttable Warrants Issued With Debt
Adjustments To Additional Paid In Capital, Reclassification Of Puttable Warrants Issued With Debt
Conversion of puttable common stock into non-puttable common stock and conversion of preferred shares into common shares upon IPO (in shares)
Stock Issued During Period, Shares, Conversion of Convertible Securities
Related party transaction, amounts of transaction
Related Party Transaction, Amounts of Transaction
Basic (in dollars per share)
Earnings Per Share, Basic
Total current assets
Assets, Current
Insider Trading Arrangements [Line Items]
Unlocked On May 20, 2027
Unlocked On May 20, 2027 [Member]
Unlocked On May 20, 2027
Total long-term debt
Long-Term Debt, Excluding Current Maturities
Short-term lease cost
Short-Term Lease, Cost
Accounts receivable, net
Accounts Receivable, after Allowance for Credit Loss, Current
Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table
Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member]
Gain on disposal
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal
Fair Value Measurement [Domain]
Fair Value Measurement [Domain]
Maximum annual contributions per employee, percent
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent
Recoveries collected
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery
Compensation Actually Paid vs. Company Selected Measure
Compensation Actually Paid vs. Company Selected Measure [Text Block]
Cover [Abstract]
Disposal Group, Held-for-Sale or Disposed of by Sale, Not Discontinued Operations
Disposal Group, Held-for-Sale or Disposed of by Sale, Not Discontinued Operations [Member]
2029 Senior Secured Term Loan Warrants
2029 Senior Secured Term Loan Warrants [Member]
2029 Senior Secured Term Loan Warrants
Treasury stock, weighted average cost per share (in dollars per share)
Treasury Stock, Common, Weighted Average Cost Per Share
Treasury Stock, Common, Weighted Average Cost Per Share
Gain on observable price change
Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Annual Amount
Concentration risk, percentage
Concentration Risk, Percentage
Stay period
Gain Contingency, Stay Period
Gain Contingency, Stay Period
Receivable from broker-dealers and futures commission merchants
Other Receivable from Broker-Dealer and Clearing Organization
Equity Awards Adjustments
Equity Awards Adjustments [Member]
Purchase obligation, to be paid, remainder of fiscal year
Purchase Obligation, to be Paid, Remainder of Fiscal Year
Notes payable
Notes Payable, Other Payables [Member]
Schedule of Maturity Analysis of Lease Receivables
Lessor, Operating Lease, Payment to be Received, Maturity [Table Text Block]
Other liabilities
Increase (Decrease) in Other Operating Liabilities
Plan Name [Axis]
Plan Name [Axis]
Schedule of Changes in Notes Receivable, Net of Allowance
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
Intangible Asset, Finite-Lived, after Accumulated Amortization [Abstract]
Intangible Asset, Finite-Lived, after Accumulated Amortization [Abstract]
Other, net
Other Nonoperating Income (Expense)
Equity Securities without Readily Determinable Fair Value [Table]
Equity Securities without Readily Determinable Fair Value [Table]
Schedule of Accounts Payable and Other Liabilities
Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]
Foreign currency translation adjustments, tax expense (benefit)
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax, Portion Attributable to Parent
Stockholders’ equity:
Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Contingent Promissory Notes
Contingent Promissory Notes [Member]
Contingent Promissory Notes
Cancelled or forfeited (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period
Proceeds from sale of crypto asset
Proceeds from Disposal, Crypto Asset
Conversion of puttable common stock into non-puttable common stock and conversion of preferred shares into common shares upon IPO
Stock Issued During Period, Value, Conversion of Convertible Securities
Preferred stock, shares authorized (in shares)
Preferred Stock, Shares Authorized
Class of Stock [Domain]
Class of Stock [Domain]
Statement of Cash Flows [Abstract]
Aggregate Available
Trading Arrangement, Securities Aggregate Available Amount
Exercise Price Range 22
Exercise Price Range 22 [Member]
Exercise Price Range 22
INCOME TAXES
Income Tax Disclosure [Text Block]
Accounts payable
Accounts Payable, Current
Other
Other Noncash Income (Expense)
Pay vs Performance Disclosure
Pay vs Performance Disclosure [Table]
Entity Filer Category
Entity Filer Category
Number of Financial Accountability Milestones
Number Of Financial Accountability Milestones
Number Of Financial Accountability Milestones
Capitalization of internally developed software
Payments to Develop Software
FCM license
FCM License [Member]
FCM License
Proceeds from sale of Pyth tokens
Proceeds from Crypto Asset, Operating Activity
Finance Lease
Finance Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract]
Restricted cash (participant margin deposits)
Participant Margin Deposit Assets, Current
Participant Margin Deposit Assets, Current
Concentration Risk Benchmark [Domain]
Concentration Risk Benchmark [Domain]
Investments, Debt and Equity Securities [Abstract]
Exercise Of Options
Exercise Of Options [Member]
Exercise Of Options
Entity Address, Address Line Two
Entity Address, Address Line Two
Stock, Class of Stock [Table]
Stock, Class of Stock [Table]
Section 31 fees
Section 31 Fees Expense
Section 31 Fees Expense
Current assets:
Assets, Current [Abstract]
Entity Address, Address Line One
Entity Address, Address Line One
Right-of-use assets obtained in exchange for new operating lease liabilities
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability
Vested (in dollars per share)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value
Income tax benefit (expense)
Income Tax Expense (Benefit)
Options
Options Segment [Member]
Options Segment
Write-offs charged against the allowance
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff
Loss contingency, accrual, current
Loss Contingency, Accrual, Current
Percentage of retained equity interest buyer has right to acquire
Disposal Group, Including Discontinued Operation, Percentage Of Retained Equity Interest Buyer Has Right To Acquire
Disposal Group, Including Discontinued Operation, Percentage Of Retained Equity Interest Buyer Has Right To Acquire
Statement [Table]
Statement [Table]
Proceeds from issuance of common stock in connection with initial public offering, net of underwriting discounts and commissions and offering costs ...
Proceeds from Issuance Initial Public Offering
Interest income
Investment Income, Interest
Debt conversion, converted instrument, amount
Debt Conversion, Converted Instrument, Amount
Exercise Price Range 23
Exercise Price Range 23 [Member]
Exercise Price Range 23
Digital assets (see Note 11)
Digital assets
Crypto Asset, Fair Value, Noncurrent
2022 Plan
2022 Equity Incentive Plan [Member]
2022 Equity Incentive Plan
Deferral of revenue
Contract With Customer, Liability, Increase From Deferral Of Revenue
Contract With Customer, Liability, Increase From Deferral Of Revenue
Long-term debt, term
Long-Term Debt, Term
EMPLOYEE BENEFIT PLAN
Defined Contribution Plan [Text Block]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Basis of Presentation and Significant Accounting Policies [Text Block]