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STOCK-BASED COMPENSATION - Cboe Digital Restricted Common Units And Cboe Digital Warrants (Details) - USD ($) |  |  |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Nov. 18, 2023 | Nov. 28, 2022 | Nov. 18, 2022 | Mar. 31, 2023 | Dec. 31, 2023 | Dec. 31, 2022
Cboe Digital Restricted Common Units |  |  |  |  |  |
Stock-based Compensation |  |  |  |  |  |
Interest rate (as a percent) |  |  |  |  | 5.00% |
Adjustment to contra-revenue balance |  |  |  | $ 100,000 |  |
Contra-revenue recognized |  |  |  |  | $ 3,100,000 | $ 0
Contra-revenue is expected to be recognized |  |  |  |  | 11,000,000.0 | $ 14,000,000.0
Change in fair value of option |  |  |  |  | $ 0 |
Vesting period | 5 years |  |  |  |  |
Risk-free interest rate, minimum |  |  |  |  | 3.81% |
Risk-free interest rate, Maximum |  |  |  |  | 3.90% |
Expected dividend rate |  |  |  |  | 0.00% |
Number of shares |  |  |  |  |  |
Beginning balance (in shares) |  |  |  |  | 185 |
Granted (in shares) |  | 185 |  |  |  | 185
Ending balance of Outstanding and exercisable (in shares) |  |  |  |  | 185 | 185
Weighted average grant date fair value |  |  |  |  |  |
Beginning balance (in USD per share) |  |  |  |  | $ 0.3 |
Granted (in dollars per share) |  |  |  |  |  | $ 0.3
Ending balance of Outstanding and exercisable (in USD per share) |  |  |  |  | $ 0.3 | $ 0.3
Weighted average remaining contractual term of Outstanding and exercisable (in years) |  |  |  |  | 5 years | 6 years
Cboe Digital Restricted Common Units | Minimum |  |  |  |  |  |
Stock-based Compensation |  |  |  |  |  |
Expected volatility |  |  |  |  | 60.00% |
Expected term (in years) |  |  |  |  | 3 years 10 months 24 days |
Cboe Digital Restricted Common Units | Maximum |  |  |  |  |  |
Stock-based Compensation |  |  |  |  |  |
Expected volatility |  |  |  |  | 65.00% |
Expected term (in years) |  |  |  |  | 5 years 10 months 24 days |
Cboe Digital Incentive Program Units |  |  |  |  |  |
Stock-based Compensation |  |  |  |  |  |
Term of incentive program |  |  |  |  | 2 years |
Contra revenue recognized |  |  |  |  | $ 600,000 |
Contra revenue included with other assets |  |  |  |  | $ 2,500,000 |
Cboe Digital Incentive Program Units | Maximum |  |  |  |  |  |
Stock-based Compensation |  |  |  |  |  |
Common units authorized |  |  |  |  | 20 |
Cboe Digital Warrant Units |  |  |  |  |  |
Stock-based Compensation |  |  |  |  |  |
Contra-revenue recognized |  |  |  |  | $ 1,300,000 | $ 0
Contra-revenue is expected to be recognized |  |  |  |  | $ 4,600,000 | $ 5,900,000
Number of units called by warrants |  |  | 80 |  |  |
Warrants vested (in shares) |  |  |  |  | 40 |
Class of warrant or right exercised |  |  |  |  | 0 |
Change in fair value of warrants |  |  |  |  | $ 0 |
Vesting period |  |  | 2 years |  |  |
Risk-free interest rate |  |  |  |  | 3.89% |
Expected dividend rate |  |  |  |  | 0.00% |
Expected volatility |  |  |  |  | 65.00% |
Expected term (in years) |  |  |  |  | 4 years |
Number of shares |  |  |  |  |  |
Beginning balance (in shares) |  |  |  |  | 80 |
Granted (in shares) |  |  |  |  |  | 80
Vested (in shares) |  |  |  |  | 40 |
Ending balance of Outstanding and exercisable (in shares) |  |  |  |  | 40 | 80
Ending balance of outstanding (in shares) |  |  |  |  | 80 |
Weighted average grant date fair value |  |  |  |  |  |
Beginning balance (in USD per share) |  |  |  |  | $ 0.2 |
Granted (in dollars per share) |  |  |  |  |  | $ 0.2
Vested (in USD per share) |  |  |  |  | 0.2 |
Ending balance of Outstanding and exercisable (in USD per share) |  |  |  |  | $ 0.2 | $ 0.2

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