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CLEARING OPERATIONS - Clearing Participant (Details) $ in Millions | Sep. 30, 2025 USD ($) | Dec. 31, 2024 USD ($)
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Clearing Operations |  |
Cboe Clear Europe central bank account | $ 599.4 | $ 841.4
Cboe Clear Europe reverse repurchase and other | 1,040.4 | 0.0
Cboe Clear U.S. customer bank deposits | 1.0 | 4.1
Total cash margin deposits, clearing funds, and interoperability funds | 1,640.8 | 845.5
Cboe Clear Europe non-cash contributions | $ 1,274.5 | 997.4
Minimum collateralization, as a percent | 1.02 |
Margin Deposits |  |
Clearing Operations |  |
Cboe Clear Europe central bank account | $ 528.7 | 378.4
Cboe Clear Europe reverse repurchase and other | 322.1 | 0.0
Cboe Clear U.S. customer bank deposits | 1.0 | 4.1
Total cash margin deposits, clearing funds, and interoperability funds | 851.8 | 382.5
Cboe Clear Europe non-cash contributions | 881.7 | 691.4
Clearing Funds |  |
Clearing Operations |  |
Cboe Clear Europe central bank account | 9.5 | 173.7
Cboe Clear Europe reverse repurchase and other | 249.9 | 0.0
Cboe Clear U.S. customer bank deposits | 0.0 | 0.0
Total cash margin deposits, clearing funds, and interoperability funds | 259.4 | 173.7
Cboe Clear Europe non-cash contributions | 94.5 | 80.1
Interoperability Funds |  |
Clearing Operations |  |
Cboe Clear Europe central bank account | 61.2 | 289.3
Cboe Clear Europe reverse repurchase and other | 468.4 | 0.0
Cboe Clear U.S. customer bank deposits | 0.0 | 0.0
Total cash margin deposits, clearing funds, and interoperability funds | 529.6 | 289.3
Cboe Clear Europe non-cash contributions | $ 298.3 | $ 225.9

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