REGULATORY CAPITAL (Tables)

3 Months Ended

Mar. 31, 2026

Broker-Dealer [Abstract]

Schedule of Actual and Minimum Regulatory Capital Requirements of the Subsidiary

The following table presents the Company’s subsidiaries with regulatory capital requirements discussed above, as well as the actual and minimum regulatory capital requirements of the subsidiary as of March 31, 2026 (in millions):

Subsidiary	Regulatory Authority	Actual		Minimum Requirement
Cboe Trading	FINRA/SEC	$	16.9	$	0.9
BIDS Trading	FINRA/SEC	12.0		0.2
Cboe Fixed Income	FINRA/SEC	7.1		0.1
Cboe Europe	FCA	68.3		35.9
Cboe Chi-X Europe	FCA	0.3		0.1
Cboe NL	Dutch Authority for Financial Markets	16.4		8.1
Cboe Clear Europe	DNB	136.8		81.4
CFE	CFTC	131.7		41.2
Cboe SEF	CFTC	14.8		2.5
Cboe Digital Exchange	CFTC	19.0		—
Cboe Clear U.S.	CFTC	29.8		15.0
Cboe Australia	ASIC	17.4		6.0