FAIR VALUE MEASUREMENT

Schedule of fair value hierarchy for assets and liabilities measured on a nonrecurring basis

The following tables present the Company’s fair value hierarchy for certain assets and liabilities held by the Company as of September 30, 2023 and December 31, 2022 (in millions):


	September 30, 2023
	Total		Level 1		Level 2		Level 3
Assets:
U.S. Treasury securities (1)	$	0.5	$	0.5	$	—	$	—
Deferred compensation plan assets (1)		33.5		33.5		—		—
Digital assets - safeguarded assets		40.2		40.2		—		—
Digital assets held (2)		0.1		0.1		—		—
Total assets	$	74.3	$	74.3	$	—	$	—
Liabilities:
Contingent consideration liabilities	$	28.2	$	—	$	—	$	28.2
Deferred compensation plan liabilities (3)		33.5		33.5		—		—
Digital assets - safeguarded liabilities		40.2		40.2		—		—
Cboe Digital restricted common units liability (3)		18.7		—		—		18.7
Cboe Digital warrant liability (3)		5.9		—		—		5.9
Debt		1,311.5		—		1,311.5		—
Total liabilities	$	1,438.0	$	73.7	$	1,311.5	$	52.8


	December 31, 2022
	Total		Level 1		Level 2		Level 3
Assets:
U.S. Treasury securities (1)	$	64.2	$	64.2	$	—	$	—
Deferred compensation plan assets (1)		27.5		27.5		—		—
Digital assets - safeguarded assets		22.9		22.9		—		—
Digital assets held (2)		0.9		0.9		—		—
Total assets	$	115.5	$	115.5	$	—	$	—
Liabilities:
Contingent consideration liabilities	$	39.1	$	—	$	—	$	39.1
Deferred compensation plan liabilities (3)		27.5		27.5		—		—
Digital assets - safeguarded liabilities		22.9		22.9		—		—
Cboe Digital restricted common units liability (3)		15.5		—		—		15.5
Cboe Digital warrant liability (3)		5.9		—		—		5.9
Debt		1,573.9		—		1,573.9		—
Total liabilities	$	1,684.8	$	50.4	$	1,573.9	$	60.5

(1)	These amounts are reflected within financial investments in the condensed consolidated balance sheets.

(2)	These amounts are reflected within intangible assets, net in the condensed consolidated balance sheets.

(3)	These amounts are reflected within other non-current liabilities in the condensed consolidated balance sheets.

Summary of changes in the fair value of Level 3 financial liabilities

The following table sets forth a summary of changes in the fair value of the Company’s Level 3 financial liabilities during the three and nine months ended September 30, 2023 (in millions):


	Level 3 Financial Liabilities for the Three Months Ended September 30, 2023
	Balance at		Realized (Gains)								Foreign		Balance at
	Beginning of		Losses during								Currency		End of
	Period		Period		Adjustments		Additions		Settlements		Translation		Period
Liabilities:
Contingent consideration liabilities	$	29.1	$	—	$	—	$	—	$	(0.7)	$	(0.2)	$	28.2
Cboe Digital restricted common units liability		15.6		—		—		3.1		—		—		18.7
Cboe Digital warrant liability		5.9		—		—		—		—		—		5.9
Total liabilities	$	50.6	$	—	$	—	$	3.1	$	(0.7)	$	(0.2)	$	52.8


	Level 3 Financial Liabilities for the Nine Months Ended September 30, 2023
	Balance at		Realized (Gains)								Foreign		Balance at
	Beginning of		Losses during								Currency		End of
	Period		Period		Adjustments		Additions		Settlements		Translation		Period
Liabilities:
Contingent consideration liabilities	$	39.1	$	—	$	—	$	—	$	(10.9)	$	—	$	28.2
Cboe Digital restricted common units liability		15.5		—		0.1		3.1		—		—		18.7
Cboe Digital warrant liability		5.9		—		—		—		—		—		5.9
Total liabilities	$	60.5	$	—	$	0.1	$	3.1	$	(10.9)	$	—	$	52.8