DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

3 Months Ended

Mar. 31, 2024

Accounting Policies [Abstract]

Schedule of Concentration of Credit Risk

We derived transaction-based revenues from individual market makers in excess of 10% of total revenues, as follows:

	Three Months Ended March 31,
	2023		2024
Market maker:
Citadel Securities, LLC	13	%	12	%
Wintermute Trading Ltd	—	%	10	%
All others individually less than 10%	32	%	30	%
Total as percentage of total revenue:	45	%	52	%