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DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
6 Months Ended
Jun. 30, 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
June 30,
Six Months Ended
June 30,
2023202420232024
Market maker:
Citadel Securities, LLC12 %12 %13 %12 %
All others individually less than 10%26 %34 %28 %36 %
Total as percentage of total revenue:38 %46 %41 %48 %