BYX Exchange Updates Fees to Cover National Market Audit Expenses
Published Date: 5/12/2026
Notice
Summary
Starting May 1, 2026, Cboe BYX Exchange is setting new fees for industry members to cover their share of the costs for the Consolidated Audit Trail (CAT) system through the end of the year. This means brokers and traders who are part of national exchanges will see updated fees to help fund this important market tracking tool. The changes kick in immediately and keep the CAT system running smoothly and fairly.
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Analyzed Economic Effects
3 provisions identified: 0 benefits, 3 costs, 0 mixed.
Exchange fee: $0.000001 per share
Industry members that act as CAT Executing Brokers (CEBBs and CEBS) will be charged CAT Fee 2026-1 at a rate of $0.000001 per executed equivalent share for transactions in Eligible Securities. The fee is effective for the period from May 1, 2026 through December 31, 2026 and is calculated using executed equivalent shares (e.g., NMS Stocks count as 1 per share; Listed Options use the contract multiplier such as 100; OTC Equity shares count as 0.01).
Budgeted CAT costs and allocation
The budgeted CAT costs for May 1, 2026 through December 31, 2026 are $15,149,648 in total. CEBBs collectively are allocated one-third of that amount ($5,049,882.67) and CEBSs collectively are allocated one-third of that amount ($5,049,882.67).
Brokers may pass CAT fees to clients
CEBBs and CEBSs may, but are not required to, pass through their CAT Fees to their clients; those clients may in turn pass fees to their clients until the fee is ultimately imposed on the account that executed the transaction. The underlying CAT Fee being passed through is $0.000001 per executed equivalent share for the May 1–December 31, 2026 period.
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