Cboe EDGX Clarifies Mid-Month Data Fee Proration Rules
Published Date: 6/1/2026
Notice
Summary
Cboe EDGX Exchange is updating its fee rules to make it clear that if you start a subscription or request special historical Open-Close data partway through the month, you’ll only pay for the time you use. This change affects anyone buying these data services and takes effect right away, helping customers save money by paying fair, prorated fees.
Analyzed Economic Effects
4 provisions identified: 4 benefits, 0 costs, 0 mixed.
Prorated Fees for Mid-Month Data
If you subscribe mid-month or request ad-hoc historical Open-Close data, the Exchange will prorate the fee so you only pay for the portion of the month you use. This proration applies to End-of-Day (EOD) Open-Close data, Ten-Minute Intraday Open-Close data, and One-Minute Intraday Open-Close data and is effective upon filing on May 19, 2026.
Proration Applies to Ad-Hoc Historical Requests
When you request ad-hoc historical Open-Close files for specific dates, the Exchange will prorate the fee so you only pay for those requested dates. This clarification covers historical requests for EOD, Ten-Minute Intraday, and One-Minute Intraday Open-Close data and took effect upon the filing on May 19, 2026.
Proration Applies Equally to All Buyers
The Exchange states the prorated fees for mid-month subscriptions and ad-hoc historical Open-Close requests will apply equally to all users who choose to purchase the data. The Exchange describes this treatment as equitable and not unfairly discriminatory, effective upon filing on May 19, 2026.
Open-Close Data Is Voluntary To Buy
The Exchange reiterates that all Open-Close Data products are optional and no market participant is required to purchase them. You may request or decline these EOD and Intraday Open-Close data products based on your business needs; this statement is part of the filing effective May 19, 2026.
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