# 2026-10830: Cboe EDGX Clarifies Mid-Month Data Fee Proration Rules

2026-10830, Self-Regulatory Organizations; Cboe EDGX Exchange, Inc.; Notice of Filing and Immediate Effectiveness of a Proposed Rule Change To Amend Its Fee Schedule To Clarify That Requests for Mid-Month Subscriptions and Ad-Hoc Historical Requests for Open-Close Data Will Be Prorated, is a Federal Register notice from Securities and Exchange Commission published 2026-06-01, effective 2026-05-19; PRIA reads it as touching household money (as of 2026-06-08).

- Canonical: https://policyrisk.com/federal-register/2026-10830
- As of: 2026-06-08
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: 2026-10830
- Title: Self-Regulatory Organizations; Cboe EDGX Exchange, Inc.; Notice of Filing and Immediate Effectiveness of a Proposed Rule Change To Amend Its Fee Schedule To Clarify That Requests for Mid-Month Subscriptions and Ad-Hoc Historical Requests for Open-Close Data Will Be Prorated
- Type: Notice
- Agencies: Securities and Exchange Commission
- Citation: 91 FR 32467
- Published: 2026-06-01
- Effective: 2026-05-19
- Comments close: not stated
- Significant: no
- Touches household money: yes
- Regulation identifier numbers: none
- Last updated: 2026-06-08

## In one line

Cboe EDGX Clarifies Mid-Month Data Fee Proration Rules

## 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.

## Effects PRIA read

- Prorated Fees for Mid-Month Data: benefit, low. 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 a…
- Proration Applies to Ad-Hoc Historical Requests: benefit, low. 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…
- Proration Applies Equally to All Buyers: benefit, low. 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: benefit, low. 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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## Sources
- [2026-10830 on federalregister.gov](https://www.federalregister.gov/documents/2026/06/01/2026-10830/self-regulatory-organizations-cboe-edgx-exchange-inc-notice-of-filing-and-immediate-effectiveness-of)
- [2026-10830 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2026-06-01/pdf/2026-10830.pdf)

## Related
- [Previous: 2026-10829, Self-Regulatory Organizations; Cboe BZX Exchange, Inc.; Notice of Filing and Im…](https://policyrisk.com/federal-register/2026-10829)
- [Next: 2026-10831, Self-Regulatory Organizations; Cboe C2 Exchange, Inc.; Notice of Filing and Imm…](https://policyrisk.com/federal-register/2026-10831)
- [All Federal Register documents](https://policyrisk.com/federal-register)

Source: PRIA, https://policyrisk.com/federal-register/2026-10830 (as of 2026-06-08).