# 2025-15727: Cboe BZX Unveils New Timestamp Tool for Market Watchers

2025-15727, Self-Regulatory Organizations; Cboe BZX Exchange, Inc.; Notice of Filing and Immediate Effectiveness of a Proposed Rule Change To Amend Rule 21.15(b) (Exchange Data Products) To Adopt a New Market Data Report, is a Federal Register notice from Securities and Exchange Commission published 2025-08-19, effective 2025-08-05; PRIA reads it as touching household money (as of 2026-06-08).

- Canonical: https://policyrisk.com/federal-register/2025-15727
- As of: 2026-06-08
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: 2025-15727
- Title: Self-Regulatory Organizations; Cboe BZX Exchange, Inc.; Notice of Filing and Immediate Effectiveness of a Proposed Rule Change To Amend Rule 21.15(b) (Exchange Data Products) To Adopt a New Market Data Report
- Type: Notice
- Agencies: Securities and Exchange Commission
- Citation: 90 FR 40444
- Published: 2025-08-19
- Effective: 2025-08-05
- Comments close: not stated
- Significant: no
- Touches household money: yes
- Regulation identifier numbers: none
- Last updated: 2026-06-08

## In one line

Cboe BZX Unveils New Timestamp Tool for Market Watchers

## Summary

Cboe BZX Exchange is adding a brand-new market data report to its existing data products, making it easier for traders and investors to get detailed timestamp info. This change kicks in right away and could help market participants track trades more precisely without extra costs. If you use Cboe’s data, this update is for you!

## Effects PRIA read

- New All Cancels Market Data Report: mixed, medium. Cboe BZX is adding an optional All Cancels Report to its Cboe Timestamping Service that Members may subscribe to. The report is intended to show all cancel-related messages originated by the subscribing firm (including cancel, cancel rejected, and mass/purge cancels) and is available to any Member…
- Delayed, Firm-Only Historical Data (T+1): benefit, low. The All Cancels Report will provide historical data only (generally on a T+1 basis) and will not include real-time market data or any other firm's information. Each report will contain only the subscribing Member's own cancel-message data.
- Subscription Fees Will Be Charged: cost, medium. The Exchange states that corresponding fees will be assessed based on the number of reports a Member selects; the Exchange plans to file a separate rule change proposing the fees for the All Cancels Report. Membership subscription is voluntary.
- Implementation Timing and Immediate Effect: benefit, low. The Exchange indicated it intends to introduce the All Cancels Report on August 25, 2025 (subject to change), and the Commission waived the 30-day operative delay so the proposed rule change is operative upon filing (filed August 5, 2025). The Exchange will announce the implementation date by Excha…

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## Sources
- [2025-15727 on federalregister.gov](https://www.federalregister.gov/documents/2025/08/19/2025-15727/self-regulatory-organizations-cboe-bzx-exchange-inc-notice-of-filing-and-immediate-effectiveness-of)
- [2025-15727 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2025-08-19/pdf/2025-15727.pdf)

## Related
- [Previous: 2025-15726, Certain New Chemicals; Receipt and Status Information for June 2025](https://policyrisk.com/federal-register/2025-15726)
- [Next: 2025-15728, Self-Regulatory Organizations; Cboe BZX Exchange, Inc.; Notice of Designation o…](https://policyrisk.com/federal-register/2025-15728)
- [All Federal Register documents](https://policyrisk.com/federal-register)

Source: PRIA, https://policyrisk.com/federal-register/2025-15727 (as of 2026-06-08).