2025-17597Notice

NYSE Arca Syncs Timestamps to 2030—Bureaucratic Sync-Up Alert

Published Date: 9/12/2025

Notice

Summary

NYSE Arca is updating a rule about how it tracks trade times to match a new exemption that extends the deadline from 2025 to 2030. This change affects traders and firms using the Consolidated Audit Trail system, giving them more time before stricter timestamp rules kick in. The update is effective immediately and won’t cost anyone extra right now.

Analyzed Economic Effects

1 provisions identified: 1 benefits, 0 costs, 0 mixed.

CAT Timestamp Exemption Extended to 2030

If you are an Industry Member or trading firm that reports data to the Consolidated Audit Trail (CAT), the Exchange updated Rule 11.6860 to extend the exemption that requires truncating timestamps after the nanosecond level (instead of rounding) from April 8, 2025 to April 8, 2030. The rule change is effective upon filing.

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Key Dates

Effective Date
Published Date
8/27/2025
9/12/2025

Department and Agencies

Department
Independent Agency
Agency
Securities and Exchange Commission
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