SEC Extends Timestamp Leniency for Cboe Options Traders Until 2030
Published Date: 6/27/2025
Notice
Summary
Cboe Exchange is updating one of its rules to match a special permission from the SEC that lets them use less detailed timestamps for trades. This change extends the current exemption from April 2025 to April 2030, giving everyone more time to follow the new timing rules. Traders and firms using Cboe Options will feel the impact, but no extra costs or delays are expected.
Analyzed Economic Effects
2 provisions identified: 2 benefits, 0 costs, 0 mixed.
Timestamp Exemption Extended to 2030
If you are an Industry Member that reports trade data to the Consolidated Audit Trail (CAT) for Cboe Options, the exemptive relief that lets you truncate timestamps at the nanosecond level instead of providing finer precision has been extended from April 8, 2025 to April 8, 2030.
Truncate, Don’t Round, Timestamps
Industry Members that capture timestamps more granular than nanoseconds must truncate those timestamps after the nanosecond level (do not round up or down) when submitting data to CAT, and that truncation requirement applies through April 8, 2030.
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