Self-Regulatory Organizations; Cboe EDGA Exchange, Inc.; Notice of Filing and Immediate Effectiveness of a Proposed Rule Change To Amend Exchange Rule 11.10(d) (“EdgeRisk Self Trade Prevention (“ERSTP”) Modifiers”) To Revise the Definition of Unique Identifier
Published Date: 2/4/2026
Notice
Summary
Cboe EDGA Exchange is updating a rule to change how it defines a 'Unique Identifier' in its EdgeRisk Self Trade Prevention system. This tweak helps traders avoid accidentally trading with themselves by making the system smarter. The change is effective immediately and mainly affects traders using this feature, with no extra costs involved.
Analyzed Economic Effects
3 provisions identified: 2 benefits, 1 costs, 0 mixed.
Broader 'Unique Identifier' for ERSTP
If you are an Exchange 'User' (a Member or Sponsored Participant), the Exchange revised the definition of a 'Unique Identifier' so it may be created at (i) the MPID level, (ii) the firm level (e.g., Exchange Member or trading group), or (iii) where the User indicates ERSTP is necessary to prevent transactions in securities with no change in beneficial ownership. This change is intended to let more Users enable the EdgeRisk Self Trade Prevention (ERSTP) modifier to help avoid self-trades or wash sales.
Attestation Required for New Identifiers
If you request a Unique Identifier under the new item (iii)—that is, to enable ERSTP to prevent transactions where there is no change in beneficial ownership—you must complete an Exchange-provided attestation before the Unique Identifier is created. Users who use MPID-level or firm-level Unique Identifiers will not be required to complete this attestation.
Immediate Effect and Quick Rollout
The Exchange filed the proposed rule change on January 28, 2026 and the Commission waived the 30-day operative delay, making the rule operative upon filing. The Exchange plans to implement the change during the first quarter of 2026 and will announce the exact implementation date by Trade Desk Notice.
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Next: 2026-02219, Self-Regulatory Organizations; Cboe BYX Exchange, Inc.; Notice of Filing and Immediate Effectiveness of a Proposed Rule Change To Amend Exchange Rule 11.9(f) (“Match Trade Prevention (“MTP”) Modifiers) To Revise the Definition of Unique Identifier
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