Phase 2d

​Last Updated: 1/30/2026

#StatusSummaryPosted DateSpec Publish  DateSpec Version Effective Date - TestEffective Date - Prod
1OpenAdd new 'TXSE' value for the destination, senderIMID and marketCenterID fields to support Texas Stock Exchange.11/11/202511/12/2025 and 2/6/20264.1.0 r12 and r13Industry Test (Portal)- 12/15/2025
and
Industry Test (SFTP)- 3/23/2026

6/29/2026

2Open

Support reporting for combined options (simple and multi-leg) order workflows where there is no systemic link between customer/client orders and representative firm orders.

  • Add representativeInd field value ‘OE’ to MONO and MOOM events.
  • Add representativeInd field value ‘OME’ to MLNO and MLOM events.
  • Add fulfillmentLinkType field values ‘OE’ and ‘OME’ to MOOF and MOFA events.
  • Add fulfillmentLinkType of ‘OME’ to MEOF and MEFA events.
  • Add firmDesignatedID and accountHolderType fields to MOOF and MOFA events.
1/26/20261/30/20264.1.0 r1303/23/20266/1/2026
3NEW-OpenUpdate Section 2.3.2 Order Handling Instructions and Appendix G: Data Dictionary description for handlingInstructions to reflect the Commission’s Exemptive Relief Order (Release No. 34-104664) for port-level settings. 1/30/2026TBD4.1.0 r14N/AN/A

 

Phase 2a/2b

​Last Updated: 01/11/2022

 #StatusSummaryPublish DateSpec Version
  N/A as of 01/11/2022  

 

Phase 2c

​Last Updated: 01/11/2022

#StatusSummaryPublish DateSpec Version
1OpenUpdate section 3.4 to clarify requirements for options prior to Phase 2d outlined in Scenario 3.7.3.N/AN/A
2OpenClarify description of solicitationFlag field to be consistent with new FAQ C8.N/AN/A

 

 

*Planned Technical Specification Updates are subject to approval by the CAT NMS Plan Operating Committee.

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