Latest Updates | CATNMSPLAN

10/22/2026
Newsletter
Monthly CAT Update Newsletter: October 2026
10/21/2026
Technical Specifications
CAT Industry Member Technical Specifications (2d) v4.2.0 r4 (Redlined)
10/21/2026
Technical Specifications
CAT Industry Member Technical Specifications (2d) v4.2.0 r4
10/16/2026
Technical Specifications
CAT Reporting Technical Specifications for Plan Participants v4.5.0
10/13/2026
Technical Specifications
CAT Industry Member Technical Specifications (2d) v4.2.0 r3
10/12/2026
FAQ| A. General
A23. What are the record retention requirements for Industry Member CAT Reporters?
10/12/2026
FAQ| D. Order Receipt
D33. How should the tradingSession field be populated for option orders?
10/06/2026
Event
CAT Technical Specifications Working Group - October 6, 2026
10/06/2026
Technical Specifications
2026 Industry Member Releases (Transaction) - Scope and Schedule
10/02/2026
Reference Material
Self-Reporting Deviations Of Clock Synchronization Standards Form
10/02/2026
Reference Material
Annual Clock Synchronization Certification Form
10/02/2026
Reference Material
IM Reporter Portal User Guide v1.7
09/28/2026
Reference Material
Reference Database Onboarding Guide v1.0 r1
09/24/2026
Newsletter
Monthly CAT Update Newsletter: September 2026
09/23/2026
Technical Specifications
CAT Industry Member Technical Specifications (2d) v4.2.0 r2

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