Latest Updates | CATNMSPLAN

10/07/2025
Event
CAT Technical Specifications Working Group - October 7, 2025
10/06/2025
Technical Specifications
CAIS Data File Schema
09/30/2025
Technical Specifications
CAT Industry Member Technical Specifications (2d) v4.1.0 r10 (Clean)
09/30/2025
Technical Specifications
CAT Industry Member Technical Specifications (2d) v4.1.0 r10 (Redlined)
09/25/2025
FAQ| V. CAT Billing
V20. How will a firm be notified that CAT invoices have been published?
09/25/2025
FAQ| W. Fee Dispute Resolution
W2. How does a CAT Reporter commence the fee dispute resolution process?
09/25/2025
FAQ| V. CAT Billing
V17. How do I access the CAT invoice?
09/25/2025
FAQ| V. CAT Billing
V12. When is the payment due for the monthly CAT invoice?
09/19/2025
Reference Material
SEC Approved CAT NMS Plan as of 9/12/2025
09/19/2025
Technical Specifications
Full CAIS Industry Member Release Rollout
09/18/2025
Event
Monthly CAT Update (September 18, 2025)
09/11/2025
FAQ| K. Options
K15. How must the priceType field be populated on multi-leg events?
09/08/2025
Reference Material
Proposed CAT NMS Plan Amendment Related to Revised Funding Proposal (9/5/2025)
08/28/2025
Reference Material
CAT CAIS Reporter Portal User Guide v2.8.0
08/28/2025
Technical Specifications
CAT Reporting Technical Specifications for Plan Participants Addendum v1.0.0 r3

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