Latest Updates | CATNMSPLAN

Reference Material
CAT Reporting Technical Specifications for Plan Participants v4.1.0-r21
Event
Monthly CAT Update (May 15, 2025)
Reference Material
SEC Approved CAT NMS Plan as of 7/24/2020
CAT Alert
CAT Alert 2018-002 – Industry Member Technical Specification 1.0
Timeline Activity
Test Environment opens for Intrafirm Linkage validations
Release 2 - Intrafirm Linkage
Reference Material
Q1 2022 QPR
Timeline Activity
CAT Reporter Portal User Guide Published for February Release
Release 1 - File Submission and Data Integrity Validations
Timeline Activity
Last Day for Interim Reporting Obligation 4
Timeline Activity
Production Environment opens for Options 2b Exchange Linkage validations
Release 4 - TRF/Exchange Linkage
Timeline Activity
CAT Reporter Portal User Guide Published for Industry Test Release 1.2 (December 16 functionality)
Release 1 - File Submission and Data Integrity Validations
Reference Material
CAT Billing Presentation- Updated October 2024
Event
Monthly CAT Update (February 20, 2025)
CAT Alert
CAT Alert 2019-01 - Alternative Trading System (“ATS”) Order Type Identifier Registration
Event
CAT Technical Specification Working Group Q&A - 10/24/2019
Timeline Activity
Technical Specifications Published for Equities Phase 2c

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