Latest Updates | CATNMSPLAN

01/30/2026
Technical Specifications
CAT Industry Member Technical Specifications (2d) v4.1.0 r13 (Clean)
01/30/2026
FAQ| F. Representative Orders
F5. Are Industry Members required to link a Representative Order with the underlying order(s) for the Representative Order?
01/30/2026
FAQ| F. Representative Orders
F7. What is the difference between order level linkage and fulfillment level linkage on a representative order?
01/30/2026
FAQ| F. Representative Orders
F6. Are there any exceptions to the requirement to link Representative Orders with the underlying order(s)?
01/30/2026
Technical Specifications
CAT Industry Member Technical Specifications (2d) v4.1.0 r13 (Redlined)
01/29/2026
Reference Material
SEC Order Granting Exemptive Relief Regarding Port-Level Settings
01/29/2026
Reference Material
SEC Order Granting Exemptive Relief Regarding Representative Orders
01/29/2026
Reference Material
SEC Order Granting Exemptive Relief Regarding Reporting of Responses to Requests for Quotes and Other Solicitation Responses Provided in a Standard Electronic Format
01/28/2026
Technical Specifications
2026 Industry Member Releases (Transaction) - Scope and Schedule
01/22/2026
Event
Monthly CAT Update (January 22, 2026)
01/20/2026
Event
Monthly CAT Update (February 19, 2026)
01/16/2026
Reference Material
SEC Approved CAT NMS Plan as of 1/13/2026
01/15/2026
Reference Material
CAT NMS Plan as of 11/29/2025
01/14/2026
Reference Material
CAT LLC Response to Comments – Funding Proposal
01/13/2026
Reference Material
SEC Order Approving Proposed CAIS Amendment

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A. General
B. Reporting Requirements
C. Definitions
D. Order Receipt
E. Order Routing and Execution
F. Representative Orders
G. Manual Orders
H. ATS
I. Foreign Securities
J. OTC Equity Securities
K. Options
L. Equity Floor Brokers
M. Firm Designated ID
N. Third Party Reporting
O. Technical Requirements
P. Feedback and Error Correction
Q. Customer and Account Information
R. Clock Synchronization
S. Security
T. Production Readiness Testing
U. Allocations
V. CAT Billing
W. Fee Dispute Resolution
All Topics

A. General
B. Reporting Requirements
C. Definitions
D. Order Receipt
E. Order Routing and Execution
F. Representative Orders
G. Manual Orders
H. ATS
I. Foreign Securities
J. OTC Equity Securities
K. Options
L. Equity Floor Brokers
M. Firm Designated ID
N. Third Party Reporting
O. Technical Requirements
P. Feedback and Error Correction
Q. Customer and Account Information
R. Clock Synchronization
S. Security
T. Production Readiness Testing
U. Allocations
V. CAT Billing
W. Fee Dispute Resolution
All Topics