Skip to main content
Content type
Announcement
CAT Alert
Event
FAQ
other
Reference Material
Timeline Activity
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
X. Reference Database
All Topics
Year
- Any -
2026
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
2012
Technical Specifications
Industry Member Specifications
Industry Member Reporting Scenarios
Participant Specifications
Gap Analysis
Reference Data
Communication
Events
Announcements
CAT Alerts
Newsletters
Plan Participant Contact List
Guidance
FAQs
Registration & Onboarding
Topics
Clock Synchronization
Event Materials
Forms
CAT Alerts
Transaction Compliance Glossary
Video Tutorials
Timeline
About
CAT NMS Plan
Exemptive Request Letters
Implementation Plan
One-time Written Assessments
Audited Financial Statements
Plan Participants
CAT Financial and Operating Budget
CAT Fees
Billing Trade Details Technical Specifications
CAT Billing Scenarios
Billing Trade Summaries
CAT Fee Alerts
CAT Billing Alerts
CAT Billing FAQs
Funding Model Approval Order
CAT Billing Webinars
CAT Fee Disputes
Reporter Portal
Access Information
Content type
Announcement
CAT Alert
Event
FAQ
other
Reference Material
Timeline Activity
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
X. Reference Database
All Topics
Year
- Any -
2026
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
2012
Topics
Home
Filters
Show Results
Subscribe
All Topics
Below is a summary of all available content.
Displaying 1 - 10 of 1641 results
Filter by Content Type
CAT Alert
Announcement
Event
FAQ
Reference Material
Timeline Activity
Filter by Topic
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
X. Reference Database
Sort by
Core Official Date
Order
Sort by Oldest First
Sort by Newest First
09/24/2026
Newsletter
Monthly CAT Update Newsletter: September 2026
Monthly CAT Update (September 24, 2026) - Newsletter
Topics
A. General
B. Reporting Requirements
V. CAT Billing
X. Reference Database
09/23/2026
CAT Alert
CAT Alert 2026-02 - 23x5 Trading: CAT Reporting Requirements
Topics
B. Reporting Requirements
09/23/2026
Technical Specifications
CAT Industry Member Technical Specifications (2d) v4.2.0 r2 (Clean)
09/23/2026
Technical Specifications
CAT Industry Member Technical Specifications (2d) v4.2.0 r2 (Redlined)
09/23/2026
FAQ
E28.
Exchange origin code may be reported on CAT order route and route modified events when routing orders to an options exchange. However, the value is not required by all options exchange protocols for certain market maker orders. In these cases, with what should Industry Members populate the exchOriginCode field on applicable events?
Topics
E. Order Routing and Execution
09/23/2026
FAQ
D13.
An Industry Member receives an order with instructions to execute the order on a net basis. No specific instruction is given with respect to which trading session the order is eligible to be executed. The Industry Member accumulates shares during regular market hours but does not execute the customer order until after the close at a net price which is reported to the tape. What should be populated in the tradingSession field on the New Order or Order Accepted Event?
Topics
D. Order Receipt
09/17/2026
Reference Material
SEC Approved CAT NMS Plan as of 9/3/2026
09/17/2026
Technical Specifications
CAT Reporting Technical Specifications for Plan Participants v4.4.0
09/16/2026
Reference Material
FINRA CAT Connectivity Supplement for Industry Members v1.20
Topics
A. General
09/02/2026
Reference Material
SEC Notice of Request for Exemption Related to Period 4 of the Financial Accountability Milestones
Pagination
1
2
3
4
5
6
7
8
9
…
›
Next ›
»
Last »