Section 1.1 of the CAT NMS Plan defines “Active Accounts” as “an account that has had activity in Eligible Securities within the last six months.” Section 6.4(d)(iv) of the Plan, as well as the SRO CAT Compliance Rules, requires each Industry Member to “submit an initial set of the Customer information… for Active Accounts to the Central Repository [CAIS] upon the Industry Member’s commencement of reporting to the Central Repository [CAIS].”

This reportable activity includes all customer and proprietary accounts with any CAT-reportable events associated with the Firm Designated IDs (FDID), as well as any proprietary accounts for which the Industry Member utilizes the account number as the FDID. All accounts with any CAT-reportable activity on or after June 12, 2022 must be reported to CAIS with the implementation of Phase 2e (Full CAIS). See CAT Alerts 2022-01 and 2023-01 for the Full CAIS Implementation Schedule.

Also see FAQ Q41 regarding changes to customer and account records after June 12, 2022.