Hot Cut Reminder - TDDS Changes

On December 5, 2022, FINRA is introducing changes to the current Trade Data Dissemination Service (TDDS 2.0) protocol and structure. As of December 5, 2022, the current TDDS 2.0 version will no longer be supported as this will be a hot cut change, and only TDDS 2.1 will broadcast FINRA Over-the-Counter Reporting Facility (ORF) data.

TDDS 2.1 will be the first FINRA data product to use the MOLD/UDP 64 transmission protocol as the communications interface for the data feed. With the new protocol client retransmission capability to retrieve data packets will be automated via the use of dedicated unicast addresses. New Ports and Multicast Addresses will be employed for MOLD/UDP 64. Starting December 5th FINRA will offer data via Primary A and Primary B groups (NY Metro; Ashburn) for TDDS 2.1, and clients are encouraged to process both groups. In addition, FINRA has employed Disaster Recovery groups to be utilized in the event of catastrophic failure encountered at the data centers. FINRA encourages TDDS clients to also be prepared to process the Disaster Recovery groups.

Please contact FINRA Product Management or call (866) 899-2107 with questions regarding this notice.