Reminder - FINRA Data Feeds Protocol and Retransmission Changes (TDDS 2.1)

As previously announced, FINRA is introducing changes to the current Trade Data Dissemination Service (TDDS 2.0). protocol and structure.¹ These changes are being made in concert with FINRA’s technical infrastructure upgrade, and TDDS clients must accommodate them by December 5, 2022; as of that date the current TDDS 2.0 version will no longer be supported. FINRA is offering testing for the changes in the test facility (NTF).

TDDS delivers OTC equity securities transaction data from the FINRA Over-the-Counter Reporting Facility (ORF) and 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.  MOLD/UDP 64 is identical to the protocol employed for the Nasdaq UTP data feeds. With the new protocol client retransmission capability to retrieve data packets will be automated via the use of dedicated unicast addresses; this will replace the current manual requests for TDDS data retransmission. FINRA has updated the TDDS 2.1 specification accordingly.

New Ports and Multicast Addresses will be employed for MOLD/UDP 64. FINRA will continue to offer data via Primary A and Primary B groups (NY Metro; Ashburn), 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.

TDDS clients with questions on the MOLD/UDP 64 protocol should contact Trading Services at 212.231.5180.

TDDS clients needing network assistance for setup for any of the above routes should contact [email protected].

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