September 4, 2025
Equities Notice 2025-029

TMX Group

TMX Equity Trading Notice

Proposed Q4 Amendments - Specification Details

Further to Equities Trading Notice 2025-022, and Specification Details Equities Notice 2025-026. In response to client feedback, and with the MOO changes now available in the GTE environment, TMX intends alongside the MOO changes to implement the Closing Auction Identifier (MOC) to the Binary Feeds as part of the upcoming Q4 enhancements. The specifications are available on our TMX Webstore.

The MOC Trade Identifier amendments are also expected to be implemented in Q4 2025, alongside the MOO amendments (subject to regulatory approval).

Specification Changes Summary:

Specifications Technical Changes Summary
Binary Level 1
v2.9.0
New field:
  • MOC
    • Added to "Trade" message
Binary Level 2
v3.7.0
New field:
  • MOC
    • Added to "Trade Report" and "Trade Correction"


For more information regarding this notice, please contact the Account Management Team.