September 14, 2026
Ops Notice 2026-037
TMX Operational Notice
General Test Environment (GTE) – Decryption Key Expiry and Rollover
Broadcast Feed (TBF/TRF, CBF/VRF, ABF/ARF) recipients are advised that the current Decryption Keys (DK) in the General Test Environment (GTE) expire at the end of the day on Thursday, October 01, 2026. Next-period DK keys take effect on Friday, October 02, 2026.
Next-period GTE Decryption Keys are now available for approved recipients on the TMX Axis Client Portal during the rollover period.
The rollover in the PRODUCTION environment is still scheduled to expire at the end of the day on Friday, October 16, 2026, and is not impacted by the GTE rollover.
***A future notice will be sent providing details and timelines for the PRODUCTION (PROD) Decryption Key Expiry and Rollover to be held on October 16, 2026***
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