August 5, 2025Technical Notice 25-001

GTE 3 Testing environment availability status September 2 to September 4, 2025

Please be advised that the GTE 3 Testing environment will be temporarily unavailable for certain Approved participants and Software vendors due to the CDCC Business Resilliance test.

Downtime Window:

7:30 pm EDT September 2 to 5 pm EDT September 4 2025

Reason:

CDCC Resilience test

Impact:

During this time, access to the GTE 3 environment will be unavailable for testing purposes, although market feed will be available to all. GTE 1 and GTE 2 environments will continue to operate normally during this period.

If you have any questions or concerns, please contact: derivatives.operations@tmx.com

Capital Formation

Markets

Post-Trade

CDCC
CDS

Insights

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