June 14, 2021
Datalinx Notice 2021-004

TMX Group

TMX Product Announcement

Update: Derived Market Close and Derived Last Quote

Further to Product Announcement 2021-002, TMX Datalinx is reminding all Participants that the new message type which publishes the ‘Derived Market Close' and ‘Derived Last Quote' values is currently available in our Gateway Testing Environment (‘GTE') and will be implemented in Production effective June 28th, 2021. Furthermore, the "Derived Market Closing" and "Derived Last Quote" calculation methodology has been changed specifically for corporate securities (non-ETFs) and can be found here.

Updated specifications are available on the TMX Webstore and implementation details can be found as follows:

Services Impacted TL1, CL1, TRD, VRD
New Message Type "R" - Derived Data
GTE Implementation Date (Testing) April 9, 2021
Production Implementation Date June 28, 2021

For more information regarding this notice, please contact the TMX Datalinx Product team:

Dave Hill - Director, Commercial Management - Dave.Hill@TMX.com
Evan Hum - Squad Lead, Equities Trading - Evan.Hum@TMX.com
Emma Moogk - Product Analyst, Subscription Data Services - Emma.Moogk@TMX.com 

Appendix - Derived Price Calculation