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TMX Group Inc. To Hold Its Annual Meeting And Report Results For Q1 2010 On Wednesday, April 28, 2010

Date 07/04/2010

On Wednesday, April 28, 2010, TMX Group Inc. will hold its Annual and Special Meeting for shareholders in Toronto at the Design Exchange, 234 Bay Street, at 2:00PM EDT.

Journalists may attend the meeting; however, the use of photographic, recording or video equipment will not be permitted during the meeting. There will be a brief media availability following the meeting.

TMX Group will also announce its results for the first quarter 2010. An analyst call to review results will be held to review the results.

Schedule of events for April 28, 2010:

Financial Results: Q1 2010 financial results released
Analyst Call:  8:00AM EDT

Phone numbers for the live call are 647-427-7450 or 1-888-231-8191. An audio replay of the conference call will be available at 416-849-0833 or 1- 800-642-1687, pass code 67665637#.

The audio webcast of the conference call will also be available on TMX Group’s website at www.tmx.com, under Investor Relations
Annual Meeting:  2:00PM EDT
Design Exchange
234 Bay St.
Toronto, Ontario M5K 1B2
Media Availability:  Approximately 3:00PM EDT or immediately following the Annual Meeting.