TMX Group Inc. To hold Its Annual Meeting And Report Results For Q1 2012 On Friday, May 11, 2012

On Friday, May 11, 2012, TMX Group Inc. will hold its Annual and Special Meeting for shareholders in the TMX Gallery 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 2012. An analyst call will be held to review the results.

Schedule of events for May 11, 2012:

Financial Results:
Q1 2012 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 1-855-859-2056, pass code 71017711#.

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
TMX Gallery
130 King Street West
Toronto, Ontario

Media Availability:
Approximately 3:00PM EDT or immediately following the Annual Meeting.