TMX Group Inc. to announce financial results for Q3 2010 on Wednesday,
October 27, 2010

TORONTO, Oct 7 /CNW/ - TMX Group Inc. will release its financial results for the third quarter 2010 on Wednesday, October 27, 2010.

A conference call to review the results will be held at 8 a.m. (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 16724207.

The audio webcast of the conference call will also be available on TMX Group's website at www.tmx.com, under Investor Relations.

WHAT:	TMX Group Inc. Q3 2010 financial results
WHO:	Tom Kloet, CEO, TMX Group Michael Ptasznik, CFO, TMX Group Paul Malcolmson, Director, Investor and Government Relations, TMX Group
WHEN:	Wednesday, October 27, 2010, 8 a.m. (EDT)
HOW:	Phone numbers for the live call are: 647-427-7450 or 1-888-231-8191 Webcast at: www.tmx.com, under Investor Relations

About TMX Group (TSX-X)

TMX Group's key subsidiaries operate cash and derivative markets for multiple asset classes including equities, fixed income and energy. Toronto Stock Exchange, TSX Venture Exchange, Montreal Exchange, Natural Gas Exchange, Boston Options Exchange (BOX), Shorcan, Equicom and other TMX Group companies provide trading markets, clearing facilities, data products and other services to the global financial community. TMX Group is headquartered in Toronto with offices in Montreal, Calgary and Vancouver.  For more information about TMX Group, visit our website at www.tmx.com.

For further information: