TMX Group Makes Investment in the Bermuda Stock Exchange

Toronto, Canada & Hamilton, Bermuda – 21 December, 2011 – TMX Group Inc. (TMX Group) and Bermuda Stock Exchange (BSX) today announced that TMX Group has purchased a 16% minority stake in the BSX.  TMX Group is now one of the largest shareholders of the BSX, and Tom Kloet, CEO, TMX Group, will be joining the BSX board of directors.

To celebrate, Greg Wojciechowski, President and CEO, BSX, will join Mr. Kloet to open trading on Toronto Stock Exchange this morning at 9:30 a.m. EST.

The announcement comes at a time of increased business activity between Bermuda and Canada.  Most notably, a Tax Information Exchange Agreement was signed between the two countries earlier this year, effective July 1, 2011.  In addition, the BSX gained recognition as a Designated Stock Exchange under Canada’s Income Tax Act, effective October 31, 2011.

”This investment represents TMX Group’s commitment to looking beyond Canada for opportunities,” Mr. Kloet said.  “BSX and TMX Group both have a culture of continually striving to innovate and offer our clients enhanced products and excellent customer service.  I am certain we will be well aligned as we consider future initiatives together.” 

Mr. Wojciechowski added: “I’m delighted to welcome TMX Group as a BSX shareholder and Tom Kloet to our board of directors.  Canada and Bermuda share a long history and important jurisdictional ties, this strategic investment can only strengthen this long standing relationship. We look forward to exploring new avenues of economic development and mutually beneficial cooperation in our domestic and international capital markets.”

For Market Openings: Media may pick up a feed from the TOC (television operations centre) for all market open ceremonies. The feed is named TSX Transmit 2 and is produced at the TMX Broadcast Centre and sent live to the TOC. Those featured in the market opening move into position for the market open ceremony at approximately 9:27 a.m. and the markets will open with the sound of a siren (the traditional market open on Toronto Stock Exchange) at 9:30 a.m.

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, TMX Select, Montreal Exchange, Canadian Derivatives Clearing Corporation, Natural Gas Exchange, Boston Options Exchange (BOX), Shorcan, Shorcan Energy Brokers, Equicom and other TMX Group companies provide listing markets, trading markets, clearing facilities, data products and other services to the global financial community. TMX Group is headquartered in Toronto and operates offices across Canada (Montreal, Calgary and Vancouver), in key U.S. markets (Houston, Boston and Chicago) as well as in London and Beijing. For more information about TMX Group, visit our website at www.tmx.com.

About the BSX:

Established in 1971 the Bermuda Stock Exchange (BSX) is now the leading fully electronic offshore securities market. The BSX specializes in listing and trading of capital market instruments such as equities, debt issues, funds, hedge funds, derivative warrants and Insurance Linked Securities.

The BSX, recognised by the US SEC as a Designated Offshore Securities Market, is a member of the World Federation of Exchanges and is located in an O.E.C.D. member nation. The BSX has Approved Stock Exchange status under Australia’s Foreign Investment Fund (FIF) taxation rules; Designated Investment Exchange status by the UK’s Financial Services Authority; Recognised Stock Exchange by the UK HM Revenue and Customs; Designated Exchange status under Canada’s Income Tax Act and is a member of America’s Central Securities Depository Association.

For more information please contact:

Catherine Kee

Manager, Corporate Communications

TMX Group

416-814-8834

catherine.kee@tmx.com

BSX Media Contact

Victor Webb

Marston Webb

212-684-6601

marwebint@cs.com