Toronto Stock Exchange and TSX Venture Exchange are being halted due to technical issues

December 17, 2008

December 17, 2008 (TORONTO) – Toronto Stock Exchange and TSX Venture Exchange are being halted due to technical issues. Updates will be provided.

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.tsx.com.

For more information please contact:
Carolyn Quick
Director, Corporate Communications
TMX Group
416-947-4597
carolyn.quick@tsx.com