Toronto Stock Exchange Data Issue

TORONTO, Dec. 12, 2012 /CNW/ - TMX Group advises that it is currently 
experiencing difficulties with its TL1 data feed. Trading on Toronto Stock 
Exchange is unaffected, however data on securities with symbols beginning A-L 
is not being disseminated on the TL1 feed. The S&P index data has been 
affected. All level 2 feeds and binary level 1 feeds are not impacted. 
Technology staff are investigating. Additional updates will be provided. 
About TMX Group (TSX:X) 
TMX Group's key subsidiaries operate cash and derivative markets and 
clearinghouses for multiple asset classes including equities, fixed income and 
energy. Toronto Stock Exchange, TSX Venture Exchange, TMX Select, Alpha Group, 
The Canadian Depository for Securities, Montreal Exchange, Canadian 
Derivatives Clearing Corporation, Natural Gas Exchange, Boston Options 
Exchange, Shorcan, Shorcan Energy Brokers, Equicom and other TMX Group 
companies provide listing markets, trading markets, clearing facilities, 
depository services, 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 (New York, 
Houston, Boston and Chicago) as well as in London, Beijing and Sydney. For 
more information about TMX Group, visit our website at Follow 
TMX Group on Twitter at 
Carolyn Quick Director, Communications and Public Affairs TMX Group 
SOURCE: Toronto Stock Exchange 
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CO: TMX Group Inc.
ST: Ontario
-0- Dec/12/2012 16:22 GMT
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