Additional details announced for TSX Quantum(TM) Migration Plan

    TORONTO, Sept. 20 /CNW/ - TSX Group today shared with market participants
additional details about the migration to TSX Quantum(TM), TSX Group's new
proprietary trading engine for Toronto Stock Exchange (TSX).
    It is expected that TSX Quantum will be available for testing in the
TSX's Gateway Testing Environment starting on November 16, 2007. Availability
in the TSX production testing environment is scheduled for late November 2007,
with additional production testing dates being available in early 2008.
    Symbol migration to TSX Quantum will occur on a phased basis, with dates
anticipated as follows:

      -  The first TSX traded symbol (TSX Group Inc. - X) will begin trading
         on TSX Quantum in early December 2007;

      -  The next TSX traded symbol will begin trading on TSX Quantum in mid
         December 2007

      -  An additional 10 symbols will be migrated in late January 2008; and

      -  All remaining TSX symbols will be migrated in two alphabetical
         phases beginning in April 2008.

    David Chmelnitsky, Director, Product Management, TSX Markets, says there
is a commitment to updating participants on details of Quantum. "We are
committed to updating the market frequently to ensure that the migration is as
smooth as possible for market participants. TSX Quantum is designed to provide
participants with unprecedented speed and efficiency for trading and to
position TSX among the best in the world for trading technology."
    Additional information on TSX Quantum is available at

    About TSX Group Inc. (TSX-X)

    TSX Group operates Canada's two national stock exchanges, Toronto Stock
Exchange serving the senior equity market and TSX Venture Exchange serving the
public venture equity market, Natural Gas Exchange (NGX), a leading North
American exchange for the trading and clearing of natural gas and electricity
contracts and Shorcan Brokers Limited, the country's first fixed income
inter-dealer broker. TSX Group also owns The Equicom Group Inc., a leading
provider of investor relations and related corporate communication services in
Canada. TSX Group is headquartered in Toronto and maintains offices in
Montreal, Winnipeg, Calgary and Vancouver.

For further information:

For further information: Steve Kee, Director, Corporate Communications,
TSX Group Inc., Toronto Office, (416) 947-4682, Toll Free 1-888-873-8392,
Cellular (416) 358-3714, Vancouver Office (604) 602-6902, Calgary Office (403)

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