TSX falls on Europe caution, Apple miss
A Bay Street sign is seen in the heart of the financial district in Toronto, August 17, 2009. Reuters

Toronto's main stock index fell at the open on Wednesday as nagging uncertainty about the euro zone debt crisis pushed commodities lower and U.S. tech darling Apple shocked investors with results that missed expectations.

The Toronto Stock Exchange's S&P/TSX composite index .GSPTSE opened down 2.09 points at 12,051.02 and then extended losses.

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