CANADA STOCKS-Materials, tech shares drag TSX lower
TORONTO, July 27 (Reuters) - Toronto's main stock index turned negative on Tuesday morning as weakness in materials and technology sectors offset strength in financial and energy shares.
The Toronto Stock Exchange's S&P/TSX composite index .GSPTSE fell 0.63 of a point to 11,745.44 before extending losses. (Reporting by Claire Sibonney; editing by Peter Galloway)
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