June 21 (Reuters) - Canada's main stock index edged lower at open on Friday, mirroring losses in global equities as tensions between the United States and Iran kept investors on the sidelines.
* At 9:32 a.m. ET (1332 GMT), the Toronto Stock Exchange's S&P/TSX composite index .GSPTSE was down 25.02 points, or 0.15%, at 16,549.81.