Oct 10 (Reuters) - Canada's main stock index opened lower on Wednesday in broad-based declines weighed down by ongoing concerns of a slowing global economy.
* At 9:31 a.m. ET (13:31 GMT), the Toronto Stock Exchange's S&P/TSX composite index .GSPTSE was down 33.23 points, or 0.21 percent, at 15,820.82.