Sept 19 (Reuters) - Canada's main stock index opened flat on Wednesday as gains in the healthcare sector, led by cannabis producers, were offset by losses in the energy sector.
* At 9:31 a.m. ET (13:31 GMT), the Toronto Stock Exchange's S&P/TSX composite index .GSPTSE was down 9.86 points, or 0.06 percent, at 16,186.18.