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CANADA STOCKS-TSX opens flat as weak weed stocks offset trade optimism boost

Nov 22 (Reuters) - Canada's main stock index was little changed at open on Friday as losses in cannabis stocks countered a broader boost to sentiment from optimistic tones on trade from the United States and China.

* At 9:31 a.m. ET (14:31 GMT), the Toronto Stock Exchange's S&P/TSX composite index was down 2.39 points, or 0.01%, at 16,996.8. (Reporting by Medha Singh in Bengaluru; Editing by Sriraj Kalluvila)