CANADA STOCKS-TSX ends winning run as Shopify tumbles

TORONTO, Oct 4 (Reuters) - Canada's main stock index edged lower on Wednesday, breaking a five-day winning streak, pressured by a sharp fall in online retail platform Shopify Inc and a decline in energy shares as oil lost ground.

The Toronto Stock Exchange's S&P/TSX composite index unofficially closed down 7.51 points, or 0.05 percent, at 15,721.00. Four of the index's 10 main groups ended lower. (Reporting by Fergal Smith; Editing by James Dalgleish)