CANADA STOCKS-TSX edges up to 3-week high, boosted by Rogers

TORONTO, July 20 (Reuters) - Canada's main stock index edged up on Thursday to a three-week high, boosted by a bump in shares of Rogers Communications Inc after it beat earnings expectations, while energy shares lost ground as oil prices fell.

The Toronto Stock Exchange's S&P/TSX composite index unofficially closed up 19.93 points, or 0.13 percent, at 15,264.64. Seven of the index's 10 main groups ended higher. (Reporting by Fergal Smith; Editing by Chris Reese)