TORONTO, Dec 5 (Reuters) - Canada's main stock index ended lower on Tuesday as a string of major bank shares lost ground at the tail end of their earnings season and mining shares also weighed with lower copper and other metal prices.
The Toronto Stock Exchange's S&P/TSX composite index .GSPTSE unofficially closed down 49.60 points, or 0.31 percent, at 15,919.43. Seven of its 10 main sectors ended in the red, with decliners outnumbering advancers by almost 2-to-1.