Canada's main stock index slipped Tuesday as banks pulled back at the end of their earnings season.

The Toronto Stock Exchange's S&P/TSX composite index fell 53.35 points, or 0.33 percent, to end the day at 15,915.68. Seven of its 10 main groups finished lower.

The heavyweight financials group slipped 0.5 percent, with Toronto-Dominion Bank down 1.3 percent to 72.43 Canadian dollars. Bank of Canada slipped 7.9 percent to 56 Candian dollars.

The materials group, which includes precious and base metals miners and fertilizer companies, declined 1 percent as miners of copper, nickel, zinc and other base metals were hit hard by falling commodity prices.

First Quantum Minerals Ltd dropped 4.5 percent to 14.56 Canadian dollars and Teck Resources Ltd lost 2.9 percent to 28.99 Canadian dollars.

Gold miners also fell, with Goldcorp Inc falling 2.2 percent to 15.61 Canadian dollars and Barrick Gold Corp down 0.9 percent to 17.51 Canadian dollars as gold retreated 1 percent to a two-month low.

The energy group was little changed, while Kinder Morgan Canada Ltd fell 2.6 percent to 16.61 Canadian dollars.