Pretium Resources rallied 21.2 percent to C$14.7 after the company said its Brucejack mine produced 82,203 ounces of gold in the third quarter.

Teck Resources Ltd advanced 1.4 percent to C$28.52. The overall group, which includes miners, fertilizer producers and forestry companies, added 0.6 percent.

By 10:35 a.m. ET (1435 GMT), the Toronto Stock Exchange's S&P/TSX composite index rose 41.96 points, or 0.27 percent, to 15,812.32. It touched its highest level since Feb. 23, at 15,816.82.

Nine of the index's 10 main sectors rose.

Shawcor Ltd rose 8.0 percent to C$29.43 after National Bank of Canada raised its price target and rating to outperform from sector perform, but the overall energy group retreated 0.1 percent with US crude oil prices little changed following Tuesday's 2.7 percent jump.

The influential and heavily-weighted financials group gained 0.1 percent.

Shopify Inc shares recouped some of its recent losses, rising 3.8 percent to C$120.21. The overall technology group gained 0.8 percent.

Bombardier Inc rose 3.8 percent at C$2.34, with the overall industrials group up 0.4 percent. Delta Air Lines chief executive said on Wednesday no US-made jets competed with Bombardier's CSeries plane.

Advancing issues outnumbered declining ones on the TSX by 151 to 89, for a 1.70-to-1 ratio on the upside.