Toronto stocks fell for a second day Wednesday as lower oil prices weighed on energy shares.

The S&P/TSX composite index gave back 30.63 points, or 0.26%, to 11,966.

The energy sector fell 0.8% as the November contract for light sweet crude on the New York Mercantile Exchange dropped $1.28 to US$57.65 a barrel.

A U.S. government report showed a large increase in U.S. crude oil supplies along with an unexpectedly large drawdown of gasoline and distillate supplies last week.

The Organization of Petroleum Exporting Countries meets Thursday to discuss production quotas.

In Toronto, Suncor Energy Inc. shares lost 67¢ to $83.83.

The mining sector was the leading TSX advancer after British mining giant Rio Tinto announced it will invest up to $1.7 billion in Vancouver-based Ivanhoe Mines to help develop Mongolian copper-gold resources. Ivanhoe shares jumped $2.33, or 31.3%, to $9.76.

The junior S&P/TSX Venture composite index was ahead 17.34 points, or 0.72%, to 2,430.43.

The Canadian dollar rose 0.31 of a cent to US88¢.

In New York, the Dow Jones industrial average closed up 42.66 points, or 0.36%, to 11,992.68 after a brief stint above the 12,000-point mark.

The Nasdaq composite index lost early gains as reports from the tech sector disappointed, losing 7.8 points, or 0.33%, to 2,337.15, while the S&P 500 added 1.91 points, or 0.14%, to 1,365.96.