The markets are back up after a two-day closure due to Hurricane Sandy.

The Nasdaq was down 0.61% to 2,970 in midday trading Wednesday, while the Dow Jones Industrial Average was off 0.23% to 13,077.

The S&P 500 fell 0.23% to 1,409.

The yield on a 10-year treasury bond was down 2.86% to 1.7%.

The price of gold rose 0.51% to $1,721 per ounce.

Shares of Newport Beach-based Acacia Research Corp. rose about 5% to $25 for a market value of $1.2 billion. The company said Wednesday it reached a license and settlement agreement with Comcast Cable Communications LLC and hired a new vice president.

Seal Beach-based Clean Energy Fuels Corp. shares fell about 7% to $11 after receiving a downgrade from Piper Jaffray from neutral to underweight. Clean Energy had a recent market value of $972 million.

Santa Ana for-profit education provider Corinthian Colleges Inc. rose about 9% to $2.66, after reporting a swing to profits for the September quarter. Corinthian had a recent market value of $228 million.

Tustin drug developer Peregrine Pharmaceuticals Inc. rose about 18% to $0.83 on preclinical data the company believes supports the potential uses of its lung cancer drug candidate bavituximab. Peregrine had a market value of about $88 million.