The S&P 500 rose 0.12% to 1,420 in midday trading Monday.
The Nasdaq was up 0.27% to 2,986, while the Dow Jones Industrial Average was up 0.23% to 13,185.
The yield on a 10-year treasury bond was off 0.25% to 1.62%.
The price of gold was up 0.59% to $1,714 per ounce.
Shares of Seal Beach-based Clean Energy Fuels Corp. were up about 2% to $13 for a market value of $1.2 billion.
Costa Mesa-based Emulex Corp. was up about 5% to $7 for a market value of $594 million.
Shares of Netlist Inc. of Irvine were up about 32% to $1 after the U.S. Patent and Trademark Office rejected claims on a patent being used in a patent infringement lawsuit filed against the company. Netlist had a recent market value of $35 million.
Irvine-based CombiMatrix Corp. continued its surge from Friday, up about 38% to $12 for a market value of $12 million. CombiMatrix shares shot up more than 300% on Friday following studies published in the New England Journal of Medicine that favored a type of testing that is CombiMatrix’s specialty.