The S&P 500 rose 0.21% to 1,617.84 in afternoon trading Monday.
The Dow Jones industrial average was flat at 14,973.65, while the Nasdaq was up 0.39% to 3,391.83.
The yield on a 10-year Treasury bond rose 0.91% to 1.77%.
The price of gold was up 0.21% to $1,467.30 per ounce.
Healthcare software maker Quality Systems Inc. of Irvine was up about 3% to $18.33 for a market value of $1.09 billion. Quality said Monday its subsidiary NextGen Healthcare Information Systems LLC signed a five-year agreement with Physical Rehabilitation Network for the physical therapy clinics operators to use NextGen’s software.
Costa Mesa-based networking equipment maker Emulex Corp. continued its rise from Friday, climbing 2% to $6.23 for a market value of $566.18 million. Emulex shares closed up about 2% on Friday after the company reported better-than-expected third-quarter results on Thursday.
Irvine-based disk drive maker Western Digital Corp. rose about 2% to $58.19 for a market value of $13.86 billion.
Irvine-based homebuilder Standard Pacific Corp.'s shares rose about 3% to $9.25 after closing down about 6% on Friday. Standard Pacific, which had a recent market value of $3.2 billion, reported a rise in its first-quarter net income and revenue on Thursday.