The S&P 500 rose 0.10% to 1,681.89 in afternoon trading Monday.
The Dow Jones industrial average was up 0.10% to 15,479.74, while the Nasdaq was up 0.15% to 3,605.62.
The yield on a 10-year Treasury bond was off 1.88% to 2.55%.
The price of gold rose 0.49% to $1,283.80 per ounce.
Irvine medical device maker Endologix Inc. rose about 2% to $15.32 for a market value of nearly $962.1 million. Stifel initiated coverage of the company with a "buy" rating.
Aliso Viejo networking equipment maker QLogic Corp. shares were off about 3% to $10.64, after Morgan Stanley lowered its rating on the company’s stock from “equal weight” to “underweight.” QLogic had a recent market value of about $947.4 million.