The S&P 500 was down 0.1% in midday trading to 2,439.00.
The Dow Jones Industrial Average was up 0.1% to 21,344.81.
The NASDAQ was flat at 6,220.07.
The yield on a 10-year Treasury bond was down 0.9% to 2.12%.
The price of gold was up 0.7% to $1,277.
Microsemi Corp. was down 1.7% to $48.28 and a $5.6 billion market cap. RBC Capital downgraded shares in the semiconductor maker to “outperform” with a $58 price target.
Endologix Inc. (NASDAQ: ELGX) in Irvine was down 3.8% to $4.74 and a $393 million market cap on moderate volume. The company makes devices to treat abdominal aortic aneurysms.