The S&P 500 was down 0.1% in midday trading to 2,164.93.
The Dow Jones Industrial Average was down 0.3% to 18,423.55.
The NASDAQ was flat at 5,141.05.
The yield on a 10-year Treasury bond was down 1% to 1.5%
The price of gold was up 0.6% to $1,341.
Costa Mesa-based TTM Technologies Inc. was up 11% to $9.43 and a $947 million market cap. The printed circuit board maker reported net income of $18.5 million on net sales of about $602 million in its most recent quarter. Last year in the same period it lost $36.6 million on net sales of about $445 million.
Irvine-based Biolase Inc. was up 11% to $1.22 and a $71 million market cap on above average volume. The dental laser maker is scheduled to report earnings Monday.
Irvine-based Lombard Medical Inc. was down 8% to $1.20 and a $24 million market cap on high volume. The aortic aneurysm stent-graft maker is scheduled to report earnings next week and had traded shares by midday at a rate four times its 90-day average.