The S&P 500 was up 0.1% in midday trading to 2,368.63.
The Dow Jones Industrial Average was flat at 20,825.36.
The NASDAQ was up 0.1% to 5,850.47.
The yield on a 10-year Treasury bond rose 1.8% to 2.36%.
The price of gold rose 0.1% to $1,260.
Willdan Group Inc. in Anaheim was up 6% to $29.25 and a $244 million market cap on moderate volume. The engineering services firm is set to report quarterly numbers March 9; its share price has more than tripled in the last year.
CombiMatrix Corp. is up 5% to $4.60 and a $12 million market cap. Shares in the diagnostic test developer are up about 25% since last week’s positively received quarterly report.