The S&P 500 was down 0.1% in midday trading to 2,369.96.
The Dow Jones Industrial Average was down 0.2% to 20,865.45.
The NASDAQ was up 0.1% to 5,866.71.
The yield on a 10-year Treasury bond rose 0.9% to 2.61%.
The price of gold rose 0.2% to $1,203.
Del Taco Restaurants Inc. in Lake Forest dropped 4.7% to $12 and a $455 million market cap after reporting fourth-quarter profit that missed analysts’ estimates.
Willdan Group Inc. in Anaheim climbed 7% to $35.63 and a $297 million market cap in a second day of price increases. The engineering consultant has climbed 28% since March 9 when it reported higher quarterly and annual revenue and net income.
Auxilio Inc. in Mission Viejo was up 9.2% and a $42 million market cap on volume 16 times its daily average. The IT security services firm is scheduled to present this week at the Roth Conference for investors in Dana Point; its share price has more than doubled year-to-date.