The S&P 500 was up 0.2% in midday trading to 2469.52.
The Dow Jones Industrial Average increased 0.1% to 22,028.60.
The NASDAQ rose 0.2% to 6,342.28.
The yield on a 10-year Treasury bond declined 0.9% to 2.25%.
The price of gold climbed 0.3% to $1,283.
Anaheim’s Willdan Group (WLDN) dropped 11% to $32.40 and a $280 million market cap. Volume of 379,000 was three times the daily average for the engineering firm. The shares have more than doubled in the past year.
Costa Mesa’s TTM Technologies Inc. (Nasdaq: TTMI) increased 4.8% to $13.43 and a $1.4 billion market cap. Shares of the printed circuit board maker are still down 31% from their 52-week high in July.