The S&P 500 was down 0.2% in midday trading to 2,428.79.
The Dow Jones Industrial Average was flat at 21,354.29.
The NASDAQ was down 0.4% to 6,143.91.
The yield on a 10-year Treasury bond fell 0.4% to 2.15%.
The price of gold rose 0.1% to $1,256.
Foundation Building Materials Inc. in Tustin was down 4.2% to $13.41 and a $575 million market cap on moderate volume. The company makes construction products.
Habit Restaurants Inc. (NASDAQ: HABT) in Irvine was down 3.8% to $15.50 and a $504 million market cap on moderate volume. The company runs a chain of fast-casual burger restaurants.