The S&P 500 fell 0.05% to 1,472 in midday trading Wednesday.
The Dow Jones Industrial Average was off 0.25% to 13,501, while the Nasdaq was up 0.16% to 3,116.
The yield on a 10-year treasury bond was down 0.60% to 1.82%.
The price of gold fell 0.17% to $1,681 per ounce.
Huntington Beach-based BJ's Restaurants Inc. fell about 2% to $33, with restaurant operators generally down in afternoon trading Wednesday. BJ’s had a recent market value of $934 million.
Shares of Santa Ana-based CoreLogic Inc. rose about 3% to $28, after closing up about 3% on Tuesday. CoreLogic had a recent market value of $2.7 billion.
Aliso Viejo-based networking-equipment maker QLogic Corp. was up about 2% to $11 for a market value of $1 billion. QLogic closed down about 3% on Tuesday, after the company said it expects revenue and earnings per share for the December quarter to be higher than previous guidance.
Shares of Newport Beach-based Acacia Research Corp. were down about 2% to $26 for a market value of $1.3 billion.