The S&P 500 fell 0.46% to 1,682.65 in afternoon trading Monday.
The Dow Jones Industrial Average was down 0.55% to 14,989.63, while the Nasdaq was off 0.62% to 3,784.33.
The yield on a 10-year Treasury bond slipped 1.36% to 2.62%.
The price of gold rose 1.18% to $1,325.30 per ounce.
Newport Beach-based Acacia Research Corp. was down about 3% to $21.43 for a market value of $1.07 billion. The patent licensing company is down about 18% so far this year.
Shares of Huntington Beach-based apparel maker and retailer Quiksilver Inc. were down about 3% to $6.93 for a market value of $1.17 billion. Retailers were generally down on Monday.