The S&P 500 fell 0.33% to 1,555.62 in afternoon trading Monday.
The Dow Jones Industrial Average was off 0.13% to 14,494.72, while the Nasdaq was off 0.22% to 3,241.87.
The yield on a 10-year treasury bond fell 1.90% to 1.96%.
The price of gold rose 0.83% to $1,605.80 per ounce.
Shares of Newport Beach-based patent licensing company Acacia Research Corp. were up about 2% to $28.57 for a market value of $1.4 billion.
Newport Beach specialty chemicals maker American Vanguard Corp. was down about 2.5% to $32.16 for a market value of $915.82 million. Chemical companies were generally down in afternoon trading Monday.