The S&P 500 was down 0.2% in midday trading to 2,350.78.
The Dow Jones Industrial Average was flat at 20,570.79.
The NASDAQ was down 0.1% to 5,910.19.
The yield on a 10-year Treasury bond was down 0.9% to 2.22%.
The price of gold rose 0.3% to $1,287.
Peregrine Pharmaceuticals Inc. was up 3.2% to 60 cents and a $179 million market cap on moderate volume. The company is developing pharmaceuticals to treat cancer.
Telehealthcare Inc. in San Clemente was down 7.2% to 45 cents and a $69 million market cap on moderate volume. The company makes software for telemedicine—online communication among patients, families and healthcare workers.