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The S&P 500 was down 0.4% in midday trading to 2,334.89.

The Dow Jones Industrial Average was down 0.5% to 20,496.22.

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The NASDAQ was down 0.3% to 5,818.53.

The yield on a 10-year Treasury bond fell 2.7% to 2.23%.

The price of gold rose 0.9% to $1,289.


Del Taco Restaurants Inc. was up 3% to $12.62 and a $488 million market cap. Shares have recovered most of their 5% decline from earlier this week after negative comments circulated in stock forums that questioned the fast food chain’s financial reporting.


Biolase Inc. was up 6% to $1.36 and a $92 million market cap. The dental laser maker said it would raise up to $17.6 million from a private placement of convertible preferred shares and warrants with current investors.