The S&P 500 was down 0.4% in midday trading to 2,272.26.

The Dow Jones Industrial Average was down 0.7% to 19,828.82.

The NASDAQ was down 0.4% to 5,589.50.

The yield on a 10-year Treasury bond fell 1.4% to 2.45%.

The price of gold rose 1.4% to $1,212.20.

HEALTHCARE

Quality Systems Inc. in Irvine was up 3.5% to $14.96 and a $930 million market cap on moderate volume. The company makes software for medical practice management.

RETAIL

Irvine-based Tilly’s Inc. was up 11% to $13.20 and a $376 million market cap. The youth fashion apparel chain said same store sales for its recent quarter increased 0.1% year-over-year. It expects overall quarterly operating income to be about $10 million and profit between 21 cents to 22 cents per share. Tilly’s also declared a special dividend of $0.70 per share.