The S&P 500 was up 0.1% in midday trading to 2,497.45.

The Dow Jones Industrial Average was up 0.2% to 22,250.78.

The NASDAQ was up 0.3% to 6,447.36.

The yield on a 10-year Treasury bond was up 0.2% to 2.20%.

The price of gold was down 0.3% to $1,325.

HEALTHCARE

Glaukos Corp. (NYSE: GKOS) in San Clemente was down 5.9% to $31.75 and a $1.1 billion market cap. The eye stent maker’s shares have fallen 23% in the last two trading sessions after it adjusted revenue expectations in advance of an investor meeting today.

TECHNOLOGY

Iteris Inc. (NASDAQ: ITI) in Santa Ana was down 4.1% to $6.04 and a $197 million market cap on above-average volume. The company makes software to track and manage traffic, agriculture and weather.