The S&P 500 was flat in midday trading at 2,434.27.

The Dow Jones Industrial Average was up 0.4% to 21,253.95.

The NASDAQ was down 1.3% to 6,241.70.

The yield on a 10-year Treasury bond flat at 2.21%.

The price of gold fell 0.6% to $1,272.

TECHNOLOGY

Iteris Inc. in Santa was down 4% to $6.21 and a $200 million market cap. It reported a quarterly loss yesterday. Iteris makes software and sensors for data collection, management, and analysis in transportation and agriculture.

HEALTHCARE

Ensign Group Inc. (NASDAQ: ENSG) in Mission Viejo was up 2.4% to $19.80 and a $1 billion market cap. Ensign owns post-acute care facilities and its shares are up about 6% for the week; it bought a skilled nursing facility in Idaho and three in Utah, totaling about 400 beds, on Monday.

RESTAURANTS

El Pollo Loco Holdings Inc. (NASDAQ: LOCO) in Costa Mesa was up 2.2% to $14.21 and a $548 million market cap on moderate volume. The company runs a chain of fast food chicken restaurants.