The S&P 500 was up 0.2% in midday trading to 2,476.30.
The Dow Jones Industrial Average was up 0.2% to 22,059.63.
The NASDAQ was up 0.2% to 6,353.47.
The yield on a 10-year Treasury bond rose 2% to 2.27%.
The price of gold fell 1% to $1,256.
Ensign Group Inc. (NASDAQ: ENSG) in Mission Viejo was down 7.3% to $20.07 and a $1 billion market cap. The healthcare facility operator beat revenue forecasts in its most recent quarter but missed on earnings projections.
Universal Electronics Inc. (NASDAQ: UEIC) was down 5.9% to $62 and an $895 million market cap. The maker of wireless remote control and audio-visual accessories and software reported a 30% decline in net income in its most recent quarter.
Ducommun Inc. (NYSE: DCO) in Santa Ana was down 8.6% to $27.16 and a $306 million market cap. The aerospace products maker reported a 6% increase in revenue and an 11% decline in operating income in its most recent quarter.
Clean Energy Fuels Corp. (NASDAQ: CLNE) in Newport Beach was down 7.9% to $2.42 and a $365 million market cap. The operator of natural gas fueling stations reported a loss of $17.8 million in its most recent quarter, compared with a profit of $1.5 million in the same period last year.
William Lyon Homes (NYSE: WLH) in Newport Beach was up 3.3% to $23.23 and a $741 million market cap. The home builder and developer reports results Monday before markets open.
El Pollo Loco Holdings Inc. (NASDAQ: LOCO) in Costa Mesa was down 5.5% to $12.28 and a $472 million market cap despite posting higher net income, revenue and same-store sales. Shares had risen 4% this week in the run-up to its earnings report yesterday.
Autobytel Inc. (NASDAQ: ABTL) was down 29% to $7.75 and an $86 million market cap. The automobile leads servicer reported flat revenue and slightly lower net income in its most recent quarter. Its shares have fallen by half in the last 12 months.
Willdan Group Inc. (NASDAQ: WLDN) in Anaheim was down 2% to $32.98 and a $284 million market cap. The engineering services company reported 20% higher revenue and a 3% higher income from operations in its most recent quarter. Its shares are up 40% year-to-date.