The S&P 500 was up 0.1% to 2,095.34.
The Dow Jones Industrial Average was up 0.4% to 18,056.85. The Nasdaq was down 0.4% to 4,969.26.
The yield on a 10-year Treasury bond fell 3.5% to 1.87%.
The price of gold fell 0.5% to $1,193.
Newport Beach-based Clean Energy Fuels Corp. was up 10% to $6.60 and a $596 million market cap. The natural gas fueling station operator announced new or extended contracts to supply trucking, transit and trash truck fleets that total about 310 vehicles in several states.
Santa Ana-based Iteris Inc. was up 1.1% to $1.84 and a $60 million market cap. The sensor maker said it had received a patent on technology that helps gauge the impact of weather on crop harvests.