The S&P 500 was down 0.7% in midday trading to 2,673.55.
The Dow Jones Industrial Average declined 0.7% to 24,483.21.
The Nasdaq dropped 1% to 7,162.67.
The yield on a 10-year Treasury bond jumped 1.2% to 2.95%.
The price of gold was down 0.7% to $1.339.
Clean Energy Fuels Corp. (Nasdaq: CLNE) in Newport Beach was down 4% to $1.58 and a $240 million market cap on average volume. The natural gas fuel station operator said it will build three facilities in Canada and recently introduced a “$1 a gallon for a year” for certain heavy duty trucks.
Cannabis Science Inc. (OTC: CBIS) in Irvine was up 9% to 6 cents a share and a $156 million market cap. It develops cannabinoid-based drugs to treat various diseases.