The S&P 500 fell 0.8% in midday trading to 2,627.00.
The Dow Jones Industrial Average declined 1.4% to 23,830.98.
The Nasdaq dipped 0.2% to 7,049.10.
The yield on a 10-year Treasury bond climbed 0.9% to 2.96%.
The price of gold was 0.9% lower at $1,308.
Edwards Lifesciences Corp. (NYSE: EW) in Irvine was up 2.2% to $130.12 and a $27.4 billion market cap. The heart valve maker said it will speed-up a stock repurchase program and redeem $400 million worth of shares this month.
Alteryx Inc. (NYSE: AYX) in Irvine was up 3.8% to $32.44 and a $2 billion market cap on moderate volume. It makes data analytics software.