The S&P; 500 fell 0.5% to 4,459.33 during midday trading.
The Dow Jones Industrial Average dipped 0.5% to 34,653.32 while the Nasdaq decreased 0.4% to 15,100.16.
Crude oil was flat at $72.58 per barrel.
Gold fell 2.2% to $1,756.30 an ounce.
The yield on a 10-year Treasury bond climbed 2.2% to 1.33%.
Irvine-based fitness franchisor Xponential Fitness (NYSE: XPOF) jumped 5% to $12.20 apiece and a $579 million market cap. Shares of the largest boutique fitness franchisor in the U.S. are up 16% since Monday.
Anaheim-based energy consulting and engineering firm Willdan Group Inc. (Nasdaq: WLDN) dropped 4.4% to $32.88 per share and a market cap of $419.3 million. The most valuable company in Anaheim reported Monday an insider sold $70,000 of its stock.