The S&P 500 was 0.3% higher in midday trading to 2,715.33.
The Dow Jones Industrial Average rose 0.2% to 25,100.83.
The Nasdaq climbed 0.9% to 7,328.60.
The yield on a 10-year Treasury bond jumped 1.3% to 2.73%.
The price of gold dropped 0.3% to $1,319.
The price of oil fell 1.7% to $54.35 a barrel.
Glaukos Corp. (NYSE: GKOS) was up 2.6% to $66.35 and a $2.4 billion market cap. Shares in the San Clemente-based glaucoma treatment device maker are up about 23% in the past month.
CorVel Corp. (Nasdaq: CRVL) in Irvine rose 2.6% to $64.34 and a $1.3 billion market cap. The workers compensation risk management provider reports results tomorrow.