The S&P 500 climbed 0.5% in midday trading to 2,927.63.
The Dow Jones Industrial Average jumped 0.8% to 26,670.94.
The Nasdaq increased 0.2% to 8,060.79.
The yield on a 10-year Treasury bond was 0.6% higher to 3.07%.
The price of gold fell 0.3% to $1,193.
Boot Barn Holdings Inc. (NYSE: BOOT) in Irvine was up 3.1% to $29.28 and an $820 million market cap. Shares of the retailer have jumped five-fold since May , 2017.
Glaukos Corp. (NYSE: GKOS) in San Clemente fell 3.3% to $62.75 and a $2.2 billion market cap. Shares are still up about 56% in the past six weeks after rival Novartis said it will withdraw a competing product from the market “due to a lack of efficacy.” Glaukos makes a line of stents to treat glaucoma.