The S&P 500 was up 0.2% in midday trading to 2,430.05.
The Dow Jones Industrial Average increased 0.1% to 21,438.73.
The NASDAQ rose 0.5% to 6,181.27.
The yield on a 10-year Treasury bond was down 0.7% to 2.38%.
The price of gold climbed 0.3% to $1,214.
San Clemente’s Glaukos Corp. (GKOS) declined 4.6% to $40.85 and a $1.4 billion market cap. Shares of the maker of a stent to treat glaucoma have climbed 45% since its 52-week low last August.
Kush Bottles Inc. (KSHB) in Santa Ana increased 3.4% to $2.13 and a $107 million market cap. The shares have climbed 7% since July 6 when the company revealed the results of a company it bought in May. Kush Bottles, which makes packaging and supplies for cannabis products, will report fiscal third-quarter results on July 13.