The S&P 500 rose 0.6% in midday trading to 2,354.90.
The Dow Jones Industrial Average increased 0.6% to 20,672.06.
The NASDAQ was up 0.5% to 5,868.01.
The yield on a 10-year Treasury bond rose 1% to 2.40%.
The price of gold fell 0.2% to $1,254.
CryoPort Inc. of Irvine fell 45% to $2.08 and a $37 million market cap. The life sciences company priced an offering of 5.5 million common shares at $2 a share, 47% below Monday’s closing price of $3.75. Cryoport had by midday traded 4.2 million shares compared to a daily average of 22,000.
Lantronix Inc. of Irvine climbed 8% to $3.32 and a $58 million market cap. Shares in the maker of data networking products maker have doubled year-to-date and more than tripled in the last 12 months.