The S&P 500 was up 0.9% at 3,415.24 during midday trading.
The Dow Jones Industrial Average rose 0.5% to 28,122.43.
The Nasdaq climbed 1.6% to 11,231.95.
The yield on a 10-year Treasury bond rose 1.9% to 0.684%.
The price of gold was flat at $1,963.60.
The price for a barrel of oil rose 2% to $38.01
Irvine-based medical device company Axonics Modulation Technologies Inc. (Nasdaq: AXNX) continued last week’s gains in Tuesday’s midday trading, rising 4.2% to $43.51 per share for a market cap of $1.7 billion. The company reported positive results last week for a two-year clinical trial of its ARTISAN-SNM system, designed to help treat patients suffering from bladder and bowel dysfunction.
Alteryx Inc. (NYSE: AYX), an Irvine-based data analytics software maker, rose 3.9% to $110.19 per share for a market cap of $7.9 billion, as tech stocks continued to recover from last week’s losses.