The S&P 500 was up 0.9% in midday trading to 2,772.33.
The Dow Jones Industrial Average rose 1.3% to 25,648.00.
The Nasdaq climbed 0.8% to 7,398.61.
The yield on a 10-year Treasury bond fell 0.4% to 2.86%
The price of gold increased 0.2% to $1,333.
Santa Ana’s Universal Electronics Inc. (Nasdaq: UEIC) fell 6.1% to $50.95 and a $729 million market cap. Shares of the world’s largest remote control maker had risen 24% on Feb. 23 after executives on a conference call guided higher annual sales and earnings.
Endologix Inc. (Nasdaq: ELGX) climbed 7.3% to $4.35 and a $363 million market cap. Shares of the Irvine maker of endovascular stent grafts are still down 20% in 2018.