The S&P 500 was up 0.8% in midday trading to 2,663.73.
The Dow Jones Industrial Average rose 1.2% to 24,487.56.
The Nasdaq climbed 0.9% to 7,135.39.
The yield on a 10-year Treasury bond jumped 1.4% to 2.83%.
The price of gold dropped 1.4% to $1,341.
Sunstone Hotel Investors Inc. (NYSE: SHO) in Aliso Viejo was up 4.6% to $15.38 and a $3.5 billion market cap on above-average volume. The REIT owns hotels.
ShiftPixy Inc. (Nasdaq: PIXY) was up 5.8% to $3.82 and a $111 million market cap. Shares are up 30% this week as the provider of short-term shift workers via smartphone app prepares to report results Friday.