The S&P 500 Index rose 1% to 4,409.54 in midday trading.
The Dow Jones Industrial Average was up 0.6% to 35,036.26 and the Nasdaq jumped 1% to 14,828.12.
Shares in Lake Forest-based Del Taco Restaurants Inc. (Nasdaq: TACO) fell 3.1% to $10.50 and a $386 million market cap after rising about 3% on Thursday following earnings results that beat consensus estimates. Shares are currently trading at nearly half their daily average and are up about 26% in the past year.
Chipotle Mexican Grill Inc. (NYSE: CMG) rose 1.1% to $1,817.87 and a $51 billion market cap. Shares in the Newport Beach-based restaurant chain hit a new stock record of $1,818.49 earlier Thursday, continuing this week’s gains, with shares up 18% in the past week.