The S&P 500 was up 0.4% to 2,079.31 in midday trading.
The Dow Jones Industrial Average was up 0.7% to 17,987.05, and the Nasdaq was up 0.2% to 4,935.62.
The yield on a 10-year Treasury bond declined 1.4% to 2.21%.
The price of gold rose 0.2% to $1,169.
Irvine-based Habit Restaurants Inc. is up 5% to $34.75 and a $910 million market cap in a run-up to its next quarterly earnings report, scheduled for tomorrow. Consensus is for $44 million in quarterly revenue with a full-year 2015 guidance of $215 million.
Irvine-based Tilly’s Inc. was up 4% to $13 and a $365 million market cap. Comparable retailers’ shares have risen on earnings reports in the last week, and Tilly’s reports earnings for its most recent quarter on March 18.
Aliso Viejo-based New Home Company LLC was down 2.8% to $14.11 and a $233 million market cap on profit-taking after positive quarterly and annual results Friday drove the stock slightly higher. The builder’s 2014 revenue grew 80%, and net income declined 30%.