The S&P 500 was up 0.2% in midday trading to 2,194.74.
The Dow Jones Industrial Average was flat at 19,192.00.
The NASDAQ was up 0.3% to 5,265.42.
The yield on a 10-year Treasury bond fell 2.6% to 2.38%.
The price of gold rose 0.7% to $1,176.
Irvine-based Ingram Micro Inc. was up 3.5% to $38.88 and a $5.8 billion market cap. The Chinese government approved the $6 billion merger of the technology products distributor with shipper Tianjin Tianhai Investment Company, Ltd. in Tianjin, China.
Irvine-based Aerie Pharmaceuticals Inc. was up 5.8% to $38.95 and a $1.3 billion market cap on light volume. RBC Capital Markets said it may initiate coverage on the clinical-stage eye care pharmaceutical company.
Mission Viejo-based CareTrust REIT Inc. was up 3.5% to $14.59 and a $936 million market cap. The senior housing and healthcare facilities owner bought four skilled nursing properties in the Dallas-Fort Worth area.