The S&P 500 was up 0.04% to 1,771.36 in afternoon trading Monday.
The Dow Jones Industrial Average rose 0.11% to 15,778.80, while the Nasdaq rose 0.07% to 3,920.79.
The yield on a 10-year Treasury bond rose 0.18% to 2.75%.
The price of gold was off 0.26% to $1,281.30 per ounce.
Mission Viejo nursing home operator Ensign Group Inc. shares were off about 3% to $42.45 for a market value of $934.07 million. The company said last week it planned to split itself into two publicly traded companies.
Newport Beach-based William Lyon Homes was trading down about 4% to $21.61 for a market value of $679.35 million. The homebuilder reported third-quarter results before market open Monday with net income that missed analyst estimates.