The Dow Jones industrial average rose eight points to close at 16,073 Monday. The Standard & Poor's 500 index eased two points to 1,802. The Nasdaq rose three points to 3,995.
DaVita HealthCare Partners rose the most in the S&P 500 index. The dialysis services provider said that Medicare reimbursement rates won't be as bad as expected next year. The stock rose $5.01, or 9 per cent, to $61.55.
World powers and Iran reached a deal Sunday to curtail that country's nuclear ambitions. One impact could be increased oil supplies.
Traders anticipated more supply and lower oil prices, making the energy sector the biggest decliner in the S&P 500.