U.S. stocks are edging lower in midday trading as the market pulls back from an all-time high reached last week.
Energy shares were among the biggest decliners Monday as the price of oil fell.
The Dow Jones industrial average slipped 33 points, or 0.2 percent, to 18,105 as of 11:45 a.m. Eastern time.
The Standard & Poor's 500 index lost two points, or 0.1 percent, to 2,108. The Nasdaq composite was flat at 4,955.
The Dow and S&P 500 closed at record highs on Friday.
Homebuilder shares slumped on news that sales of previously occupied homes fell last month.
Boeing fell the most in the Dow, giving up 2 percent to $154.
The price of oil fell $1.32 to $49.49 a barrel in New York.