Wall St ends mixed

U.S. stocks began week with Dow and S&P 500 extending losses after posting their worst week since June.
Dow Jones Industrial Average fell 5.83 points to close at 15,419.68, a one-month low.
S&P 500 dropped 1.95 points to 1,689.47. Among key S&P sectors, utilities led the decliners, while technology shares gained.
Nasdaq composite gained 9.84 points at 3,669.95.