Wall Street ends solid 2016 on dour note

U.S. stocks slumped on the last trading day of the year on Friday, led down by Apple and other big tech stocks, but major indexes still posted solid gains in 2016. In subdued holiday trading, the S&P 500 declined for a third consecutive session. The Dow Jones Industrial Average climbed 13.4 percent for 2016, even as it recorded its first weekly decline since the U.S. election on Nov. 8.