Wall St. dips at open as U.S.-North Korea summit ends early

Wall Street’s main indexes opened slightly lower on Thursday after a U.S.-North Korea summit ended abruptly without a deal, but losses were limited as data showed the American economy slowed less than expected in the fourth quarter. The S&P 500 opened lower by 4.27 points, or 0.15 percent, at 2,788.11. The Nasdaq Composite dropped 21.19 points, or 0.28 percent, to 7,533.31 at the opening bell.