S&P, Nasdaq higher as investors digest Yellen remarks

The Dow, which snapped its seven-day rally on Wednesday, was little changed, weighed down by a fall in Wal-Mart . Yellen said the central bank could raise interest rates "relatively soon" and was prepared to adjust its outlook as the new administration takes shape. U.S. stocks had been on a tear since Trump's surprise victory last week, with the Dow closing at a record level four days in a row.