Stock Market Today: Dow extends gain as S&P 500 ekes out finish above 6,000 milestone
Stocks ended higher Monday, with the Dow, S&P 500 and Nasdaq Composite building on last week's record run. The Dow closed above 44,000 for the first time, while the S&P 500 ended just above the 6,000 milestone after temporarily trading above that threshold in Friday's session.