Wall Street opens lower as Greece weighs; data eyed

(Reuters) - U.S. stocks opened lower on Tuesday amid investor concerns over the outcome of Greece's negotiations with creditors and ahead of data that could provide clues on the timing of a U.S. rate hike.

The Dow Jones industrial average <.DJI> fell 42.11 points, or 0.23 percent, to 17,998.26, the S&P 500 <.SPX> lost 5.43 points, or 0.26 percent, to 2,106.3 and the Nasdaq Composite <.IXIC> dropped 16.22 points, or 0.32 percent, to 5,066.71.

(Reporting by Narottam Medhora in Bengaluru; Editing by Savio D'Souza)