Wall Street falls at open on Greece talks

US stocks fell at the open on Tuesday as talks to resolve Greece's debt crisis stumbled again and analysts pointed to a short-term top in equity markets after the S&P 500 posted gains in five straight sessions.

The Dow Jones Industrial Average fell 44.05 points, or 0.35%, at 12,664.77. The Standard & Poor's 500 Index lost 4.05 points, or 0.31%, at 1,311.95. The Nasdaq Composite Index dropped 11.88 points, or 0.43%, at 2,772.29.