(REUTERS) -- 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 percent, at 12,664.77. The Standard & Poor's 500 Index  lost 4.05 points, or 0.31 percent, at 1,311.95. The Nasdaq Composite Index dropped 11.88 points, or 0.43 percent, at 2,772.29.

(Reporting By Chuck Mikolajczak; editing by Jeffrey Benkoe)