Stocks fell at the open on Monday as concerns over Greece's teetering finances returned to the forefront and after equities suffered their worst quarter since 2008.

The Dow Jones industrial average dropped 46.09 points, or 0.42 percent, to 10,867.29. The Standard & Poor's 500 Index dropped 4.90 points, or 0.43 percent, to 1,126.52. The Nasdaq Composite Index dropped 14.60 points, or 0.60 percent, to 2,400.80.

(Editing by Jeffrey Benkoe)