(REUTERS)--Stocks fell at open on Wednesday, a day after the Dow and S&P 500 hit five-month highs, with pressure on the euro testing the recent view that U.S. equities were decoupling from Europe.

The Dow Jones industrial average was down 52.14 points, or 0.42 percent, at 12,410.33. The Standard & Poor's 500 Index was down 5.30 points, or 0.41 percent, at 1,286.78. The Nasdaq Composite Index was down 7.87 points, or 0.29 percent, at 2,694.63.

(Reporting By Angela Moon; editing by Jeffrey Benkoe)