Wall Street stocks opened lower on Wednesday after a sharp market rally in the previous session, as investors' focus again returned to the euro zone's debt problems.

The Dow Jones industrial average shed 25.27 points, or 0.20 percent, at 12,372.11. The Standard & Poor's 500 Index lost 2.65 points, or 0.21 percent, at 1,274.41. The Nasdaq Composite Index fell 8.56 points, or 0.32 percent, at 2,640.16.

(Reporting By Chuck Mikolajczak; editing by Jeffrey Benkoe)