Stocks rose at the open on Wednesday after three days of losses on hopes the European debt crisis might ease after Germany's top court smoothed the way for Berlin's participation in bailout packages.

The Dow Jones industrial average <.DJI> gained 131.31 points, or 1.18 percent, to 11,270.61. The Standard & Poor's 500 Index <.SPX> added 15.93 points, or 1.37 percent, to 1,181.17. The Nasdaq Composite Index <.IXIC> rose 37.30 points, or 1.51 percent, to 2,511.13.