Wall Street stocks opened higher on Monday on hopes euro zone policymakers were putting together new measures to help ease the region's debt crisis, but little clarity on their potential effectiveness could keep markets volatile.

The Dow Jones industrial average <.DJI> gained 1.89 points, or 0.02 percent, to 10,773.37. The Standard & Poor's 500 Index <.SPX> rose 8.33 points, or 0.73 percent, to 1,144.76. The Nasdaq Composite Index <.IXIC> added 8.18 points, or 0.33 percent, to 2,491.41.

(Reporting by Chuck Mikolajczak)