Wall St rises at open after worst week of year

The Dow Jones industrial average gained 29 points to 12,399

Wall Street edged higher at the open on Monday, rebounding from its worst weekly decline for the year, on assurances that world powers want debt-laden Greece to remain in the euro zone.

The Dow Jones industrial average gained 29.71 points, or 0.24%, to 12,399.09. The Standard & Poor's 500 Index added 2.73 points, or 0.21%, to 1,297.95. The Nasdaq Composite Index climbed 4.26 points, or 0.15%, to 2,783.05.