Stocks opened sharply lower on Monday on weak European data and renewed anxiety over how the region would tackle its debt crisis, while Wal-Mart slumped after a report it stymied a probe into bribery allegations.

The Dow Jones industrial average <.DJI> dropped 145.61 points, or 1.12 percent, to 12,883.65. The Standard & Poor's 500 Index <.SPX> lost 15.53 points, or 1.13 percent, to 1,363.00. The Nasdaq Composite Index <.IXIC> fell 35.20 points, or 1.17 percent, to 2,965.25.

(Reporting By Chuck Mikolajczak; editing by Jeffrey Benkoe)