Dow main index slips 0.8%, led by Wal-Mart

Dow Jones Industrial Average index fell on Monday driven by weaker overseas manufacturing activity and Wal Mart bribery scandal. Blue chip index shed 0.78% or 102.09 points and finished at 12,927.17. Wal-Mart Stores tumbled 4.7%, the biggest decline of the Dow's index as company was engaged in investigation in a bribery probe in Mexico. Bank of America followed its European counterparts and plunged 2.2%. On the upside Exxon Mobile posted a modest gain and added 0.5%.