Buffett's Portfolio Takes Another Hit as Wal-Mart Shares Plunge

  • Berkshire Hathaway owns stake of more than 2% in retailer
  • Munger has lamented not buying Wal-Mart stock sooner

Wal-Mart's Worrisome Stock Chart

Billionaire Warren Buffett’s stock portfolio suffered another setback as Wal-Mart Stores Inc. plunged after predicting profit would decline in its next fiscal year.

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