Warren Buffett, chairman and chief executive of Berkshire Hathaway, celebrated his 92nd birthday by auctioning off a high-tech portrait of himself for charity. AP
Warren Buffett, chairman and chief executive of Berkshire Hathaway, celebrated his 92nd birthday by auctioning off a high-tech portrait of himself for charity. AP

Billionaires: Warren Buffett's portrait auction fails to match $19m lunch bid