Associated Press
CNBC anchor Carl Quintanilla just tweeted:
Steve Ballmer owns 333 million shares of $MSFT. So his retirement just made him $840 million richer. (via @SPCapitalIQ)
— Carl Quintanilla (@carlquintanilla) August 23, 2013
Ballmer is already a billionaire, making his forture from years working at Microsoft.
Ballmer ranks 51 among the world's billionaires and 22 in the United States.
As of March 2013, Forbes reports his net worth as $15.2 billion.