Thanks for the downvote but see this for example:
http://www.wallstreetmanna.com/2009/11/warren-buffett-loves-...
or this:
http://truthingold.blogspot.com/2011/08/think-buffet-investm...
http://www.wallstreetmanna.com/2009/11/warren-buffett-loves-...
or this:
http://truthingold.blogspot.com/2011/08/think-buffet-investm...
Not sure about 2009, but look here, they carry $30 billion in cash assets:
http://finance.yahoo.com/q/bs?s=BRK-A+Balance+Sheet&annual
It is hard to say how much of his success is due to his skill and how much of it is survivor bias (with him being the lucky lucky survivor). It's a neat issue.