Berkshire filed their 13F on 5/14/2009 disclosing stock holdings as of quarter end March 2009.
We maintain a watchlist of Buffett's holding on this site for our members and it was updated to reflect the stock holdings in the recent 13F.
Click the Stock Charts menu item on the top of this page and then click the Buffett's Holdings drop down list as shown below.
Attached to this post are Berkshire's 13F and all the stocks in that report in an Excel spread sheet.
Buffett 13F Report(10.70 kb)
Buffett Holdings Excel Spread Sheet(15.50 kb)