Below is a link to one of the best analyses on Berkshire Hathaway that I have read. Hope you enjoy it as much as I did.
Wedgewood Partners 1st Quarter 2016 Client Letter (http://www.wedgewoodpartners.com/images/wedgewood%20partners%201st%20quarter%202016%20client%20letter.pdf)
There doesn't seem to be any shortage of good analysis this year on Berkshire Hathaway. Below are a few more excellent resources:
1) This analysis by Semper Augustus Investments Group is one of the most detailed and thoughtful that I have ever come across. A true masterpiece.
PARTY LIKE IT'S NINETEEN NINETY-NINE: BAD BREADTH, INTRINSIC VALUE, AND A DEEP DIVE INTO BERKSHIRE HATHAWAY (http://www.semperaugustus.com/2016BRK.aspx)
2) A follow-up interview with Chis Bloomstran of Semper Augustus on his impressive 70 page analysis of Berkshire Hathaway:
Berkshire Believer: Stock's Slide, Change in Buffett Valuation Guide Don't Temper Ardor (http://www.semperaugustus.com/04-01-16-wows-listening-in-berkshire-believer--chris-bloomstranpdf/)
3) A great discussion by Losch Management on the sources and uses of cash & operating earnings at Berkshire.
Operating Earnings (http://www.loschmanagement.com/content/operating-earnings)