Buffett's worst year ever

Berkshire Hathaway reported today that its net worth fell in 2008 by $11.5 billion, a decline reducing its per-share book value by 9.6%. That was Berkshire's worst result in the 44 years that Chairman Warren Buffett has run the company and, in fact, only the second decline in that period. The other drop was 6.2% in 2001, a year hurt by 9/11 and other problems in Berkshire's insurance operations.

Buffett states that 2008 had good points mixed in with the bad. But in an unusual admission for the opening pages of the letter (a point easily recognizable by this writer because she has edited Buffett's letter for 32 years) he says bluntly, "During 2008 I did some dumb things in investments."