To the Shareholders of Berkshire Hathaway Inc.:
The per-share book value of both our Class A and Class B stock increased by 13% in 2010. Over the last 46 years (that is, since present management took over), book value has grown from $19 to $95,453, a rate of 20.2% compounded annually.*
The highlight of 2010 was our acquisition of Burlington Northern Santa Fe, a purchase that’s working out even better than I expected. It now appears that owning this railroad will increase Berkshire’s “normal” earning power by nearly 40% pre-tax and by well over 30% after-tax. Making this purchase increased our share count by 6% and used $22 billion of cash. Since we’ve quickly replenished the cash, the economics of this transaction have turned out very well.
A “normal year,” of course, is not something that either Charlie Munger, Vice Chairman of Berkshire and my partner, or I can define with anything like precision. But for the purpose of estimating our current earning power, we are envisioning a year free of a mega-catastrophe in insurance and possessing a general business climate somewhat better than that of 2010 but weaker than that of 2005 or 2006. Using these assumptions, and several others that I will explain in the “Investment” section, I can estimate that the normal earning power of the assets we currently own is about $17 billion pre-tax and $12 billion after-tax, excluding any capital gains or losses. Every day Charlie and I think about how we can build on this base.