Warren Buffett’s annual letter to shareholders was released this past weekend. Like previous letters, it’s filled with several lessons and great reminders for investors. Let’s dive in.
Even the Best Investor Makes Mistakes
The final component in our GAAP figure – that ugly $11 billion write-down – is almost entirely the quantification of a mistake I made in 2016. That year, Berkshire purchased Precision Castparts (“PCC”), and I paid too much for the company. No one misled me in any way – I was simply too optimistic about PCC’s normalized profit potential…
I believe I was right in concluding that PCC would, over time, earn good returns on the net tangible assets deployed in its operations. I was wrong, however, in judging the average amount of future earnings and, consequently, wrong in my calculation of the proper price to pay for the business. PCC is far from my first error of that sort. But it’s a big one.
Every investor loves to tout their winners. Nobody likes to talk about their losers. Well, almost nobody. Continue Reading…

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