By James Kwak
[I wrote this post a month ago but just realized I never clicked “Publish.” It’s about a book that was published more than two years ago, though, so it shouldn’t have gotten any more stale.]
I recently finished reading Snowball, Alice Schroeder’s 2008 biography of Warren Buffett. It wasn’t a bad read, although at over eight hundred pages it was on the long side and began to seem repetitive; the impression I got was that Buffett had the same kinds of relationships with his family and friends for a long time, and not much changed over the decades.
The big question about Buffett for people like me — people who invest in low-cost index funds, that is — is whether he is smart or lucky. After all, since Burton Malkiel’s Random Walk Down Wall Street, the main argument against stock-picking skill has been that in a coin-flipping tournament featuring thousands of players (and with survivorship bias), someone is bound to win time after time after time.
The answer, at least the one from the book, is that Buffett is smart. And that shouldn’t be too surprising. I recently read a pile of papers about active mutual fund management, mainly from the Journal of Finance, and I’d say that while there’s no consensus per se, the general trend has been that there are some mutual fund managers who can beat the indexes and can more than cover their costs.* There aren’t many of them, they are outnumbered by the ones who do worse than the indexes, and they are probably hard for you and me to find, but they exist. And I say this despite the fact I didn’t want it to be true.
The Baseline Scenario 