Concentration
Charlie Munger says this - I have more than skepticism regarding the orthodox view that huge diversification is a must for those wise enough so that indexation is not the logical mode for equity investment. I think the orthodox view is grossly mistaken.
In the United States, a person or institution with almost all wealth invested, long term, in just three fine domestic corporations is securely rich. And why should such an owner care if at any time most other investors are faring somewhat better or worse. And particularly so when he rationally believes, like Berkshire, that his long-term results will be superior by reason of his lower costs, required emphasis on long-term effects, and concentration in his most preferred choices.
I go even further. I think it can be a rational choice, in some situations, for a family or a foundation to remain 90% concentrated in one equity. Indeed, I hope the Mungers follow roughly this course. And I note that the Woodruff foundations have, so far, proven extremely wise to retain an approximately 90% concentration in the founder’s Coca-Cola stock. It would be interesting to calculate just how all American foundations would have fared if they had never sold a share of founder’s stock. Very many, I think, would now be much better off.