“If you wake up thinking about a position, it’s too big” Steve Clarke
“Make your position size more a function of not how much you can make, but really how much you can lose. So manage your position based on your downward loss perspective not your upward potential.” James Dinan
“We will make something a large position if we think there is an extremely low chance of losing money on a permanent basis. Even if we think it might be a 4X return, if the idea could be a zero, it’ll be a small position” Ken Shubin Stein
“I’ll limit position sizes when potential outcomes are too binary” Chris Mittleman
“We do not bet the ranch on any single investment; few positions have exceeded 5% of assets in recent years” Seth Klarman
“We size things based on how much we think we can make versus how much we think we can lose. We’ll probably be willing to lose 5-6% of our capital in any one investment” Bill Ackman
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“There is one other rule you ought to keep in mind and that is to concentrate, and not only in the Zen sense. Sweet are the uses of diversity, but only if you want to end up in the middle of an average” Adam Smith, the Money Game
1968
“Statistical analysis shows that security-specific risk is adequately diversified after 14 names in different industries, and the incremental benefit of each additional holding is negligible. We own 18-22 companies to allow us to be amply diversified but have the flexibility to overweight a name or own more than one business within an industry.” Mason Hawkins
“Empirical testing has proved beyond a reasonable doubt that the “riskiness” of a portfolio of 12-15 diverse companies is little greater than one loaded with a hundred or more” Frank Martin
“If you can identify six wonderful businesses, that is all the diversification you need. And you will make a lot of money. And I can guarantee that going into a seventh one instead of putting more money into your first one is gotta be a terrible mistake. Very few people have gotten rich on their seventh best idea. But a lot of people have gotten rich with their best idea. So I would say for anyone working with normal capital who really knows the businesses they have gone into, six is plenty, and I probably have half of what I like best. I don‘t diversify personally. ” Warren Buffett
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