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— Charlie Munger"The idea of excessive diversification is madness. Wide diversification, which necessarily includes investment in mediocre businesses, only guarantees ordinary results."
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It can be shown that maximum diversification is achieved by holding each stock in proportion to its value to the entire market (italics added)... Hindsight plays tricks on our minds... often distorts the past and encourages us to play hunches and outguess other investors, who in turn are playing the same game. For most of us, trying to beat the market leads to disastrous results... our actions lead to much lower returns than can be achieved by just staying in the market.
— Jeremy Siegel
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We believe that almost all really good investment records will involve relatively little diversification. The basic idea that it was hard to find good investments and that you wanted to be in good investments, and therefore, you'd just find a few of them that you knew a lot about and concentrate on those seemed to me such an obviously good idea. And indeed, it's proven to be an obviously good idea. Yet 98% of the investing world doesn't follow it. That's been good for us.
— Charlie Munger
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