• Charlie Munger: „Students learn corporate finance at business schools. They are taught that the whole secret is diversification. But the exact rule is the opposite. The ‘know-nothing’ investor should practice diversification, but it is crazy if you are an expert. The goal of investment is to find situations where it is safe not to diversify. If you only put 20% into the opportunity of a life-time, you are not being rational. Very seldom do we get to buy as much of any good idea as we would like to.“
  • Warren & Charlie: „WB: If we were running only our own money, putting 75% of our net worth in a single position is not a problem if it is something we really have high confidence in. Putting 500% or more of your net worth in a position is a problem. Several times I have had 75% of my non-Berkshire net worth in a situation. You will see things where it would be a mistake not to act. You won’t see them often, and the press and your friends won’t be talking about them. Wouldn’t you say, Charlie? 75% is not a real significant amount?CM: Sometimes, I have had more than 100% in an individual investment.“
  • Warren: „I have 2 views on diversification. If you are a professional and have confidence, then I would advocate lots of concentration. For everyone else, if it’s not your game, participate in total diversification. The economy will do fine over time. Make sure you don’t buy at the wrong price or the wrong time. That’s what most people should do, buy a cheap index fund, and slowly dollar cost average into it. If you try to be just a little bit smart, spending an hour a week investing, you’re liable to be really dumb.“
  • Warren: „The question is about diversification. I have a dual answer to that. If you are not a professional investor. If your goal is not to manage money to earn a significantly better return than the world, then I believe in extreme diversification. I believe 98% – 99% who invest should extensively diversify and not trade, so that leads them to an index fund type of decision with very low costs. All they are going to do is own part of America. And they have made a decision that owning a part of America is worthwhile. I don’t quarrel with that at all. That is the way they should approach it unless they want to bring an intensity to the game to make a decision and start evaluating businesses. Once you are in the businesses of evaluating businesses and you decide that you are going to bring the effort and intensity and time involved to get that job done, then I think diversification is a terrible mistake to any degree. I got asked that question the other day at SunTrust. If you really know businesses, you probably shouldn’t own more than six of them.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. All the people I’ve known that have done well with the exception of Walter Schloss, Walter diversifies a lot. I call him Noah, he has two of everything.“

Risikoavers zu sein ist gut. Für mich bedeutet das, nichts zu kaufen, dessen Wert ich nicht überprüft habe. Im Zweifel kostet das viel Zeit. Macht aber auch Spaß: ich kann jedem nur empfehlen, beispielsweise den 10-K von Cytosorbents zu lesen. Auf schlanken 105 Seiten stehen da spannende Sachen.

Diversifikation ist für mich ein Bekenntnis zu Phlegma und Desinteresse. Nicht weiter schlimm. Ich interessiere mich auch nicht für Hallenhalma oder Lepidopterologie. Aber viel zu reden gibt es mit ETF-Sparern dann halt auch nicht. Und dass gefühlte 80 Prozent der Finanzblogger ETF-Sparen und damit maximales Desinteresse am Thema idealisieren und propagieren, verbuchen wir mal unter „Geschmackssache“.

Meiner ist es nicht.

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