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Black-Scholes works for short-term options, but if it's a long-term option and you think you know something [about the underlying asset], it's insane to use Black-Scholes.

Charlie Munger

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Charlie Munger
Age: 100
Born: 1924
Born: January 1
Business Person
Financier
Investor
Lawyer
Omaha
Nebraska
Charlie Thomas Munger
Charles T. Munger
Charles Thomas Munger
Think
Insane
Thinking
Short
Works
Term
Underlying
Use
Asset
Black
Options
Long
Option
Something
Assets

More quotes by Charlie Munger

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It is an unfortunate fact that great and foolish excess can come into prices of common stocks in the aggregate. They are valued partly like bonds, based on roughly rational projections of use value in producing future cash. But they are also valued partly like Rembrandt paintings, purchased mostly because their prices have gone up, so far.
Charlie Munger
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Remember that reputation and integrity are your most valuable assets - and can be lost in a heartbeat.
Charlie Munger
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We have the same problem as everyone else: It's very hard to predict the future.
Charlie Munger
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You don't have to be brilliant, only a little bit wiser than the other guys, on average, for a long, long, time.
Charlie Munger
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As I continued through Cicero's pages, I found much more material celebrating my way of life.
Charlie Munger
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The number one idea is to view a stock as an ownership of the business and to judge the staying quality of the business in terms of its competitive advantage. Look for more value in terms of discounted future cash-flow than you are paying for. Move only when you have an advantage.
Charlie Munger
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The best thing a human being can do is to help another human being know more.
Charlie Munger
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Sears had layers and layers of people it didn't need. It was very bureaucratic. It was slow to think. And there was an established way of thinking. If you poked your head up with a new thought, the system kind of turned against you. It was everything in the way of a dysfunctional big bureaucracy that you would expect.
Charlie Munger
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One metric catches people. We prefer businesses that drown in cash. An example of a different business is construction equipment. You work hard all year and there is your profit sitting in the yard. We avoid businesses like that. We prefer those that can write us a check at the end of the year.
Charlie Munger
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I have a black belt in chutzpah. I was born with it. Some people, like some of the women I know, have a black belt in spending. They were born with that. But what they gave me was a black belt in chutzpah.
Charlie Munger
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A director who gets $150,000 per year from a company and needs the money is not independent.
Charlie Munger
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Ben Franklin and Samuel Johnson, he credits their wisdom for his success. They were both utterly brilliant men. And powerful communicators. Both have helped me all the way through life. Their lessons are easy to assimilate.
Charlie Munger
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The stupid and dishonest accountants allowed the genie of totally inappropriate accounting to descend on derivatives books. And once this has happened - people get status, etc. - it's impossible to get it back into the bottle.
Charlie Munger
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I've been associated with Warren ( Buffett) so long, I thought I'd be just a footnote.
Charlie Munger
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There are two kinds of businesses: The first earns 12%, and you can take it out at the end of the year. The second earns 12%, but all the excess cash must be reinvested - there's never any cash. It reminds me of the guy who looks at all of his equipment and says, 'There's all of my profit.' We hate that kind of business.
Charlie Munger
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The game of life is the game of everlasting learning. At least it is if you want to win.
Charlie Munger
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Cicero's words also increased my personal satisfaction by supporting my long-standing rejection of a conventional point of view.
Charlie Munger
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There is the sheer amount of Franklin's wisdom. And the talent. Franklin played four instruments. He was the nation's leading scientist and inventor, plus a leading author, statesman, and philanthropist. There has never been anyone like him.
Charlie Munger
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I've heard that one-half of the students at elite schools want to go into private equity or hedge funds. They want to keep up with their age cohorts at Goldman. This can't possibly end well in terms of meeting these expectations.
Charlie Munger
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Warren is one of the best learning machines on this earth. The turtles who outrun the hares are learning machines. If you stop learning in this world, the world rushes right by you.
Charlie Munger