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  • Jelly Beans and the Importance of Independent Thinking

    May 6, 2026

    ·

    Jon

    Have you ever entered a jelly bean contest, where you try to guess the number of jelly beans in a jar? An interesting thing happens when you take the average of all the guesses.

    Jack Treynor did exactly that. He brought a jar of beans (the non-jelly kind) into two classes and asked the students to guess the number of beans inside. So, the students crowded around the jar. They tried to count the beans or estimate the beans per volume or other such things to come up with their best guess. Then they wrote down their guesses and turned them in.

    Treynor found that in both classes the average of the guesses came very close to the actual number of beans. But what really stood out was that the average of the guesses beat all but one or two guesses. In other words, only one or two students actually did better than the average of the whole group.

    This effect is known as the wisdom of crowds, but it requires a key ingredient:

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  • Weekend Reads – 5/1/26

    May 1, 2026

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    Jon

    Quote for the Week

    In the fund industry, the average manager lasts five years, and the average investor owns four funds, so that’s four managers in the first five years, eight managers after ten years, sixteen after twenty years, and fifty-two over the entire sixty-five years. What is the possibility that fifty-two managers, coming and going, cleaning out their portfolios time after time, could with remote conceivability do as well as the index? The return you get from holding the market portfolio over sixty-five years—even a modest return—demonstrates the “miracle of compounding returns,” and the tremendous impact the cost of active management makes is “the tyranny of compounding costs.” The way mathematics works, this tyranny absolutely overwhelms the miracle of compounding returns; to wit, over an investment lifetime the active equity fund investor captures about 20 percent of the return available simply by holding an all-market index fund. — John Bogle (source)

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  • When Investment is Most Businesslike

    April 29, 2026

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    Jon

    Samual Curtis Johnson had an idea. This wasn’t new. He had many ideas throughout life. But at age 53, he gave his idea a try. He started a parquet floor business in 1886.

    Within two years, he had a small but thriving flooring business. He also had a customer base that wanted a better way to take care of their new floors. Soap and water ruined the floor finish and shellacs chipped and were a pain to deal with. His customers wanted something better.

    With a little experimentation and a bathtub, Johnson created a floor wax. He gave it away, as an added service, with every new floor sold. What Johnson had done, though he didn’t know it yet, was diversify his business.

    Soon, people he never sold new floors to, wanted to buy his floor wax. A happy accident turned a parquet floor company into a wax company that sold parquet floors. And another idea sprung from that. What if the wax could be used for things other than floors?

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  • Weekend Reads – 4/24/26

    April 24, 2026

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    Jon

    Quote for the Week

    Volatility matters on only two levels. First, if two portfolios have equal average returns, the portfolio with the lower volatility will earn the higher compound return. On the other hand, investors understand this phenomenon – either intellectually or intuitively – and tend to price volatile securities accordingly. The second consideration in volatility is much more important: when is the owner of the principal of the fund going to disburse that principal? A fund that is tied up in perpetuity could fluctuate all over the place without any consequences whatsoever. It is my impression that too many funds with long horizons are managed as though they were going to be disbursed in the next couple of years, largely because volatility makes people uncomfortable – which is irrelevant to the conditions on which a rational decision should rest. Fear of volatility can be costly to long-run returns and can unnecessarily constrain the freedom of managers to do their best. — Peter Bernstein (source)

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  • Fifty Years of Wall Street with Anecdotiana by Dean Mathey

    April 22, 2026

    ·

    Buy the Book: Print

    Dean Mathey was an investment banker on Wall Street. His autobiography primarily relays his experience and lessons from his start selling bonds in 1912 through the Great Depression.

    Book cover for Fifty Years of Wall Street

    The Notes

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  • Weekend Reads – 4/17/26

    April 17, 2026

    ·

    Jon

    Quote for the Week

    The only thing certain on the fortieth anniversary of the 1929 debacle is that some day, without fail, there will be another such disaster.

    The reason is that the stock market is inherently unstable, the instability being related to its superbly orchestrated ability to attract people with a promise of effortless riches, give them a taste of such gains, give them the promise of a great deal more gain, persuade them that it is rewarding their financial acuity or that of the people who are managing their money, and then, usually, after overcoming some preliminary setbacks, which greatly adds to the general state of confidence, destroy these illusions in one mortal thud. What is necessary for a new disaster is only for the memories of the last one to fade and no one knows how long that takes. — John Kenneth Galbraith (source)

    Continue Reading…

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