Michael Mauboussin

Michael Mauboussin

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Researcher/author, specializes in capital allocation and valuation frameworks

Most Stocks Lose Money, Yet Market Adds $91T
SocialMar 19, 2026

Most Stocks Lose Money, Yet Market Adds $91T

Self Recommending: "One Hundred Years in the U.S. Stock Markets" by Hendrik Bessembinder. A century of data for nearly 30,000 U.S. public companies. Fun fact: "Shareholders' wealth was enhanced by $91 trillion over the century, but long-term investors in nearly...

By Michael Mauboussin
Historical Base Rates Reveal AI Growth Realities
SocialFeb 10, 2026

Historical Base Rates Reveal AI Growth Realities

We have a new report out today, "Bayes and Base Rates: How History Can Guide Our Assessment of the Future." -We place projected sales growth rates of some artificial intelligence (AI) businesses in the context of history. - We review...

By Michael Mauboussin