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Motley Fool Money · August 5, 2024 · 34m
Annie Duke: When to Quit a Stock (or Anything Else)
Decision scientist Annie Duke discusses her book Quit and applies the framework to investing. She argues that the sunk cost fallacy keeps investors holding losers too long, and that learning to quit at the right time is more valuable than learning to persevere.
This summary was generated from show notes and public descriptions, not from a full transcript review. Details may contain inaccuracies.
Canon
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Duke presents quitting as a courage problem: investors know they should sell losers but can't bring themselves to do it. She argues this courage can be built through systematic pre-commitment (setting kill criteria before buying) and deliberate practice.
Highlights
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The sunk cost fallacy makes investors hold losing stocks because selling 'locks in' the loss — but the loss already happened; selling just acknowledges it
Duke explains that selling a losing stock doesn't create the loss — the loss occurred when the price dropped. Selling merely acknowledges reality. Holding is itself a decision to invest at today's price, and should be evaluated that way.Was this useful?