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Invest Like the Best · February 19, 2024 · 65m

Annie Duke: How to Quit Well in Investing and Life

Annie Duke

Annie Duke discusses the application of her book Quit to investing with Patrick O'Shaughnessy. She argues that the sunk cost fallacy, escalation of commitment, and identity attachment keep investors in losing positions far longer than rational analysis would suggest.

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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Courage is learnable — Duke argues that the courage to sell losing positions must be built through pre-commitment and deliberate practice, not through willpower in the moment
Duke recommends building quitting courage through pre-commitment: establish sell criteria before buying any investment (the kill criteria), and commit to honoring them regardless of how it feels when the moment arrives.
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Highlights

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The sunk cost fallacy costs investors more money than any other cognitive bias — the refusal to sell a losing position because you've 'invested too much' to quit
Duke presents research showing that sunk cost fallacy is the most expensive cognitive bias in investing: investors hold losing positions 2x longer than winning positions, primarily because selling 'locks in' a loss that feels more painful than the unrealized loss of continuing to hold.
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