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Deep Dive with Ali Abdaal · April 15, 2024 · 58m

Howard Marks: The Art of Thinking About Risk

Howard Marks

Howard Marks joins Ali Abdaal to discuss risk thinking — not just in investing but in life. He argues that most people think about risk wrong: they focus on the probability of bad outcomes instead of the magnitude, and they confuse risk (probability of loss) with volatility (fluctuation).

Canon

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Stoic dichotomy of control — Marks argues that risk management is fundamentally a Stoic practice: accept that bad outcomes will occur (outside your control) and focus on surviving them (inside your control)
Marks frames risk management as Stoic philosophy: you cannot prevent recessions, pandemics, wars, or market crashes. You can ensure your portfolio survives them. The Stoic investor doesn't try to predict crises — they build portfolios that endure crises.
ClaudeChatGPTGemini

Highlights

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Risk is about the magnitude of potential loss, not just the probability — a 1% chance of total ruin is more dangerous than a 50% chance of a 10% loss
Marks argues that most people evaluate risk by probability alone (how likely is it?). The more important question is magnitude: what happens if the worst case occurs? A 1% chance of bankruptcy is far more dangerous than a 50% chance of a bad quarter.
ClaudeChatGPTGemini