Man Institute explores a range of potential “black swan” events that could disrupt global markets, focusing on low-probability, high-impact risks that traditional models tend to underestimate. The paper challenges the idea that diversification alone protects portfolios, highlighting how extreme tail events can dominate long-term outcomes and reshape asset correlations.
Seven Black Swans a Swimming: Tail Events That Could Shape Markets
Man Group
Pierre-Henri Flamand
Research
15 Pages
Key Takeaways
Tail Risks Dominate: A small number of extreme events drive up to 50% of long-term returns, challenging reliance on normal distributions in portfolio construction.
Correlation Breakdown Risk: During crises, cross-asset correlations can spike above 0.8, reducing diversification benefits when investors need them most.
Underpriced Extreme Events: Markets often assign near 0% probability to tail risks that historically occur every 10–20 years, leading to systematic mispricing.
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