LessonCase studyFraud and forensicsInvestingRisk
Returns too smooth to be real are themselves the evidence
Madoff: The Monster of Wall Street · 2023
The idea
Madoff's fund reported gains in almost every month for years, with none of the losing stretches a real strategy produces. People who looked at the numbers rather than the reputation saw that the smoothness was impossible, and said so for a decade before anyone acted. The lesson generalises beyond fraud. Any record without variance should raise the question of how it was produced, because real risk shows up as losses from time to time. The absence of losses is not a sign of skill; it is a sign that something is being hidden or smoothed.
A track record with no bad months is a question, not a credential.
When it works
Due diligence on any manager, strategy or product that reports steady positive returns.
When it may fail
Some genuinely low-volatility strategies exist, usually with low returns and a visible mechanism. The test is whether the mechanism explains the smoothness, not the smoothness itself.
How to use it
Before trusting a return series, plot it. Ask for the worst month and the worst year and what caused them. If there is no worst month, ask how the strategy avoids every loss and whether the explanation could be true.
Where it came from
Series Madoff: The Monster of Wall Street · 2023
What the source says. Four episodes on the largest Ponzi scheme in history, and on the decade of people who spotted it from the smoothness of the returns and were ignored.
Connected ideas
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The warning was usually in a footnote, years earlyRead the notes before the numbers; the disclosure that matters is usually there and usually ignored.
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One person's record is a story about survivorship until proven otherwiseAsk how many people ran the same method and are not in the sample before treating a record as evidence of skill.
Concepts
Put it to work on L3VLUP
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