Abnormal Quote by Alan Greenspan
“This decade is strewn with examples of bright people who thought they built a better mousetrap that could consistently extract abnormal returns from the financial markets. Some succeed for a time. But while there may occasionally be mis-configurations among market prices that allow abnormal returns, they do not persist.”
About This Quote
Source Speech: Interview, 2005, Bloomberg Television
Markets tend to correct any temporary advantage; lasting abnormal returns are rare because competition erodes them.
In simple terms: Short‑term tricks fade as markets adjust.
Key Takeaway
Focus on sustainable strategies, not fleeting tricks.
Themes
finance
competition
efficiency
risk
innovation
Mood
cautious
analytical
realistic
Type
advisory
analytical
cautionary
When to use this quote
- investment management
- hedge fund strategies
- trading algorithm development
- risk assessment
Key Concepts
market efficiency
behavioral finance
alpha decay
Questions to Reflect On
- How can investors create lasting value beyond market inefficiencies?
- What role does competition play in eroding excess returns?
A Different Perspective
Even clever ideas eventually get arbitraged away, limiting long‑term profitability.
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