The authors present a simple overlapping generations model of an asset market in which irrational noise traders with erroneous stochastic beliefs both affect prices and earn higher expected returns. The unpredictability of noise traders' beliefs creates a risk in the price of…
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Limits to arbitrage · Economics · Arbitrage · Mean reversion · Stock (firearms) · Financial economics · Equity (law) · Capital asset pricing model
# Noise Trader Risk in Financial Markets
> OpenAlex Metadata Hub · https://openalex.org/W2050643653
## Bibliographic
- **DOI:** 10.1086/261703
- **Year:** 1990
- **Citations:** 6394
- **Open Access:** Yes (green)
- **License:** cc-by
- **Source:** http://nrs.harvard.edu/urn-3:HUL.InstRepos:3725552
## Authors
- J. Bradford De Long
- Andrei Shleifer
- Lawrence H. Summers
- Robert Waldmann
## Abstract
The authors present a simple overlapping generations model of an asset market in which irrational noise traders with erroneous stochastic beliefs both affect prices and earn higher expected returns. The unpredictability of noise traders' beliefs creates a risk in the price of the asset that deters rational arbitrageurs from aggressively betting against them. As a result, prices can diverge significantly from fundamental values even in the absence of fundamental risk. Moreover, bearing a disproportionate amount of risk that they themselves create enables noise traders to earn a higher expected return than rational investors do. The model sheds light on a number of financial anomalies. Copyright 1990 by University of Chicago Press.
## Keywords
Limits to arbitrage, Economics, Arbitrage, Mean reversion, Stock (firearms), Financial economics, Equity (law), Capital asset pricing model, Financial market, Volatility (finance), Asset (computer security), Rational expectations, Irrational number, Risk premium, Monetary economics, Econometrics, Finance
## Concepts
- Limits to arbitrage
- Economics
- Arbitrage
- Mean reversion
- Stock (firearms)
- Financial economics
- Equity (law)
- Capital asset pricing model
- Financial market
- Volatility (finance)
- Asset (computer security)
- Rational expectations
- Irrational number
- Risk premium
- Monetary economics
- Econometrics
- Finance
- Geometry
- Mathematics
- Computer science
- Law
- Political science
- Mechanical engineering
- Computer security
- Engineering
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*Metadata only — full text not imported unless Open Access license permits.*
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Tóm lược học thuật (đã diễn giải): The authors present a simple overlapping generations model of an asset market in which irrational noise traders with erroneous stochastic beliefs both affect prices and earn higher expected returns. The unpredictability of noise traders' beliefs creates a risk in the price of the asset that deters rational arbitrageurs from aggressively betting against them. As a result, prices can diverge significantly from fundamental values even in the absence of fundamental risk. Moreover, bearing a disproportionate amount of risk that they themselves create enables noise traders to earn a higher expected return than rational investors do. The model sheds light on a number of financial anomalies. Copyright 1990 by University of Chicago Press.
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1. The authors present a simple overlapping generations model of an asset market in which irrational noise traders with erroneous stochastic beliefs both affect prices and earn higher expected returns.
2. The unpredictability of noise traders' beliefs creates a risk in the price of the asset that deters rational arbitrageurs from aggressively betting against them.
3. As a result, prices can diverge significantly from fundamental values even in the absence of fundamental risk.
4. Moreover, bearing a disproportionate amount of risk that they themselves create enables noise traders to earn a higher expected return than rational investors do.
5. The model sheds light on a number of financial anomalies.
6. Copyright 1990 by University of Chicago Press.
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