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Heterogeneity of Investors and Asset Pricing in a Risk-Value World
Franke, Günter; Weber, Martin - C.E.P.R. Discussion Papers - 2003
Portfolio choice and the implied asset pricing are usually derived assuming maximization of expected utility. In this Paper, they are derived from risk-value models that generalize the Markowitz-model. We use a behaviourally based risk measure with an endogenous or exogenous benchmark. If the...
Persistent link: https://www.econbiz.de/10005136483
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Portfolio Selection with Parameter and Model Uncertainty: A Multi-Prior Approach
Garlappi, Lorenzo; Uppal, Raman; Wang, Tan - C.E.P.R. Discussion Papers - 2005
In this paper, we show how an investor can incorporate uncertainty about expected returns when choosing a mean-variance optimal portfolio. In contrast to the Bayesian approach to estimation error, where there is only a single prior and the investor is neutral to uncertainty, we consider the case...
Persistent link: https://www.econbiz.de/10005791415
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Keynes Meets Markowitz: The Trade-off Between Familiarity and Diversification
Boyle, Phelim; Garlappi, Lorenzo; Uppal, Raman; Wang, Tan - C.E.P.R. Discussion Papers - 2010
assets - and Markowitz - who advocates diversification across assets. We rely on the concepts of ambiguity and ambiguity … degree of ambiguity across assets, and (ii) the standard deviation of the estimate of expected return on each asset. If the … standard deviation of the expected return estimate and the difference between the ambiguity about familiar and unfamiliar …
Persistent link: https://www.econbiz.de/10008468537
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Portfolio Selection with Parameter and Model Uncertainty: A Multi-Prior Approach
Garlappi, Lorenzo; Uppal, Raman; Wang, Tan - C.E.P.R. Discussion Papers - 2005
In this paper, we show how an investor can incorporate uncertainty about expected returns when choosing a mean-variance optimal portfolio. In contrast to the Bayesian approach to estimation error, where there is only a single prior and the investor is neutral to uncertainty, we consider the case...
Persistent link: https://www.econbiz.de/10005124485
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Model Misspecification and Under-Diversification
Uppal, Raman; Wang, Tan - C.E.P.R. Discussion Papers - 2002
asset returns. Our contribution is to develop a framework that allows for ambiguity about the joint distribution of returns … for all stocks being considered for the portfolio, and also for different levels of ambiguity for the marginal … international equity returns. The calibration shows that when the overall ambiguity about the joint distribution of returns is high …
Persistent link: https://www.econbiz.de/10005504745
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Insider Trading in Credit Derivatives
Acharya, Viral V; Johnson, Tim - C.E.P.R. Discussion Papers - 2005
Insider trading in the credit derivatives market has become a significant concern for regulators and participants. This paper attempts to quantify the problem. Using news reflected in the stock market as a benchmark for public information, we report evidence of significant incremental...
Persistent link: https://www.econbiz.de/10005666591
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Optimal Determination of Bookmakers' Betting Odds: Theory and Tests
Fingleton, John; Waldron, Patrick - C.E.P.R. Discussion Papers - 1997
This paper develops a theoretical model of how bookmakers’ odds are determined, given varying levels of inside information on the part of punters. Bookmakers’ attitudes towards risk and the degree of competition between them will influence bookmaker behaviour. Using a data set of 1696 races...
Persistent link: https://www.econbiz.de/10005792029
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Variance risk, financial intermediation, and the cross-section of expected option returns
Schürhoff, Norman; Ziegler, Alexandre - C.E.P.R. Discussion Papers - 2011
We explore the pricing of variance risk by decomposing stocks' total variance into systematic and idiosyncratic return variances. While systematic variance risk exhibits a negative price of risk, common shocks to the variances of idiosyncratic returns carry a large positive risk premium. This...
Persistent link: https://www.econbiz.de/10008854530
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Asset Pricing under Rational Learning about Rare Disasters
Koulovatianos, Christos; Wieland, Volker - C.E.P.R. Discussion Papers - 2011
This paper proposes a new approach for modeling investor fear after rare disasters. The key element is to take into account that investors' information about fundamentals driving rare downward jumps in the dividend process is not perfect. Bayesian learning implies that beliefs about the...
Persistent link: https://www.econbiz.de/10009201120
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Belief Dependent Utilities, Aversion to State-Uncertainty and Asset Prices
Veronesi, Pietro - C.E.P.R. Discussion Papers - 2001
This Paper reinterprets standard axioms in choice theory to introduce the concepts of ‘belief dependent’ utility functions and aversion to ‘state-uncertainty’. It shows that this type of preference helps to explain the various stylized facts of asset returns, including a high equity risk...
Persistent link: https://www.econbiz.de/10005661469