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Incomplete Information and Heterogeneous Beliefs in Continuous-time Finance

  • Fester Einband
  • 194 Seiten
This book considers the impact of incomplete information and heterogeneous beliefs on investor's optimal portfolio and consumption... Weiterlesen
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Beschreibung

This book considers the impact of incomplete information and heterogeneous beliefs on investor's optimal portfolio and consumption behavior and equilibrium asset prices. After a brief review of the existing incomplete information literature, the effect of incomplete information on investors' exptected utility, risky asset prices, and interest rates is described. It is demonstrated that increasing the quality of investors' information need not increase their expected utility and the prices of risky assets. The impact of heterogeneous beliefs on investors' portfolio and consumption behavior and equilibrium asset prices is shown to be non-trivial. Heterogeneous beliefs can explain a number of observed phenomena, such as the fact that equilibrium state-price densities are not log-normal, the "smile" in option implied volatility, and the patterns of implied risk aversion reported recently in the literature. It is also demonstrated that financial markets in general do not aggregate information efficiently, a fact that can explain the equity premium puzzle.

Klappentext

After a brief review of the existing incomplete information literature, the effect of incomplete information on investors' exptected utility, risky asset prices, and interest rates is described. It is demonstrated that increasing the quality of investors' information need not increase their expected utility and the prices of risky assets. The impact of other factors is discussed in detail. It is also demonstrated that financial markets in general do not aggregate information efficiently, a fact that can explain the equity premium puzzle.



Zusammenfassung
From the reviews of the first edition: "The book is mainly addressed to researchers and graduate students in the fields of economics or finance. However, interested practitioners may also be counted to its target audience. ... the book presents an interesting source for those readers interested in the interplay of (micro-) economics and finance, ie. of incomplete information, heterogeneous beliefs and continuous-time financial models." (Klaus Schürger, Zentralblatt MATH, Vol. 1074, 2005)

Inhalt

1 Incomplete Information: An Overview.- 1.1 Introduction.- 1.2 Portfolio Choice.- 1.2.1 Gennotte's Model.- 1.2.2 The Inference Process.- 1.2.3 Optimal Portfolio Choice.- 1.2.4 An Example.- 1.2.5 The Short Interest Rate.- 1.3 The Term Structure of Interest Rates.- 1.3.1 Dothan and Feldman's Models.- 1.3.2 A Characterization of the Term Structure.- 1.4 Equilibrium Asset Pricing.- 1.4.1 Honda's Model.- 1.4.2 The Equilibrium Price Process.- 1.5 Conclusion and Outlook.- 2 The Impact of Incomplete Information on Utility, Prices, and Interest Rates.- 2.1 Introduction.- 2.2 The Model.- 2.3 Equilibrium.- 2.3.1 The Equilibrium Expected Lifetime Utility.- 2.3.2 The Equilibrium Price.- 2.3.3 The Equilibrium Interest Rate.- 2.4 Logarithmic Utility.- 2.4.1 The Equilibrium Expected Lifetime Utility.- 2.4.2 The Equilibrium Price.- 2.4.3 The Equilibrium Interest Rate.- 2.5 Power Utility.- 2.5.1 The Equilibrium Expected Lifetime Utility.- 2.5.2 The Equilibrium Price.- 2.5.3 The Equilibrium Interest Rate.- 2.5.4 Hedging Demand and the Equilibrium Price of Estimation Risk.- 2.6 Information, Utility, Prices, and Interest Rates: A Synthesis.- 2.6.1 Expected Lifetime Utility.- 2.6.2 Share Prices.- 2.6.3 Interest Rates.- 2.7 Time-Varying Parameters.- 2.7.1 The Equilibrium Expected Lifetime Utility.- 2.7.2 The Equilibrium Price.- 2.7.3 The Equilibrium Interest Rate.- 2.8 Conclusion.- 3 Optimal Portfolio Choice Under Heterogeneous Beliefs.- 3.1 Introduction.- 3.2 The Model.- 3.3 The Deviant Agent's Problem.- 3.4 Optimal Portfolio Choice.- 3.5 An Example.- 3.6 Conclusion.- 4 Optimal Consumption Under Heterogeneous Beliefs.- 4.1 Introduction.- 4.2 The Cox-Huang Methodology.- 4.3 Heterogeneous Beliefs.- 4.4 An Example.- 4.4.1 The Model.- 4.4.2 Optimal Consumption Patterns Under Heterogeneous Beliefs.- 4.4.3 An Algebraic Solution.- 4.4.4 The Effect of the Time Horizon.- 4.5 Portfolios and Consumption: A Synthesis.- 4.6 Conclusion.- 5 Equilibrium Asset Pricing Under Heterogeneous Beliefs.- 5.1 Introduction.- 5.2 The Model.- 5.3 Equilibrium Consumption.- 5.4 Equilibrium Prices.- 5.4.1 The Equilibrium State-Price Density.- 5.4.2 The Equilibrium Short Rate.- 5.4.3 The Equilibrium Yield Curve.- 5.4.4 The Equilibrium Share Price.- 5.4.5 Equilibrium Option Prices and the "Smile Effect".- 5.5 Implied Risk Aversion.- 5.6 Conclusion.- 6 Costly Information, Imperfect Learning, and Information Aggregation.- 6.1 Introduction.- 6.2 The Model.- 6.2.1 The Economy.- 6.2.2 The Inference Process: Imperfect Learning.- 6.3 Portfolio Choice under Costly Information.- 6.3.1 The Agent's Problem.- 6.3.2 The Agent's Optimal Investment and Research Policy.- 6.3.3 Determinants of the Demand for Information.- 6.3.4 Diversification and Information Costs.- 6.4 Equilibrium Asset Pricing.- 6.5 Information Aggregation and the Equity Premium.- 6.6 Conclusion.- 7 Summary and Conclusion.- C The Short Rate Under Heterogeneous Beliefs.- References.- List of Figures.- List of Tables.- List of Symbols.

Produktinformationen

Titel: Incomplete Information and Heterogeneous Beliefs in Continuous-time Finance
Autor:
EAN: 9783540003441
ISBN: 978-3-540-00344-1
Format: Fester Einband
Herausgeber: Springer-Verlag GmbH
Genre: Volkswirtschaft
Anzahl Seiten: 194
Gewicht: 435g
Größe: H242mm x B164mm x T18mm
Jahr: 2003
Auflage: 2003. 2003.

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