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Ambiguity Aversion And Portfolio Efficiency Tests
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Book Synopsis Ambiguity Aversion and Portfolio Efficiency Tests by : Valery Polkovnichenko
Download or read book Ambiguity Aversion and Portfolio Efficiency Tests written by Valery Polkovnichenko and published by . This book was released on 2019 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Testing portfolio alpha against a linear factor model can be interpreted as a mean-variance efficiency test of the optimal portfolio of factors. For ambiguity neutral investor, adding active portfolio with statistically significant alpha always implies efficiency gain relative to the optimal portfolio of factors. In contrast, for ambiguity averse investor, the efficiency gain must be above a threshold which depends on the uncertainty about the factors' and active portfolio's expected returns. Building on the theoretical framework developed in Garlappi, Uppal and Wang (2007), we propose a new method to test portfolio efficiency relative to a factor model by using asset exclusion conditions from the optimal portfolio of the ambiguity averse investor. The asset exclusion threshold is an F-statistic that is non-redundant with significance of alpha under the ambiguity-neutral test. Active portfolios with statistically significant alpha but weak efficiency gain may be excluded from the optimal portfolio. We apply this criterion empirically to screen active portfolios ("anomalies'') and find that some anomalies do not pass our exclusion test under statistically reasonable ambiguity about their expected return.
Book Synopsis Ambiguity Aversion and Household Portfolio Choice by :
Download or read book Ambiguity Aversion and Household Portfolio Choice written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ambiguity Aversion and Household Portfolio Choice by : Stephen G. Dimmock
Download or read book Ambiguity Aversion and Household Portfolio Choice written by Stephen G. Dimmock and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: We test the relation between ambiguity aversion and five household portfolio choice puzzles: non- participation, low allocations to equity, home-bias, own-company stock ownership, and portfolio under- diversification. In a representative U.S. household survey, we measure ambiguity aversion using custom- designed questions based on Ellsberg urns. As theory predicts, ambiguity aversion is negatively associated with stock market participation, the fraction of financial assets in stocks, and foreign stock ownership, but positively related to own-company stock ownership. Conditional on stock ownership, ambiguity aversion is related to portfolio under-diversification, and during the financial crisis, ambiguity-averse respondents were more likely to sell stocks.
Book Synopsis Ambiguity Aversion and Household Portfolio Choice Puzzles by : Stephen G. Dimmock
Download or read book Ambiguity Aversion and Household Portfolio Choice Puzzles written by Stephen G. Dimmock and published by . This book was released on 2016 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: We test the relation between ambiguity aversion and five household portfolio choice puzzles: non-participation in equities, low allocations to equity, home-bias, own-company stock ownership, and portfolio under-diversification. In a representative U.S. household survey, we measure ambiguity preferences using custom-designed questions based on Ellsberg urns. As theory predicts, ambiguity aversion is negatively associated with stock market participation, the fraction of financial assets in stocks, and foreign stock ownership, but it is positively related to own-company stock ownership. Conditional on stock ownership, ambiguity aversion is related to portfolio under-diversification, and during the financial crisis, ambiguity-averse respondents were more likely to sell stocks.
Book Synopsis Does Ambiguity Aversion Reinforce Risk Aversion? by :
Download or read book Does Ambiguity Aversion Reinforce Risk Aversion? written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Developments in Mean-Variance Efficient Portfolio Selection by : M. Agarwal
Download or read book Developments in Mean-Variance Efficient Portfolio Selection written by M. Agarwal and published by Springer. This book was released on 2015-12-11 with total page 259 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses new determinants for optimal portfolio selection. It reviews the existing modelling framework and creates mean-variance efficient portfolios from the securities companies on the National Stock Exchange. Comparisons enable researchers to rank them in terms of their effectiveness in the present day Indian securities market.
Book Synopsis Online Appendix for 'Ambiguity Aversion and Household Portfolio Choice Puzzles by : Stephen G. Dimmock
Download or read book Online Appendix for 'Ambiguity Aversion and Household Portfolio Choice Puzzles written by Stephen G. Dimmock and published by . This book was released on 2017 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Online Appendix for “Ambiguity Aversion and Household Portfolio Choice Puzzles: Empirical Evidence”
Book Synopsis Handbook of the Economics of Risk and Uncertainty by : Mark Machina
Download or read book Handbook of the Economics of Risk and Uncertainty written by Mark Machina and published by Newnes. This book was released on 2013-11-14 with total page 897 pages. Available in PDF, EPUB and Kindle. Book excerpt: The need to understand the theories and applications of economic and finance risk has been clear to everyone since the financial crisis, and this collection of original essays proffers broad, high-level explanations of risk and uncertainty. The economics of risk and uncertainty is unlike most branches of economics in spanning from the individual decision-maker to the market (and indeed, social decisions), and ranging from purely theoretical analysis through individual experimentation, empirical analysis, and applied and policy decisions. It also has close and sometimes conflicting relationships with theoretical and applied statistics, and psychology. The aim of this volume is to provide an overview of diverse aspects of this field, ranging from classical and foundational work through current developments. Presents coherent summaries of risk and uncertainty that inform major areas in economics and finance Divides coverage between theoretical, empirical, and experimental findings Makes the economics of risk and uncertainty accessible to scholars in fields outside economics
Book Synopsis Ambiguity Aversion and Stock Market Participation by : Constantinos Antoniou
Download or read book Ambiguity Aversion and Stock Market Participation written by Constantinos Antoniou and published by . This book was released on 2019 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: The propensity of households to invest in stocks is lower than implied by Expected Utility Theory. One explanation suggested in the literature is that stocks entail ambiguity and investors are ambiguity averse. We test this hypothesis, measuring participation using equity fund flows and ambiguity with dispersion in analyst forecasts about aggregate returns. We show that increases in ambiguity are negatively related to equity fund flows. Moreover, using survey data, we find that increases in ambiguity significantly reduce the likelihood that the average household invests in equities. These results support the notion that limited market participation is related to ambiguity aversion.
Book Synopsis Ambiguity Aversion Solves the Conflict Between Efficiency and Incentive Compatibility by : Luciano De Castro
Download or read book Ambiguity Aversion Solves the Conflict Between Efficiency and Incentive Compatibility written by Luciano De Castro and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stochastic Dominance written by Haim Levy and published by Springer. This book was released on 2015-10-31 with total page 517 pages. Available in PDF, EPUB and Kindle. Book excerpt: This fully updated third edition is devoted to the analysis of various Stochastic Dominance (SD) decision rules. It discusses the pros and cons of each of the alternate SD rules, the application of these rules to various research areas like statistics, agriculture, medicine, measuring income inequality and the poverty level in various countries, and of course, to investment decision-making under uncertainty. The book features changes and additions to the various chapters, and also includes two completely new chapters. One deals with asymptotic SD and the relation between FSD and the maximum geometric mean (MGM) rule (or the maximum growth portfolio). The other new chapter discusses bivariate SD rules where the individual’s utility is determined not only by his own wealth, but also by his standing relative to his peer group. Stochastic Dominance: Investment Decision Making under Uncertainty, 3rd Ed. covers the following basic issues: the SD approach, asymptotic SD rules, the mean-variance (MV) approach, as well as the non-expected utility approach. The non-expected utility approach focuses on Regret Theory (RT) and mainly on prospect theory (PT) and its modified version, cumulative prospect theory (CPT) which assumes S-shape preferences. In addition to these issues the book suggests a new stochastic dominance rule called the Markowitz stochastic dominance (MSD) rule corresponding to all reverse-S-shape preferences. It also discusses the concept of the multivariate expected utility and analyzed in more detail the bivariate expected utility case. From the reviews of the second edition: "This book is an economics book about stochastic dominance. ... is certainly a valuable reference for graduate students interested in decision making under uncertainty. It investigates and compares different approaches and presents many examples. Moreover, empirical studies and experimental results play an important role in this book, which makes it interesting to read." (Nicole Bäuerle, Mathematical Reviews, Issue 2007 d)
Book Synopsis Efficient Asset Management by : Richard O. Michaud
Download or read book Efficient Asset Management written by Richard O. Michaud and published by Oxford University Press. This book was released on 2008-03-03 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt: In spite of theoretical benefits, Markowitz mean-variance (MV) optimized portfolios often fail to meet practical investment goals of marketability, usability, and performance, prompting many investors to seek simpler alternatives. Financial experts Richard and Robert Michaud demonstrate that the limitations of MV optimization are not the result of conceptual flaws in Markowitz theory but unrealistic representation of investment information. What is missing is a realistic treatment of estimation error in the optimization and rebalancing process. The text provides a non-technical review of classical Markowitz optimization and traditional objections. The authors demonstrate that in practice the single most important limitation of MV optimization is oversensitivity to estimation error. Portfolio optimization requires a modern statistical perspective. Efficient Asset Management, Second Edition uses Monte Carlo resampling to address information uncertainty and define Resampled Efficiency (RE) technology. RE optimized portfolios represent a new definition of portfolio optimality that is more investment intuitive, robust, and provably investment effective. RE rebalancing provides the first rigorous portfolio trading, monitoring, and asset importance rules, avoiding widespread ad hoc methods in current practice. The Second Edition resolves several open issues and misunderstandings that have emerged since the original edition. The new edition includes new proofs of effectiveness, substantial revisions of statistical estimation, extensive discussion of long-short optimization, and new tools for dealing with estimation error in applications and enhancing computational efficiency. RE optimization is shown to be a Bayesian-based generalization and enhancement of Markowitz's solution. RE technology corrects many current practices that may adversely impact the investment value of trillions of dollars under current asset management. RE optimization technology may also be useful in other financial optimizations and more generally in multivariate estimation contexts of information uncertainty with Bayesian linear constraints. Michaud and Michaud's new book includes numerous additional proposals to enhance investment value including Stein and Bayesian methods for improved input estimation, the use of portfolio priors, and an economic perspective for asset-liability optimization. Applications include investment policy, asset allocation, and equity portfolio optimization. A simple global asset allocation problem illustrates portfolio optimization techniques. A final chapter includes practical advice for avoiding simple portfolio design errors. With its important implications for investment practice, Efficient Asset Management 's highly intuitive yet rigorous approach to defining optimal portfolios will appeal to investment management executives, consultants, brokers, and anyone seeking to stay abreast of current investment technology. Through practical examples and illustrations, Michaud and Michaud update the practice of optimization for modern investment management.
Book Synopsis Uncertainty in Economic Theory by : Itzhak Gilboa
Download or read book Uncertainty in Economic Theory written by Itzhak Gilboa and published by Taylor & Francis. This book was released on 2004-08-02 with total page 577 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume brings together important papers, coupled with new introductions, in the massively influential area of uncertainty in economic theory. Seminal papers are available together for the first time in book format, with new introductions and under the steely editorship of Itzhak Gilboa - this book is a useful reference tool for economists all over the globe.
Book Synopsis The Fama Portfolio by : Eugene F. Fama
Download or read book The Fama Portfolio written by Eugene F. Fama and published by University of Chicago Press. This book was released on 2017-09-07 with total page 826 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection of the most influential work of the Nobel Prize laureate in economic sciences serves as an introduction for a new generation of readers. Few scholars have been as influential in finance and economics as University of Chicago professor Eugene F. Fama. Over the course of a brilliant and productive career, Fama has published more than one hundred papers, filled with diverse, highly innovative contributions. Published soon after the fiftieth anniversary of Fama’s appointment to the University of Chicago and his receipt of the Nobel Prize in Economics, The Fama Portfolio offers an authoritative compilation of Fama’s central papers. Many are classics, including his now-famous essay on efficient capital markets. Others, though less famous, are even better statements of the central ideas. Fama’s research considers key questions in finance, both as an academic field and an industry: How is information reflected in asset prices? What is the nature of risk that scares people away from larger returns? Does lots of buying and selling by active managers produce value for their clients? The Fama Portfolio provides for the first time a comprehensive collection of his work and includes introductions and commentary by the book’s editors, John H. Cochrane and Tobias Moskowitz, as well as by Fama’s colleagues, themselves top scholars and successful practitioners in finance. These essays emphasize how the ideas presented in Fama’s papers have influenced later thinking in financial economics, often for decades. “Fama’s ideas have influenced a generation of thinkers without most reading the original source material. This comprehensive collection of his work seeks to right that wrong.” —Bloomberg
Book Synopsis Risk Profiling and Tolerance: Insights for the Private Wealth Manager by : Joachim Klement
Download or read book Risk Profiling and Tolerance: Insights for the Private Wealth Manager written by Joachim Klement and published by CFA Institute Research Foundation. This book was released on 2018-05-01 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: If risk aversion and willingness to take on risk are driven by emotions and we as humans are bad at correctly identifying them, the finance profession has a serious challenge at hand—how to reliably identify the individual risk profile of a retail investor or high-net-worth individual. In this series of CFA Institute Research Foundation briefs, we have asked academics and practitioners to summarize the current state of knowledge about risk profiling in different key areas.
Book Synopsis Forecasting Expected Returns in the Financial Markets by : Stephen Satchell
Download or read book Forecasting Expected Returns in the Financial Markets written by Stephen Satchell and published by Elsevier. This book was released on 2011-04-08 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forecasting returns is as important as forecasting volatility in multiple areas of finance. This topic, essential to practitioners, is also studied by academics. In this new book, Dr Stephen Satchell brings together a collection of leading thinkers and practitioners from around the world who address this complex problem using the latest quantitative techniques. *Forecasting expected returns is an essential aspect of finance and highly technical *The first collection of papers to present new and developing techniques *International authors present both academic and practitioner perspectives
Book Synopsis Efficiency and Anomalies in Stock Markets by : Wing-Keung Wong
Download or read book Efficiency and Anomalies in Stock Markets written by Wing-Keung Wong and published by Mdpi AG. This book was released on 2022-02-17 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Efficient Market Hypothesis believes that it is impossible for an investor to outperform the market because all available information is already built into stock prices. However, some anomalies could persist in stock markets while some other anomalies could appear, disappear and re-appear again without any warning. A Special Issue on "Efficiency and Anomalies in Stock Markets" will be devoted to advancements in the theoretical development of market efficiency and anomaly in the Stock Market, as well as applications in Stock Market efficiency and anomalies.
