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On the Economic Value of Modeling Fat Tails

On the Economic Value of Modeling Fat Tails
Author: Prasad V. Bidarkota
Publisher:
Total Pages: 34
Release: 2003
Genre:
ISBN:

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We investigate the impact of modeling fat tails observed in the empirical distributions of macroeconomic time series on the implications of theoretical macroeconomic models. We study this issue in the context of the widely used consumption-based asset-pricing model. We derive exact analytical solutions to bond prices and risk premiums on forward prices and holding period returns in this model, assuming that the endowment evolves as a stochastic process with innovations drawn alternatively from fat-tailed and Gaussian distributions. We calculate and compare the implied risk premiums for suitable parameterizations of the two versions of the model.


Statistical Consequences of Fat Tails

Statistical Consequences of Fat Tails
Author: Nassim Nicholas Taleb
Publisher:
Total Pages:
Release: 2020-06-30
Genre:
ISBN: 9781544508054

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The book investigates the misapplication of conventional statistical techniques to fat tailed distributions and looks for remedies, when possible. Switching from thin tailed to fat tailed distributions requires more than "changing the color of the dress." Traditional asymptotics deal mainly with either n=1 or n=∞, and the real world is in between, under the "laws of the medium numbers"-which vary widely across specific distributions. Both the law of large numbers and the generalized central limit mechanisms operate in highly idiosyncratic ways outside the standard Gaussian or Levy-Stable basins of convergence. A few examples: - The sample mean is rarely in line with the population mean, with effect on "naïve empiricism," but can be sometimes be estimated via parametric methods. - The "empirical distribution" is rarely empirical. - Parameter uncertainty has compounding effects on statistical metrics. - Dimension reduction (principal components) fails. - Inequality estimators (Gini or quantile contributions) are not additive and produce wrong results. - Many "biases" found in psychology become entirely rational under more sophisticated probability distributions. - Most of the failures of financial economics, econometrics, and behavioral economics can be attributed to using the wrong distributions. This book, the first volume of the Technical Incerto, weaves a narrative around published journal articles.


Complex Systems in Finance and Econometrics

Complex Systems in Finance and Econometrics
Author: Robert A. Meyers
Publisher: Springer Science & Business Media
Total Pages: 919
Release: 2010-11-03
Genre: Business & Economics
ISBN: 1441977007

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Finance, Econometrics and System Dynamics presents an overview of the concepts and tools for analyzing complex systems in a wide range of fields. The text integrates complexity with deterministic equations and concepts from real world examples, and appeals to a broad audience.


The Fat Tail

The Fat Tail
Author: Ian Bremmer
Publisher: Oxford University Press
Total Pages: 274
Release: 2010-05-13
Genre: Business & Economics
ISBN: 0199752885

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As Ian Bremmer and Preston Keat reveal in this innovative book, volatile political events such as the 2008 Georgia-Russia confrontation--and their catastrophic effects on business--happen much more frequently than investors imagine. On the curve that charts both the frequency of these events and the power of their impact, the "tail" of extreme political instability is not reassuringly thin but dangerously fat. Featuring a new Foreward that accounts for the cataclysmic effects of the 2008 financial crisis, The Fat Tail is the first book to both identify the wide range of political risks that global firms face and show investors how to effectively manage them. Written by two of the world's leading figures in political risk management, it reveals that while the world remains exceedingly risky for businesses, it is by no means incomprehensible. Political risk is unpredictable, but it is easier to analyze and manage than most people think. Applying the lessons of world history, Bremmer and Keat survey a vast range of contemporary risky situations, from stable markets like the United States or Japan, where politically driven regulation can still dramatically effect business, to more precarious places like Iran, China, Russia, Turkey, Mexico, and Nigeria, where private property is less secure and energy politics sparks constant volatility. The book sheds light on a wide array of political risks--risks that stem from great power rivalries, terrorist groups, government takeover of private property, weak leaders and internal strife, and even the "black swans" that defy prediction. But more importantly, the authors provide a wealth of unique methods, tools, and concepts to help corporations, money managers, and policy makers understand political risk, showing when and how political risk analysis works--and when it does not. "The Fat Tail delivers practical wisdom on the impact of political risk on firms of every description and valuable advice on how to use it. Ian Bremmer and Preston Keat offer innovative thinking and useful insight that will help business decision-makers find fresh answers to questions they may not yet know they have." --Fareed Zakaria, best-selling author of The Post-American World "Political risk has become increasingly complex, and The Fat Tail provides a truly new way to quantitatively assess it in established and emerging markets. It is essential reading for any CEO with multinational interests." --Randall Stephenson, Chairman, CEO and President, AT&T Inc. "Should be essential reading for anyone involved in international business even--perhaps especially--in places that seem politically stable." --Bill Emmott, former editor-in-chief of The Economist


ValuFocus Investing

ValuFocus Investing
Author: Rawley Thomas
Publisher: John Wiley & Sons
Total Pages: 283
Release: 2012-11-26
Genre: Business & Economics
ISBN: 1118283244

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A must-read book for investors who prefer to pick stocks based on cash flow facts, not on media hype and fiction How to Pick a Stock is written for the contrarian investor who wants an investing method that is based on cash flow facts, not on media hype and speculative impulse. This book combines an accessible presentation of a contrarian investment model and the ValuFocus tool that offers a highly studious, detailed explanation of understanding a company's true intrinsic value. If you can calculate a company's intrinsic value on the basis of knowing if the market is currently under, fairly, or over pricing its stock, then it is possible to invest wisely in the stock market. Investors who want to buy undervalued stocks, or sell (short) overvalued ones will find this book immensely useful. The ValuFocus investing tool calculates the intrinsic value of every company in their database automatically. Thus, an individual investor can become an "A" student of a modeling process, or can go right ahead in using this tool to pick stocks and manage their own portfolio. Additionally, this book helps to develop an enhanced framework to fundamental equity valuation. Contains the ValuFocus tool for calculating the intrinsic value of every company in the LCRT Nucleus database Offers specific and innovative valuation techniques of practicing professionals for individuals to use in picking stocks long-term Highlights the most state-of-the-art approaches to unconventional stock-picking for investors and corporate finance professionals Offering encouragement to individual investors by outlining a model that delivers satisfying returns, How to Pick a Stock is especially useful for those who are patient and believe in longer-term investing horizons.


The Economy as a Complex Spatial System

The Economy as a Complex Spatial System
Author: Pasquale Commendatore
Publisher: Springer
Total Pages: 227
Release: 2017-09-18
Genre: Science
ISBN: 3319656279

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This book is open access under a CC BY-NC 4.0 license. This collected volume represents the final outcome of the COST Action IS1104 “The EU in the new complex geography of economic systems: models, tools and policy evaluation”. Visualizing the EU as a complex and multi-layered network, the book is organized in three parts, each of them dealing with a different level of analysis: At the macro-level, Part I considers the interactions within large economic systems (regions or countries) involving trade, workers migration, and other factor movements. At the meso-level, Part II discusses interactions within specific but wide-ranging markets, with a focus on financial markets and banking systems. Lastly, at the micro-level, Part III explores the decision-making of single firms, especially in the context of location decisions.


Fat-Tailed and Skewed Asset Return Distributions

Fat-Tailed and Skewed Asset Return Distributions
Author: Svetlozar T. Rachev
Publisher: John Wiley & Sons
Total Pages: 385
Release: 2005-09-15
Genre: Business & Economics
ISBN: 0471758906

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While mainstream financial theories and applications assume that asset returns are normally distributed, overwhelming empirical evidence shows otherwise. Yet many professionals don’t appreciate the highly statistical models that take this empirical evidence into consideration. Fat-Tailed and Skewed Asset Return Distributions examines this dilemma and offers readers a less technical look at how portfolio selection, risk management, and option pricing modeling should and can be undertaken when the assumption of a non-normal distribution for asset returns is violated. Topics covered in this comprehensive book include an extensive discussion of probability distributions, estimating probability distributions, portfolio selection, alternative risk measures, and much more. Fat-Tailed and Skewed Asset Return Distributions provides a bridge between the highly technical theory of statistical distributional analysis, stochastic processes, and econometrics of financial returns and real-world risk management and investments.


The Nature of Value

The Nature of Value
Author: Nick Gogerty
Publisher: Columbia University Press
Total Pages: 368
Release: 2014-07-15
Genre: Business & Economics
ISBN: 0231162448

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The Nature of Value presents a theory of how economic value functions and how it drives growth, starting with tiny sparks of innovation and scaling all the way up to the full scope of the economy. Nick GogertyÕs exploration of value borrows from a wide array of disciplines, including anthropology, psychology, physics, sociology, and ethics, but most of all, it examines how evolutionÕs processes can help investors understand the economy and how investors can use this new understanding to improve their allocation decisions. Starting with a look at how innovations can help firms succeed, Gogerty looks at the economic niches in which firms compete and explores how firms can create defensive ÒmoatsÓ to enhance their chances of survival. He shows allocators how to adjust their actions for best performance and returns and what to look for when assessing company management, supporting his arguments with extensive data and years of practitioner experience from scientific, social, and economic disciplines. Intuitive illustrations are used to illuminate central concepts and ideas. GogertyÕs practical takeaways, couched in vivid explanations, will help investors of all backgrounds gain fresh insight into market mechanics.


Fat-tailed Distributions

Fat-tailed Distributions
Author: Roger M. Cooke
Publisher:
Total Pages:
Release: 2014
Genre: MATHEMATICS
ISBN: 9781119054207

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The Valuation Handbook, (Custom Chapter 14)

The Valuation Handbook, (Custom Chapter 14)
Author: Rawley Thomas
Publisher: John Wiley & Sons
Total Pages: 806
Release: 2009-10-01
Genre: Business & Economics
ISBN: 0470539976

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The definitive guide to valuation written by a who's who of today's top practitioners The Valuation Handbook differs significantly from other related books on this topic because the contributors are practitioners, academics, and investment firms that explain how they value companies and other assets. It concentrates on specific and innovative valuation techniques, rather than the theoretical approaches more generally accepted and discussed. Given the extreme volatility of the stock market, valuation is a critical issue for analysts, investors, and businesses. Here, various professional contributors explain how their firms approach the valuation process, while academic contributors share their valuation consulting and research experience. Examines how to value assets in today's dynamic market setting Offers a broad spectrum of ideas from some of the top practitioners and academics in this field Highlights state-of-the-art approaches to company valuation Filled with in-depth insights and expert advice, The Valuation Handbook puts this difficult discipline in perspective.