The Efficient Market Theory and Evidence

The Efficient Market Theory and Evidence
Author: Andrew Ang
Publisher: Now Publishers Inc
Total Pages: 99
Release: 2011
Genre: Business & Economics
ISBN: 1601984685

The Efficient Market Hypothesis (EMH) asserts that, at all times, the price of a security reflects all available information about its fundamental value. The implication of the EMH for investors is that, to the extent that speculative trading is costly, speculation must be a loser's game. Hence, under the EMH, a passive strategy is bound eventually to beat a strategy that uses active management, where active management is characterized as trading that seeks to exploit mispriced assets relative to a risk-adjusted benchmark. The EMH has been refined over the past several decades to reflect the realism of the marketplace, including costly information, transactions costs, financing, agency costs, and other real-world frictions. The most recent expressions of the EMH thus allow a role for arbitrageurs in the market who may profit from their comparative advantages. These advantages may include specialized knowledge, lower trading costs, low management fees or agency costs, and a financing structure that allows the arbitrageur to undertake trades with long verification periods. The actions of these arbitrageurs cause liquid securities markets to be generally fairly efficient with respect to information, despite some notable anomalies.

Efficiency and Anomalies in Stock Markets

Efficiency and Anomalies in Stock Markets
Author: Wing-Keung Wong
Publisher: Mdpi AG
Total Pages: 232
Release: 2022-02-17
Genre: Business & Economics
ISBN: 9783036530802

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.

The Econometrics of Financial Markets

The Econometrics of Financial Markets
Author: John Y. Campbell
Publisher: Princeton University Press
Total Pages: 630
Release: 2012-06-28
Genre: Business & Economics
ISBN: 1400830214

The past twenty years have seen an extraordinary growth in the use of quantitative methods in financial markets. Finance professionals now routinely use sophisticated statistical techniques in portfolio management, proprietary trading, risk management, financial consulting, and securities regulation. This graduate-level textbook is intended for PhD students, advanced MBA students, and industry professionals interested in the econometrics of financial modeling. The book covers the entire spectrum of empirical finance, including: the predictability of asset returns, tests of the Random Walk Hypothesis, the microstructure of securities markets, event analysis, the Capital Asset Pricing Model and the Arbitrage Pricing Theory, the term structure of interest rates, dynamic models of economic equilibrium, and nonlinear financial models such as ARCH, neural networks, statistical fractals, and chaos theory. Each chapter develops statistical techniques within the context of a particular financial application. This exciting new text contains a unique and accessible combination of theory and practice, bringing state-of-the-art statistical techniques to the forefront of financial applications. Each chapter also includes a discussion of recent empirical evidence, for example, the rejection of the Random Walk Hypothesis, as well as problems designed to help readers incorporate what they have read into their own applications.

Empirical Testing for Martingale Property

Empirical Testing for Martingale Property
Author: Amira Akl Ahmed
Publisher:
Total Pages:
Release: 2012
Genre:
ISBN:

In the current thesis, the efficiency of the Egyptian and other four MENA exchanges is examined. The first issue of interest is whether market efficiency in Egypt is related to size and regulatory changes. Employing weekly data for the period 1997-2007 and a battery of variance ratio tests (VRs), results indicated that the market was inefficient in pricing all securities during the first sub-period with tight price limits regime, however; it has become efficient in pricing securities, excluding small-capitalized firms, after the expansion of price limits coupled with adopting trading halt for few minutes if prices hit their new limits. The second issue considered is testing for weak-form-efficiency in five MENA exchanges during 1995-2009 using VRs in rolling window estimation to accommodate developments in the underlying exchanges. Results indicate that Turkish and Israeli exchanges are the most efficient throughout the whole period whereas both the Egyptian and Moroccan exchanges moved towards efficiency since late 2002 and the Jordanian exchange experienced inefficiencies during the end of the period. Exchange rates do not matter in determining the dynamics of equity markets examined. The last issue examined is the interdependence and information transmission across super sectors within the same exchange in Egypt, Turkey, and Israel. Multivariate co-integration analysis, which is executed from the domestic investor perspective, indicates the absence of long-term relationship in either exchange. In general, generalised impulse responses indicate that a positive shock in one index in either exchange affects other indexes in the same exchange. However, this impact tapers off quickly. More importantly, most of the impact is on the index experiencing the innovation and the effect on the remaining indexes is relatively small.

Empirical Market Microstructure

Empirical Market Microstructure
Author: Joel Hasbrouck
Publisher: Oxford University Press
Total Pages: 209
Release: 2007-01-04
Genre: Business & Economics
ISBN: 0198041306

The interactions that occur in securities markets are among the fastest, most information intensive, and most highly strategic of all economic phenomena. This book is about the institutions that have evolved to handle our trading needs, the economic forces that guide our strategies, and statistical methods of using and interpreting the vast amount of information that these markets produce. The book includes numerous exercises.

The Handbook of Equity Market Anomalies

The Handbook of Equity Market Anomalies
Author: Leonard Zacks
Publisher: John Wiley & Sons
Total Pages: 352
Release: 2011-08-24
Genre: Business & Economics
ISBN: 1118127765

Investment pioneer Len Zacks presents the latest academic research on how to beat the market using equity anomalies The Handbook of Equity Market Anomalies organizes and summarizes research carried out by hundreds of finance and accounting professors over the last twenty years to identify and measure equity market inefficiencies and provides self-directed individual investors with a framework for incorporating the results of this research into their own investment processes. Edited by Len Zacks, CEO of Zacks Investment Research, and written by leading professors who have performed groundbreaking research on specific anomalies, this book succinctly summarizes the most important anomalies that savvy investors have used for decades to beat the market. Some of the anomalies addressed include the accrual anomaly, net stock anomalies, fundamental anomalies, estimate revisions, changes in and levels of broker recommendations, earnings-per-share surprises, insider trading, price momentum and technical analysis, value and size anomalies, and several seasonal anomalies. This reliable resource also provides insights on how to best use the various anomalies in both market neutral and in long investor portfolios. A treasure trove of investment research and wisdom, the book will save you literally thousands of hours by distilling the essence of twenty years of academic research into eleven clear chapters and providing the framework and conviction to develop market-beating strategies. Strips the academic jargon from the research and highlights the actual returns generated by the anomalies, and documented in the academic literature Provides a theoretical framework within which to understand the concepts of risk adjusted returns and market inefficiencies Anomalies are selected by Len Zacks, a pioneer in the field of investing As the founder of Zacks Investment Research, Len Zacks pioneered the concept of the earnings-per-share surprise in 1982 and developed the Zacks Rank, one of the first anomaly-based stock selection tools. Today, his firm manages U.S. equities for individual and institutional investors and provides investment software and investment data to all types of investors. Now, with his new book, he shows you what it takes to build a quant process to outperform an index based on academically documented market inefficiencies and anomalies.

Introduction to Econophysics

Introduction to Econophysics
Author: Rosario N. Mantegna
Publisher: Cambridge University Press
Total Pages: 164
Release: 1999-11-13
Genre: Business & Economics
ISBN: 1139431226

This book concerns the use of concepts from statistical physics in the description of financial systems. The authors illustrate the scaling concepts used in probability theory, critical phenomena, and fully developed turbulent fluids. These concepts are then applied to financial time series. The authors also present a stochastic model that displays several of the statistical properties observed in empirical data. Statistical physics concepts such as stochastic dynamics, short- and long-range correlations, self-similarity and scaling permit an understanding of the global behaviour of economic systems without first having to work out a detailed microscopic description of the system. Physicists will find the application of statistical physics concepts to economic systems interesting. Economists and workers in the financial world will find useful the presentation of empirical analysis methods and well-formulated theoretical tools that might help describe systems composed of a huge number of interacting subsystems.

An Engine, Not a Camera

An Engine, Not a Camera
Author: Donald MacKenzie
Publisher: MIT Press
Total Pages: 782
Release: 2008-08-29
Genre: Technology & Engineering
ISBN: 0262250047

In An Engine, Not a Camera, Donald MacKenzie argues that the emergence of modern economic theories of finance affected financial markets in fundamental ways. These new, Nobel Prize-winning theories, based on elegant mathematical models of markets, were not simply external analyses but intrinsic parts of economic processes. Paraphrasing Milton Friedman, MacKenzie says that economic models are an engine of inquiry rather than a camera to reproduce empirical facts. More than that, the emergence of an authoritative theory of financial markets altered those markets fundamentally. For example, in 1970, there was almost no trading in financial derivatives such as "futures." By June of 2004, derivatives contracts totaling $273 trillion were outstanding worldwide. MacKenzie suggests that this growth could never have happened without the development of theories that gave derivatives legitimacy and explained their complexities. MacKenzie examines the role played by finance theory in the two most serious crises to hit the world's financial markets in recent years: the stock market crash of 1987 and the market turmoil that engulfed the hedge fund Long-Term Capital Management in 1998. He also looks at finance theory that is somewhat beyond the mainstream—chaos theorist Benoit Mandelbrot's model of "wild" randomness. MacKenzie's pioneering work in the social studies of finance will interest anyone who wants to understand how America's financial markets have grown into their current form.