Psychological Causes of Financial Market Cycles and Their Effects on Market Efficiency

2010 ◽  
Author(s):  
Austin Murphy
Keyword(s):  
Market Efficiency ◽  
Financial Market

scholarly journals Evidence for and Against the Validity of Efficient Market Hypothesis

2018 ◽  
Vol 56 (3) ◽  
pp. 369-387
Author(s):  
Miljan Leković
Keyword(s):  
Market Efficiency ◽  
Financial Market ◽  
Efficient Market Hypothesis ◽  
Strong Form ◽  
Efficient Market ◽  
Market Anomalies ◽  
Development Path

Abstract The concept of an efficient financial market, in literature known as efficient market hypothesis (EMH), has had a long and difficult development path from the idea itself to its final conception, as one of the central paradigms in modern finance. It has been tested and critically reviewed for decades, and the two basic types of problems it has encountered are theoretical paradoxes and market anomalies. The aim of the paper is to examine the validity of EMH through various financial market efficiency tests and the results of previous research. The intention is to answer the question of whether, despite theoretical paradoxes and market anomalies, the notion of validity can be attributed to the concept of an efficient financial market. In this regard, the paper presents plenty of evidence for and against the validity of weak, semi-strong, and strong form of EMH, to conclude that, even after more than half a century of research, financial literature has not reached a consensus on the presence or absence of the validity of this hypothesis.

scholarly journals Behavior of financial markets efficiency during the financial market crisis: 2007 – 2009

2014 ◽  
Vol 11 (2) ◽  
pp. 473-487 ◽  
Author(s):  
Ronald Henry Mynhardt ◽  
Alexey Plastun ◽  
Inna Makarenko
Keyword(s):  
Financial Markets ◽  
Market Efficiency ◽  
Financial Market ◽  
Hurst Exponent ◽  
Developed Countries ◽  
Market Analysis ◽  
Financial Market Crisis ◽  
Financial Market Analysis

This paper examines the behavior of financial markets efficiency during the recent financial market crisis. Using the Hurst exponent as a criterion of market efficiency we show that level of market efficiency is different for pre-crisis and crisis periods. We also classify financial markets of different countries by the level of their efficiency and reaffirm that financial markets of developed countries are more efficient than the developing ones. Based on Ukrainian financial market analysis we show the reasons of inefficiency of financial markets and provide some recommendations on their solution and thus improving the efficiency.

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