Investment Perspective According to Behavioral Finance Science

2010 ◽  
Vol 16 (58) ◽  
pp. 1
Author(s):  
Sa’ad Al-Anizi
Keyword(s):  
Human Behavior ◽  
Behavioral Finance ◽  
Human Action ◽  
Security Market ◽  
Market Theory ◽  
Efficient Market ◽  
Financial Decisions ◽  
Security Markets ◽  
Efficient Market Theory ◽  
Financial Awareness

The first thing that comes to mind is the highly important question of whether there were some effects of human behavior and its fluctuations on the theories of the efficient market and the contemporary investment portfolio. According to what has been said by the proponents of these two theories; when the optimal return is realized, the efficiency of the market is achieved in terms of perfect information on prices and risk that supposed to be predetermined in a rational way. he other question that imposed here is “at what time people should be rational in their investments in the security markets ?”. This means that investors are rational for their efforts devoted to utility maximization, which are perceived as a result of investing their wealth in the best possible manner. Then, can those two questions be achieved in practice? Many ontological aspects are influenced in their relations by emotions and feelings more than by money as a financial resource . Investors may take irrational financial decisions because of the dominance of those emotions and feelings compared with what investors do toward other actions in their public and special daily life. Understanding investors financial awareness without taking into account the human action is considered as an outstanding problem which can be assimilated as an attempt to sail with compass, but without guided maps. The importance and necessity of human psychological factor are arise when we are talking about investing common stocks in the security market. Then, this means that issues directing investment decisions of individuals in financial assets whether they were stocks or bonds, can be only interpreted with referring to principles of human behavior. Absolutely there is no exaggeration if we said that the market in general be advanced, lagged behind , prospected , and crept when making collective  decisions in buying securities through viewing  psychological factors which capture individuals behaviors after information being collected and analyzed. The validity of an efficient market theory has been widely accepted by its proponents for a long time lasting almost a century so that any research on  the psychological aspects of a security market encountered by objection till a close time of ten years .  

scholarly journals Martingales, Efficient Market Hypothesis and Kolmogorov’s Complexity Theory

2011 ◽  
Vol 2 (6) ◽  
pp. 252-258
Author(s):  
Amaresh Das
Keyword(s):  
Time Series ◽  
Financial Markets ◽  
Stock Returns ◽  
Complexity Theory ◽  
Efficient Market Hypothesis ◽  
Market Theory ◽  
Efficient Market ◽  
Price Changes ◽  
Efficient Market Theory ◽  
Theoretical Considerations

Efficient market theory states that financial markets can process information instantly. Empirical observations have challenged the stricter form of the efficient market hypothesis (EMH). These empirical observations and theoretical considerations show that price changes are difficult to predict if one starts from the time series of price changes. This paper provides an explanation in terms of algorithmic complexity theory of Kolmogorov that makes a clearer connection between the efficient market hypothesis and the unpredictable character of stock returns.

scholarly journals Does The Efficient Market Theory In The Weak Form Exist? Evidence From Indonesia

2021 ◽  
Vol 21 (2) ◽  
pp. 183
Author(s):  
Bram Hadianto ◽  
Hendrik Hendrik ◽  
Trishya Yuwana
Keyword(s):  
Composite Index ◽  
Weak Form ◽  
Sufficient Information ◽  
Market Theory ◽  
Efficient Market ◽  
Market Index ◽  
Efficient Market Theory ◽  
Thin Market ◽  
Efficiency Theory ◽  
Daily Returns

In the weak-form market efficiency theory, investors cannot predict the movement of all prices because of randomness. This circumstance happens because of a quick market reaction to new information. Conversely, suppose the market is not efficient in this shape; in that case, the investors can obtain an abnormal return. One of the reasons is the thin market, where many inactive stocks to be traded are available. Based on these issues, this research intends to examine this theory by employing runs testing on the daily returns of the Indonesia Composite Index (ICI) between January 2014 and December 2018 for each year and a whole. Once performing this test, this research demonstrates that the daily returns of the ICI are random for both situations. By denoting these facts, this research concludes that the capital market in Indonesia is efficient in a weak form and experiences a decrease in the thin level, reflected by the escalation in trading frequency, volume, and value, as well as the number of dynamic shares transacted. This research suggests that investors without sufficient information should utilize the service of the securities analysts to select the stocks they buy and sell to get the capital gain. Keywords – an efficient market in the weak form; market index return; runs test; thin market

scholarly journals EMT and Political Reform Effects on Chinese Markets: A Literature Review

2021 ◽  
Author(s):  
Luigi Gallo
Keyword(s):  
Literature Review ◽  
Financial Markets ◽  
Political Reform ◽  
Market Theory ◽  
Efficient Market ◽  
Efficient Market Theory ◽  
Chinese Markets ◽  
Analyse Data ◽  
Over Time

The objective of this paper is to analyse the literature on and the evolution of the analysis of Chinese financial markets over time. Seven papers, based mainly on Efficient Market Theory (Fama, 1998) and the correlation between different markets, published in the years 1999-2019, have been selected and compared as they analyse data taken from the Shenzhen and Shanghai markets.

Emotional Finance Plays an Important Role in Investment Decisions

2019 ◽  
pp. 89-103 ◽  
Author(s):  
Sarika Keswani
Keyword(s):  
Human Behavior ◽  
Behavioral Finance ◽  
Significant Role ◽  
Positive Emotions ◽  
Investment Decisions ◽  
Psychological Theory ◽  
Decision Makers ◽  
Business Decisions ◽  
Financial Decisions ◽  
Self Confidence

Most of the investors focus on human emotions not expressed openly while making investment decisions. Emotions have a powerful position in making investment decisions. They drive human behavior that is consistent with economic predictions while making investments. Emotions play a significant role while making decisions on investments just like any other business decisions. Behavioral finance tries to combine behavioral and cognitive psychological theory with conventional economics and finance to provide justifications for why people make irrational financial decisions. The aim of this chapter is to understand whether emotional phases affect investors' decisions in different investment situations basing on levels of uncertainty. Positive emotions like self-confidence, challenge, and hope increase the decision-makers tendency to exaggerate the commitment, and negative emotions, namely embarrassment and strain, do not.

The dynamic interaction between investor attention and green security market: an empirical study based on Baidu index

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Yang Gao ◽  
Yangyang Li ◽  
Yaojun Wang
Keyword(s):  
Behavioral Finance ◽  
Time Window ◽  
Error Variance ◽  
Dynamic Interaction ◽  
Security Market ◽  
Practical Application ◽  
Investor Attention ◽  
Content Type ◽  
Security Markets ◽  
Green Finance

PurposeThis paper aims to explore the interaction between investor attention and green security markets, including green bonds and stocks.Design/methodology/approachThis study takes the Baidu index of “green finance” as the proxy for investor attention and constructs several generalized prediction error variance decomposition models to investigate the interdependence. It further analyzes the dynamic interaction between investor attention and the return and volatility of green security markets using the rolling time window.FindingsThe empirical analysis and robustness test results reveal that the spillovers between investor attention and the return and volatility of the green bond market are relatively stable. In contrast, the spillover level between investor attention and the green stock market displays significant time-varying and asymmetric effects. Moreover, the volatility spillover between investor attention and green securities is vulnerable to major financial events, while the return spillover is extremely sensitive to market performance.Originality/valueThe conclusion further expands the practical application and theoretical framework of behavioral finance in green finance and provides a new reference for investors and regulators. Besides, this study also lays a theoretical basis for investors to focus on the practical application of volatility prediction and risk management in green securities.

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