scholarly journals Test of Weak Efficiency on Casablanca Stock Market, Chaotic Dynamic and Long Memory

2020 ◽  
pp. 27-41
Author(s):  
El Mehdi Falloul
Keyword(s):  
Lyapunov Exponent ◽  
Stock Market ◽  
Long Memory ◽  
Chaotic Dynamic ◽  
Weak Form ◽  
Weak Efficiency ◽  
Market Theory ◽  
Efficient Market Theory ◽  
Econometric Tests ◽  
Weak Form Efficiency

This paper aim to investigate the weak form efficiency of the Casablanca Moroccan stock market. After a brief explanation of the efficient market theory developped by Eygene Fama, we have made the whole classical econometric tests used to test the weak form efficiency, this is made by using MASI index that represents the whole stocks in Casablanca stock market. At the end of this study, we have rejected the hypothesis of efficience of Casablanca Stock market, and we have deduced that MASI is caracterised aby a choatic dynamic that we have cvalidated by calculation of Lyapunov exponent, finally and in order to judge the model that represent the MASI we have modeled MASI index using the process ARFIMA (p,dq) and we have deduced that MASI is caracterized by a long memory.

scholarly journals Random Walk Investigation in Indian Market with special reference to S&P Nifty – Fifty Stocks

2015 ◽  
Vol 4 (4) ◽  
pp. 52-61
Author(s):  
Tamilselvan Manickam ◽  
R Madhumitha
Keyword(s):  
Stock Market ◽  
Stock Exchange ◽  
Abnormal Returns ◽  
Empirical Support ◽  
Weak Form ◽  
Indian Market ◽  
Price Series ◽  
Stock Market Efficiency ◽  
Indian Stock Market ◽  
Weak Form Efficiency

The competence of a financial system is entirely depending upon the stock market efficiency. The gradual growth of equity investor’s participation is inevitable to enrich the overall growth of emerging economies.Hence the necessity is felt to provide an empirical support to the investing community. For the purpose, this study attempts to examine the weak-form efficiency of Indian stock market – National Stock Exchange (NSE). The study has used the daily closing price of the Nifty fifty stocks from 3rdJanuary 2011 to 24thApril 2015. To test the weak form efficiency both parametric and non-parametric tests called Autocorrelation, Augmented Dicky Fuller test, and Runs Test were performed.  The study reveals that 39 stocks of NSE-Nifty Fifty are found to be weak form inefficient, so that the investors can formulate trading strategies to gain abnormal returns. The Index and 10 stocks are found to be weak form efficient during the study period since the price series found to be autocorrelation existence.

scholarly journals Efficient Market Hypotheses of Nepalese Stock Market

Pravaha ◽  
2020 ◽  
Vol 26 (1) ◽  
pp. 187-198
Author(s):  
Shanker Dhodary
Keyword(s):  
Random Walk ◽  
Stock Market ◽  
Insider Trading ◽  
Research Work ◽  
Weak Form ◽  
Efficient Market ◽  
Parametric Test ◽  
Auto Correlation ◽  
Closing Price ◽  
Weak Form Efficiency

The purpose of this paper is to examine the random walk hypothesis (RWH) by testing the weak-form efficiency in the Nepalese capital market. Descriptive, correlation and causal comparative research design has been used for analyzing the variables and different phenomenon. This research has been prepared only with the help of secondary data. Closing price of company has been collected and analyzed for the period 2015/16-2019/20. Thus researcher tried to analyze the market efficiency with the help of five years data (daily closing price).There are altogether around 233 companies listed in NEPSE. So to make this research feasible and simple researcher has selected only 10 companies from the NEPSE by using purposive sampling technique. In course of selecting company researcher has tried to incorporate only financial sectors as commercial banks, finance companies, insurance, and microfinance companies but development bank has not been taken as sample due to same nature of commercial bank. Researcher examined the weak form efficiency of the Nepal stock exchange (NEPSE) using auto correlation test (parametric test) and run test (non-parametric test) for the period of 2015/16-2019/20. Mainly this research work tested the efficient market hypothesis of Nepalese stock market with the help of daily closing price of 10 Sample Company of different sectors. The market is inefficient in the weak form implies that the NEPSE does not follow a random walk. This means that the NEPSE provides an opportunity for out- performance by skillful managers and investment specialists. Auto correlation exists in price of stock evident that there is high level of dependency of price of stock with the previous ones. It will be easy for speculator and trader to exploit the market and gain handsome profit from the market. All investor are not assumed to be rational in inefficient market, most of the people say investor are investing on the basis of market rumor. Market may be inefficient due the asymmetric of information and insider trading.

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 Weak form market efficiency test of Bangladesh Stock Exchange: an empirical evidence from Dhaka Stock Exchange and Chittagong Stock Exchange

2019 ◽  
Vol 21 (3) ◽  
pp. 285
Author(s):  
Shafir Zaman
Keyword(s):  
Stock Market ◽  
Market Efficiency ◽  
Empirical Evidence ◽  
Stock Markets ◽  
Stock Exchange ◽  
Investment Decision ◽  
Weak Form ◽  
Efficiency Test ◽  
Non Parametric ◽  
Weak Form Efficiency

Investors need to have an idea about stock market before making investment whether the stock markets are efficient or not to take investment decision in stock market. For that reason, measurement of market efficiency of stock market bears significance to investors. Bearing it in mind, the study is undertaken to find out the existence of weak form efficiency prevails in largest stock market of Bangladesh. In order to get perfect result Parametric and Non Parametric tests were conducted of DSE & CSE for 2013 to 2017. It was found from all tests that Dhaka and Chittagong Stock exchange are not weak form efficient. Therefore, the result of the study will act as a helping hand to researchers to find out the reason of Bangladesh stock market not being weak form efficient as well as providing measurement to make the stock market weak form efficient.

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