scholarly journals SEMI-STRONG FORM EFFICIENCY OF NIFTY 50 INDEX: AN EMPIRICAL TESTING IN RELATION TO RIGHTS ISSUE ANNOUNCEMENTS

2019 ◽  
pp. 192-196
Author(s):  
Mr.Ch Naveen ◽  
Prof. G. Satyanarayana
Keyword(s):  
Event Study ◽  
Stock Price ◽  
Weak Form ◽  
Efficient Market Hypothesis ◽  
Strong Form ◽  
Stock Index ◽  
Efficient Market ◽  
Price Series ◽  
Study Methodology ◽  
Rights Issue

Stock price series is a wandering one. Investors put their money after analysing the behavior of the price using technical or fundamental analysis. The assumption behind these models is that the stock price behaviour is quite orderly and not random. Many researchers questioned this assumption and argued that the stock price behaviour is random. Efficient market hypothesis is explained in three levels. Weak form, semi-strong forma and strong form. With this background an attempt was made to anlayse the efficiency of the leading stock index in India i.e. Nifty 50 Index in weak-form in relation to rights issue. In this study rights issue of Nifty 50 companies announced during 2009-2018 were considered and event study methodology was applied to examine the randomness. The results of the study revealed that the Nifty 50 Index is not efficient in semi-strong form. KEY WORDS: Efficient Market hypothesis, Rights issue, event study, Nifty 50 index.

scholarly journals Efficient Market Hypotheses Controversy and Nigerian Stock Exchange Relations

2020 ◽  
pp. 1-13
Keyword(s):  
Stock Market ◽  
Stock Price ◽  
Stock Exchange ◽  
Unit Root Test ◽  
General Meeting ◽  
Weak Form ◽  
Efficient Market Hypothesis ◽  
Annual Data ◽  
Efficient Market ◽  
Price Series

This study; Nigerian Stock Exchange and Efficient Market Hypothesis was done using All Share Index (ASI) with daily data from January 02, 2014 to May 20, 2019 (1333 observations) and annual data from 1985 to 2018 (34 observations) collected from the Nigeria Stock Market fact books. The study employed three analytical methods namely the unit root test, GARCH Model and the Autocorrelation cum patial autocorrelation method for the assessment of weak form hypothesis on the daily and annual all share index in the Nigerian Stock market. The results of these evaluations indicated a significant relationship between the price series and their lagged values implying that stock price series do not follow a random walk process in Nigerian stock market. Thus, affirming that the Nigeria Stock Exchange is not efficient in weak form. In the light of this, the researchers recommend that the supervisory and regulatory authorities should strengthen the Nigerian Stock Market through palliating its regulations pertaining to transparency of information management rules such as market barriers and stringent listing requirement, publication of accounts, notices of annual general meeting and the like.

scholarly journals Efficient Market Hypotheses Controversy and Nigerian Stock Exchange Relations

2020 ◽  
Vol 2 (1) ◽  
pp. 1-13
Author(s):  
Chukwu Agwu Ejem ◽  
Udochukwu Godfrey Ogbonna ◽  
Godwin Chigozie Okpara
Keyword(s):  
Stock Market ◽  
Stock Price ◽  
Stock Exchange ◽  
Unit Root Test ◽  
General Meeting ◽  
Weak Form ◽  
Efficient Market Hypothesis ◽  
Annual Data ◽  
Efficient Market ◽  
Price Series

This study; Nigerian Stock Exchange and Efficient Market Hypothesis was done using All Share Index (ASI) with daily data from January 02, 2014 to May 20, 2019 (1333 observations) and annual data from 1985 to 2018 (34 observations) collected from the Nigeria Stock Market fact books. The study employed three analytical methods namely the unit root test, GARCH Model and the Autocorrelation cum patial autocorrelation method  for the assessment of weak form hypothesis on the daily and annual all share index in the Nigerian Stock market. The results of these evaluations indicated a significant relationship between the price series and their lagged values implying that stock price series do not follow a random walk process in Nigerian stock market. Thus, affirming that the Nigeria Stock Exchange is not efficient in weak form.  In the light of this, the researchers recommend that the supervisory and regulatory authorities should strengthen the Nigerian Stock Market through palliating its regulations pertaining to transparency of information management rules such as market barriers and stringent listing requirement, publication of accounts, notices of annual general meeting and the like. JEL Classification: C1, C4, E6, G1

An Empirical Study on Efficient Market Hypothesis with reference to FMCG Sector

GIS Business ◽  
2020 ◽  
Vol 15 (1) ◽  
pp. 109-126
Author(s):  
Nitin Tanted ◽  
Prashant Mistry
Keyword(s):  
Stock Prices ◽  
Stock Price ◽  
Abnormal Returns ◽  
Weak Form ◽  
Efficient Market Hypothesis ◽  
Controversial Issues ◽  
Efficient Market ◽  
Price Movements ◽  
Run Test ◽  
Stock Price Movements

One of the highly controversial issues in the area of finance is “Efficient Market Hypothesis”. Efficient Market Hypothesis states that, “In an efficient market, all available price information is reflected in the stock prices and it is not possible to generate abnormal returns compared to other investors.” A lot of studies conducted previouslyto test the Efficient Market Hypothesis, confirmed the theory until recent years, when some academicians found it to be non-applicable in financial markets. According to them, it is possible to forecast the stock price movements using Technical Analysis. The results of various studies have been inconclusive and indefinite about the issue. This study attempted to test the efficiency of FMCG Sector stocks in India in its weak form. For the study, closing prices of top 10 stocks from Nifty FMCG index has been taken for the 5-year period ranging from 1st October 2014 to 30th September 2019. Wald-Wolfowitz Run test has been used to test the haphazard movements in the stock price movements. The results indicated that FMCG sector stocks does support the Efficient Market Hypothesis and exhibit efficiency in its weak form. Hence, it is not possible to accurately predict the price movements of these stocks.

scholarly journals Entry, exit, ownership structure and the efficient market hypothesis: a case study of the Kuala Lumpur stock exchange

2008 ◽  
Vol 5 (4) ◽  
pp. 315-325
Author(s):  
Vglingam Sivalingam
Keyword(s):  
Stock Exchange ◽  
Theoretical Perspective ◽  
Complete Information ◽  
Weak Form ◽  
Efficient Market Hypothesis ◽  
Strong Form ◽  
Barriers To Entry ◽  
Kuala Lumpur ◽  
Efficient Market ◽  
Competitive Model

The objective of this paper is to provide a new theoretical perspective on testing the Efficient Market Hypothesis in the Kuala Lumpur Stock Exchange (KLSE). Previous studies have shown that the KLSE is weak form efficient or at most semi strong form efficient. However, an adequate explanation has not been provided as to why the KLSE is not strong form efficient. The paper suggests that this is because the KLSE does not approximate the neoclassical competitive model in terms of entry, pricing and exit. There are barriers to entry and exit and hence to the free flow of accurate and complete information in the KLSE. The securities offered for sale are also underpriced as there is extensive government intervention to ensure adequate returns to investors. The market is also dominated by large government owned and family owned conglomerates. This together with a segmented market for three classes of investors, that is, the bumiputras, the other Malaysians and foreigners ensures that resources are not allowed to flow to their most value users and hence prices are not competitively set. The paper ends by noting that the KLSE is moving from a government dominated exchange for securities to a market system as a result of recent reforms and policy changes

scholarly journals Testing Weak Form of Stock Market Efficiency at The Indonesia Sharia Stock Index

2019 ◽  
Vol 10 (1) ◽  
pp. 17
Author(s):  
Isnaini Nuzula Agustin
Keyword(s):  
Time Series ◽  
Stock Price ◽  
Moving Average ◽  
Arima Model ◽  
Weak Form ◽  
Efficient Market Hypothesis ◽  
Stock Index ◽  
Time Series Modelling ◽  
Current Price ◽  
Run Test

AbstractEfficient Market is the market where all traded securities prices reflects all available information. Market Efficient Hypotesis in the Weak Form stated that past stock price movement incorporated with current securities’s prices, thus it can be used to predicting the current price or return. The objective of this research is to examine the weak form of Efficient Market Hypothesis (EMH) in Indonesia Sharia Stock Index (ISSI) over the period of January 3rd2017 -February 8th 2019. To Examine the EMH, some appropriate tests are developed, these are: Run Test, Autocorrelation Test, Autoregressive Integrated Moving Average (ARIMA), and Paired Sample t-test. The result findings showing that ISSI is not efficient in the weak form during the period of the study. Moreover, in accordance with time series modelling result, the fitted model is ARIMA (1,1,1) with accuracy level of 78%. This result proved that ARIMA model successfully and accurately in forecasting ISSI indices. It can be implied that the historical stock index data in the past still described the stock index information in the future. Thus, technical analysis is still feasible to do as the guide for investors in conducting transactions in the capital market.AbstrakPasar yang efisien adalah pasar dimana semua harga sekuritas yang diperdagangkan telah mencerminkan semua informasi yang tersedia. Teori pasar efisien bentuk lemah menyatakan bahwa perubahan harga masa lalu tidak berhubungan dengan harga sekuritas sekarang, sehingga tidak dapat digunakan untuk memprediksi harga atau return dari sekuritas. Penelitian ini bertujuan untuk melakukan pengujian hipotesis pasar efisien bentuk lemah pada Indeks Saham Syariah Indonesia (ISSI). Data diambil pada periode 3 Januari 2017 – 8 Februari 2019. Pada tahap awal penelitian, Run test dan Autocorrelation test dilakukan untuk melihat apakah pasar efisien bentuk lemah berlaku pada ISSI. Selanjutnya dilakukan pembentukan pemodelan time series ARIMA untuk melihat teknik prediksi yang sesuai untuk memprediksi Indeks Saham ISSI. Hasil Run test dan Autocorrelation test menunjukkan bahwa hipotesis pasar efisien bentuk lemah tidak terbukti. Pada pembentukan model ARIMA, terlihat bahwa model yang sesuai adalah ARIMA (1,1,1) menghasilkan tingkat akurasi sebesar 78%. Hal ini membuktikan bahwa model ARIMA berhasil dan akurat digunakan untuk memprediksi Indeks Harga Saham ISSI. Oleh karena itu, analisis teknikal masih dapat digunakan oleh investor untuk menjadi pedoman dalam melakukan transaksi perdagangan di pasar modal.

scholarly journals Testing of weak form of efficient market hypothesis: evidence from the Bahrain Bourse

2017 ◽  
Vol 14 (2) ◽  
pp. 376-385 ◽  
Author(s):  
Iqbal Thonse Hawaldar ◽  
Babitha Rohit ◽  
Prakash Pinto
Keyword(s):  
Random Walk ◽  
Stock Price ◽  
Goodness Of Fit ◽  
Weak Form ◽  
Efficient Market Hypothesis ◽  
Goodness Of Fit Test ◽  
Efficient Market ◽  
Share Prices ◽  
The Individual ◽  
Run Test

Efficient market hypothesis (EMH) states that financial markets are “informationally efficient”, implying that current prices fully reflect all available information. The present study aims at testing the weak form of market efficiency of the individual stocks listed on the Bahrain Bourse for the period 2011 to 2015. Weak form of EMH is tested using the Kolmogorov-Smirnov goodness of fit test, run test and autocorrelation test. The K-S test result concludes that in general the stock price movement does not follow random walk. The results of the runs test reveals that share prices of seven companies do not follow random walk. Autocorrelation tests reveal that share prices exhibit low to moderate correlation varying from negative to positive values. As the study shows mixed results, it is difficult to conclude the weak form of efficiency of Bahrain Bourse.

Robust Approach to Verifying the Weak Form of the Efficient Market Hypothesis

2011 ◽  
Author(s):  
Luboš Střelec ◽  
Theodore E. Simos ◽  
George Psihoyios ◽  
Ch. Tsitouras ◽  
Zacharias Anastassi
Keyword(s):  
Weak Form ◽  
Efficient Market Hypothesis ◽  
Efficient Market ◽  
Robust Approach

Market reactions to the inclusion of people with disabilities

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Claudia Araceli Hernández González
Keyword(s):  
Event Study ◽  
Stock Prices ◽  
Stock Price ◽  
Abnormal Returns ◽  
People With Disabilities ◽  
Market Reactions ◽  
Content Type ◽  
Study Methodology ◽  
Research Advance ◽  
The Impact

PurposeThis study aims to provide evidence of market reactions to organizations' inclusion of people with disabilities. Cases from financial journals in 1989–2014 were used to analyze the impact of actions taken by organizations to include or discriminate people with disabilities in terms of the companies' stock prices.Design/methodology/approachThis research is conducted as an event study where the disclosure of information on an organization's actions toward people with disabilities is expected to impact the organization's stock price. The window of the event was set as (−1, +1) days. Stock prices were analyzed to detect abnormal returns during this period.FindingsResults support the hypotheses that investors value inclusion and reject discrimination. Furthermore, the impact of negative actions is immediate, whereas the impact of positive actions requires at least an additional day to influence the firm's stock price. Some differences among the categories were found; for instance, employment and customer events were significantly more important to a firm's stock price than philanthropic actions. It was observed that philanthropic events produce negative abnormal returns on average.Originality/valueThe event study methodology provides a different perspective to practices in organizations regarding people with disabilities. Moreover, the findings in this research advance the literature by highlighting that organizations should consider policies and practices that include people with disabilities.

Testing the weak form of efficient market hypothesis for socially responsible and Shariah indexes in the USA

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Abbas Khan ◽  
Muhammad Yar Khan ◽  
Abdul Qayyum Khan ◽  
Majid Jamal Khan ◽  
Zia Ur Rahman
Keyword(s):  
Stock Prices ◽  
Arima Model ◽  
Weak Form ◽  
Efficient Market Hypothesis ◽  
Future Price ◽  
Short Term ◽  
Socially Responsible ◽  
Efficient Market ◽  
Content Type ◽  
The Us

Purpose By testing the weak form of efficient market hypothesis (EMH) this study aims to forecast the short-term stock prices of the US Dow and Jones environmental socially responsible index (SRI) and Shariah compliance index (SCI). Design/methodology/approach This study checks the validity of the weak form of EMH for both SCI and SRI prices by using different parametric and non-parametric tests, i.e. augmented Dickey-Fuller test, Philip-Perron test, runs test and variance ratio test. If the EMH is invalid, the research further forecasts short-term stock prices by applying autoregressive integrated moving average (ARIMA) model using daily price data from 2010 to 2018. Findings The research confirms that a weak form of EMH is not valid in the US SRI and SCI. The historical data can predict short-term future price movements by using technical ARIMA model. Research limitations/implications This study provides better guidance to risk-averse national and international investors to earn higher returns in the US SRI and SCI. This study can be extended to test the EMH of Islamic equity in the Middle East and North Africa region and other top Islamic indexes in the world. Originality/value This study is a new addition to the existing literature of equity investment and price forecasting by comparing and investigating the market efficiency of two interrelated US SRI and SCI.

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.

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