scholarly journals Analisis Dampak Shut Down US Goverment Tahun 2018 Pada Bursa Efek Indonesia

2020 ◽  
Vol 13 (1) ◽  
pp. 1-11
Author(s):  
Choirun Nisful Laili
Keyword(s):  
Stock Returns ◽  
Event Study ◽  
Stock Exchange ◽  
Abnormal Returns ◽  
Paired Sample ◽  
Cumulative Abnormal Returns ◽  
The Us ◽  
Us Government ◽  
Before And After

The purpose of this study was to determine the differences in returns, abnormal returns, and cumulative abnormal returns of shares before and after the US govermet 2018 shut down event. The object of research is companies that belong to the LQ-45 stock group on the Indonesia Stock Exchange. Research uses the type of event study. The results of the study using paired sample t-tests showed no differences in stock returns and abnormal returns for periods before and after the 2018 US government shut down event. For cumulative abnormal returns before and after the 2018 US government shut down event, differences were found.

scholarly journals ANALISIS PERBEDAAN HARGA SAHAM, RETURN SAHAM, DAN ABNORMAL RETURN SEBELUM DAN SESUDAH STOCK SPLIT PADA PERUSAHAAN HIGH PROFILE DAN LOW PROFILE YANG TERDAFTAR DI BURSA EFEK INDONESIA

2021 ◽  
Vol 11 (1) ◽  
pp. 42
Author(s):  
Pita Rahmawati ◽  
Jawoto Nusantoro ◽  
Gustin Padwa Sari
Keyword(s):  
Stock Returns ◽  
Stock Prices ◽  
Abnormal Returns ◽  
T Test ◽  
Paired Sample ◽  
High Profile ◽  
Normality Test ◽  
Low Profile ◽  
Stock Split ◽  
Before And After

This research aims to determine whether there are differences in stock prices, stock returns and abnormal returns before and after a stock split in high profile and low profile companies. The research period used in this study was on 2016-2018. The research was analyzed in quantitative method by using a purposive sampling method. Based on the sampling criteria, 40 companies were selected as research samples. Kolmogorov Smirnov One Sample test was used for the normality test. After the normality test was carried out, the data was processed using the two paired-sample difference test. The t-test (paired sample t-test) was used if data were normally distributed but if it was not normally distributed the Wilcoxon Signed Rank test would be used. Hypothesis testing results showed that (1) there are differences in stock prices whether before and after a stock split in high profile companies (2) there are differences in stock prices whether before and after the stock split in low profile companies (3) there are differences in stock returns whether before and after a stock split in the company high profile (4) there is no difference in stock returns whether before and after the stock split in low profile companies (5) there is no difference in abnormal returns whether before and after the stock split in high profile companies (6) there is no difference in abnormal returns whether before and after the stock split in low profile companies (7) there are differences in stock prices after a stock split in high profile companies and low profile (8) there is no difference in stock returns whether before and after the stock split in high profile and low profile companies (9) there is no difference in abnormal stock returns whether before and after a stock split at high profile and low profile companies.

scholarly journals Do Regional Election and Presidential Election Affect Stock Exchange? An Event Study in the Indonesian Stock Exchange

2021 ◽  
Vol 7 (1) ◽  
pp. 71-80
Author(s):  
Khanifah Khanifah ◽  
Agus Triyani ◽  
Suhita Whini Setyahuni
Keyword(s):  
Event Study ◽  
Capital Market ◽  
Trading Volume ◽  
Stock Exchange ◽  
Abnormal Returns ◽  
T Test ◽  
Democratic Politics ◽  
Paired Samples ◽  
Before And After ◽  
Regional Elections

The 2018 simultaneous regional election in Indonesia is something new in the events of democratic politics in Indonesia. The events of the 2018 simultaneous regional election is one of the important events in 2018 that can cause a reaction of capital market to these events. This study aims to examine how the capital market reacts to the simultaneous regional elections in 2018 and presidential elections in 2019, by looking at the differences in the preceding and following periods based on 2 variables, namely abnormal return and trading volume activity. The sample in this study were 30 companies listed in the Indonesian Stock Exchange during 30 periods from February through July 2018. Research Methode This study used an event study. One paired samples T test was used as a technique analysis. The means of each variable within eleven days period was compared. The period of observation is five days before the event, five days after the event, and one day on event day. Based on the results of the parametric statistical calculations, the paired sample t-test showed that there was no difference between the level of abnormal returns before and after the 2018 simultaneous regional elections. On the other hand, there was a difference between trading volume of activity before and after the 2018 simultaneous regional elections.

scholarly journals Effects of changes in stock market index composition on stock returns: event study methodology on Zagreb Stock Exchange

2019 ◽  
Vol 5 (1) ◽  
pp. 43-54
Author(s):  
Tihana Škrinjarić
Keyword(s):  
Stock Market ◽  
Stock Returns ◽  
Event Study ◽  
Stock Exchange ◽  
Abnormal Returns ◽  
Stock Market Index ◽  
Market Index ◽  
Study Methodology ◽  
Composition Changes ◽  
Event Study Methodology

AbstractThis paper observes the short-run effects of stock market index composition changes on stock returns on the Zagreb Stock Exchange (ZSE). In that way, event study methodology is employed in order to estimate abnormal returns and compare them amongst three subsets of stocks: those leaving the market index, those entering it, and constantly included stocks. The research included 14 regular and extraordinary revisions of the market index in the period from January 2nd, 2015 until March 21st, 2018. The results have confirmed two research hypotheses: stock exclusions from the market index have a negative effect on stock returns on the ZSE, which is consistent with the price pressure hypothesis; and there exist asymmetric effects of index composition changes on stock returns. This is the first study of this kind on the Croatian stock market, thus more questions need to be answered in future research.

scholarly journals DAMPAK COVID-19 TERHADAP ABNORMAL RETURN DAN VOLUME PERDAGANGAN SAHAM

2022 ◽  
Vol 18 (1) ◽  
pp. 160-181
Author(s):  
Elvina Cahya Suryadi ◽  
Nungky Viana Feranita
Keyword(s):  
Natural Disaster ◽  
Event Study ◽  
Abnormal Return ◽  
Trading Volume ◽  
Quantitative Research ◽  
Stock Exchange ◽  
Abnormal Returns ◽  
Volume Activity ◽  
Before And After ◽  
Disaster Event

The COVID-19 pandemic is a non-natural disaster that has a huge impact around the world. This research is a quantitative research with event study method. The purpose of this research is to test the capital market reaction by looking at abnormal returns and trading volume activity before and after the COVID-19 non-natural disaster. The event day in this study was April 13rd, 2020 when the Presidential Decree was issued regarding the designation of COVID-19 as a national disaster. Using purposive sampling method, the sample of this study were 27 companies engaged in the hotel, restaurant, and tourism sub-sectors listed on the Indonesia Stock Exchange. The event period is 11 days, namely 5 days before the event, 1 day at the time of the event and 5 days after the event. Data analysis using t-test and wilxocon signed ranks test. The results of this study are: 1) there is no abnormal return during the event period, 2) there is no difference in the average abnormal return before and after the COVID-19 non-natural disaster event, 3) there is no difference in the average trading volume activity before and after the COVID-19 non-natural disaster event and after the COVID-19 non-natural disaster event. Keywords: Event Study, Abnormal Return, Trading Volume Activity, COVID-19.

scholarly journals IPO Intra Industry Effects on Peer Firm's Earnings, Composition and Stock Returns

2021 ◽  
Vol VI (II) ◽  
pp. 41-48
Author(s):  
Muhammad Irfan Khadim ◽  
Samreen Fahim Babar
Keyword(s):  
Stock Returns ◽  
Stock Exchange ◽  
Time Lag ◽  
Abnormal Returns ◽  
Significance Test ◽  
Industry Effects ◽  
Cumulative Abnormal Returns ◽  
Long Run ◽  
Short Run

The present study is conducted to see how an IPO event affects the existing firm's performance within the same industry. For this purpose, 88 IPO firms were examined from Pakistan Stock Exchange (PSX) from 1998-2016. IPO is examined from three major perspectives IPO proceeds, initial returns and time Lag between IPO listing date and IPO subscription. The study uses Buy and Hold Abnormal Returns (BHAR) and Cumulative Abnormal Returns (CAR) to calculate competitor's abnormal returns. To calculate the operating performance of competitors, the Wilcoxon significance test was applied. IPO intra-industry effects are significant in the long run, whereas insignificant results are shown in the short run. In addition, IPO proceeds and abnormal returns are significant but negatively related to competitors' stock returns (long term). Moreover, Herfindahl Hirschman Index (HHI) finds IPO improves competitiveness in the industry environment. This present study is an important one from an emerging economy perspective.

Investors' Reactions to the Announcement of New Constituents of BIST Sustainability Index

2017 ◽  
pp. 270-289 ◽  
Author(s):  
Levent Çıtak ◽  
Veli Akel ◽  
Ersan Ersoy
Keyword(s):  
Stock Returns ◽  
Event Study ◽  
Abnormal Returns ◽  
Event Window ◽  
Sustainability Index ◽  
Cumulative Abnormal Returns ◽  
Significant Difference ◽  
Index Stock

This study investigates the reaction of investors to the announcement of firms included in BIST Sustainability Index. Stock returns of BIST 50 firms, which are also constituents of BIST Sustainability Index, with those of BIST 50 firms that could not qualify for inclusion in BIST Sustainability Index, are compared. Based on mean/median tests, no significant difference between various returns of two groups of firms is found. Except for interval 0 to +4 days, the findings of event study indicates no significant abnormal returns for BIST Sustainability Index Constituents in the event window of 10 days surrounding the announcement day, but indicates significant positive cumulative abnormal returns for intervals 0 to +4 days, 0 to +5 days, 0 to +7 days, 0 to +8 days, 0 to +9 days and 0 to +10 days, which is an indication that investors valued the BIST Sustainability Index Constituents a few days after the announcement by investing in the stocks of these firms.

scholarly journals Event Study on the Reaction of Stock Returns to Acquisition News

2017 ◽  
Vol 4 (1) ◽  
pp. 33 ◽  
Author(s):  
Fotoh Lazarus Elad ◽  
Nko Solange Bongbee
Keyword(s):  
Stock Returns ◽  
Event Study ◽  
Null Hypothesis ◽  
Stock Exchange ◽  
Abnormal Returns ◽  
Critical Value ◽  
Market Model ◽  
Test Statistics ◽  
Publicly Traded ◽  
Simple Regression

This study examines the reaction of stock returns to acquisition news. A data of 51 observations of acquiring companies with publicly traded shares on the London Stock Exchange (FTSE100) is used over a period, from July 2012 to May 2013 with an estimation period [-100, -10] and test period [-5, +5]. The market model is applied here in order to predict future stock returns and the use of the simple regression to get the parameters of the regression equation. With this a test statistics obtained on average, is significantly positive and greater than the critical value. Therefore, the event of acquisition does appear to be related significantly to the abnormal returns and the null hypothesis being rejected.

The announcement and implementation reaction to China's margin trading and short selling pilot programme

2014 ◽  
Vol 10 (3) ◽  
pp. 368-384 ◽  
Author(s):  
Saqib Sharif ◽  
Hamish D. Anderson ◽  
Ben R. Marshall
Keyword(s):  
Stock Returns ◽  
Event Study ◽  
Stock Exchange ◽  
Abnormal Returns ◽  
Short Selling ◽  
Market Model ◽  
Short Sales ◽  
Content Type ◽  
Pilot Programme ◽  
The Impact

Purpose – The purpose of this paper is to investigate how the announcement and implementation of short sales and margin trading regulation affects Chinese stock returns and trading volume. On 31 March 2010, the Chinese regulators launched a pilot programme, allowing short sales and margin trading for 50 Shanghai Stock Exchange and 40 Shenzhen Stock Exchange stocks. Design/methodology/approach – This paper uses an event study approach to compare market model abnormal returns (ARs) of the pilot firms with two distinct matched firm samples. A volume event study is also conducted to examine abnormal trading activity surrounding the key events in the pilot stocks. Findings – Negative ARs follow both the announcement and implementation of short selling and margin trading. This suggests the negative impact of short sales dominates the positive impact of margin trading on an average. Volume also declines, which is consistent with uninformed investors’ seeking to avoid trading against informed traders. Originality/value – The paper appears to be the first to address the impact of both the announcement and implementation of short selling and margin trading rule changes on returns and liquidity using individual stock data.

scholarly journals Reaksi Pasar Saham Terhadap Kebijakan Dividen Sebelum dan Sesudah Ex- Dividend Date

2020 ◽  
Vol 4 (1) ◽  
pp. 16-23
Author(s):  
Aulia Azizah
Keyword(s):  
Event Study ◽  
Abnormal Return ◽  
Stock Exchange ◽  
Research Result ◽  
T Test ◽  
Confounding Effect ◽  
Paired Sample ◽  
Before And After ◽  
Sample Test ◽  
Related Sample

Abstract This study aimed to analyzed market reaction caused  the announcement of rising dividend or dividend down before and after Ex-dividend date in Indonesia Stock Exchange (IDX).This research used event study method by using abnormal return on share as research variable and used price data of shares as research unit analysis. As the result, 26 companies as the sample of 45 companies which registered in index LQ45 in Indonesia Stock Exchange period 2016-2018 by purposing sampling technique. Measurement of variable using the calculation of the average abnormal return of shares by testing the hypothesis using different test paired sample t-test and Wilxocon related sample test with the help of SPSS version 22.The research result showed there was no difference in abnormal return on share before and after Ex-dividend date in the companies which announced rising dividend and dividend down in Indonesia Stock Exchange (IDX) period 2016-2018. The results of the different paired sample t-test obtained a significance value of 0,486 which was greater than 0,05 and in the Wilxocon test the related sample test obtained z score of 1,478 which was greater than z table which was 1.458. For the next research, it is recommended to test the different indexes and regard to the confounding effect which can lead to bias.Key words: Dividend, Abnormal Return, Ex- Dividend date, Event StudyAbstrak Penelitian ini bertujuan untuk menganalisis reaksi pasar saham yang ditimbulkan oleh  pengumuman dividen naik atau pengumuman dividen turun sebelum dan sesudah ex- dividend date di Bursa Efek Indonesia (BEI). Metode penelitian ini menggunakan event study dimana menggunakan abnormal return saham sebagai variabel pengujian yang menggunakan data harga saham harian sebagai unit analisi penelitiian. Hasil pengumpulan data  diperoleh 26 perusahaan sebagai sampel dari populasi sebanyak 45 perusahaan yang terdaftar di indeks LQ45 di Bursa efek Indonesia periode 2016-2018 dengan teknik sampling secara purposive sampling. Pengukuran variabel menggunakan penghitungan rata- rata abnormal return saham dengan pengujujian hipotesis menggunakan uji beda paired sample t-test dan uji Wilxocon releted sample test dengan bantuan aplikasi SPSS versi 22. Hasil peneltian menyimpulkan tidak terdapat  perbedaan abnormal return saham sebelum dan sesudah Ex-dividend date pada perusahaan yang mengumumkan dividen naik atau dividien turun di Bursa Efek Indonesia periode tahun 2016-2018 Hasil uji beda paired sample t-test diperoleh nilai signifikansi sebesar 0,486 yang atinya lebih besar dari 0,05 dan pada uji Wilxocon releted sample test diperoleh z-hitung sebesar 1,478 dimana lebih besar dari z tabel yaitu 1,458. Untuk peneliti selanjutnya disarankan melakukan pengujian pada indeks berbeda dan memperhatikan confounding effect yang dapat memunculkan bias. Kata Kunci : Dividend, Abnormal Return, Ex- Dividend date, Event Study

scholarly journals The Impact of Scandalous News in the Automobile Manufacture on Companies from the Same Industry: A Comparative Study on the Chinese and European Markets

2021 ◽  
Vol 17 (23) ◽  
pp. 67
Author(s):  
Anastasia Mews
Keyword(s):  
Stock Returns ◽  
Stock Price ◽  
Abnormal Returns ◽  
Spillover Effects ◽  
Control Group ◽  
Sales Growth ◽  
Chinese Market ◽  
Cumulative Abnormal Returns ◽  
Before And After ◽  
The Impact

This paper examines the effect of scandalous news on corporate reputation of rival firms from the same industry and investigates the effects’ differences in China and in Europe, providing evidence that scandalous news influences not only the target company itself, but also other companies from the industry. For this purpose, the paper uses the 2015 Volkswagen emissions scandal as a natural experiment. Volkswagen, BMW, Mercedes-Benz, Audi and Porsche were selected as sample companies. To measure reputational spillover effects, cumulative abnormal stock returns and sales growth of the sample companies are calculated and compared before and after the announcement of the scandal. The methodology adopted for estimating stock returns is the event study method, which measures the impact of a specific event on the value of a firm. Stock price data is collected from Bloomberg and used to calculate cumulative abnormal returns of the sample companies. Furthermore, difference-in-differences estimation is used to compare the sample companies’ sales growth before and after the scandal. Volkswagen, Audi, BMW and Mercedes-Benz are included in the treatment group, whereas 29 non-German car manufacturers were selected as the control group. The results show that overall rival companies were affected by the scandal, cumulative abnormal returns declined by 6% and 10% for BMW and Mercedes-Benz respectively, showing the contagion effect. However, the sales growths of these two manufacturers greatly increased, specifically on the Chinese market for Mercedes-Benz and on the European market for BMW, proving dominance of the competitive effect and differences of the reputational spillover effects across countries.

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