REAKSI PASAR MODAL DARI DAMPAK PERISTIWA KERUSUHAN MAKO BRIMOB MEI 2018 TERHADAP ABNORMAL RETURN INDEKS LQ45 YANG TERDAFTAR DI BEI

This research is an event study that aims to determine the difference in the average Abnormal return (AR) before, during and after the Mako Brimob riots. The subject of this study is the LQ45 index company that has fulfilled the criteria, namely the company does not conduct corporate actions such as the announcement of stock split, right issue, merger & acquisition and devidend in the observation period, which is five days before the riot, one day during the riot (May 9, 2018) and five days after the riots. The results of the data normality test found that the data in this study were normally distributed. p-value shows the number 0.412. The results of the different tests using independent Sample T-Test (H1) showed no difference in the average abnormal return before and during the Mako Brimob riots (ρ = 0.050). The results of different tests using independent Sample T-Test (H2) showed no difference in the average abnormal return during and after the incident of the Mako Brimob riots (ρ = 0.117). The results of different tests using Paired Sample T-Test (H3) showed no difference in the average abnormal return before and after the incident of the Mako Brimob riots (ρ = 0.77).

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DAMPAK KERUSUHAN MAKO BRIMOB MEI 2018 TERHADAP ABNORMAL RETURN INDEKS LQ45 YANG TERDAFTAR DI BEI

MEDIA AKUNTANSI DAN PERPAJAKAN INDONESIA ◽

10.37715/mapi.v1i1.1172 ◽

2021 ◽

Vol 1 (1) ◽

pp. 1-14

Author(s):

Dewo Adhi Guminto ◽

Maria Assumpta Evi Marlina

Keyword(s):

Abnormal Return ◽

T Test ◽

P Value ◽

Paired Sample ◽

Normality Test ◽

Average Abnormal Return ◽

Before And After ◽

The Subject ◽

Corporate Actions ◽

Observation Period

This research is an event study that aims to determine the differencein the average Abnormal return (AR) before, during, and after the MakoBrimob riot. The subject of this study is the LQ45 index company that hasfulfilled the criteria. The company does not conduct corporate actions suchas the announcement of stock split, right issue, merger & acquisition, anddividend in the observation period, which is five days before the riot, oneday during the riot (May 9, 2018) and five days after the riot. The results ofthe data normality test found that the data in this study were normallydistributed. P-value shows the number 0.412. The results of the differenttests using independent Sample T-Test (H1) showed no difference in theaverage abnormal return before, and during the Mako Brimob riots (ρ =0.050). The results of different tests using independent Sample T-Test (H2)were no difference in the average abnormal return during and after the incidentof the Mako Brimob riots (ρ = 0.117). The results of different testsusing Paired Sample T-Test (H3) were no difference in the average abnormalreturn before and after the incident of the Mako Brimob riots (ρ = 0.77).

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ANALYZING ABNORMAL RETURN BEFORE AND AFTER THE ANNOUNCEMENT OF MERGER AND ACQUISITION IN 2018

Journal of Business and Behavioural Entrepreneurship ◽

10.21009/jobbe.001.2.02 ◽

2018 ◽

Vol 1 (2) ◽

pp. 14-22

Author(s):

Sonny Haryanto ◽

Umi Mardiyati ◽

Agung Dharmawan Buchdadi

Keyword(s):

Mergers And Acquisitions ◽

Stock Price ◽

Abnormal Return ◽

Abnormal Returns ◽

T Test ◽

Testing Hypotheses ◽

Paired Sample ◽

Minute Period ◽

Before And After ◽

Observation Period

This study aims to analyze the abnormal returns before and after the announcement of mergers and acquisitions in the companies listed on the IDX 2018. In this study the observation period taken was three days before and after the announcement of mergers and acquisitions with the number of samples observed were 9 companies. The method for calculating abnormal returns used is the market adjusted return by using an intraday stock price of 15 minutes. Based on testing hypotheses conducted by paired sample t-test, it was found that there were no significant differences in abnormal returns before and after the announcement of mergers and acquisitions in each 15 minute period.

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ANALISIS PERBEDAAN ABNORMAL RETURN DAN TRADING VOLUME ACTIVITY SEBELUM DAN SESUDAH PERISTIWA PENETAPAN UNDANG-UNDANG TAX AMNESTY

JMM UNRAM - MASTER OF MANAGEMENT JOURNAL ◽

10.29303/jmm.v10i3.661 ◽

2021 ◽

Vol 10 (3) ◽

pp. 186-198

Author(s):

I Komang Wisnu Wardhana ◽

Hermanto Hermanto ◽

I Nyoman Nugraha AP

Keyword(s):

Abnormal Return ◽

Trading Volume ◽

Secondary Data ◽

Volume Activity ◽

Analytical Technique ◽

Tax Amnesty ◽

Average Abnormal Return ◽

Before And After ◽

The Difference

The purpose of this study was to determine the difference in the average abnormal return and trading volume activity before and after the enactment of the tax amnesty law on the LQ-45 index. The type of data used in this study is secondary data with data collection techniques using the documentation method. Determination of the sample in this study using purposive sampling method with certain criteria so as to obtain 45 samples. The analytical technique used in this research is paired sample t-test with an observation period of 10 days. The results of this study indicate that: (1) There is no difference in the average abnormal return before and after the enactment of the tax amnesty law. (2) There is no difference in the average trading volume activity before and after the enactment of the tax amnesty law.

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THE EFFECT OF BASIC LIFE ASSISTANCE TRAINING (BHD) ON MOTIVATION AND DEMEANOUR OF CLASS XI STUDENTS IN RESCUING TRAFFIC ACCIDENTS IN SMA NEGERI 2 TENGGARONG

Jurnal Ilmu Kesehatan ◽

10.30650/jik.v7i1.1244 ◽

2019 ◽

Vol 7 (1) ◽

pp. 39-47

Author(s):

Indah Nur Imamah ◽

Alfi Ari Fakhrur Rizal ◽

Milkhatun Kalimantan Milkhatun

Keyword(s):

Traffic Accidents ◽

Life Support ◽

Sampling Technique ◽

T Test ◽

Control Group ◽

P Value ◽

Public Attention ◽

The Public ◽

Before And After ◽

The Difference

Traffic accidents are one of the public health problems that affect all sectors of life. The phenomenon of traffic accidents so far has not received much public attention as a cause of death. The increase in mortality rates that occur on the highway is very high and quite a concern and vigilance for the community. This usually happens one of them because the Indonesian people do not know how to help victims who are good and right when finding victims. As a result most of actions is wrong, so it can add to injury and death. This study aims to determine the effect of basic life support (BLS) training on the motivation and demeanour of class XI students in rescuing traffic accidents in SMA Negeri 2 Tenggarong. This study uses a quasy experimental method of pre and post design with a control group. Proportional stratified random sampling technique with a sample of 78 students and data collection using a questionnaire sheet. Data that was analyzed by paired t test in each group showed a p-value of 0,000 <0.05, meaning that there was a statistically change in motivation and attitude between before and after treatment in the form of BLS training for class XI students at SMAN 2 Tenggarong. The result is not much different from the independent t test which showed p-value 0,000 <0.05, which means there is a statistically different demeanour between the difference before and after treatment in the form of BLS training in the control and intervention groups. The results showed that there was a statistically significant change in motivation and demeanour between before and after the BLS training was given to the motivation and demeanour of class XI students at SMAN 2 Tenggarong with a p-value of 0,000 <0.05.

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Efektivitas Akupresur dan Minuman Jahe terhadap Pengurangan Intensitas Nyeri Haid/Dismenore Pada Remaja Putri

Jurnal Ilmiah Universitas Batanghari Jambi ◽

10.33087/jiubj.v21i1.1154 ◽

2021 ◽

Vol 21 (1) ◽

pp. 215

Author(s):

Indah Dewi Sari ◽

Utary Dwi Listiarini

Keyword(s):

Young Women ◽

Learning Activities ◽

Wilcoxon Test ◽

P Value ◽

Menstrual Pain ◽

Normality Test ◽

Before And After ◽

Post Test ◽

Quasi Experimental ◽

The Difference

Half of the women in Indonesia experience menstrual pain / dysmenorrhoea, 54.89%, experience various disorders including abdominal pain, cramps and back pain. The purpose of this study was to determine the effectiveness of acupressure, ginger drink and the difference in giving acupressure and ginger drink to reducing the intensity of menstrual pain / dysmenorrhea in young women at SMK Swasta PAB 5 Klambir Lima 2020. The design of this study used a quasi-experimental pre and post test with a sample of 30 students who were divided into two groups. Each group was given acupressure and ginger drink in the morning and evening during menstruation from day one to day two. Respondents were assessed for pain before and after the intervention was given. The results of the Shapiro-Wilk normality test contained Sig data (p <0.05). The Wilcoxon test has a p-value of 0.002 (p <0.05), which means that acupressure is effective in reducing the intensity of menstrual pain / dysmenorrhea, there is a p-value of 0.001 (p <0.05) which means that ginger is effective against reducing pain intensity. menstruation / dysmenorrhea, there is a p-value of 0.034 (p <0.05), which means that there is a difference in the effectiveness of acupressure and ginger drink in reducing the intensity of menstrual pain / dysmenorrhea. There is an effectiveness of giving acupressure, ginger drink, and there is a difference in giving acupressure and ginger drink on the intensity of menstrual pain / dysmenorrhea on young women. It is hoped that the school will provide ginger drinks and acupressure measures to young women who experience menstrual pain / dysmenorrhea so that they can participate in learning activities at school.

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The Announcement of Sharia Bank’s Conditional Merger Agreement. How Investor Reacted?

Journal of Business Management Review ◽

10.47153/jbmr22.1002021 ◽

2021 ◽

Vol 2 (2) ◽

pp. 136-146

Author(s):

Syamsuddin Syamsuddin ◽

Versiandika Yudha Pratama

Keyword(s):

Event Study ◽

Stock Price ◽

Abnormal Return ◽

Secondary Data ◽

T Test ◽

Event Window ◽

Paired Sample ◽

Average Abnormal Return ◽

Significant Difference ◽

Before And After

This study aims to determine there is a difference in average abnormal return of BRI Syariah before and after the signing of the Conditional Merger Agreement (CMA), which is on October 12th, 2020. This research used event study for method and the data in this study are secondary data in the form of stock price data of BRI Syariah. The event window in this study for 11 (eleven) working days which is 5 (five) days before the event, 1 (one) day when the event occurs and 5 (five) days after the signing of the Conditional Merger Agreement (CMA) BUMN sharia bank. Meanwhile, the estimated period is set for 120 exchange days, namely at t-125 to t-6. Test conducted by paired sample t-test. The results of the paired sample t-test showed that there is no significant difference between the average abnormal return of BRI Syariah shares before and after the signing of the Conditional Merger Agreement. It can be concluded that neither the market nor investors reacted to the signing of the Conditional Merger Agreement (CMA) that occurred at BRI Syariah Bank.

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ABNORMAL RETURN DAN LIKUIDITAS SAHAM ATAS PENGUMUMAN AKUISISI

Jurnal Manajemen ◽

10.24912/jm.v20i1.71 ◽

2017 ◽

Vol 20 (1) ◽

pp. 151

Author(s):

Suherman Suherman ◽

Riznita Nuraisyah ◽

Gatot N. Ahmad

Keyword(s):

Mergers And Acquisitions ◽

Abnormal Return ◽

Trading Volume ◽

Abnormal Returns ◽

Merger And Acquisition ◽

Stock Liquidity ◽

Before And After ◽

The Difference ◽

Adjusted Model ◽

Observation Period

Tujuan penelitian ini adalah untuk menganalisis perbedaan abnormal return dan likuiditas saham sebelum dan sesudah pengumuman akuisisi. Pengukuran abnormal return menggunakan market-adjusted model. Pengukuran likuiditas saham menggunakan volume perdagangan dan Amihud’s Illiquidity ratio. Periode pengamatan (event windows) penelitian ini selama 11 hari bursa, yaitu 5 hari bursa sebelum pengumuman akuisisi dan 5 hari bursa sesudah pengumuman akuisisi. Sampel penelitian ini adalah 70 perusahaan yang mengumumkan akuisisi antara 2010-2014. Hasil uji hipotesis menunjukkan bahwa 1)terjadi perbedaan abnormal return yang signifikan sebelum dan sesudah akuisisi, dan 2)tidak terdapat perbedaan likuiditas saham yang signifikan pada periode sebelum dan sesudah akuisisi.The purpose of this study is to analyze the difference of abnormal return and liquidity before and after the announcement of mergers and acquisitions. Abnormal returns are measured with market-adjusted model. Liquidity is measured with trading volume and Amihud Illiquidity ratio. The observation period (event windows) of this research is 11 trading days which 5 trading days before the announcement of the merger and acquisition and 5 trading days after the announcement mergers and acquisitions. Research sample consists of 70 companies which announce merger and acquisition between 2010 and 2014. The results show that 1)there is significant differences of abnormal returns before and after merger and acquisition, and 2)there is no significant differences of stock liquidity before and after merger and acquisition.

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ANALISIS PERBEDAAAN AVERAGE ABNORMAL RETURN DAN TRADING VOLUME ACTIVITY SEBELUM DAN SESUDAH PERISTIWA DIVIDEN TUNAI PADA PERUSAHAAN YANG TERDAFTAR DI JAKARTA ISLAMIC INDEX (JII) PERIODE 2014 – 2017

Jurnal Ekonomi Syariah Teori dan Terapan ◽

10.20473/vol6iss201912pp2512-2526 ◽

2020 ◽

Vol 6 (12) ◽

pp. 2512

Author(s):

Azyyati Yusrina ◽

Puji Sucia Sukmaningrum

Keyword(s):

Abnormal Return ◽

Trading Volume ◽

Rank Test ◽

Volume Activity ◽

Wilcoxon Sign Rank Test ◽

Average Abnormal Return ◽

Before And After ◽

Wilcoxon Sign Rank ◽

Sign Rank Test ◽

Observation Period

This study aims to find out and explain the market reaction caused by the corporate action announcement in the form of dividend cash made by issuers registered in the Jakarta Islamic Index for the period of 2014 to 2017. The object of research is issuers who carry out activities on the announcement of Cash Devidend in the period of observation that are registered in the Jakarta Islamist Index which has been determined based on certain criteria (purposive sampling). There are 17 issuers with a total of 91 being the research sample. The observation period consists of 60 days estimated period, 10 days before the cume date and 10 days after the cume date. The focus of the research is to see the reaction shown by changes in Average Abnormal Return and Trading Volume Activity by using paired sample t-test for trading volume activity variables and Wilcoxon sign-rank test for abnormal return variables. Processing data using Stata ver statistical tools 14 by setting a significant level of 5%. The results showed that there were significant differences in Average Abnormal Return before and after the announcement and there were no differences in the Trading Volume Activity before and after the announcement.Keywords: event study, cash deviden, Average Abnormal Return, Trading Volume Activity

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Pengaruh Penerbitan Obligasi Syariah Terhadap Return Saham (Studi Kasus Pada Perusahaan Yang Menerbitkan Obligasi Syariah dan Terdaftar Pada Bursa Efek Indonesia (BEI)

Jurnal Bisnis, Manajemen, dan Ekonomi ◽

10.47747/jbme.v1i2.13 ◽

2020 ◽

Vol 1 (2) ◽

pp. 1-10

Author(s):

Mutia Dwiana

Keyword(s):

Stock Returns ◽

Event Study ◽

Abnormal Return ◽

Sampling Technique ◽

Observation Time ◽

T Test ◽

Average Abnormal Return ◽

Significant Difference ◽

Event Study Method ◽

Before And After

This type of research is quantitative, this research is conducted on companies that issue Islamic bonds and are listed at the Bursa Efek Indonesia (BEI). The method used is the event study method to show whether there is an effect of the issuance of Islamic bonds on stock returns in the event period of the issuance of Islamic bonds (sukuk), with a length of observation time of 15 days before and 15 days after the issuance event. The population used is companies that issue Islamic bonds that are still circulating as of February 2020. The sample was determined by purposive sampling technique and a sample of 15 incidents of Islamic bond issuance was obtained from 8 companies. Then the data is processed using t-test and paried sample t-test. The results showed that there was a significant Average Abnormal Return around the Islamic bond issuance period, which means that the issuance of Islamic bonds (sukuk) had an effect on stock returns. And there is also a significant difference in stock returns between before and after the issuance of Islamic bonds.

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PENGARUH PENGUMUMAN PERUBAHAN DIVIDEN TERHADAP ABNORMAL RETURN SAHAM DI BURSA EFEK INDONESIA

Jurnal Fokus Manajemen Bisnis ◽

10.12928/fokus.v2i2.1319 ◽

2012 ◽

Vol 2 (2) ◽

pp. 61

Author(s):

Nur Evan ◽

Aftoni Sutanto

Keyword(s):

Information Content ◽

Abnormal Return ◽

Cash Dividend ◽

Investment Activity ◽

Average Abnormal Return ◽

Before And After ◽

The Difference ◽

Content Information ◽

High Uncertainty

The information about increase and decrease of the cash dividend that it's be dividend by the company is one of information that be considered important enough for investor, because in the information include. The loading information that due to advantage prospect that will get by the company in the next time. It's caused a condition where the investors is met to the high uncertainty of the result of it's investment activity so it's increase and decrease information a cash dividend can be assumed as an indicator for repairing the advantage prospect company in the next time. This research examines information content of cash dividends announcements increase and decrease and the difference of average abnormal return between companies announcing of cash dividend. The result shows that those companies announcing the increase of cash dividends, the is reactive, especially in the t+6 after dividends announcement. It indicate that there is content information on the announcement of cash dividends increase. Mean while those companies announcing the decrease of cash dividends, the market is reactive, especially in the t+9 after announcement of cash dividends. The test of the difference of average abnormal return before and after on the announcement of the increase and the decrease of cash dividends, show that there is no difference between average abnormal return before and after announcement of increase and decrease cash dividends.

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