Sentiment Analysis of Current Reports Texts with Use of Cumulative Abnormal Return and Deep Neural Network

The deep neural network - BERT model (Bidirectional Encoder Representations from Transformers) and the stocks cumulative abnormal return is used in this article to analyze the sentiment of financial texts. The proposed approach, unlike those used so far, does not require the creation of dictionaries, takes into account the broad context of words and their meaning in financial texts, eliminates the problem of ambiguity of words in various contexts, does not require manual labelling of data and is free from the subjective assessment of the researcher. The sentiment of financial texts in the meaning presented in this paper is directly related to the market reaction to the information contained in these texts. For texts belonging to one of the two classes (positive or negative) with the highest probability the BERT model gives the results of predictions with a precision level of 62.38% for the positive class and 55% for the negative class. The results at this level can be used in event study, market efficiency research, investment strategy development or support of investment analysts using fundamental analysis.

Modeling and Estimation of Cumulative Abnormal Return using VECM

This paper examined how firm-level idiosyncratic risk varies over time. It affected initial public offering (IPO) in the presence of pump-and-dump and flipping trends during the early trading of IPO stocks in the Indonesia Stock Exchange. The paper used the IPO data taken from 181 companies during the year 2015-2019. It revisited the relationship between Cumulative Abnormal Return thirty-days (CAR30D) and Cumulative Abnormal Return five-days (CAR5D) and the Characteristics (IPO Floating shares, IPO Fund and Price) and Macroeconomics Condition (Inflation rate). It also used the cointegration analysis and VECM model. The paper found that Both LnFloat and LnPrice had causal evidence in the long-run causality or short-run with Cumulative Abnormal Return thirty days (CAR30D). We also noted that idiosyncratic risk exposure depends on IPO characteristics. It was crucial for firms going public in hot-issue markets, undervalued IPOs, and high idiosyncratic-risk issues. The model suggested that those series should cointegrate firstly. However, the variable of LnIPOFund had causal evidence in the short-run causality only.

The Short-Term Influences of Covid-19 Pandemic on Indonesia Stock Exchange

This study aimed to discern the short-term influences of the Covid-19 pandemic on the Indonesia Stock Exchange. The stocks from nine industries in Indonesia Stock Exchange were putting to use in this study. In this study, the short-term cumulative abnormal return was calculated by applying the data taken from 59 days of trading after the confirmation notice of the first Covid-19 case in Indonesia. The result of the study depicted a Return in the event window (+1,+9) dropped drastically, which later bounced back; There was no cumulative abnormal return in the pre-event, and Cumulative abnormal return started to appear during event and post-event.DOI: 10.26905/jkdp.v25i3.5796

Pengaruh Political Connection terhadap Cumulative Abnormal Return dan Trading Volume Activity pada Pemilihan Presiden 2019

Purpose: This study aimed to identify the impact of Political Connection on Cumulative Abnormal Return (CAR) and Trading Volume Activity (TVA) for companies that associate with political figures in the presidential election of 2019. Research methodology: This study used quantitative methods, with a population of 25 companies on the Indonesian stock exchange, through daily stock prices. Result: This investigation showed no significant difference in the Cumulative Abnormal Return between before and after the announcement of the Constitutional Court. Then, there was no significance value on Trading Volume Activity and Cumulative Abnormal Return between before and after the announcement of General Election Commissions. Limitations: In this study, the limitation is observation time which is only 36 days. The number of samples is limited, which only 25 companies with the scope of research of companies that have affiliations with the winners of the 2019 general election. Contribution: This research implicates companies affiliated with politics. This is in the 2019 general election against the winners of the general election in 2019.

Apakah pengumuman resmi kasus pertama Covid-19 oleh Presiden Joko Widodo memiliki kandungan informasi? Event study pada saham-saham LQ-45

This study analyzes the phenomenon of the first case of Covid-19 transmission in Indonesia and its impact on the capital market in Indonesia. This study aims to test whether there is a negative PCAD pattern after the first announcement of the covid-19 virus transmission case on the Indonesian capital market and to prove that the Indonesian capital market experienced a significant decline in returns after the first announcement period of the covid-19 virus transmission. Stocks that are included as LQ45 stocks are being utilized and event study is the method to analyze the market response during the window period (t-10, t+10) and uses the independent sample t-test to compare the average abnormal return. mean (AAR) and mean cumulative abnormal return (CAAR). The results of this study indicate that the market takes a wait & see strategy, PCAD shows the form of a negative sign after the event and there is a difference between AAR and CAAR 10-days before and 10-days after the event. Overall, this research shows that the market has responded negatively to information related to the Covid-19 virus.

CAN RAINMAKERS JUSTIFY THEIR PAY? THE ROLE OF INVESTMENT BANKS IN REIT M&AS

This study explicitly rejects the prima facie proposition that the top-tier investment banks are capable of delivering supernormal value creation to the shareholders of a REIT acquirer in a corporate acquisition. Using the event study method, we find that REIT acquirers advised by market-leading investment banks suffer an average cumulative abnormal return of −4.41% following the M&A announcement, whereas REIT acquirers advised by non-top-tier investment banks only suffer an average cumulative abnormal return of −1.49%. The evidence shows that the contemporary practice of employing investment banks based on the prestige of the advisory firms could potentially result in value-destroying M&As for the REIT acquirers.

THE EFFECT OF FINANCIAL PERFORMANCE AND DIVIDEND POLICY ON CUMULATIVE ABNORMAL RETURN

The purpose of this study was to determine the effect of financial performance and dividend policy on Cumulative Abnormal Return for company shares in Jakarta Islamic Index. The population was all company stocks listed on The Jakarta Islamic Index from 2009 to 2018. The samples were selected by purposive sampling with the criteria the companies were consistently included in JII (not delisted and relisted) during the 2009-2018 period and those that met the criteria were five companies. Financial performance was proxies by Earning per Share, Price Earnings Ratio, Current Ratio, and Return on Equity. Meanwhile, dividend policy was proxies by the Dividend Payout Ratio. This research type was quantitative by using the panel data regression method. The results showed that Earning per Share effect on Cumulative Abnormal Return, while the Price Earnings Ratio, Current Ratio, Return On Equity and Dividend Payout Ratio variables had no effect on Cumulative Abnormal Return. The implications of this research for other parties consists of scientific development, especially in the field of financial management, and can be an input for investors in investing in shares on the Indonesia Stock Exchange (IDX) so that it can have a positive impact in the form of dividends or capital gains to investors. And can be used as a reference for further researchers by adding other variables that are not included in this study.

BAGAIMANA REAKSI PASAR TERHADAP PERISTIWA AMANDEMEN AKUNTANSI IMBALAN KERJA

The purpose of this study is to see the market reaction before and after the event of the work imbalance accounting amendment ratification. This study uses a total of 311 observations of companies listed on the Indonesia Stock Exchange (IDX) during 2013 and uses the Event Study research approach and Paired Sample T-test analysis techniques to test differences in market reactions as indicated by Cumulative Abnormal Return (CAR) before and after. event ratification of the work imbalance accounting amendment. This study found that there was a positive and significant difference in CAR between before and after the event of ratification of the work imbalance accounting amendment. This research has implications for investors to get a picture of the market reaction that occurs as a result of the ratification of the work imbalance accounting amendment. The results of this study indicate that there are differences in market reactions between prior to the ratification of the work imbalance accounting amendment

The Influence of Auditor Opinion, Audit Committee, Discretionary Accrual on Corporate Performance and Cumulative Abnormal Return (Evidence From Indonesia Stock Exchange)

This research aimed to analyze and determine the influence of auditor opinion, audit committee, and discretionary accrual onthe cumulative abnormal return of a company using corporate performance as a moderating variable in the agricultural, basic chemical industry, food and beverage, and finance companies listed on the Indonesia Stock Exchange 2016-2019. The data analysis method used path analysis and multiple linear regressions on a research population of 625 companies listed on the Indonesian Stock Exchange 2016-2019. This research used 226 companies as samples. Research result shows that the auditor opinion and audit committee has no significant influence on corporate performance. Discretionary accrual has a significant influence on corporate performance. Auditor opinion, audit committee, and discretionary accrual have no positive influence on cumulative abnormal return. Corporate performance has a significant influence on cumulative abnormal returns.

Uma revisão sistemática sobre teleconferências de resultados como meio de divulgação voluntária no mercado de capitais

Este artigo fornece uma visão geral da literatura de pesquisa sobre as teleconferências de resultados como um meio de divulgação voluntária. A revisão sistemática abarca a pesquisa, a estruturação e a sintetização dos estudos empíricos que utilizaram termos como tone; conference calls; disclosure; analysts; managers e voluntary, para avaliar o desenvolvimento recente. Os tópicos de destaque incluem a revisão das principais óticas de análise sobre as teleconferências de resultados e os principais tipos de pesquisa que usam esse objeto de estudo. Na literatura sobre teleconferências de resultados, são apontadas abordagens empíricas tanto qualitativas como quantitativas. Além disso, há estudos sobre gerenciamento de resultados, assimetria da informação e reação do mercado, que abrangem a divulgação voluntária. Dentre os resultados de pesquisa, cabe destacar a disseminação de artigos que medem a variável tom, com a utilização predominante do dicionário de Loughran e McDonald (2011). Como a abordagem para reação do mercado utiliza-se o Cumulative Abnormal Return (CAR), que é focada principalmente em examinar a influência do tom transcrito nas teleconferências de resultados sobre a reação do mercado acionário.