Stock Market Reaction to Information Technology Investments in the USA and Poland: A Comparative Event Study

Author(s):  
Narcyz Roztocki
2018 ◽  
Vol 54 (11) ◽  
pp. 2577-2595 ◽  
Author(s):  
Flávio de Freitas Val ◽  
Marcelo Cabus Klotzle ◽  
Antonio Carlos Figueiredo Pinto ◽  
Claudio Henrique da Silveira Barbedo

2015 ◽  
Vol 2 (3) ◽  
pp. 325-343
Author(s):  
Anis Sundiyah ◽  
I Made Sudana

This research examines stock market reaction to the political events related of Jokowi in the Indonesia Stock Exchange. Variables used in this research are average abnormal return (AAR) and cumulative average abnormal return (CAAR) which measured using a statistical test one sample t-test. In this research, there are 230 sampel in the announcement Jokowi as a presidential candidate, 316 sampelin the announcement of results of presidential election quick count and 339 sampel in the announcement of work cabinet. Analysis model in this research is event study during the test period of 11 days exchange trading. Consistency of the stock market reaction was compared descriptively based on the analysis of AAR and CAAR. Testresults of AAR and CAAR showed that stock market consistently reacted positively to the announcement Jokowi as a presidential candidate and the announcement of the work cabinet and inconsistent with the announcement of the results of quick count because stock market reacted negatively. keywords: event study, political events of Jokowi, AAR, CAAR, consistency reaction.


2016 ◽  
Vol 8 (8) ◽  
pp. 23 ◽  
Author(s):  
Marwan M. Abdeldayem ◽  
Ramzi Nekhili

<p>Between 2014 and 2015, the oil price almost halved. Since then, it has fallen a further 40%. Consequently, Moody’s Investors Service has downgraded Bahrain’s long-term issuer rating from Baa3 to Ba1with a negative outlook and placed it on review for further downgrade. In this context, previous literature reaches no agreement about the impact of credit rating changes on stock prices. Some studies indicate that credit rating changes do not affect stock prices, while others conclude they do. Therefore, this study aims to examine whether credit rating change has a significant impact on Bahraini stock prices. We conducted an event study to analyze stock market reaction to such news in the Kingdom of Bahrain. Even though Bahrain has witnessed a series of sovereign downgrades over the past five years, the latest downgrading event in February 17, 2016, has been followed by a credit rating downgrade of its banking sector in March 7, 2016. Hence the choice of the sample period of the event study includes both these downgrading events over the period of study from January 2, 2014 till March 22, 2016. Three sectors were selected from the Bahrain all share index: banks, service and industrial. The findings of the study reveal that sovereign rating downgrade has some mixed pre-announcement and post-announcement effects and credit rating downgrade provides useful information. Overall, the results indicate that downgrades and negative outlook announcements have an adverse impact on long-term equity returns, but little impact on short-term performance.</p>


2020 ◽  
Vol 17 (4) ◽  
pp. 327-340
Author(s):  
Roman Pavlov ◽  
Tetiana Grynko ◽  
Tetiana Pavlova ◽  
Oksana Levkovich ◽  
Dariusz Pawliszczy

The stronger the level of economic integration between countries, the greater the need to study the formation patterns of the stock market reaction to the financial information signals. This concerns the Ukrainian stock market, which is now in its infancy, and which reaction to financial information signals is sometimes ambiguous. The research aims to identify the formation patterns of return and volatility indicators of the Ukrainian stock market reaction to the US financial information signals. To assess the direct nature of US financial information signals effect on the PFTS stock index, the GARCH econometric modeling toolkit was applied. The research information base is the PFTS stock index and the Federal Reserve System financial information signals at the discount rate for 2000–2019. The fetch is divided into intervals corresponded to the ascent and decline phases of the financial cycle. It was found that an unforeseen increase in the discount rate at the financial cycle decline phase by 25 basis points decreases the PFTS stock index return, on average by 2.9%. Besides, the hypothesis about the general change stabilizing effect in the discount rate on the Ukrainian stock market volatility at the financial cycle growth phase was confirmed. Nevertheless, for investors, the most essential is the regulator’s monetary signals in the discount rate at the financial cycle decline phases rather than at the ascent phases because there is a more significant increase in the volatility level.


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