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Tytuł:
INVESTORSʼ REACTIONS FOR SUSTAINABILITY INDEX INCLUSION – IS CSR A GOOD NEWS?
Autorzy:
Daszyńska-Żygadło, Karolina
Ryszawska, Bożena
Słoński, Tomasz
Zawadzki, Bartosz Marek
Powiązania:
https://bibliotekanauki.pl/articles/659055.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
CSR
Sustainability
ESG
event study
Opis:
This article presents the problem of measuring the impact of information disclosure aboutCSR activities on stock performance. The research was performed on two indexes which representPan-European capital market and local Central and Eastern European capital market. Differentmarket characteristics could limit the application of results presented in numerous studiesperformed on well-established markets. The information with relatively strong signal for investoris the inclusion to CSR index. In order to measure the investors’ reaction the event study analysiswas performed. It was proved that the short–term reaction was very similar on each market. Thereaction to announcement of CSR index inclusion was slightly negative, but this effect was offsetby the opposite reaction in the day of inclusion. The total reaction in the seven days event windowwas close to zero. However, the long-term reaction measured in 30 trading days window wasnegative for two markets, but the local market investors show more discontent.
Źródło:
Acta Universitatis Lodziensis. Folia Oeconomica; 2014, 2, 300
0208-6018
2353-7663
Pojawia się w:
Acta Universitatis Lodziensis. Folia Oeconomica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
MACROECONOMIC INDICATORS FORECASTS ACCURACY AND REACTION OF INVESTORS ON THE WSE
Autorzy:
Wójtowicz, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/453019.pdf
Data publikacji:
2015
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Katedra Ekonometrii i Statystyki
Tematy:
macroeconomic news announcements
WSE
event study
Opis:
Every day analysts and news agencies publish forecasts of important macroeconomic indicators. When the announced value of an indicator differs from its forecast, investors must revise their strategies. The strength of investors’ reaction depend on the difference between expectations and the true value of the indicator. In this paper we analyze the reaction of investors on the WSE to U.S. macroeconomic news announcements. We compare the strength of the reaction when forecasts are based on information from different financial services.
Źródło:
Metody Ilościowe w Badaniach Ekonomicznych; 2015, 16, 2; 142-151
2082-792X
Pojawia się w:
Metody Ilościowe w Badaniach Ekonomicznych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
THE REACTION OF INTRADAY WIG RETURNS TO THE U.S. MACROECONOMIC NEWS ANNOUNCEMENTS
Autorzy:
Gurgul, Henryk
Suliga, Milena
Wojtowicz, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/453331.pdf
Data publikacji:
2013
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Katedra Ekonometrii i Statystyki
Tematy:
event study
macroeconomic announcements intraday data
Opis:
This paper analyses the reaction of stock returns on the Warsaw Stock Exchange to U.S. macroeconomic news announcements. The study is conducted on the basis of five-minute returns of WIG from January 2004 to December 2012. This nine-year period includes different stages of economic cycle and additionally the global financial crisis. Hence results of our analysis are not limited only to contraction or expansion and can be applied to bull and bear market. The application of event study analysis allows us to measure not only the strength of the impact of information release but also its duration.
Źródło:
Metody Ilościowe w Badaniach Ekonomicznych; 2013, 14, 1; 150-159
2082-792X
Pojawia się w:
Metody Ilościowe w Badaniach Ekonomicznych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stock Market Reaction to CEO Appointment – Preliminary Results
Autorzy:
Byrka-Kita, Katarzyna
Czerwiński, Mateusz
Preś-Perepeczo, Agnieszka
Powiązania:
https://bibliotekanauki.pl/articles/465592.pdf
Data publikacji:
2017-06-15
Wydawca:
Akademia Leona Koźmińskiego w Warszawie
Tematy:
CEO appointment
abnormal return
event study
Opis:
Stock Market Reaction to CEO Appointment – Preliminary Results
Źródło:
Journal of Management and Business Administration. Central Europe; 2017, 2; 23-42
2450-7814
Pojawia się w:
Journal of Management and Business Administration. Central Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Impact of US Macroeconomic News on the Prices of Single Stocks on the Vienna Stock Exchange
Autorzy:
Wójtowicz, Tomasz
Gurgul, Henryk
Mitterer, Christoph
Powiązania:
https://bibliotekanauki.pl/articles/2075347.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
event study
macroeconomic announcements
intraday data
Opis:
Recent studies have shown that announcements of information about the state of the US economy have had a significant impact on European stock markets. However, the importance of information about the US economy may vary in time. In order to analyze this issue, we examine the impact of announcements of unexpected US macroeconomic news on the prices of selected stocks listed on the Vienna Stocks Exchange. On the basis of the 5-minute returns of 13 stocks we examine how the strength and the significance of the reactions of investors to unexpected macroeconomic news from the US has changed over the last 15 years. Event study methodology allows us to describe precisely such reactions in the first minutes after news announcements
Źródło:
Central European Journal of Economic Modelling and Econometrics; 2021, 3; 287-329
2080-0886
2080-119X
Pojawia się w:
Central European Journal of Economic Modelling and Econometrics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Market Reaction to Stock Splits - Evidence from the Warsaw Stock Exchange
Autorzy:
Sekuła, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/16729033.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
split
Warsaw Stock Exchange
event study methodology
Opis:
Theoretical background: A share split is an operation that increases the total number of shares. The split is a technical operation and should not affect the market value of the company. The shareholding structure of the company remains unchanged when the shares are split. However, split studies around the world show the occurrence of abnormal returns. Purpose of the article: The article analyses splits based on market data from 2009 to 2021. The aim of the study is to analyse the cumulative average abnormal returns (CAARs) in the periods preceding stock splits on the Warsaw Stock Exchange (WSE). CAARs are analysed in different research variants. The influence of the stock market situation and the frequency of splits on the amount of abnormal returns is examined. Research methods: The research was carried out using event study analysis. The Market-Adjusted Return Model was used to determine abnormal returns. CAARs were calculated for each analysed event window. The statistical significance of abnormal returns was verified by the parametric t test and the non-parametric Corrado rank test. Main findings: The study showed statistically significant positive abnormal returns in the 30-day period preceding the split. The hypothesis that multiple splits cause particularly high increases in the market value of companies has not been confirmed. Research on the reaction to splits depending on the state of the stock market situation did not allow unambiguous conclusions in the case of the periods when the WSE Index (WIG) increased. Weaker reaction to planned splits in the period of worse market conditions was confirmed.
Źródło:
Annales Universitatis Mariae Curie-Skłodowska, sectio H – Oeconomia; 2023, 57, 1; 181-195
0459-9586
2449-8513
Pojawia się w:
Annales Universitatis Mariae Curie-Skłodowska, sectio H – Oeconomia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An Analysis of Insider Trading in the Credit Derivatives Market Using the Event Study Methodology
Autorzy:
Wareluk, Ewa
Powiązania:
https://bibliotekanauki.pl/articles/417414.pdf
Data publikacji:
2013
Wydawca:
Akademia Leona Koźmińskiego w Warszawie
Tematy:
insider trading
information flow
event study
credit derivatives
Opis:
Purpose: In this paper I investigate the information fl ow between the credit default swap market and the stock market as well as insider trading in the credit default swap market. Methodology: For my analysis I use the event study methodology. Using the event study methodology I calculate abnormal stock returns and abnormal credit default swap premium changes. The analysis is based on 175,874 observations collected for 92 companies between the years 2001 and 2010. Findings: The results show that the information fl ow from the credit default swap market to the stock market is the most signifi cant in terms of negative rating outlooks. The information fl ow is much less signifi cant in relations to negative surprises during announcements of annual fi nancial results and rating upgrades. Evidence of insider trading is also most evident with reference to negative rating outlooks. Additionally, a distinctive feature of the credit default swap market and the stock market is the asymmetric response to negative and positive credit information. Research limitations: The event study methodology does not consider other potentially important reasons for the information flow between markets than the ones actually investigated. The credit events and credit risk information used in this research are just a proposal and can be extended by future researchers. Originality: This paper discusses a new research area. The main research area in terms of insider trading is still the stock market, with special focus on the US market. I decided to explore the insider trading phenomenon in the credit default swap market. I only considered contracts that are quoted with reference to European underlying assets. This part of the fi nancial market is attractive in terms of economic research as credit derivatives are more commonly used not only in North America but also in Europe.
Źródło:
Management and Business Administration. Central Europe; 2013, 21, 4(123); 25-54
2084-3356
Pojawia się w:
Management and Business Administration. Central Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The impact of a surprise dividend increase on a stocks performance. the analysis of companies listed on the Warsaw Stock Exchange
Autorzy:
Słoński, T.
Zawadzki, B.
Powiązania:
https://bibliotekanauki.pl/articles/406506.pdf
Data publikacji:
2012
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
effect of a dividend announcement
event study analysis
Opis:
The reaction of marginal investors to the announcement of a surprise dividend increase has been measured. Although field research is performed on companies listed on the Warsaw Stock Exchange, the paper has important theoretical implications. Valuation theory gives many clues for the interpretation of changes in dividends. At the start of the literature review, the assumption of the irrelevance of dividends (to investment decisions) is described. This assumption is the basis for up-to-date valuation procedures leading to fundamental and fair market valuation of equity (shares). The paper is designed to verify whether the market value of stock is immune to the surprise announcement of a dividend increase. This study of the effect of a surprise dividend increase gives the chance to partially isolate such an event from dividend changes based on long-term expectations. The result of the research explicitly shows that a surprise dividend increase is on average welcomed by investors (an average abnormal return of 2.24% with an associated p-value of 0.001). Abnormal returns are realized by investors when there is a surprise increase in a dividend payout. The subsample of relatively high increases in a dividend payout enables investors to gain a 3.2% return on average. The results show that valuation models should be revised to take into account a possible impact of dividend changes on investors’ behavior.
Źródło:
Operations Research and Decisions; 2012, 22, 2; 45-54
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The issuer and investor credit ratings – the impact on the stock prices
Autorzy:
Chodnicka-Jaworska, Patrycja
Powiązania:
https://bibliotekanauki.pl/articles/583205.pdf
Data publikacji:
2018
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
credit rating
issuer
investor
stock prices
event study
Opis:
The basic goal of the article is to analyse the impact of credit rating changes on the rates of return on banks’ shares, considering the entity that asked for assigning a credit rating. The following hypotheses are proposed: banks’ share prices react stronger to the investor-paid credit rating changes. the strongest impact of the banks’ credit rating changes is observed for a downgrade, for both the issuer and the investor credit ratings, while a stronger significant reaction is observed after the moment of publication. The analysis was prepared on the Thomson Reuters Database. The analysis was carried out on data from the years 1980 to 2015, for banks from the European countries, by using event study methods.
Źródło:
Prace Naukowe Uniwersytetu Ekonomicznego we Wrocławiu; 2018, 519; 40-52
1899-3192
Pojawia się w:
Prace Naukowe Uniwersytetu Ekonomicznego we Wrocławiu
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sovereign credit ratings and CDS spreads in Emerging Europe
Autorzy:
Dopierała, Łukasz
Ilczuk, Daria
Wojciechowski, Liwiusz
Powiązania:
https://bibliotekanauki.pl/articles/22444414.pdf
Data publikacji:
2020
Wydawca:
Instytut Badań Gospodarczych
Tematy:
credit rating agencies
Emerging Europe
CDS
event study
Opis:
Research background: Sovereign credit ratings play an important role in determining any country?s access to the international debt market. During the global financial crisis and the European debt crisis, credit rating agencies were harshly criticized for the timing of their announcements regarding ratings downgrades and the ranges of those downgrades. Therefore, it is worth considering whether the sovereign credit rating is still a useful benchmark for investors. Purpose of the article: This article examines whether credit rating agencies still provide financial markets with new information about the solvency of governments in Emerging Europe countries. In addition, it describes the differences in the effect of particular types of rating events on financial markets and the impact of individual agencies on the market situation. Our study also focuses on evaluating these occurrences at different stages of the business cycle. Methods: This article uses data about ratings events that took place between 2008 and 2018 in 17 Emerging Europe economies. We took into consideration positive, neutral, and negative events related to ratings changes and the outlooks reported by Fitch Ratings, Moody?s, and Standard & Poor?s. We used a methodology based on event studies. In addition, we performed Wilcoxon signed-ranks test and used a logit model to determine the usefulness of cumulative adjusted credit default swap (CDS) spread changes in predicting the direction of ratings changes. Findings & Value added: Our research provides evidence that the CDS market reflects information regarding government issuers up to three months before ratings downgrades are announced. Information reported to the market by ratings agencies is only relevant in the short timeframe surrounding ratings downgrades and upgrades. However, positive credit rating changes convey more information to the market. We also found strong evidence that, in the post-crisis period, credit ratings provide markets with less information.
Źródło:
Equilibrium. Quarterly Journal of Economics and Economic Policy; 2020, 15, 3; 419-438
1689-765X
2353-3293
Pojawia się w:
Equilibrium. Quarterly Journal of Economics and Economic Policy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Changes in the impact of US macroeconomic news on financial markets the example of the Warsaw Stock Exchange
Autorzy:
Gurgul, Henryk
Hastenteufel, Jessica
Wójtowicz, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/1917113.pdf
Data publikacji:
2021-12-08
Wydawca:
Główny Urząd Statystyczny
Tematy:
event study
macroeconomic announcements
intraday data
Warsaw Stock Exchange
Opis:
Due to the high importance of the American economy, in the past, announcements of US macroeconomic data were shown to have a significant impact on financial markets in general, and on European stock markets in particular. However, as this effect may vary in time, this paper examines the changes in the impact of US macroeconomic news on the WIG20, the main index of the Warsaw Stock Exchange. Based on intraday data from 2004- 2019 we study the changes in significance and in the strength of the reaction of WIG20 to announcements of unexpected values of 13 indicators describing the American economy. On the basis of the event study analysis, we describe the reaction of the WIG20 index in the first few minutes after these kinds of announcements.
Źródło:
Statistics in Transition new series; 2021, 22, 4; 41-58
1234-7655
Pojawia się w:
Statistics in Transition new series
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ opublikowanej rekomendacji na reakcję inwestorów
Investors’ Reaction to a Published Recommendation
Autorzy:
Polak, Kamil
Powiązania:
https://bibliotekanauki.pl/articles/2185133.pdf
Data publikacji:
2018-07-30
Wydawca:
Uniwersytet Warszawski. Wydawnictwo Naukowe Wydziału Zarządzania
Tematy:
zwyżkowa stopa zwrotu
analiza zdarzeń
abnormal returns
event study
Opis:
Celem artykułu jest analiza wpływu opublikowanych rekomendacji giełdowych na zachowanie się kursu akcji spółek notowanych na Warszawskiej Giełdzie Papierów Wartościowych wchodzących w skład indeksu WIG20. Badaniu poddano 364 depesze o wydaniu rekomendacji w latach 2015–2016 opublikowane na stronie www.infostrefa.com. W badaniu posłużono się klasyczną analizą zdarzeń w celu określenia wpływu danego zdarzenia na zachowanie się kursów akcji.
The aim of the research was to analyze the influence of published stock market recommendations on the behavior of share prices of companies listed on the Warsaw Stock Exchange in the WIG20 index. The presented research examined 364 recommendations from January 2015 to December 2016. The analysis was carried out using the event study methodology to determine the impact of a given event on the behavior of share prices.
Źródło:
Studia i Materiały; 2018, 1(27) cz. 2; 127-135
1733-9758
Pojawia się w:
Studia i Materiały
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reakcja inwestorów giełdy hiszpańskiej na zamknięcie granic. Weryfikacja za pomocą metodyki analizy zdarzeń
Testing the Reaction of Spanish Exchange Market with the Use of Event Study
Autorzy:
Ulmann, Kamila
Roszkowski, Filip
Powiązania:
https://bibliotekanauki.pl/articles/2033976.pdf
Data publikacji:
2021-11-05
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
event study
behavioral economics
behavioral finance
irrationality
capital market
Opis:
The purpose of the article/hypothesis: The aim of the article is to examine the significance of the reaction of stock exchange investors in that country to the publication of information about the reintroduction of border controls in order to limit the movement of people, especially foreigners. The article discusses issues related to economics and behavioral finance, paying special attention to the irrationality of decisions, discussed by many authors, under the influence of various factors. Methodology: In the case of the empirical study, event analysis methodologies were applied, using abnormal and cumulative abnormal rates of return. Results of the research: The results of a detailed analysis of events, based on overnormative single-period logarithmic rates of return and cumulative over-normative single-period logarithmic rates of return for an event, showed an interesting case contradicting the thesis on irrationality of investor behavior in the capital market, while questioning the efficient market hypothesis.
Źródło:
Finanse i Prawo Finansowe; 2021, 4, 32; 83-96
2391-6478
2353-5601
Pojawia się w:
Finanse i Prawo Finansowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Can the publication of annual financial reports become an opportunity for insider trading?
Autorzy:
Suliga, M.
Powiązania:
https://bibliotekanauki.pl/articles/108412.pdf
Data publikacji:
2015
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
market abuse detection
insider trading
event study
GARCH process
Opis:
Illegal insider trading is a problem that involves most of financial markets. Unusual abnormal returns as well as increased trading volumes observed ahead of price sensitive information can be signals of this type of market abuse behavior. In this paper, I study the occurrence of insider trading on the Warsaw Stock Exchange. I verify if publications of annual financial reports of WIG issuers can be preceded by this phenomenon. The study includes reports from the period between 1 January, 2010, and 29 May, 2014. In order to define abnormal returns, I suit the GARCH process to daily returns and use event-study analysis. Potential insider trading behaviors are found with the use of two-day cumulative abnormal returns in a first step and with the use of daily abnormal returns afterwards. The publications that are marked with potential informed price movements are analyzed for the presence of extremely high abnormal trading volumes, which can be additional signals of market abuse.
Źródło:
Managerial Economics; 2015, 16, 1; 77-89
1898-1143
Pojawia się w:
Managerial Economics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Competitors’ Response to a Bankruptcy Filing Announcement Made by a Stock-Listed Company Depending on Sector Characteristics
Autorzy:
Krzeczewska, Olga
Powiązania:
https://bibliotekanauki.pl/articles/1836550.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
contagion effect
competitive effect
information transfer
bankruptcy filing
event study
Opis:
The main aim of the article is to determine how the bankruptcy filing announcement of a stock listed company affects the market valuation of its competitors, depending on sector characteristics. An event study was conducted on the example of returns to shares of companies comprised in the WIG index and operating in 9 sectors. It is indicated that the bankruptcy filing announcement is quickly (within one day) incorporated into the share prices of competitors of the announcing firm. It is confirmed that the direction of market reaction toward share prices of competitors is differentiated by the characteristics of the sector. Averaged results show that the competitive effect occurs in the sectors with a high level of concentration, while the contagion effect is noted in sectors with low concentration. Companies from sectors characterized by low leverage experience the competitive effect. No information transfer was found for a group of companies in sectors characterized by high leverage.
The main aim of the article is to determine how the bankruptcy filing announcement of a stock listed company affects the market valuation of its competitors, depending on the sector characteristic. An event study was conducted on the example of returns to shares of companies comprised in the WIG index and operating in 9 sectors. It is indicated that the bankruptcy filing announcement is quickly (within one day) incorporated into the share prices of competitors of the announcing firm. It is confirmed that the direction of market reaction toward share prices of competitors is differentiated by the characteristics of the sector. Averaged results show that the competitive effect occurs in the sectors with a high level of concentration, while the contagion effect is noted in sectors with low concentration. Companies from sectors characterized by low leverage experience the competitive effect. No information transfer was found for a group of companies in sectors characterized by high leverage.
Źródło:
Annales Universitatis Mariae Curie-Skłodowska, sectio H – Oeconomia; 2021, 55, 1; 31-40
0459-9586
Pojawia się w:
Annales Universitatis Mariae Curie-Skłodowska, sectio H – Oeconomia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Short- and Long-Term Effects of Innovations on Enterprise Market Value: A Case of the Tourism Industry
Autorzy:
Szutowski, Dawid
Bednarska, Marlena A.
Powiązania:
https://bibliotekanauki.pl/articles/475040.pdf
Data publikacji:
2014
Wydawca:
Fundacja Upowszechniająca Wiedzę i Naukę Cognitione
Tematy:
innovation
market value
event study
calendar time portfolio
tourism enterprise
Opis:
Innovations seem crucial for contemporary enterprises willing to achieve the objective of increasing firm’s value. The aim of this paper is to examine, both conceptually and empirically, the relationship between innovations and tourism enterprises’ market value. Tourism sector was taken into consideration in order to fulfill the existing research gap. This focused paper was based on relevant market data. Event study and calendar time portfolio approaches were chosen to test investors’ responses to innovation announcements. Six tourism companies listed on the Main Market of Warsaw Stock Exchange were examined within the six years research period and 34 innovation announcements were identified. Polish Press Agency database and Warsaw Stock Exchange databases were used to collect data. Results indicate that innovations affected positively investors’ valuation of tourism enterprises. The average event day market value change equaled 0.63% and differed considerably from the one-year one of 3.02% meaning that investors adjust their initial reaction over time. Initially investors reacted mostly to marketing, distributional and external relations innovations while within one-year period they attributed the most value to marketing and external relations ones.
Źródło:
Journal of Entrepreneurship, Management and Innovation; 2014, 10, 4; 45-64
2299-7075
2299-7326
Pojawia się w:
Journal of Entrepreneurship, Management and Innovation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new perspective of the day-of-the-week effect on Bitcoin returns: evidence from an event study hourly approach
Autorzy:
Miralles-Quirós, José Luis
Miralles-Quirós, María Mar
Powiązania:
https://bibliotekanauki.pl/articles/19322600.pdf
Data publikacji:
2022
Wydawca:
Instytut Badań Gospodarczych
Tematy:
Bitcoin
event study
day-of-the-week effect
hourly data
Opis:
Research background: A current strand of the financial literature is focusing on detecting inefficiencies, such as the day-of-the-week effect, in the cryptocurrency market. However, these studies are not considering that there are no daily closes in this market, and it is possible to trade cryptocurrencies on a continuous basis. This fact may have led to biases in previous empirical results. Purpose of the article: We propose to analyse the day-of-the-week effect on the Bitcoin from an alternative perspective where each hourly data in a day is considered an event. Focusing on that objective, we employ hourly closing prices for Bitcoin which are taken from the Kraken exchange, one of the world leading exchanges and trading platforms in the cryptocurrency markets, for the period spanning from January 2016 to December 2021. Methods: Contrary to the previous empirical evidence, we do not calculate daily returns, but rather the first stage of our proposed approach is devoted to analysing the hourly mean returns for each of the 24 hours of the day for each day of the week. We look for statistically significant hourly mean returns that could advance the importance of the hourly differentiation in the Bitcoin market. In a second stage, we calculate different post-event cumulative returns which are defined as the change in log prices over a time interval. Finally, we propose different investment strategies simply based on the significant hourly mean returns we obtain and we evaluate their performance in terms of the Sharpe ratio. Findings & value added: We contribute to the debate about the degree of Bitcoin's market efficiency by providing an alternative methodology based on an event study hourly approach. Furthermore, we provide evidence that by investing in different post-event hourly windows it is possible to outperform the classic buy-and-hold strategy.
Źródło:
Oeconomia Copernicana; 2022, 13, 3; 745-782
2083-1277
Pojawia się w:
Oeconomia Copernicana
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Credit Rating Changes and the Bond Market – the Impact of Economic Development
Zmiana credit ratingu i rynek obligacji – wpływ poziomu rozwoju gospodarczego
Autorzy:
Chodnica-Jaworska, Patrycja
Powiązania:
https://bibliotekanauki.pl/articles/1921935.pdf
Data publikacji:
2019-03-13
Wydawca:
Uniwersytet Warszawski. Wydawnictwo Naukowe Wydziału Zarządzania
Tematy:
credit rating
bond market
event study
rynek obligacji
metoda analizy zdarzeń
Opis:
The aim of the paper is to examine the impact of credit rating changes of a country on bond yields, taking into account this country’s level of economic development. The following hypothesis has been formulated following a literature review: Bond yields react more strongly to credit rating changes in developed economies. The impact is greatest in the case of credit rating downgrades both in developed and developing economies; in developing economies, both upgrades and downgrades affect bond yields. Event study methodology has been applied to analyse Thomson Reuters’s database of 225 countries, published daily between 1980 and 2016. Research results may be used to analyse the influence of information published by lesser agencies on investors’ decisions. The analysis encompasses the impact of credit rating changes published by smaller agencies, which has yet to be subject to scholarly investigation.
Celem artykułu była analiza wpływu zmian credit ratingów krajów na rentowność obligacji przy uwzględnieniu poziomu rozwoju gospodarczego krajów. Postawiono hipotezę po przeprowadzeniu przeglądu literaturowego, tj.: Rentowności obligacji silniej reagują na zmiany credit ratingów w przypadku krajów rozwiniętych gospodarczo. Wpływ jest największy w przypadku obniżenia ratingu kredytowego zarówno w krajach rozwiniętych, jak i rozwijających się. Metodologia badania zdarzeń została wykorzystana do analizy danych dziennych pochodzących z bazy danych Thomson Reuters dla 225 krajów dla okresu 1980–2016. Rentowności obligacji silniej reagują na zmiany ratingów w gospodarkach rozwiniętych. Wpływ ten jest największy w przypadku obniżenia ratingu, zarówno w rozwiniętych, jak i rozwijających się gospodarkach; w krajach rozwijających się zarówno podwyżki, jak i obniżki ratingów wpływają na rentowność obligacji. Wyniki badań mogą być wykorzystane do analizy wpływu informacji publikowanych przez mniejsze agencje na decyzje inwestorów. Analiza obejmuje wpływ zmian ratingów publikowanych przez mniejsze agencje, które nie podlegały dotychczas badaniom naukowym.
Źródło:
Problemy Zarządzania; 2018, 3/2018 (76); 176-189
1644-9584
Pojawia się w:
Problemy Zarządzania
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The reaction of investors to analyst recommendations of stocks listed on the WIG20 index
Autorzy:
Suliga, M.
Powiązania:
https://bibliotekanauki.pl/articles/108276.pdf
Data publikacji:
2016
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
abnormal returns
event-study methodology
recommendation changes
linear regression with categorical variables
Opis:
Analyst recommendations are one of the types of information whose appearance on the market can have an influence on security prices. In this paper, I study the impact of analyst recommendations on stocks listed on the WIG20 Index, using event-study methodology and linear regression models. The dataset contains 576 absolute recommendations published from the 1st of January 2012 to the 1st of September 2015 by various analyst houses. The prefatory study researches price reaction to positive, neutral, and negative recommendations separately. Subsequently, to check if investor reaction depends on a change in the level of recommendation, corresponding research is repeated for events clustered in nine groups defined in terms of possible level changes. Linear regression models with categorical variables are used in search of additional factors affecting investor reactions. Changes in the level of recommendation, size of the company, and reputation of brokerage house represent explanatory variables. Preliminary results point out that the direction of investor reaction is generally consistent with the information contained in the recommendation, and that the reaction of the market seems to be stronger in the case of positive events than in the case of negative ones. The analysis of recommendation changes reflects more-detailed dependents. In particular, the interpretation of a neutral recommendation depends strongly on the level of the previous recommendation. If it represents growth from SELL or REDUCE, the reaction is positive, while in the case of a drop from ACCUMULATE or BUY, it leads to negative abnormal returns. This relationship is additionally confirmed by results from the linear regression models. The models show the size of the firm as a significant factor that has an influence on the reaction to a recommendation: the smaller the firm, the stronger the reaction.
Źródło:
Managerial Economics; 2016, 17, 1; 123-148
1898-1143
Pojawia się w:
Managerial Economics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Price reversal as potential expiration day effect of stock and index futures: evidence from Warsaw Stock Exchange
Autorzy:
Suliga, M.
Powiązania:
https://bibliotekanauki.pl/articles/108344.pdf
Data publikacji:
2017
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
futures contracts
expiration day effects
price reversal
abnormal returns
event study methodology
Opis:
This paper studies an impact of futures expiration days on the Polish equity market. From three potential expiration effects appearing in the literature (namely, the increased trading volume of underlying assets, increased volatility of their returns, and price reversal after expiration), the latest one is researched in detail for expiration days of futures on the WIG20 index, the mWIG40 index, and individual stocks. The data covers the period from January 2001 to December 2016. The phenomenon of price reversal is studied with the use of regression models, price reversal measures, and event study methodology. The results obtained for expiration days are compared with the results from non-expiration days to check whether a potential price reversal can be interpreted as an effect of expiration. No price reversals after futures expirations were found in the returns of the WIG20 nor mWIG40 indexes. In the case of individual stocks, results from all of the three methods support the assumption that price reversal occurs after expiration. The reversal is immediate and is reflected in overnight returns more than in daily returns.
Źródło:
Managerial Economics; 2017, 18, 2; 201-225
1898-1143
Pojawia się w:
Managerial Economics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The “Magic Action” of Stock Splits: Evidence from the Warsaw Stock Exchange 2003–2017
Autorzy:
Podgórski, Błażej
Pasierbek, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/1810553.pdf
Data publikacji:
2020-04-16
Wydawca:
Akademia Leona Koźmińskiego w Warszawie
Tematy:
stock split
general meeting of shareholders
event study
capital markets
market stock reaction
Opis:
Purpose: Many researchers claim that split has a positive effect on stock returns. However, if we observe more closely, we notice that this is only an accounting procedure. Therefore, the question arises as to whether stock prices should change. To answer this problem, we checked the market reaction to the division of shares on the Warsaw Stock Exchange. Methodology: To verify our hypotheses, we used the event study analysis. Based on the Sharpe market model, we assumed that the price of the asset determines systematic risk and specific risk. Findings: On the basis of conducted analyses, we found a positive market reaction to the first split information, while the announcement of General Meeting of Shareholders (GMS) resolutions generated a price correction. Moreover, split events initially caused an increase in abnormal returns. The research results are consistent with the efficient market hypothesis. Research limitations: The sample size does not give an opportunity to check the impact of economic cycles. During the last 15 years, we found only 75 events of splits without any disruption event. Originality: Analysis of three dates: information about the planned general meeting of shareholders regarding the split, publication of decisions taken at the general meeting, and the day of the split.
Źródło:
Central European Management Journal; 2020, 28(1); 66-80
2658-0845
2658-2430
Pojawia się w:
Central European Management Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
ESTIMATION OF RISK NEUTRAL MEASURE FOR POLISH STOCK MARKET
Autorzy:
Kliber, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/599503.pdf
Data publikacji:
2014
Wydawca:
Wyższa Szkoła Informatyki i Zarządzania z siedzibą w Rzeszowie
Tematy:
risk-neutral pricing
option-implied density
risk aversion
real-world measure
event study
Opis:
In the paper we present the application of risk neutral measure estimation in the analysis of the index WIG20 from Polish stock market. The risk neutral measure is calculated from the process of the options on that index. We assume that risk neutral measure is the mixture of lognormal distributions. The parameters of the distributions are estimated by minimizing the sum of squares of pricing errors. Obtained results are then compared with the model based on a single lognormal distribution. As an example we consider changes in risk neutral distribution at the beginning of March 2014, after the outbreak of political crisis in the Crimea.
Źródło:
Finansowy Kwartalnik Internetowy e-Finanse; 2014, 10, 2; 28-37
1734-039X
Pojawia się w:
Finansowy Kwartalnik Internetowy e-Finanse
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ daty premiery na stopy zwrotu z inwestycji w akcje spółek z branży gier wideo notowanych na GPW w Warszawie
The Influence of Date of Premiere on Stocks Rates of Return of Video Games Companies Listed on The Warsaw Stock Exchange
Autorzy:
Karasiński, Jacek
Powiązania:
https://bibliotekanauki.pl/articles/1921912.pdf
Data publikacji:
2019-03-13
Wydawca:
Uniwersytet Warszawski. Wydawnictwo Naukowe Wydziału Zarządzania
Tematy:
analiza zdarzeń
giełda
akcje
gry wideo
event study
stock exchange
stocks
video games
Opis:
Celem autora niniejszego artykułu jest zbadanie, czy wybrane zdarzenia charakterystyczne dla spółek z branży gier wideo wywierają statycznie istotny wpływ na stopy zwrotu z inwestycji w akcje. Zdarzeniami, których wpływ na ceny akcji analizowano, były ustalenie daty premiery gry oraz przesunięcie daty premiery gry. Autor stara się odpowiedzieć na pytanie, czy w związku z cenami akcji pozostaje również czas na oczekiwanie premiery gry po jej ogłoszeniu bądź odroczeniu. W celu zebrania i wyselekcjonowania jak najliczniejszej próby przeprowadzono analizę raportów bieżących wszystkich czternastu spółek z branży gier wideo notowanych na Rynku Głównym GPW w Warszawie i na rynku w NewConnect od 4.01.2010 do 31.07.2017 roku. Stwierdzono, że wystąpienie przytoczonych dwóch typów zdarzeń nie wywiera statystycznie istotnego wpływu na stopy zwrotu akcji. Jedynie w przypadku zdarzeń zaklasyfikowanych jako przesunięcie daty premiery gry można było dostrzec występowanie zależności stopy zwrotu od czasu pozostającego do premiery, przejawiającej się w przeciętnym zwiększaniu strat wraz z wydłużaniem okresu, na jaki premierę gry odroczono.
The purpose of this article is to examine whether the selected events specific for video game companies have a statistically significant impact on stock rates of return. The analysed events which impact on stock rates of return were: setting a date of a video game premiere and postponement of a video game premiere. Moreover, the study tries to provide an answer to the question of whether the time of awaiting for a game premiere after its setting or postponement is related to stock prices. In order to collect and select the most numerous sample, an analysis of current reports of all fourteen video game companies listed on WSE Main Market and NewConnect Market in the period from January 4th, 2010 to July 31st, 2017 was carried out. The conducted study allowed for stating that the occurrence of the two event types mentioned does not have a statistically significant impact on stock rates of return. Only in the case of events classified as postponement of a video game premiere could a relation between the rate of return and the period of postponement be spotted. Such a relation is reflected as increased losses along with the postponement period extension.
Źródło:
Problemy Zarządzania; 2018, 3/2018 (76); 82-96
1644-9584
Pojawia się w:
Problemy Zarządzania
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
THE INDEX EFFECT ON THE POLISH EQUITY MARKET BASED ON THE EXAMPLE OF THE WIG20 INDEX
EFEKT INDEKSOWY NA POLSKIM RYNKU AKCJI NA PRZYKŁADZIE INDEKSU WIG20
Autorzy:
Miziołek, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/659280.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
efekt indeksowy
studium wydarzeń
indeks WIG20
index effect
event study
WIG20 index
Opis:
Celem artykułu jest zbadanie, na przykładzie spółek których akcje mają zostać włączone do portfela indeksu WIG20, czy na polskim rynku akcji występuje efekt indeksowy. Na podstawie studium wydarzeń przeprowadzonego w latach 2010–2014 (I kwartał) wykazano występowanie anormalnych dodatnich stóp zwrotu nowych uczestników indeksu pojawiających się przede wszystkim jeszcze przed ogłoszeniem informacji o nowym składzie indeksu. Skumulowane anormalne stopy zwrotu zanotowano w przypadku 9 spośród 11 przeanalizowanych spółek, zaś średnia skumulowana anormalna stopa zwrotu wyniosła 3,38%. Oznacza to, że na polskim rynku akcji, podobnie jak na zbadanych wcześniej rynkach zagranicznych, występuje anomalia w postaci efektu indeksowego.
The aim of this article is to examine, on the example of companies whose shares are to be included into the WIG20 index portfolio, whether the index effect occurs on the Polish stock market. Based on the study event conducted in 2010–2014 (first quarter) it was demonstrated that abnormal positive returns of new index participants occurred mainly before the announcement of the information about the new index composition. Cumulative abnormal returns were observed for 9 out of 11 analysed companies and the average cumulative abnormal return amounted to 3.38%. This means that on the Polish stock market, like on the foreign markets examined earlier, there is an anomaly in the form of the index effect.
Źródło:
Acta Universitatis Lodziensis. Folia Oeconomica; 2015, 1, 310
0208-6018
2353-7663
Pojawia się w:
Acta Universitatis Lodziensis. Folia Oeconomica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Intraday event study. The impact of US macroeconomic news on WIG20
Analiza zdarzeń dla danych śróddziennych. Wpływ ogłoszeń amerykańskich danych makroekonomicznych na WIG20
Autorzy:
Wójtowicz, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/587944.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
Event study
Intraday data
News announcements
WSE
Analiza zdarzeń
Dane śróddzienne
GPW
Ogłoszenia danych
Opis:
In this paper we examine the impact of unexpected news about the US economy on stock prices on the Warsaw Stock Exchange. Previous studies from developed markets indicate, that macroeconomic news announcements are quickly reflected in stock prices. Hence, we study the reaction of 1 minute returns of WIG20, which describes prices of the largest and the most liquid stocks on WSE. Empirical analysis performed by means of event study shows the significant response of WIG20 just after news announcements. Additionally, this response remains visible up to three minutes after news release. However, the strength and duration of the news impact depends on the announced macroeconomic indicator.
W pracy zaprezentowano badanie wpływu niespodziewanych informacji, dotyczących gospodarki USA, na ceny akcji spółek notowanych na Giełdzie Papierów Wartościowych w Warszawie. Wcześniejsze badania dotyczące reakcji rynków rozwiniętych wskazują, że ceny akcji bardzo szybko reagują na ogłoszenia amerykańskich danych makroekonomicznych. Dlatego, zbadana została reakcja 1-minutowych stóp zwrotu indeksu WIG20, który opisuje zachowanie się cen akcji najbardziej płynnych i największych spółek. Badanie przeprowadzone z wykorzystaniem analizy zdarzeń potwierdza, że istotna reakcja WIG20 występuje tuż po ogłoszeniu danych makroekonomicznych. Ponadto, pozostaje ona widoczna, aż do trzech minut po ogłoszeniu. Siła oraz czas trwania reakcji zależą od tego, którego ze wskaźników dotyczy ogłoszenie.
Źródło:
Studia Ekonomiczne; 2016, 295; 109-118
2083-8611
Pojawia się w:
Studia Ekonomiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
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