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    The impact of the Russia–Ukraine crisis on oil and gas shares: an event study approach
    (Springer, 2024) Küçükçolak, Recep Ali; Küçükçolak, Necla İlter; Küçükoğlu, Sami
    In this study, the efect of the Russia–Ukraine crisis on the energy companies traded in the stock exhanges of European and Asian countries which import oil and natural gas from Russia as well as Russia’s strategic rival USA, is examined by event study method. The sample used in the research consists of the stock market data of 10 countries which are labeled as the “Oil and Gas Producers” via DataStream. The data in question consist of the stocks and major index values of 34 active energy companies, which are traded in the stock exchanges of the countries subject to the study and are among the top 5 companies with the largest market capitalization. As a result of the analysis made on the basis of each country, the shock of the tension between Russia and Ukraine turning into a hot confict during the frst event window period, caused an extreme reaction in the European and Asian stock markets, which was discussed in the study and positive abnormal returns emerged. However, the energy companies in the US stock market remained far from the environment of fear and anxiety and preserved their market activities. In the second event window period, because of Russia’s pre-announcement of natural gas sales in rubles, the stocks in the study quickly adapted this information, which was shared with the public. It was refected to their prices and the efciency of their markets was ensured.
  • Küçük Resim
    Öğe
    Kurumsal yönetim derecelendirmesi ve pay değeri ilişkisi: Borsa İstanbul örneği
    (Sosyoekonomi Derneği, 2022) Küçükoğlu, Sami; Küçükçolak, Necla İlter; Küçükçolak, Recep Ali
    This study aims to analyse the effect of corporate governance ratings on the stock values of publicly traded companies in the Corporate Governance Index (XKURY of Borsa Istanbul (BIST) operating in Turkey. In this context, the rating scores of the companies included in the Corporate Governance Index for the 2016-2020 periods were determined. In the study in which the Paired Dependent Sample t-Test was used as the research method, the differences in the shared values between the dates thirty days before and thirty days after the announcement of the ratings were examined. According to the results obtained, it was observed that there was a statistically significant effect on the stock values of companies that implemented corporate governance principles in 2016, 2017, and 2019, but no statistically significant effect was observed for these years due to the systematic risks that occurred at the macro level in 2018 and 2020.