Browsing by Subject "Return volatility"
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Item Open Access The degree of financial liberalization and aggregated stock-return volatility in emerging markets(Elsevier, 2010) Umutlu, M.; Akdeniz, L.; Altay-Salih, A.In this study, we address whether the degree of financial liberalization affects the aggregated total volatility of stock returns by considering the time-varying nature of financial liberalization. We also explore channels through which the degree of financial liberalization impacts aggregated total volatility. We document a negative relation to the degree of financial liberalization after controlling for size, liquidity, country, and crisis effects, especially for small and medium-sized markets. Moreover, the degree of financial liberalization transmits its negative impact on aggregated total volatility through aggregated idiosyncratic and local volatilities. Overall, our results provide evidence in favor of the view that the broadening of the investor base due to the increasing degree of financial liberalization causes a reduction in the total volatility of stock returns.Item Open Access Does ADR listing affect the dynamics of volatility in emerging markets?(Univerzita Karlova v Praze, 2010) Umutlu, M.; Altay-Salih, A.; Akdeniz, L.This paper analyzes the time-series variation in the return volatility of non-US stocks from emerging markets that are cross-listed on US exchanges. Unlike previous studies in the cross-listing literature, return volatility is modeled using conditional heteroscedasticity models. We find that firms' exposure to risks such as local and global market betas remain unchanged after cross-listing. Moreover, we do not identify notable changes in the dynamics of the volatility of cross-listed stocks after cross-listing except for leverage effects. We further show that the mean level of conditional variance is not affected after cross-listing. Thus, our results provide counter-evidence to the belief that foreign investor participation drives volatility upward.Item Open Access The effect of news on return volatility and volatility persistence: The Turkish economy during crisis(Taylor & Francis Group, 2014) Solakoğlu, M. N.; Demir, N.In this study, we investigate the effect of public information arrival on return volatility for Borsa Istanbul. New information arrival is measured by the number of daily news headlines for Turkey, the United States, and a sample of European countries with close trading ties with Turkey. We classify news headlines by country and type of news. Our findings indicate that, during a recessionary period, new information arrival causes return volatility mostly to decline. Moreover, both economic news and European news cause a significant decline in volatility persistence. However, when news is classified based on origin and type, a larger decline in persistence is observed.Item Open Access News releases and stock market volatility: intraday evidence from borsa Istanbul(Elsevier Inc., 2015) Solakoglu, M. N.; Demir, N.In this study, we investigate the effect of public information arrival on return volatility for Borsa Istanbul (BIST) using intraday, 60-min returns between October 3, 2013 and March 31, 2014. Stock return and return volatility is expected to react to news arrival if such news causes market participants to adjust their portfolios. To measure new information arrival, we count the number of daily news headlines for Turkey, the United States, and a sample of European countries with close trading ties with Turkey. Furthermore, we focus on economic news and particularly on news on real economy and inflation. In addition, along with the BIST100 index, which is the most commonly used market portfolio index, we also utilize Second National Market (SNM) index. Our results show that news arrival influences return volatility negatively, and it has no significant effect on index returns. Moreover, return volatility responds significantly to negative surprises in GDP and inflation announcements. Finally, we do not provide evidence that indicates differences in the usage of information that arrives to the market between BIST100 and SNM investors. © 2015 Elsevier Inc. All rights reserved.