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The Impact of Firm-Specific Public News on Intraday Market Dynamics: Evidence from the Turkish Stock Market

Author

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  • Hasan F. Baklaci
  • Gokce Tunc
  • Berna Aydogan
  • Gulin Vardar

Abstract

This study attempts to discover the intraday firm-specific news announcements and return volatility relation in the Turkish stock market. The GARCH framework is utilized to investigate the impact of firm-specific public news announcements on volatility persistence with and without trading volume. For the majority of the stocks in the sample, the volatility persistence diminishes with the inclusion of firm-specific news, implying that news is impounded rapidly into prices. This effect is more pronounced for larger stocks. When there is no news, the trading volume does not appear to reduce the volatility persistence for the majority of stocks, possibly due to the presence of private information possessed by informed traders.

Suggested Citation

  • Hasan F. Baklaci & Gokce Tunc & Berna Aydogan & Gulin Vardar, 2011. "The Impact of Firm-Specific Public News on Intraday Market Dynamics: Evidence from the Turkish Stock Market," Emerging Markets Finance and Trade, Taylor & Francis Journals, vol. 47(6), pages 99-119, November.
    • Handle: RePEc:mes:emfitr:v:47:y:2011:i:6:p:99-119
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    Cited by:

    1. Massimiliano Caporin & Francesco Poli, 2017. "Building News Measures from Textual Data and an Application to Volatility Forecasting," Econometrics, MDPI, vol. 5(3), pages 1-46, August.
    2. Semen Son Turan, 2014. "Internet Search Volume and Stock Return Volatility: The Case of Turkish Companies," Information Management and Business Review, AMH International, vol. 6(6), pages 317-328.
    3. Ersan, Oguz & Simsir, Serif Aziz & Simsek, Koray D. & Hasan, Afan, 2021. "The speed of stock price adjustment to corporate announcements: Insights from Turkey," Emerging Markets Review, Elsevier, vol. 47(C).

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