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Does idiosyncratic volatility matter at the global level?

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  • Umutlu, Mehmet

Abstract

I test the existence of a time-series relationship between the aggregate idiosyncratic volatility and the market index return at the global level by introducing various global measures of aggregate idiosyncratic volatility. I offer four definitions of aggregate global idiosyncratic volatility (GIVOL) based on factor models and two other definitions, which are free from factor models. Regardless of whether I use model-dependent or model-independent measures, I find no evidence of a robust and significant relation between the aggregate GIVOL and the global market return. This result is valid for four different sub-periods and four different subsamples reflecting the different states of the economy and the stock market. It is also robust to the inclusion of several control variables. As global idiosyncratic volatility is not a priced factor in the intertemporal asset pricing framework, the results indicate that international diversification is still effective in eliminating idiosyncratic volatility despite the globalization process.

Suggested Citation

  • Umutlu, Mehmet, 2019. "Does idiosyncratic volatility matter at the global level?," The North American Journal of Economics and Finance, Elsevier, vol. 47(C), pages 252-268.
    • Handle: RePEc:eee:ecofin:v:47:y:2019:i:c:p:252-268
    DOI: 10.1016/j.najef.2018.12.015
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    3. Zaremba, Adam & Long, Huaigang & Karathanasopoulos, Andreas, 2019. "Short-term momentum (almost) everywhere," Journal of International Financial Markets, Institutions and Money, Elsevier, vol. 63(C).
    4. Long, Huaigang & Zaremba, Adam & Zhou, Wenyu & Bouri, Elie, 2022. "Macroeconomics matter: Leading economic indicators and the cross-section of global stock returns," Journal of Financial Markets, Elsevier, vol. 61(C).
    5. Yu, Huaibing, 2024. "Why isn't composite equity issuance favored by the stock market? A risk-based explanation for the anomaly," International Review of Financial Analysis, Elsevier, vol. 94(C).
    6. Zaremba, Adam & Kizys, Renatas & Raza, Muhammad Wajid, 2020. "The long-run reversal in the long run: Insights from two centuries of international equity returns," Journal of Empirical Finance, Elsevier, vol. 55(C), pages 177-199.
    7. Umutlu, Mehmet & Bengitöz, Pelin, 2020. "The cross-section of industry equity returns and global tactical asset allocation across regions and industries," International Review of Financial Analysis, Elsevier, vol. 72(C).
    8. Zaremba, Adam & Kizys, Renatas & Tzouvanas, Panagiotis & Aharon, David Y. & Demir, Ender, 2021. "The quest for multidimensional financial immunity to the COVID-19 pandemic: Evidence from international stock markets," Journal of International Financial Markets, Institutions and Money, Elsevier, vol. 71(C).
    9. Zaremba, Adam & Umutlu, Mehmet & Karathanasopoulos, Andreas, 2019. "Alpha momentum and alpha reversal in country and industry equity indexes," Journal of Empirical Finance, Elsevier, vol. 53(C), pages 144-161.
    10. Zaremba, Adam & Cakici, Nusret & Demir, Ender & Long, Huaigang, 2022. "When bad news is good news: Geopolitical risk and the cross-section of emerging market stock returns," Journal of Financial Stability, Elsevier, vol. 58(C).
    11. Yi-Shu Wang & Ting-Chen & Zhen-Jia-Liu, 2020. "The Relationship between Accounting Information Quality and Idiosyncratic Volatility: An Empirical Study on Chinese A-Share Listed Companies," Eurasian Journal of Business and Management, Eurasian Publications, vol. 8(2), pages 150-166.

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    More about this item

    Keywords

    Global idiosyncratic volatility; Aggregate idiosyncratic volatility; World market return; International diversification;
    All these keywords.

    JEL classification:

    • G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions
    • G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates
    • G15 - Financial Economics - - General Financial Markets - - - International Financial Markets
    • F30 - International Economics - - International Finance - - - General

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