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The impact of economic policy uncertainty and commodity prices on CARB country stock market volatility


  • Basher, Syed Abul
  • Haug, Alfred A.
  • Sadorsky, Perry


This paper investigates the impact of economic policy uncertainty shocks and shocks to commodity prices on the realized stock market volatility of the CARB (Canada, Australia, Russia, and Brazil) countries. The CARB countries are important countries to study because they are major commodity exporters. The analysis is conducted using sign restricted impulse response functions (IRFs) and structural vector-autoregressive IRFs. There are some common results across the CARB countries. A positive shock to commodity prices lowers realized stock market volatility while a shock to economic policy uncertainty has a significant positive impact on realized stock market volatility. The magnitudes of the initial impact of these two shocks are similar. Shocks to global economic activity and short-term interest rates lower realized stock market volatility. The impacts of these shocks are more pronounced in models that use sign restrictions. These results have implications for investors and policy makers.

Suggested Citation

  • Basher, Syed Abul & Haug, Alfred A. & Sadorsky, Perry, 2019. "The impact of economic policy uncertainty and commodity prices on CARB country stock market volatility," MPRA Paper 96577, University Library of Munich, Germany.
  • Handle: RePEc:pra:mprapa:96577

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    Economic policy uncertainty; commodity prices; stock market volatility; sign restricted VAR.;

    JEL classification:

    • E60 - Macroeconomics and Monetary Economics - - Macroeconomic Policy, Macroeconomic Aspects of Public Finance, and General Outlook - - - General
    • G15 - Financial Economics - - General Financial Markets - - - International Financial Markets
    • G18 - Financial Economics - - General Financial Markets - - - Government Policy and Regulation

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