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Dynamic Spillovers from US (Un)Conventional Monetary Policy to African Equity Markets: A Time-Varying Parameter Frequency Connectedness and Wavelet Coherence Analysis

Author

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  • Andrew Phiri

    (Department of Economics, Faculty of Business and Economic Sciences, Nelson Mandela University, Gqeberha 6031, South Africa)

  • Izunna Anyikwa

    (Department of Economics, Faculty of Business and Economic Sciences, Nelson Mandela University, Gqeberha 6031, South Africa)

Abstract

Since the implementation of unconventional monetary policies (UMPs) by the US in response to the global financial crisis (GFC) and the COVID-19 pandemic, there have been increasing concerns that these forward guidance and quantitative easing programmes have had spillover effects on global equity markets. We specifically question whether the implementation of these UMPs have had spillovers to African equities, which have been previously speculated to be decoupled from global markets and shocks. Time-varying-parameter (TVP) frequency connectedness and wavelet coherency methods were used to examine the dynamic time-frequency spillovers between daily time series of the US shadow short rate and African equities returns/volatility between 1 January 2007 and 31 March 2023. On one hand, the TVP frequency connectedness analysis reveals robust long-run spillovers from US monetary policy to African equity markets during specific periods: 2009, 2013, 2020, and 2021. These coincide with instances when the Federal Reserve announced their transition from conventional to unconventional monetary practices and vice versa. On the other hand, the wavelet analysis provides insights into the ‘sign’ of the spillovers, indicating mixed phase dynamics during UMPs responding to the GFC. In contrast, anti-phase or negative co-movements characterize UMPs implemented during the COVID-19 pandemic, implying that these policies increased both returns and volatilities to African equities. Altogether, we conclude that US UMP has increasing deteriorated market efficiency and amplified portfolio risk in African equities whilst during ‘normalization’ periods US monetary policy has little transmission effect.

Suggested Citation

  • Andrew Phiri & Izunna Anyikwa, 2024. "Dynamic Spillovers from US (Un)Conventional Monetary Policy to African Equity Markets: A Time-Varying Parameter Frequency Connectedness and Wavelet Coherence Analysis," JRFM, MDPI, vol. 17(11), pages 1-26, October.
    • Handle: RePEc:gam:jjrfmx:v:17:y:2024:i:11:p:474-:d:1503702
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    References listed on IDEAS

    as
    1. Francis X. Diebold & Kamil Yilmaz, 2009. "Measuring Financial Asset Return and Volatility Spillovers, with Application to Global Equity Markets," Economic Journal, Royal Economic Society, vol. 119(534), pages 158-171, January.
    2. Cui, Baisheng & Li, Jiaqi & Zhang, Yi, 2024. "Asymmetries in the international spillover effects of monetary policy: Based on TGVAR model," The North American Journal of Economics and Finance, Elsevier, vol. 69(PA).
    3. Urom, Christian & Ndubuisi, Gideon & Del Lo, Gaye & Yuni, Denis, 2023. "Global commodity and equity markets spillovers to Africa during the COVID-19 pandemic," Emerging Markets Review, Elsevier, vol. 55(C).
    4. Ahmed Ashour Abdullah & Ahmed Mohamed Hassanien, 2022. "Spillovers of US Unconventional Monetary Policy to Emerging Markets: Evidence from Egypt," International Journal of Economics and Finance, Canadian Center of Science and Education, vol. 14(6), pages 1-1, June.
    5. Tiwari, Aviral Kumar & Abakah, Emmanuel Joel Aikins & Abdullah, Mohammad & Adeabah, David & Sahay, Vinita S., 2024. "Time-varying relationship between international monetary policy and energy markets," Energy Economics, Elsevier, vol. 131(C).
    6. Huang, Jionghao & Chen, Baifan & Xu, Yushi & Xia, Xiaohua, 2023. "Time-frequency volatility transmission among energy commodities and financial markets during the COVID-19 pandemic: A Novel TVP-VAR frequency connectedness approach," Finance Research Letters, Elsevier, vol. 53(C).
    7. Choi, Sun-Yong & Phiri, Andrew & Teplova, Tamara & Umar, Zaghum, 2024. "Connectedness between (un)conventional monetary policy and islamic and advanced equity markets: A returns and volatility spillover analysis," International Review of Economics & Finance, Elsevier, vol. 91(C), pages 348-363.
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