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Cryptoization and Volatility of the Exchange Rate in Nigeria

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  • Ayuba Napari

Abstract

This study aims to examine the impact of the cryptocurrency market returns, measured by Bitcoin and stablecoin market index returns, on the volatility of the Nigerian Naira. Noting that cryptocurrency returns are positively related to cryptocurrency adoption, this amounts to testing the impact of cryptoization on the exchange rate volatility of the Nigerian Naira. The study adopts an E-GARCH-X model to test the volatility impact of cryptocurrency returns with several controls using daily data from December 2017 to December 2024. It was found that cryptocurrency returns represented by Bitcoin returns and Stablecoin returns, proxied by a weighted return of the major stablecoins, contribute positively to the volatility of the naira. This result is robust even after accounting for global risk sentiment, the dollar-naira interest rate differential and country risk using the VIX index, Naira NIBOR and SOFR rate difference and the Global X MSCI Nigeria ETF as controls.

Suggested Citation

  • Ayuba Napari, 2026. "Cryptoization and Volatility of the Exchange Rate in Nigeria," Economic Studies journal, Bulgarian Academy of Sciences - Economic Research Institute, issue 1, pages 98-115.
    • Handle: RePEc:bas:econst:y:2026:i:1:p:98-115
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    References listed on IDEAS

    as
    1. Ning, Cathy & Xu, Dinghai & Wirjanto, Tony S., 2015. "Is volatility clustering of asset returns asymmetric?," Journal of Banking & Finance, Elsevier, vol. 52(C), pages 62-76.
    2. Shank, Corey A. & Vianna, Andre C., 2016. "Are US-Dollar-Hedged-ETF investors aggressive on exchange rates? A panel VAR approach," Research in International Business and Finance, Elsevier, vol. 38(C), pages 430-438.
    3. Michael McAleer & Christian M. Hafner, 2014. "A One Line Derivation of EGARCH," Econometrics, MDPI, vol. 2(2), pages 1-6, June.
    4. Andrada-Félix, Julián & Fernandez-Perez, Adrian & Sosvilla-Rivero, Simón, 2020. "Distant or close cousins: Connectedness between cryptocurrencies and traditional currencies volatilities," Journal of International Financial Markets, Institutions and Money, Elsevier, vol. 67(C).
    5. Ekpeno L. Effiong, 2014. "Exchange Rate Dynamics and Monetary Fundamentals: A Cointegrated SVAR Approach for Nigeria," Global Business Review, International Management Institute, vol. 15(2), pages 205-221, June.
    6. Burchan Sakarya & Aykut Ekinci, 2020. "Exchange-traded funds and FX volatility: Evidence from Turkey," Central Bank Review, Research and Monetary Policy Department, Central Bank of the Republic of Turkey, vol. 20(4), pages 205-211.
    7. Calvo, Guillermo & Vegh, Carlos, 1992. "Currency Substitution in Developing Countries: An Introduction," MPRA Paper 20338, University Library of Munich, Germany.
    8. Michael McAleer, 2014. "Asymmetry and Leverage in Conditional Volatility Models," Econometrics, MDPI, vol. 2(3), pages 1-6, September.
    9. Girton, Lance & Roper, Don E, 1981. "Theory and Implications of Currency Substitution," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 13(1), pages 12-30, February.
    10. Miguel Lebre De Freitas & Francisco José Veiga, 2006. "Currency substitution, portfolio diversification, and money demand," Canadian Journal of Economics/Revue canadienne d'économique, John Wiley & Sons, vol. 39(3), pages 719-743, August.
    11. Nelson, Daniel B, 1991. "Conditional Heteroskedasticity in Asset Returns: A New Approach," Econometrica, Econometric Society, vol. 59(2), pages 347-370, March.
    12. Özbilgin, Murat H., 2012. "Currency substitution, inflation, and welfare," Journal of Development Economics, Elsevier, vol. 99(2), pages 358-369.
    13. R. Scott Hacker & Abdulnasser Hatemi-J, 2005. "A test for multivariate ARCH effects," Applied Economics Letters, Taylor & Francis Journals, vol. 12(7), pages 411-417.
    14. Thomas, Lee R, 1985. "Portfolio Theory and Currency Substitution," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 17(3), pages 347-357, August.
    15. Fischer, Stanley, 1982. "Seigniorage and the Case for a National Money," Journal of Political Economy, University of Chicago Press, vol. 90(2), pages 295-313, April.
    16. Bollerslev, Tim, 1986. "Generalized autoregressive conditional heteroskedasticity," Journal of Econometrics, Elsevier, vol. 31(3), pages 307-327, April.
    17. Mcgibany, James M. & Nourzad, Farrokh, 1995. "Exchange rate volatility and the demand for money in the U.S," International Review of Economics & Finance, Elsevier, vol. 4(4), pages 411-425.
    18. Benigno, Pierpaolo & Schilling, Linda M. & Uhlig, Harald, 2022. "Cryptocurrencies, currency competition, and the impossible trinity," Journal of International Economics, Elsevier, vol. 136(C).
    19. Keshtgar, Nafiseh & Pahlavani, Mosayeb & Mirjalili, Seyed Hossein, 2020. "The Impact of Exchange Rate volatility on Banking Performance (case of Iran)," EconStor Open Access Articles and Book Chapters, ZBW - Leibniz Information Centre for Economics, vol. 12(1), pages 39-56.
    20. Ms. Marwa Alnasaa & Nikolay Gueorguiev & Mr. Jiro Honda & Eslem Imamoglu & Mr. Paolo Mauro & Keyra Primus & Mr. Dmitriy L Rozhkov, 2022. "Crypto, Corruption, and Capital Controls: Cross-Country Correlations," IMF Working Papers 2022/060, International Monetary Fund.
    21. Ferrari Minesso, Massimo, 2019. "Emerging market economy currencies: the role of global risk, the US dollar and domestic forces," Economic Bulletin Boxes, European Central Bank, vol. 3.
    22. R. Scott Hacker & Hyunjoo Kim Karlsson & Kristofer Månsson, 2012. "The Relationship between Exchange Rates and Interest Rate Differentials: A Wavelet Approach," The World Economy, Wiley Blackwell, vol. 35(9), pages 1162-1185, September.
    23. Akcay, O. Cevdet & Alper, C. Emre & Karasulu, Meral, 1997. "Currency substitution and exchange rate instability: The Turkish case," European Economic Review, Elsevier, vol. 41(3-5), pages 827-835, April.
    24. Alnasaa, Marwa & Gueorguiev, Nikolay & Honda, Jiro & Imamoglu, Eslem & Mauro, Paolo & Primus, Keyra & Rozhkov, Dmitriy, 2022. "Crypto-assets, corruption, and capital controls: Cross-country correlations," Economics Letters, Elsevier, vol. 215(C).
    25. R. F. Engle & A. J. Patton, 2001. "What good is a volatility model?," Quantitative Finance, Taylor & Francis Journals, vol. 1(2), pages 237-245.
    26. Ize, Alain & Yeyati, Eduardo Levy, 2003. "Financial dollarization," Journal of International Economics, Elsevier, vol. 59(2), pages 323-347, March.
    27. Di Casola, Paola & Habib, Maurizio Michael & Tercero-Lucas, David, 2023. "Global and local drivers of Bitcoin trading vis-à-vis fiat currencies," Working Paper Series 2868, European Central Bank.
    28. Musa, Nuhu, 2021. "Impact of Exchange Rate Volatility on Inflation in Nigeria," Journal of Contemporary Research in Business, Economics and Finance, Learning Gate, vol. 3(1), pages 26-38.
    29. Engle, Robert F, 1982. "Autoregressive Conditional Heteroscedasticity with Estimates of the Variance of United Kingdom Inflation," Econometrica, Econometric Society, vol. 50(4), pages 987-1007, July.
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    More about this item

    JEL classification:

    • C58 - Mathematical and Quantitative Methods - - Econometric Modeling - - - Financial Econometrics
    • E44 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Financial Markets and the Macroeconomy
    • G32 - Financial Economics - - Corporate Finance and Governance - - - Financing Policy; Financial Risk and Risk Management; Capital and Ownership Structure; Value of Firms; Goodwill
    • G01 - Financial Economics - - General - - - Financial Crises

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