Volatility In Capital Markets: A Comparison Between Brics and G7 Countries In The Context Of The Covid-19 Pandemic

Authors

DOI:

https://doi.org/10.5380/rcc.18.101963

Keywords:

Uncertainty, Volatility, covid-19

Abstract

This article compares the impacts of uncertainty caused by the covid-19 pandemic on the volatility of financial markets in two groups of countries: emerging markets (BRICS) and developed markets (G7). An uncertainty index associated with infectious diseases (EMVID) was used to explain variations in volatility. The results indicate a statistically significant association between increases in market risk and pandemic-related uncertainty. BRICS countries showed, on average, higher levels of volatility, although the differences were not statistically significant. There is heterogeneity among BRICS countries, particularly China, which exhibited the lowest levels of volatility. The results suggest that country-level analyses are more informative than analyses aggregated at the block level. The main contributions of the study are: (i) theoretical, by demonstrating how global health crises affect financial market volatility; (ii) empirical, by showing that average volatility between the G7 and BRICS does not differ statistically in the model, reinforcing the need for individual analyses; and (iii) methodological, by applying the EMVID index as a proxy for uncertainty associated with infectious diseases.

Author Biographies

Gabriel de Almeida Aguiar, Universidade de São Paulo

Doutorando em Administração na FEA-RP/USP

Tabajara Pimenta Júnior, Universidade de São Paulo

Professor da FEA-RP/USP

Luiz Eduardo Gaio, UNICAMP

Professor da FCA/UNICAMP

Fabiano Guasti Lima, Universidade de São Paulo

Professor da FEA-RP/USP

References

Ahmed, R. R., Vveinhardt, J., Štreimikienė, D., Ghauri, S. P., & Ashraf, M. (2018). Stock returns, volatility and mean reversion in emerging and developed financial markets. Technological and Economic Development of Economy, 24(3), 1149-1177. https://doi.org/10.3846/20294913.2017.1323317

Baker, S. R., Bloom, N., Davis, S. J., Kost, K., Sammon, M., & Viratyosin, T. (2020). The unprecedented stock market impact of COVID-19 (NBER Working Paper No. 26945). National Bureau of Economic Research. https://ssrn.com/abstract=3569410

Baker, S. R., Bloom, N., Davis, S. J., & Terry, S. J. (2020). COVID-induced economic uncertainty (NBER Working Paper No. 26983). National Bureau of Economic Research. https://doi.org/10.3386/w26983

Barro, R. J., & Ursúa, J. F. (2012). Rare macroeconomic disasters. Annual Review of Economics, 4(1), 83–109. https://doi.org/10.1146/annurev-economics-080511-110932

Benachenhou, A. Países emergentes. Brasília: Fundação Alexandre de Gusmão (FUNAG), 2013.

Bouri, E., Demirer, R., Gupta, R., & Nel, J. (2021). COVID-19 Pandemic and Investor Herding in International Stock Markets. Risks, 9(9), 168. https://doi.org/10.3390/risks9090168

Bouri, E., Demirer, R., Gupta, R., & Pierdzioch, C. (2020). Infectious Diseases, Market Uncertainty and Oil Market Volatility. Energies, 13(16), 4090. https://doi.org/10.3390/en13164090

Engelhardt, N., Krause, M., Neukirchen, D., & Posch, P. N. (2021). Trust and stock market volatility during the COVID-19 crisis. Finance research letters, 38, 101873. https://doi.org/10.1016/j.frl.2020.101873

Erdem O. (2020). Freedom and stock market performance during Covid-19 outbreak. Finance research letters, 36, 101671. https://doi.org/10.1016/j.frl.2020.101671

Furtado, F. L., Flach, L., & Sallaberry, J. (2019). Capital markets in crisis scenarios in emerging markets. Journal of Globalization, Competitiveness, and Governability, 13(3), 83–96.

Jin, X., & An, X. (2016). Global financial crisis and emerging stock market contagion: A volatility impulse response function approach. Research in International Business and Finance, 36, 179–195.

Johns Hopkins University. (2025). COVID-19 dashboard by the Center for Systems Science and Engineering (CSSE). https://coronavirus.jhu.edu/

Karolyi, G.A., 2001. Why Stock Return Volatility Really Matters. Institutional Investor Journals Series, (614), pp.1-16.

Laborda, R., & Olmo, J. (2021). Volatility spillover between economic sectors in financial crisis prediction: Evidence spanning the Great Financial Crisis and COVID-19 pandemic. Research in International Business and Finance, 57, Art. 101402.

Mirza, N., Rahat, B., Naqvi, B., & Rizvi, S. K. A. (2023). Impact of Covid-19 on corporate solvency and possible policy responses in the EU. The Quarterly review of economics and finance: journal of the Midwest Economics Association, 87, 181–190. https://doi.org/10.1016/j.qref.2020.09.002

Muguto, L., & Muzindutsi, P.-F. (2022). A Comparative Analysis of the Nature of Stock Return Volatility in BRICS and G7 Markets. Journal of Risk and Financial Management, 15(2), 85. https://doi.org/10.3390/jrfm15020085

Pimenta Júnior, T., Lima, F. G., & Gaio, L. E. (2014). Volatility behaviour of BRIC capital markets in the 2008 international financial crisis. African Journal of Business Management, 8(11), 373-381.

PolicyUncertainty.com. Equity market volatility (EMV) tracker: Infectious disease EMV index. https://www.policyuncertainty.com/infectious_EMV.html

Singhania, M., & Anchalia, J. (2013). Volatility in Asian stock markets and global financial crisis. Journal of Advances in Management Research, 10(3), 333–351. https://doi.org/10.1108/JAMR-01-2013-0011

Published

2026-05-29

How to Cite

de Almeida Aguiar, G., Pimenta Júnior, T., Gaio, L. E., & Guasti Lima, F. (2026). Volatility In Capital Markets: A Comparison Between Brics and G7 Countries In The Context Of The Covid-19 Pandemic. Revista Contabilidade E Controladoria - RC&C, 18. https://doi.org/10.5380/rcc.18.101963

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Articles