Volatility of Technology and Healthcare Sectors Before and During Covid-19 Pandemic

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  • Norlida Mahussin Universiti Sains Islam Malaysia
  • Asmah Mohd Jaapar Universiti Sains Islam Malaysia
  • Luqman Anwar Mustafa




Covid-19, volatility, Technology sector, Healthcare sSector, GARCH model


The study investigates the effect of the Covid-19 on the volatility of the technology and healthcare sector stock index in Malaysia. The two sectors pose considerable attention during the pandemic due to the increase in demand for healthcare products and digital services. The volatilities are estimated using the GARCH model for the period before and after the implementation of the nationwide movement order control using daily data from September 2019 to September 2020. The finding shows that the Covid-19 pandemic caused a volatility jump for the technology sector index in March 2020 but subsided afterward with estimated conditional volatility revert to normal in the middle of April 2020. However, during the high uncertainty period, the healthcare sector shows a steady increase in volatility beginning in March 2020 till the end of September 2020. The study confirms that there is a significant difference in the volatility of healthcare and technology sectors before and during the Covid-19 outbreak. The outbreak has a significant impact on increasing the volatilities for both sectors but is impacted in different magnitude.


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D. Altig, S. Baker, J.M. Barrero, N. Bloom, P. Bunn, S. Chen, ... and G. Thwaites, “Economic uncertainty before and during the COVID-19 pandemic”. Journal of Public Economics, vol. 191, 104274, 2020.

World Bank Group. Global Economic Prospect, January 2021. World Bank. https://www.worldbank.org/en/publication/global-economic-prospects, 2021.

D. Zhang, M. Hu, and Q. Ji, “Financial markets under the global pandemic of COVID-19. Finance Research Letters” vol.36, issue. March, 101528, 2020.

S.R. Baker, N. Bloom, S.J. Davis, and S.J. Terry, “Covid-induced economic uncertainty” (No. w26983). National Bureau of Economic Research, 2020.

S. Nippani, S. and K.M. Washer, “SARS: A non-event for affected countries’ stock markets?” Applied Financial Economics, vol.14(15), pp.1105-1110, 2004.

M.H. Chen, S.S. Jang, and W.G. Kim, The impact of the SARS outbreak on Taiwanese hotel stock performance: an event-study approach. International Journal of Hospitality Management, vol.26(1), pp. 200-212, 2007.

Y.H. Wang, F.J. Yang, and L.J. Chen, “An investor's perspective on infectious diseases and their influence on market behavior”, Journal of Business Economics and Management, vol.14(sup1), pp. 112-127, 2013.

A. M Al-Awadhi, K. Alsaifi, A. Al-Awadhi, and S. Alhammadi, “Death and contagious infectious diseases: Impact of the COVID-19 virus on stock market returns,” Journal of Behavioral and Experimental Finance, vol. 27, 100326, 2020.

B.N. Ashraf, “ Stock markets’ reaction to COVID-19: Cases or fatalities?” Research in International Business and Finance, vol.54, 101249, 2020

K. Y. M. Lee, M. Jais, and C.W. Chan, “Impact of COVID-19: Evidence from Malaysian stock market” International Journal of Business and Society, vol.21(2), pp. 607-628, 2020.

D. L. T. Anh, and C. Gan, “The impact of the COVID-19 lockdown on stock market performance: evidence from Vietnam”, Journal of Economic Studies. 2020.

A.A. Salisu, and L.O. Akanni, “Constructing a global fear index for the COVID-19 pandemic”, Emerging Markets Finance and Trade, vol. 56(10), pp. 2310-2331, 2020.

M. A. Harjoto, F. Rossi, and J.K. Paglia, “COVID-19: stock market reactions to the shock and the stimulus. Applied Economics Letters, 00(00), pp. 1–7. https://doi.org/10.1080/13504851.2020.1781767, 2020.

H. Liu, A. Manzoor, C. Wang, L. Zhang, and Z. Manzoor, “The COVID-19 outbreak and affected countries stock markets response,” International Journal of Environmental Research and Public Health, vol.17(8), pp. 2800, 2020.

S. R Baker, N. Bloom, S.J. Davis, K. Kost, M. Sammon, and T. Viratyosin, “The unprecedented stock market reaction to COVID-19,” The Review of Asset Pricing Studies, vol. 10, no. 4, pp. 742-758, 2020

A. Zaremba, R. Kizys, D.Y. Aharon, and E. Demir, “Infected markets: Novel coronavirus, government interventions, and stock return volatility around the globe” Finance Research Letters, vol.35, 101597, 2020.

O. Haroon, and S.A.R. Rizvi, “COVID-19: Media coverage and financial markets behavior—A sectoral inquiry”, Journal of Behavioral and Experimental Finance, vol.27, 100343, 2020.

M. Mazur, M. Dang, and M.Vega, “COVID-19 and the march 2020 stock market crash: Evidence from S&P500,” Finance Research Letters, vol. 38, 101690, 2021.

S.Baek, S.K.Mohanty, and M. Glambosky, “COVID-19 and stock market volatility: An industry level analysis”, Finance Research Letters, vol.37, 101748, 2020.

L.W. Khuen, (2021, January, 5), “Surviving the impact of Covid-19: Healthcare the sector with most deals”, The Edge, https://www.theedgemarkets.com/article/surviving-impact-covid19-healthcare-sector-most-deals

C. Poo and L.W. Khuen (2020, December 28), “Tech and healthcare stocks to lead equities in 2021 recovery, says Principle Asset, The Edge, https://www.theedgemarkets.com/article/tech-and-healthcare-stocks-lead-equities-2021-recovery-says-principal-asset.

F. Adilla (2020, April 14), “Top Glove, Hartalega surge as global demand soars”, The New Strait Times, https://www.nst.com.my/business/2020/04/584169/top-glove-hartalega-surge-global-demand-soars.

M.A. Hamdan (2020, June, 26), “Suspension of short selling on Bursa Malaysia extended until year-end”, The Edge, https://www.theedgemarkets.com/article/suspension-short-selling-bursa-malaysia-extended-until-yearend.

R.C.J. Chia, V.K.S. Liew, and R.Rowland, “Daily new Covid-19 cases, the Movement Control Order, and Malaysian stock market returns”, International Journal of Business and Society, 21(2), pp. 553-568, 2020

R. F. Engle, "Autoregressive Conditional Heteroskedasticity with Estimates of the Variance of United Kingdom Inflation". Econometrica, vol. 50 (4), pp. 987-1007, 1982.

T. Bollerslev, "Generalized Autoregressive Conditional Heteroskedasticity". Journal of Econometrics, vol.31, pp. 307-327, 1986.

O. Ozkan, “Volatility Jump: The Effect of Covid-19 on Turkey Stock Market”. Journal of Social Sciences, Special Issue, pp. 386-397, 2020.


DOI: 10.33102/mjosht.v7i2.166
Published: 2021-10-01

How to Cite

Mahussin, N., Mohd Jaapar, A. ., & Mustafa, L. A. (2021). Volatility of Technology and Healthcare Sectors Before and During Covid-19 Pandemic . Malaysian Journal of Science Health & Technology, 7(2), 39–47. https://doi.org/10.33102/mjosht.v7i2.166



Actuarial Science