STOCK MARKET REACTION TO THE COVID-19: EVENT STUDY METHODOLOGY OF PUBLICLY TRADED HEALTHCARE COMPANIES IN INDONESIA

Authors

Levina Ameline Moelyono Universitas Pelita Harapan

DOI:

https://doi.org/10.31539/costing.v8i3.15242

Keywords:

Cummulative Average Abnormal Returns, Event Study Methodology, Firm Size, Healthcare Providers, Stock Market Reaction.

Abstract

The COVID-19 pandemic caused a stir in the stock market worldwide. Although the healthcare industry was regarded as the better-performing sector during the Pandemic, understanding market behaviour surrounding significant events related to COVID-19 and analysing possible confounding factors to this behaviour will help investors determine stances in future similar circumstances. This study employs event study methodology to find the correlation between variables. Events chosen are the announcement of the first COVID-19 case in Indonesia on March 2^nd 2020, the announcement of large-scale distancing measures in the Greater Jakarta area on April 7^th 2020, the announcement of health protocol easing on May 17^th 2022 and the end of the emergency phase for COVID-19 announcement by WHO, on May 5^th 2023 This study aims to picture the 16 healthcare stock market reactions to these events. This study shows that the healthcare stock is not affected by the first, second, third, and fourth event except for MERK on first, second, and third event, and PRIM on first and second event. Older listings age, bigger firm sizes, and pharmaceuticals subindustry showed more resilience during the event study, however no significance obtained.

References

Ali, M., Alam, N., & Rizvi, S. A. R. (2020). Coronavirus (COVID-19) — An epidemic or pandemic for financial markets. Journal of Behavioral and Experimental Finance, 27, 100341. https://doi.org/10.1016/j.jbef.2020.100341

Anur, V. F., Mufid, J. E., & Wulandari, D. S. (2022). Stock Price Analysis Before and During The Covid-19 Pandemic (Case Study on Pharmaceutical Sub-Sector Listed on the Indonesia Stock Exchange). Indikator: Jurnal Ilmiah Manajemen Dan Bisnis, 6(2), 81. https://doi.org/10.22441/indikator.v6i2.14180

Baek, S., Mohanty, S. K., & Glambosky, M. (2020). COVID-19 and stock market volatility: An industry level analysis. Finance Research Letters, 37, 101748. https://doi.org/10.1016/j.frl.2020.101748

Bai, L., Wei, Y., Wei, G., Li, X., & Zhang, S. (2021). Infectious disease pandemic and permanent volatility of international stock markets: A long-term perspective. Finance Research Letters, 40, 101709. https://doi.org/10.1016/j.frl.2020.101709

Baker, S. R., Bloom, N., Davis, S. J., Kost, K., Sammon, M., & Viratyosin, T. (2020). The Unprecedented Stock Market Reaction to COVID-19. The Review of Asset Pricing Studies, 10(4), 742–758. https://doi.org/10.1093/rapstu/raaa008

Bašta, M., & Molnár, P. (2018). Oil market volatility and stock market volatility. Finance Research Letters, 26, 204–214. https://doi.org/10.1016/j.frl.2018.02.001

Cabinet Secretariat of the Republic of Indonesia. (2022). Gov’t Relaxes Policy on Mask-Wearing. Cabinet Secretariat of the Republic of Indonesia. https://setkab.go.id/en/govt-relaxes-policy-on-mask-wearing/

Campbell, S., Greenwood, M., Prior, S., Shearer, T., Walkem, K., Young, S., Bywaters, D., & Walker, K. (2020). Purposive sampling: complex or simple? Research case examples. Journal of Research in Nursing, 25(8), 652–661. https://doi.org/10.1177/1744987120927206

Carvalho, T., Krammer, F., & Iwasaki, A. (2021). The first 12 months of COVID-19: a timeline of immunological insights. Nature Reviews Immunology, 21(4), 245–256. https://doi.org/10.1038/s41577-021-00522-1

Choi, S.-Y. (2020). Industry volatility and economic uncertainty due to the COVID-19 pandemic: Evidence from wavelet coherence analysis. Finance Research Letters, 37, 101783. https://doi.org/10.1016/j.frl.2020.101783

Corrado, C. J. (2011). Event studies: A methodology review. Accounting & Finance, 51(1), 207–234. https://doi.org/10.1111/j.1467-629X.2010.00375.x

Cortés, L. M., Lozada, J. M., & Perote, J. (2021). Firm size and economic concentration: An analysis from a lognormal expansion. PLOS ONE, 16(7), e0254487. https://doi.org/10.1371/journal.pone.0254487

Djaafara, B. A., Whittaker, C., Watson, O. J., Verity, R., Brazeau, N. F., Widyastuti, Oktavia, D., Adrian, V., Salama, N., Bhatia, S., Nouvellet, P., Sherrard-Smith, E., Churcher, T. S., Surendra, H., Lina, R. N., Ekawati, L. L., Lestari, K. D., Andrianto, A., Thwaites, G., … Walker, P. G. T. (2021). Using syndromic measures of mortality to capture the dynamics of COVID-19 in Java, Indonesia, in the context of vaccination rollout. BMC Medicine, 19(1), 146. https://doi.org/10.1186/s12916-021-02016-2

Djalante, R., Lassa, J., Setiamarga, D., Sudjatma, A., Indrawan, M., Haryanto, B., Mahfud, C., Sinapoy, M. S., Djalante, S., Rafliana, I., Gunawan, L. A., Surtiari, G. A. K., & Warsilah, H. (2020). Review and analysis of current responses to COVID-19 in Indonesia: Period of January to March 2020. Progress in Disaster Science, 6, 100091. https://doi.org/10.1016/j.pdisas.2020.100091

Efrianti, D. (2018). Influence Firm Age and Firm Size With Intellectual Capital Performance:(Empiric Study in Banking Sector in Indonesia Stock Exchange for Period 2013-2015). International Conference On Accounting And Management Science 2018, 239.

Elshqirat, M. K. (2022). Can The Easing Of COVID-19 Restrictions Enhance the Performance of Sectors in The Stock Market? International Business Research, 15(4), 34. https://doi.org/10.5539/ibr.v15n4p34

Faidah, F., Karatri, R. H., & Alfarisi, S. (2022). The Impact of the Provision of the COVID-19 Vaccine on Healthcare Stocks in Indonesia. Shirkah: Journal of Economics and Business, 7(1), 49–69. https://doi.org/10.22515/shirkah.v7i1.433

Fama, E. F. (1991). Efficient Capital Markets: II. The Journal of Finance, 46(5), 1575–1617. https://doi.org/10.1111/j.1540-6261.1991.tb04636.x

Fama, E. F., & French, K. R. (2012). Size, Value, and Momentum in International Stock Returns. SSRN Electronic Journal. https://doi.org/10.2139/ssrn.1720139

Fan, J. (2021). Firm Fundamentals in the COVID-19 Stock Market. University of Michigan.

Garg, R. (2016). Methodology for research I. Indian Journal of Anaesthesia, 60(9), 640. https://doi.org/10.4103/0019-5049.190619

GoPublic BEI. (2023). IDX Industrial Classification of Listed Companies on Indonesia Stock Exchange. Bursa Efek Indonesia. https://gopublic.idx.co.id/media/1404/daftar-sektor_web-go-public_en.pdf

Hanggara, A. G. (2020). Jakarta Response to COVID-19 Outbreak: A Timeline. Jakarta Smart City. https://corona.jakarta.go.id/en/artikel/linimasa-kebijakan-penanganan-pandemi-covid-19-di-jakarta

Harjoto, M. A., Rossi, F., & Paglia, J. (2020). COVID-19: Stock Market Reactions to the Shock and the Stimulus. SSRN Electronic Journal. https://doi.org/10.2139/ssrn.3622899

Indonesia Country Commercial Guide. (2022). Healthcare (Medical Devices & Equipment). International Trade Administration. https://www.trade.gov/country-commercial-guides/indonesia-healthcare-medical-devices-equipment

Ji, X., Bu, N., Zheng, C., Xiao, H., Liu, C., Chen, X., & Wang, K. (2024). Stock market reaction to the COVID-19 pandemic: an event study. Portuguese Economic Journal, 23(1), 167–186. https://doi.org/10.1007/s10258-022-00227-w

Keim, D. B. (1983). Size-related anomalies and stock return seasonality. Journal of Financial Economics, 12(1), 13–32. https://doi.org/10.1016/0304-405X(83)90025-9

Lambey, R. (2021). The Effect of Profitability, Firm Size, Equity Ownership, and Firm Age on Firm Value (Leverage Basis): Evidence from the Indonesian Manufacturer Companies. Archives of Business Research, 9(1), 128–139. https://doi.org/10.14738/abr.91.9649

Lei, L., Shang, Y., Chen, Y., & Wei, Y. (2019). Does the financial crisis change the economic risk perception of crude oil traders? A MIDAS quantile regression approach. Finance Research Letters, 30, 341–351. https://doi.org/10.1016/j.frl.2018.10.016

Mazur, M., Dang, M., & Vega, M. (2021). COVID-19 and the march 2020 stock market crash. Evidence from S&P1500. Finance Research Letters, 38, 101690. https://doi.org/10.1016/j.frl.2020.101690

Medina, A. F. (2020). Indonesia’s Healthcare Industry: Growing Opportunities for Foreign Investors. ASEAN Briefing. https://www.aseanbriefing.com/news/indonesias-healthcare-industry-growing-opportunities-foreign-investors/

Mittnik, S., Robinzonov, N., & Spindler, M. (2015). Stock market volatility: Identifying major drivers and the nature of their impact. Journal of Banking & Finance, 58, 1–14. https://doi.org/10.1016/j.jbankfin.2015.04.003

Mugiarni, A., & Wulandari, P. (2021). The Effect of Covid-19 Pandemic on Stock Returns: An Evidence of Indonesia Stock Exchange. Journal of International Conference Proceedings, 4(1), 28–37. https://doi.org/10.32535/jicp.v4i1.1122

Nugraha, A. T., Hakimah, Y., & Fawzi, A. M. (2022). COVID-19 pandemic and performance of Indonesian stock market: An event study analysis. Jurnal Economia, 18(2), 204–220.

Nusadata. (2021). Timeline COVID-19. Nusadata.

Office of Assistant to Deputy Cabinet Secretary for State Documents & Translation. (2022). Statement of President of the Republic of Indonesia on the Public Activity Restrictions (PPKM) Revocation, at State Palace, Jakarta, December 30, 2022. Cabinet Secretariat of the Republic of Indonesia. https://setkab.go.id/en/statement-of-president-of-the-republic-of-indonesia-on-the-public-activity-restrictions-ppkm-revocation-at-state-palace-jakarta-december-30-2022/

Oncu, E. (2021). The Impact of COVID-19 on Health Sector Stock Returns. SSRN Electronic Journal. https://doi.org/10.2139/ssrn.3982420

Paldam, M. (2021). Methods Used in Economic Research: An Empirical Study of Trends and Levels. Economics, 15(1), 28–42. https://doi.org/10.1515/econ-2021-0003

Rahman, K., & Bahari, A. (2023). Corporate Governanc, Corporate Social Responsibility Dan Ketahanan Perusahaan Di Indonesia. CURRENT: Jurnal Kajian Akuntansi Dan Bisnis Terkini, 4(1), 165–178. https://doi.org/10.31258/current.4.1.165-178

Rahmayani, D., & Oktavilia, S. (2021). Does the Covid-19 Pandemic Affect the Stock Market in Indonesia? Jurnal Ilmu Sosial Dan Ilmu Politik, 24(1), 33. https://doi.org/10.22146/jsp.56432

Rokom. (2023). Indonesia Berbagi Strategi Menanggulangi Pandemi di Forum Internasional. Sehat Negeriku. https://sehatnegeriku.kemkes.go.id/baca/rilis-media/20230501/0442852/indonesia-berbagi-strategi-menanggulangi-pandemi-di-forum-internasional/

Sapkota, S. P. (2020). Impact of epidemic infectious disease and death on stock returns: Evidences from Asian stock markets with COVID-19. Contemporary Research: An Interdisciplinary Academic Journal, 4(1), 174–191. https://doi.org/10.3126/craiaj.v4i1.32759

Scherf, M., Matschke, X., & Rieger, M. O. (2022). Stock market reactions to COVID-19 lockdown: A global analysis. Finance Research Letters, 45, 102245. https://doi.org/10.1016/j.frl.2021.102245

Simplywall. (2023). Largest Indonesian (IDX) Healthcare Stocks by Market Cap. Simplywall. https://simplywall.st/stocks/id/healthcare/market-cap-large

Syed, S. A. S. (2022). Stock market in the age of COVID19: Mere acclimatization or Stockholm syndrome? The Journal of Economic Asymmetries, 25, e00245. https://doi.org/10.1016/j.jeca.2022.e00245

Taher, A. (2022). The journey of policies during the COVID-19 pandemic in Indonesia: a need of evidence-informed policy. Medical Journal of Indonesia, 31(1), 3–6. https://doi.org/10.13181/mji.com.226199

Trisnowati, Y., & Muditomo, A. (2021). COVID-19 and Stock Market Reaction in Indonesia. Journal of Accounting and Investment, 22(1), 23–36. https://doi.org/10.18196/jai.v22i1.8859

Utomo, C. D., & Hanggraeni, D. (2021). The Impact of COVID-19 Pandemic on Stock Market Performance in Indonesia. The Journal of Asian Finance, Economics and Business, 8(5), 777–784. https://doi.org/10.13106/JAFEB.2021.VOL8.NO5.0777

WHO. (2023). Statement on the fifteenth meeting of the IHR (2005) Emergency Committee on the COVID-19 pandemic. World Health Organization. https://www.who.int/news/item/05-05-2023-statement-on-the-fifteenth-meeting-of-the-international-health-regulations-(2005)-emergency-committee-regarding-the-coronavirus-disease-(covid-19)-pandemic

Widnyana, I. W., & Warmana, G. O. (2022). Indonesia Composite Index and Market Reaction in Indonesia Due to Covid-19 Pandemic. Asia Pacific Management and Business Application, 010(03), 413–424. https://doi.org/10.21776/ub.apmba.2022.010.03.12

World Bank. (2021). Indonesia’s Economy Grew in 2021 Despite COVID-19, Will Accelerate in 2022, World Bank Report Says. World Bank Group. https://www.worldbank.org/en/news/press-release/2021/12/16/indonesia-economy-grew-in-2021-despite-covid-19-will-accelerate-in-2022-world-bank-report-says

Xie, Y., & Zhou, L. (2022). Stock Market Reaction to the Announcement of the COVID‐19 Lockdown: Evidence from Healthcare Companies in Malaysia. Journal of Environmental and Public Health, 2022(1). https://doi.org/10.1155/2022/7279233

Zhang, R., Ji, H., Pang, Y., & Suo, L. (2022). The impact of COVID-19 on cultural industries: An empirical research based on stock market returns. Frontiers in Public Health, 10. https://doi.org/10.3389/fpubh.2022.806045