This paper investigates the impact of the Covid-19 pandemic in predicting the profitability of the stock market of the ten most hit countries at the beginning of the pandemic. The study employed the Artificial Neural Network models for the analysis. Specifically, the Backward Propagation (BP) and Feed-Forward (FF) Neural Network models are used to predict the profitability of the stock market on a daily time frame. Taking Covid-19 into account, the estimation result shows that the Neural Network built is resilient in its ability to forecast the profitability of the stock market in Brazil and China. However, in the case of Germany, Russia, Turkey, and the United States, the Neural Network is partly resilient in its forecasting ability; predicted profitability deviated from the actual profitability in some of the periods. For the remaining countries in the sample, the Artificial Neural Network is found to have a weak prediction power.
Baker, S. R., Bloom, N., Davis, J., Kost, K., Sammon, M., & Viratyosin, T. (2020). The unprecedented stock market reaction to Covid-19. Pandemics: Long-Run Effects, 1(DP 14543), 33–42.
Chatterjee, A., Ayadi, O. F., & Boone, B. E. (2000). Artificial neural network and the financial markets: A survey. Managerial Finance, 26(12), 32–45. https://doi.org/10.1108/03074350010767034
Corbet, S., Larkin, C. J., & Lucey, B. M. (2020). The Contagion Effects of the COVID-19 Pandemic: Evidence from Gold and Cryptocurrencies. SSRN Electronic Journal, 101554. https://doi.org/10.2139/ssrn.3564443
Ding, W., Levine, R. E., Lin, C., & Xie, W. (2020). Corporate Immunity to the COVID-19 Pandemic. SSRN Electronic Journal. https://doi.org/10.2139/ssrn.3578585
Feng, S., Li, L., Cen, L., & Huang, J. (2003). Using MLP networks to design a production scheduling system. Computers and Operations Research, 30(6), 821–832. https://doi.org/10.1016/S0305-0548(02)00044-8
Goodell, J. W. (2020). COVID-19 and finance: Agendas for future research. Finance Research Letters, 101512. https://doi.org/10.1016/j.frl.2020.101512
H.M.NishanthiHerath, P., Perera, A. A. I., & Wijekoon, H. P. (2014). Prediction of Dengue Outbreaks in Sri Lanka using Artificial Neural Networks. International Journal of Computer Applications, 101(15), 1–5. https://doi.org/10.5120/17760-8862
Laureano-Rosario, A., Duncan, A., Mendez-Lazaro, P., Garcia-Rejon, J., Gomez-Carro, S., Farfan-Ale, J., … Muller-Karger, F. (2018). Application of Artificial Neural Networks for Dengue Fever Outbreak Predictions in the Northwest Coast of Yucatan, Mexico and San Juan, Puerto Rico. Tropical Medicine and Infectious Disease, 3(1), 5. https://doi.org/10.3390/tropicalmed3010005
Lim, K., & Liew, K. (2003). Testing for Non-Linearity in ASEAN Financial Markets. Finance. Retrieved from http://econwpa.wustl.edu/eps/fin/papers/0308/0308002.pdf%5Cnpapers2://publication/uuid/114CB99E-FB4E-4F25-A57E-E762A63D2B33
Lopez, D., Manogaran, G., & Jagan Mohan, J. (2017). Modelling the H1N1 influenza using mathematical and neural network approaches. Biomedical Research (India), 28(8), 3711–3715.
Marius-Constantin, P., Balas, V. E., Perescu-Popescu, L., & Mastorakis, N. (2009). Multilayer perceptron and neural networks. WSEAS Transactions on Circuits and Systems, 8(7), 579–588.
Moghaddam, A. H., Moghaddam, M. H., & Esfandyari, M. (2016). Predicción del índice del mercado bursátil utilizando una red neuronal artificial. Journal of Economics, Finance and Administrative Science, 21(41), 89–93. https://doi.org/10.1016/j.jefas.2016.07.002
Ramelli, S., & Wagner, A. F. (2020). Feverish Stock Price Reactions to COVID-19. Swiss Finance Institute Research Paper Series, 20(12).
Sharif, A., Aloui, C., & Yarovaya, L. (2020). COVID-19 Pandemic, Oil Prices, Stock Market and Policy Uncertainty Nexus in the US Economy: Fresh Evidence from the Wavelet-Based Approach. SSRN Electronic Journal. https://doi.org/10.2139/ssrn.3574699
Svozil, D., Kvasnicka, V., & Pospichal, J. (1997). Introduction to multi-layer feed-forward neural networks. Chemometrics and Intelligent Laboratory Systems, 39, 43–62.
Yu, Z., Qin, L., Chen, Y., & Parmar, M. D. (2020). Stock price forecasting based on LLE-BP neural network model. Physica A: Statistical Mechanics and Its Applications, 124197. https://doi.org/10.1016/j.physa.2020.124197
Zhang, D., Hu, M., & Ji, Q. (2020). Financial markets under the global pandemic of COVID-19. Finance Research Letters, (March), 101528. https://doi.org/10.1016/j.frl.2020.101528
Bu makale, pandeminin başlangıcında en çok etkilenen on ülkenin borsalarının karlılığını tahmin etmede Covid-19 pandemisinin etkisini araştırmaktadır. Çalışma, analiz için Yapay Sinir Ağı modellerini kullandı. Spesifik olarak, Geriye Yayılım (BP) ve İleri Beslemeli (FF) Sinir Ağı modelleri, borsanın günlük bir zaman diliminde karlılığını tahmin etmek için kullanılır. Covid-19 dikkate alındığında, tahmin sonucu, oluşturulan Sinir Ağının Brezilya ve Çin'deki borsanın karlılığını tahmin etme yeteneğinde esnek olduğunu gösteriyor. Ancak Almanya, Rusya, Türkiye ve Amerika Birleşik Devletleri örneğinde, Sinir Ağı tahmin yeteneğinde kısmen esnektir; Bazı dönemlerde tahmin edilen kârlılık fiili kârlılıktan sapmıştır. Örneklemde kalan ülkeler için Yapay Sinir Ağının zayıf bir tahmin gücüne sahip olduğu bulunmuştur.
Baker, S. R., Bloom, N., Davis, J., Kost, K., Sammon, M., & Viratyosin, T. (2020). The unprecedented stock market reaction to Covid-19. Pandemics: Long-Run Effects, 1(DP 14543), 33–42.
Chatterjee, A., Ayadi, O. F., & Boone, B. E. (2000). Artificial neural network and the financial markets: A survey. Managerial Finance, 26(12), 32–45. https://doi.org/10.1108/03074350010767034
Corbet, S., Larkin, C. J., & Lucey, B. M. (2020). The Contagion Effects of the COVID-19 Pandemic: Evidence from Gold and Cryptocurrencies. SSRN Electronic Journal, 101554. https://doi.org/10.2139/ssrn.3564443
Ding, W., Levine, R. E., Lin, C., & Xie, W. (2020). Corporate Immunity to the COVID-19 Pandemic. SSRN Electronic Journal. https://doi.org/10.2139/ssrn.3578585
Feng, S., Li, L., Cen, L., & Huang, J. (2003). Using MLP networks to design a production scheduling system. Computers and Operations Research, 30(6), 821–832. https://doi.org/10.1016/S0305-0548(02)00044-8
Goodell, J. W. (2020). COVID-19 and finance: Agendas for future research. Finance Research Letters, 101512. https://doi.org/10.1016/j.frl.2020.101512
H.M.NishanthiHerath, P., Perera, A. A. I., & Wijekoon, H. P. (2014). Prediction of Dengue Outbreaks in Sri Lanka using Artificial Neural Networks. International Journal of Computer Applications, 101(15), 1–5. https://doi.org/10.5120/17760-8862
Laureano-Rosario, A., Duncan, A., Mendez-Lazaro, P., Garcia-Rejon, J., Gomez-Carro, S., Farfan-Ale, J., … Muller-Karger, F. (2018). Application of Artificial Neural Networks for Dengue Fever Outbreak Predictions in the Northwest Coast of Yucatan, Mexico and San Juan, Puerto Rico. Tropical Medicine and Infectious Disease, 3(1), 5. https://doi.org/10.3390/tropicalmed3010005
Lim, K., & Liew, K. (2003). Testing for Non-Linearity in ASEAN Financial Markets. Finance. Retrieved from http://econwpa.wustl.edu/eps/fin/papers/0308/0308002.pdf%5Cnpapers2://publication/uuid/114CB99E-FB4E-4F25-A57E-E762A63D2B33
Lopez, D., Manogaran, G., & Jagan Mohan, J. (2017). Modelling the H1N1 influenza using mathematical and neural network approaches. Biomedical Research (India), 28(8), 3711–3715.
Marius-Constantin, P., Balas, V. E., Perescu-Popescu, L., & Mastorakis, N. (2009). Multilayer perceptron and neural networks. WSEAS Transactions on Circuits and Systems, 8(7), 579–588.
Moghaddam, A. H., Moghaddam, M. H., & Esfandyari, M. (2016). Predicción del índice del mercado bursátil utilizando una red neuronal artificial. Journal of Economics, Finance and Administrative Science, 21(41), 89–93. https://doi.org/10.1016/j.jefas.2016.07.002
Ramelli, S., & Wagner, A. F. (2020). Feverish Stock Price Reactions to COVID-19. Swiss Finance Institute Research Paper Series, 20(12).
Sharif, A., Aloui, C., & Yarovaya, L. (2020). COVID-19 Pandemic, Oil Prices, Stock Market and Policy Uncertainty Nexus in the US Economy: Fresh Evidence from the Wavelet-Based Approach. SSRN Electronic Journal. https://doi.org/10.2139/ssrn.3574699
Svozil, D., Kvasnicka, V., & Pospichal, J. (1997). Introduction to multi-layer feed-forward neural networks. Chemometrics and Intelligent Laboratory Systems, 39, 43–62.
Yu, Z., Qin, L., Chen, Y., & Parmar, M. D. (2020). Stock price forecasting based on LLE-BP neural network model. Physica A: Statistical Mechanics and Its Applications, 124197. https://doi.org/10.1016/j.physa.2020.124197
Zhang, D., Hu, M., & Ji, Q. (2020). Financial markets under the global pandemic of COVID-19. Finance Research Letters, (March), 101528. https://doi.org/10.1016/j.frl.2020.101528
Babangida, J. S., Abubakar, A., Mamman, S., Ben Brahim, F. (2022). Predicting the Profitability of the Stock Market during a Pandemic. Aksaray Üniversitesi İktisadi Ve İdari Bilimler Fakültesi Dergisi, 14(2), 183-190. https://doi.org/10.52791/aksarayiibd.908268