Yıl: 2022 Cilt: 0 Sayı: 35 Sayfa Aralığı: 47 - 60 Metin Dili: Türkçe DOI: 10.18092/ulikidince.939798 İndeks Tarihi: 29-07-2022

COVID-19 SALGINININ S&P 500 ENDEKSİ OYNAKLIĞI ÜZERİNDEKİ ETKİSİ

Öz:
Yeni tip bir koronavirüs hastalığı (COVID-19) yakın tarihte yalnızca benzeri görülmemiş bir sağlık krizi değil, aynı zamanda küresel ekonomiyi etkisi altına alan en maliyetli pandemilerden biri olması bekleniyor. Son yapılan çalışmalar, COVID-19 salgınının bulaşıcılık etkisi ile finansal piyasaların oynaklığını arttırdığını gösteriyor. Bu çalışma, COVID-19 salgınının S&P 500 endeksi hisse senedi getirilerinin oynaklığı üzerindeki etkisini incelemeyi amaçlamaktadır. Bu amaçla hisse senedi getirilerinin oynaklığı21 Ocak 2020 ile 09 Nisan 2021 dönemleri arası günlük veriler kullanılarak GARCH-X modeli ile analiz edilmiştir. GARCH-X modeli COVID-19 faktörünü koşullu ortalama ve varyans denklemlerine bir dışsal değişken olarak ilave edilmesine izin vermektedir. Bulgular, ABD’de günlük olarak bildirilen COVID-19 vakalarının kısa dönemde hisse senedi getirileri üzerinde istatistiksel olarak anlamlı bir etkiye sahip değildir. Ancak, sonuçlar COVID-19 salgınının hisse senedi getirilerinin oynaklığı üzerinde pozitif ve istatistiksel olarak anlamlı bir etkiye sahip olduğunu göstermektedir. Genel olarak, sonuçlar COVID-19 salgınının hisse senedi getirilerinin oynaklığı üzerinde ciddi bir etkisi olabileceğine işaret etmektedir.
Anahtar Kelime: COVID-19 Hisse Senedi Getirileri Oynaklık GARCH-X Model

THE IMPACT OF THE COVID-19 OUTBREAK ON THE VOLATILITY OF THE S&P 500 INDEX

Öz:
A new type of coronavirus disease (COVID-19), known as SARS-CoV-2 is not only an unprecedented health crisis but it is also expected to become one of the most costly pandemics affecting the global economy in recent history. Recent studies (Apergis and Apergis (2020), Baig vd. (2021), Rai ve Garg (2021), Mazur ve Vega (2021)) show that the contagious effect of the COVID-19 outbreak increases the volatility of financial markets. This paper aims to examine the impact of the COVID-19 outbreak on the volatility of S&P 500 stock market returns using daily data over the period from January 21, 2020 to April 09, 2021. To this end, the volatility of stock returns is analyzed by using a GARCH-X model. The GARCH-X model allows us to include COVID-19 factor as an exogenous variable in the mean and conditional variance equations. The findings indicate that daily reported COVID-19 cases in the USA have statistically insignificant effect on stock returns in short-term. However, as the results indicate, the COVID-19 outbreak has a positive and statistically significant impact on the volatility of these stock returns.
Anahtar Kelime:

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  • Akhtaruzzaman, M., Boubaker, S. ve Sensoy, A. (2021). Financial Contagion During COVID-19 Crisis. Finance Research Letters, 38, 1-20.
  • Al-Awadhi, A. M., Alsaifi, K., Al-Awadhi, A. ve Alhammadi, S. (2020). Death and Contagious Infectious Diseases: Impact of the COVID-19 Virus on Stock Market Returns. Journal of Behavioral and Experimental Finance, 27, 1-5.
  • Ali, M., Alam, N. ve Rizvi, S. A. R. (2020). Coronavirus (COVID-19) – An Epidemic or Pandemic for Financial Markets. Journal of Behavioral and Experimental Finance, 27, 1-6.
  • Apergis, N. (1998). Stock Market Volatility and Deviations from Macroeconomic Fundamentals: Evidence from GARCH and GARCH-X Models. Credit and Capital Markets, 3(3), 400-412.
  • Apergis, N. ve Apergis, E. (2020). The Role of Covid-19 for Chinese Stock Returns: Evidence from A GARCHX Model. Asia-Paific Journal of Accounting & Economics, 1-9.
  • Ashraf, B. N. (2020). Stock Markets’ Reaction to COVID-19: Case sor Fatalities?. Research in International Business and Finance, 54, 1-18.
  • Baek, S., Mohanty, S. K. ve Glambosky, M. (2020). COVID-19 and Stock Market Volatility: An Industry Level Analysis. Finance Research Letters, 37, 1-10.
  • Baig, A. S., Butt, H. A., Haroon, O. ve Rizvi, S. A. R. (2021). Deaths, Panic, Lockdowns and US Equity Markets: The Case of COVID-19 Pandemic. Finance Research Letters, 38, 1-9.
  • Bloomberg. (2020). Stocks Jump With Wall Street Seeing “Crazy Swings”:Markets Wrap. Erişim Adresi https://www.bloomberg.com/news/articles/2020-03-16/rout-to-extend-in-asia-after-u-s-stocks-drop-12-markets-wrap
  • Bollerslev, T. (1986). Generalized Autoregressive Conditional Heteroskedasticity. Journal of Econometrics, 31(3), 307-327.
  • Brooks, C. (2014). Introductory Econometrics for Finance (3. Baskı). New York: Cambridge University Press.
  • Dickey, D. A. ve Fuller, W. A. (1979). Distribution of the Estimators for Autoregressive Time Series with a Unit Root. Journal of the American Statistical Association, 74(366), 427-431.
  • Domenech, A. B., Montalvo, J. G., Nagel, R. ve Satorra, A. (2002). One, Two, (Three), Infinity,…:Newspaper and Lab Beauty-Contest Experiments. American Economic Review, 92(5), 1687-1701.
  • Duffy, J. ve Nagel, R. (1997). On the Robustness of Behaviour in Experimental Beauty Contest Games. The Economic Journal, 107, 1684-1700.
  • Engle, R. F. (1982). Autoregressive Conditional Heteroskedasticity with Estimates of the Variance of U.K. Inflation, Econometrica, 50, 987-1008.
  • Engle, R. F., Lilien, D. M. ve Robins, R. P. (1987). Estimating Time Varying Risk Premia in the Term Structure: The ARCH-M Model. Econometrica, 55 (2), 391-407.
  • Engle, R. F., Ng, V. K., ve Rothschild, M. (1990). Asset Pricing with a Factor-ARCH Covariance Structure: Empirical Estimates for Treasury Bills. Journal of Econometrics, 45 (2), 213-237.
  • Engelhardt, N., Krause, M., Neukirchen, D. ve Posch, P. N. (2021). Trust and Stock Market Volatility During the COVID-19 Crisis. Finance Research Letters, 38, 1-6.
  • Ftiti, Z., Ameur, H. B. ve Louhichi, W. (2021). Does Non-Fundamental News Related to COVID-19 Matter for Stock Returns? Evidence from Shanghai Stock Market. Economic Modelling, 99, 1-9.
  • Harjoto, M. A., Rossi, F., Lee, R. ve Sergi, B. S. (2020). How do Equity Markets React to COVID-19? Evidence from Emerging and Developed Countries. Journal of Economics and Business, 1-15.
  • Haroon, O. ve Rizvi, S. A. R. (2020). COVID-19: Media Coverage and Financial Markets Behavior – A Sectoral Inquiry. Journal of Behavioral and Experimental Finance, 27, 1-5.
  • Iyke, B. N. (2020). COVID-19: The Reaction of US Oil and Gas Producers to the Pandemic. Energy Research Letters, 1(2), 1-7.
  • Mazur, M., Dang, M. ve Vega, M. (2021). COVID-19 and the March 2020 Stock Market Crash. Evidence from S&P 1500. Finance Research Letters, 38, 1-20.
  • Narayan, P. K., Phan, D. H. B. ve Liu, G. (2021). COVID-19 Lockdowns, Stimulus Packages, Travel Bans, and Stock Returns. Finance Research Letters, 38, 1-7.
  • Nelson, D. B. (1991). Conditional Heteroskedasticity in Asset Returns: A New Approach. Econometrica, 59(2), 347-370.
  • OECD. (2020). Tourism Policy Responses to the coronavirus (COVID-19). Erişim Adresi https://www.oecd.org/coronavirus/policy-responses/tourism-policy-responses-to-the-coronavirus-covid-19-6466aa20/
  • Rai, K. ve Garg, B. (2021). Dynamic Correlations and Volatility Spillovers Between Stock Price and Exchange Rate in BRIICS Economies: Evidence from the COVID-19 Outbreak Period. Applied Economics Letters, 1-7.
  • Salisu, A. A., Ebuh, G. U. ve Usman, N. (2020). Revisiting Oil-Stock Nexus During COVID-19 Pandemic: Some Preliminary Results. International Review of Economics & Finance, 69, 280-294.
  • Sharma, S. S. (2020). A Note on the Asian Market Volatility During the COVID-19 Pandemic. Asian Economics Letters, 1(2), 1-6.
  • WHO. (2020a). Pneumonia of Unknown Cause – China. Erişim Adresi https://www.who.int/csr/don/05-january-2020-pneumonia-of-unkown-cause-china/en/
  • WHO. (2020b). Novel Coronavirus - China Erişim Adresi https://www.who.int/csr/don/12-january-2020-novel-coronavirus-china/en/
  • WHO. (2020c). WHO Director – General’s Opening Remarks at the Media Briefing on COVID-19. Erişim Adresi https://www.who.int/director-general/speeches/detail/who-director-general-s-opening-remarks-at-the-media-briefing-on-covid-19---11-march-2020
  • Worldometer. (2021). Reported Cases and Deaths by Country or Territory. Erişim Adresi https://www.worldometers.info/coronavirus/?utm_campaign=homeAdvegas1?%22%20%5Cl%20%22countries#countries
  • Zakoian, J. M. (1994). Threshold Heteroskedastic Models, Journal of Economic Dynamics and Control, 18, 931-955.
  • Zaremba, A., Kizys, R., Aharon, D. Y. ve Demir, E. (2020). Infected Markets: Novel Coronavirus, Government Interventions, and Stock Return Volatility Around the Globe. Finance Research Letters, 35, 1-7.
  • Zhang, D., Hu, M. ve Ji, Q. (2020). Financial Markets under the Global Pandemic of COVID-19. Finance Research Letters, 36, 1-6.
APA ÜRKMEZ E (2022). COVID-19 SALGINININ S&P 500 ENDEKSİ OYNAKLIĞI ÜZERİNDEKİ ETKİSİ. , 47 - 60. 10.18092/ulikidince.939798
Chicago ÜRKMEZ EMRE COVID-19 SALGINININ S&P 500 ENDEKSİ OYNAKLIĞI ÜZERİNDEKİ ETKİSİ. (2022): 47 - 60. 10.18092/ulikidince.939798
MLA ÜRKMEZ EMRE COVID-19 SALGINININ S&P 500 ENDEKSİ OYNAKLIĞI ÜZERİNDEKİ ETKİSİ. , 2022, ss.47 - 60. 10.18092/ulikidince.939798
AMA ÜRKMEZ E COVID-19 SALGINININ S&P 500 ENDEKSİ OYNAKLIĞI ÜZERİNDEKİ ETKİSİ. . 2022; 47 - 60. 10.18092/ulikidince.939798
Vancouver ÜRKMEZ E COVID-19 SALGINININ S&P 500 ENDEKSİ OYNAKLIĞI ÜZERİNDEKİ ETKİSİ. . 2022; 47 - 60. 10.18092/ulikidince.939798
IEEE ÜRKMEZ E "COVID-19 SALGINININ S&P 500 ENDEKSİ OYNAKLIĞI ÜZERİNDEKİ ETKİSİ." , ss.47 - 60, 2022. 10.18092/ulikidince.939798
ISNAD ÜRKMEZ, EMRE. "COVID-19 SALGINININ S&P 500 ENDEKSİ OYNAKLIĞI ÜZERİNDEKİ ETKİSİ". (2022), 47-60. https://doi.org/10.18092/ulikidince.939798
APA ÜRKMEZ E (2022). COVID-19 SALGINININ S&P 500 ENDEKSİ OYNAKLIĞI ÜZERİNDEKİ ETKİSİ. Uluslararası İktisadi ve İdari İncelemeler Dergisi, 0(35), 47 - 60. 10.18092/ulikidince.939798
Chicago ÜRKMEZ EMRE COVID-19 SALGINININ S&P 500 ENDEKSİ OYNAKLIĞI ÜZERİNDEKİ ETKİSİ. Uluslararası İktisadi ve İdari İncelemeler Dergisi 0, no.35 (2022): 47 - 60. 10.18092/ulikidince.939798
MLA ÜRKMEZ EMRE COVID-19 SALGINININ S&P 500 ENDEKSİ OYNAKLIĞI ÜZERİNDEKİ ETKİSİ. Uluslararası İktisadi ve İdari İncelemeler Dergisi, vol.0, no.35, 2022, ss.47 - 60. 10.18092/ulikidince.939798
AMA ÜRKMEZ E COVID-19 SALGINININ S&P 500 ENDEKSİ OYNAKLIĞI ÜZERİNDEKİ ETKİSİ. Uluslararası İktisadi ve İdari İncelemeler Dergisi. 2022; 0(35): 47 - 60. 10.18092/ulikidince.939798
Vancouver ÜRKMEZ E COVID-19 SALGINININ S&P 500 ENDEKSİ OYNAKLIĞI ÜZERİNDEKİ ETKİSİ. Uluslararası İktisadi ve İdari İncelemeler Dergisi. 2022; 0(35): 47 - 60. 10.18092/ulikidince.939798
IEEE ÜRKMEZ E "COVID-19 SALGINININ S&P 500 ENDEKSİ OYNAKLIĞI ÜZERİNDEKİ ETKİSİ." Uluslararası İktisadi ve İdari İncelemeler Dergisi, 0, ss.47 - 60, 2022. 10.18092/ulikidince.939798
ISNAD ÜRKMEZ, EMRE. "COVID-19 SALGINININ S&P 500 ENDEKSİ OYNAKLIĞI ÜZERİNDEKİ ETKİSİ". Uluslararası İktisadi ve İdari İncelemeler Dergisi 35 (2022), 47-60. https://doi.org/10.18092/ulikidince.939798