The Investigation of TSE Efficiency: An Emerging Market involved in pandemic, and Economic Sanctions

Sadr Ara, Mehrdad; Miraskari, Seyed Reza

doi:10.48308/jep.2025.236393.1178

The Investigation of TSE Efficiency: An Emerging Market involved in pandemic, and Economic Sanctions

Document Type : Original Article

Authors

Assistant Professor, Department of Economics and Accounting, University of Guilan, Iran.

10.48308/jep.2025.236393.1178

Abstract

This study examines the efficiency of Iranian capital market after the imposition of economic sanctions, currency crisis and Covid 19 pandemic. Some events after 2008 have fundamentally changed the Iranian capital market environment and we expect these reforms to change the level of market efficiency. This research investigates the daily returns behavior in Tehran Stock Exchange (TSE) utilizing autocorrelation, augmented Dickey-Fuller, and runs tests over the period 2008-2022. The statistical significance of the data was assessed using both parametric and nonparametric test statistics. The results confirm that the Tehran Stock Exchange index has been affected by the Covid-19 pandemic crisis. It was also further revealed that economic and banking sanctions have had a direct impact on the Iranian economy and the Tehran Stock Exchange market, such that after the approval of each of the sanctions, significant structural failures were observed in the trend of the Tehran Stock Exchange index. And also the results indicate that all tests don’t support that TSE daily returns follow random walk. Therefore, we conclude that in the Iranian capital market, abnormal returns can still be obtained by using technical and fundamental analysis.The study's contribution might have been compromised by the absence of socio-demographic, technical, financial and other significant policy factors from the analysis.This paper is the first to examine the efficiency of the capital market at a weak form, during the period of the Covid-19 pandemic and the imposition of international sanctions against the Iranian economy.

Keywords

References

Abraham, A., Seyyed, F.J., & Alsakran, S.A. (2002). “Testing the Random Behaviour and Efficiency of the Gulf Stock Markets”, The Financial Review, 37(3): 469-480.

Adelegan, O. J. (2003). “Capital Market Efficiency and Effects of Dividend Announcement on Share Prices in Nigeria”, African Development Review, 15(2, 3): 218-236.

Adnan, A. T. M, (2022). “Asian perspective of capital market performance amid the COVID 19 pandemic”, Asian Journal of Accounting Research.

Alam M. I., Hasan T. and Kadapakkam, P. (1999). “An Application of Variance Ratio Test to Five Asian Stock Markets”, Review of Pacific Basin Financial Markets and Policies, 2: 301-315.

Al-Jafari, M. K., (2011). “Testing the Weak-Form Efficiency of Bahrain Securities Market”, International Research Journal of Finance and Economics, 72: 14-24.

Al-Jafari, M.K. and Altaee, H.H.A., (2011). “Testing the Random Walk Behavior and Efficiency of the Egyptian Equity Market”, Journal of Money, Investment and Banking, Issue 22:132-146.

Allahyari, A. (2009). “The Investigation of Tehran Stock Exchange Weak-Form Efficiency”, Quarterly Journal of Securities Exchange, 1(4): 75-108.

Baker, S.R., Bloom, N., Davis, S.J., Kost, K., Sammon, M. and Viratyosin, T. (2020), “The unprecedented stock Pmarket reaction to COVID-19”, The Review of Asset Pricing Studies, 10(4): 742-758.

Beneda, N. (2005). “Managing an Asset Management Firm’s Risk Portfolio”, Journal of Asset Management, 5(5): 327- 337.

Box, G. E. P. and Pierce, D. A. (1970). “Distribution of Residual Autocorrelations in Autoregressive-Integrated Moving Average Time Series Models”, Journal of the American Statistical Association, 65: 1509-1526.

Butler, K. C. and Malaikah, S. J. (1992). “Efficiency and Inefficiency in Thinly Traded Stock Markets: Kuwait and Saudi Arabia”, Journal of Banking and Finance, 16: 197–210.

Caggiano, G., Castelnuovo, E. and Kima, R. (2020), “The global effects of Covid-19-induced uncertainty”, Economics Letters, 194: 109392.

Chaudhuri, K. and Wu, Y. (2003). “Random Walk Versus Breaking Trend in Stock Prices: Evidence from Emerging Markets”, Journal of Banking and Finance, 27: 575–592.

Cooray, A. and Wickremasinghe, G. (2005). “The Efficiency of Emerging Stock Markets: Empirical Evidence from the South Asian Region”, Discussion Paper, University of Tasmania.

Dicky, D. A. and Fuller, W. A. (1981). “Likelihood Ratio Statistics for Autoregressive Time Series with a Unit Root”, Econometrica, 49: 1057-1072.

Emenike, Kalu O.; Joseph, Kirabo K. B. (2018). “Empirical evaluation of weak-form efficient market hypothesis in Ugandan securities exchange”, Journal of Contemporary Economic and Business Issues, ISSN 1857-9108, Ss. Cyril and Methodius University in Skopje, Faculty of Economics, Skopje, 5(1): 35-50.

Fadaeenejad, E. (1994). “Weak-Form Test of the Capital Market Efficiency and Tehran Stock Exchange”, Financial Researches, 2(5).

Fama, E. (1970). “Efficient Capital Markets: A Review of Theory and Empirical Work”, Journal of Finance, 25(2): 384-417.

Fama, E. (1991). “Efficient Capital Markets: II”, Journal of Finance, 46(5): 1575-1617.

Fama, E., and K. French (1987). “Permanent and Temporary Components of Stock Prices,” Journal of Political Economy, 96(2): 246-273.

Fuss, R. (2005). “Financial Liberalization and Stock Price Behavior in Asian Emerging Markets”, Economic Change and Restructuring, 38: 37–62.

Gereffi, G. (2020), “What does the COVID-19 pandemic teach us about global value chains? The case of medical supplies”, Journal of International Business Policy, 3(3): 287-301.

Gu, A. Y. and Finnerty, J. (2002). “The Evolution of Market Efficiency: 103 Years Daily Data of the Dow”, Review of Quantitative Finance and Accounting, 18: 219-237.

Guidi, F., Gupta, R. and Maheshwari, S. (2010). “Weak Form Market Efficiency and Calendar Anomalies for Eastern Europe Equity Markets”, MPRA Paper No. 21984. Online at http://mpra.ub.uni-muenchen.de/21984/.

Gujarati, D. (2003). Basic Econometrics (4th Ed.), McGraw-Hill, Singapore.

Harris, R. I. D. (1992a). “Testing for Unit Roots Using the Augmented Dickey-Fuller Tests: Some Issues Relating to the Size, Power and the Lag Structure of the Test”, Economic Letters, 38: 381-386.

Hatmanu, M.; Cautisanu,C. (2021) “The Impact of COVID-19 Pandemic on Stock Market: Evidence from Romania. International Journal of Environmental Research and Public Health, 18, 9315. https://doi.org/10.3390/ijerph18179315.

Jarrett, J. and Kyper E. (2006). “Capital Market Efficiency and the Predictability of Daily Returns”, Applied Economics, 38: 631-6.

Jarrett, J. and Kyper, E. (2005a). “Daily Variation, Capital Market Efficiency and Predicting Stock Returns”, Management Research News, 28(8): 34-47.

Jarrett, J. E. (2008). “Random Walk, Capital Market Efficiency and Predicting Stock Returns for Hong Kong Exchanges and Clearing Limited”, Management Research News, 31(2): 142-148.

Karemera, D., Ojah, K., and Cole, J. A. (1999). “Random Walks and Market Efficiency Tests: Evidence from Emerging Equity Markets”, Review of Quantitative Finance and Accounting, 13: 171-188.

Kelishomi, A. M. & Nistico, R, (2022), “Employment effects of economic sanctions in Iran”, World Development, 151: 105760.

Kompa, K. and Matuszewska-Janica, A. (2009). “Efficiency of the Warsaw Stock Exchange: Analysis of Selected Properties”, International Advances in Economic Research, 15: 59-70.

Lakatos, I. (1970). History of science and its rational reconstructions.

Lo, A.W. and MacKinley, A.C. (1988). “Stock Market Prices Do Not Follow a Random Walk: Evidence from a Simple Specification Test”, Review of Financial Studies, 1: 41-66.

Lu, S. Q. and Ito, T. (2010). “Testing and Analyzing Efficiency of Chinese Stock Markets”, International Review of Applied Financial Issues and Economics, 2(3).

Magnusson, M. A. and Wydick, B. (2002). “How Efficient are Africa’s Emerging Stock Markets,” Journal of Development Studies, 38: 141-156.

Majnoni, G. and Massa, M. (2001). “Stock Exchange Reform and Market Efficiency: The Italy Experience”, European Financial Management, 7(1): 93-115.

Malkeil, B. G. (2003). “The Efficient Market Hypothesis and Its Critics”, Journal of Economic Perspectives, 17(1): 59-82.

Maloumian, N. (2022). “Unaccounted forms of complexity: A path away from the efficient market hypothesis paradigm”, Social Sciences & Humanities Open, 5(1): 2022, 100244.

Miraali, F., Isazadeh, S. & Hosseinidoust, S. E. (2022). “Evaluating the Effect of Sanctions imposed on the Economy in Iran on Foreign Direct Investment Using Synthetic Control Method” Iranian Journal of Economic Studies. 11(1): 31-57.

Miraskari, S.R. and Rezaei Pitenoei, Y. (2024), "Investigating the factors influencing ease of doing business in Gilan province", Business Process Management Journal, 30(7): 2642-2664. https://doi.org/10.1108/BPMJ-01-2024-0032.

Mishra, P.K. and Mishra, S.K. (2021), “COVID-19 pandemic and stock market reaction: empirical insights from 15 Asian countries”, Transnational Corporations Review, 13(2): 139-155.

Movasaghi, S. A. (2005), Iran's political economy during the Islamic Republic, Journal of the Faculty of Law and Humanities, Vol 17.

Namazi, M. and Shushtarian, Z. (1996). “Studying of Stock Exchange Efficiency in Iran”, Financial Research, No. 7&8.

Narayan, P. K. and Smyth. R. (2006). “Random Walk versus Multiple-Trend Breaks in Stock Prices: Evidence from Fifteen European Markets”, Applied Financial Economics Letters, 2: 1–7.

Narayan, P.K. and Smyth, R. (2004). “Is Korea’s Stock Market Efficient?”, Applied Economics Letters, 11:707–710.

Narayan, P.K. and Smyth. R. (2005). “Are OECD Stock Prices Characterized by a Random Walk?: Evidence from Sequential-Trend Break and Panel Data Models”, Applied Financial Economics, 15: 547–556.

Nasrollahi, Z. (1992). “Performce Analysis of Iran's Stock Exchange”, M.A Thesis of Economy, Tarbiat Moddaress University, Human Arts Faculty.

Noferesti, M. (2000). “Unit Root and Cointegration in Economics”, Rasa Cultural Services Institute, Tehran.

Papakyriakou, P., Sakkas, A. and Taoushianis, Z. (2019), “The impact of terrorist attacks in G7 countries on international stock markets and the role of investor sentiment”, Journal of International Financial Markets, Institutions and Money, 61: 143-160.

Pearce, D. G. (1987). “Renegotiation-Proof Equilibria: Collective Rationality and Intertemporal Cooperation”, Cowles Foundation Discussion Paper, No. 855.

Peksen, D. and A. C. Drury (2009). "Economic sanctions and political repression: Assessing the impact of coercive diplomacy on political freedoms." Human Rights Review, 10(3): 393-411.

Piri, M. and R. Sohrabi (2020). " The U.S. Extraterritorial Sanctions against Iran and its Compatibility with the World Trade Organization Rules." Public Law Studies Quarterly, 50(4).

Poterba, J. M. and Summers, L. H. (1988). “Mean Reversion in Stock Prices: Evidence and Implications”, Journal of Financial Economics, 22: 27-59.

Saeedi, A. Miraskari, S. R. & Sadr Ara, M, (2014), “The Investigation of the Efficient Market Hypothesis: Evidence from an Emerging Market”, Taylor’s Business Review, 4(2): 121- 134.

Shokri, M., et al. (2020). "Investigating the Impact of Economic Sanctions and Exchange Rate Uncertainty on FDI in Iran: A Fuzzy Approach." Journal of Economics and Modeling 11(3): 33-59.

Singh, R. (2010). “Globalization and Capital Market Reforms: Impact on Efficiency of the Indian Stock Market”, Decision, 37(2): 5-29.

Squalli, J. (2006). “A Non-Parametric Assessment of Weak-Form Efficiency in the UAE Financial Markets”, Applied Financial Economics, 16: 1365–1373.

Titan, A, (2015). “The efficient market hypothesis: Review of specialized literature and empirical research”, Procedia Economics and Finance, 32 (2015): 442-449.

Urrutia, J. L. (1995). “Tests of Random Walk and Market Efficiency for Latin American Emerging Equity Markets”, Journal of Financial Research, 18(3): 299-309.

Woo, Kai-Yin, Chulin Mai, Michael McAleer, and Wing-Keung Wong. (2020). "Review on Efficiency and Anomalies in Stock Markets", Economies 8, no. 1: 20. https://doi.org/10.3390/economies8010020.

Yilmazkuday, H. (2022), “Coronavirus disease 2019 and the global economy”, Transport Policy, 120: 40-46.