A Multidimensional Analysis of the Relationship Between Systematic Risk Indicators and Stock Market Returns in Tehran Stock Exchange
Keywords:
Systematic risk, market return, beta, economic policy uncertainty, market sentiment, skewness, elasticityAbstract
This study aims to comprehensively examine the impact of various systematic risk indicators, including beta, economic policy uncertainty, investor sentiment, and higher-order moments, on stock market returns. This applied, descriptive–analytical study utilizes monthly panel data from 85 actively traded firms on the Tehran Stock Exchange covering 2011–2023. Data were collected from official financial and economic databases and analyzed using multiple linear and nonlinear regression models in EViews and Stata. Key variables included market return, beta, economic policy uncertainty index, investor sentiment index, systematic skewness, and systematic kurtosis, while economic instability periods such as sanctions were incorporated through interaction terms. The results indicate that beta, economic policy uncertainty, and investor sentiment exert a positive and statistically significant effect on market returns, whereas systematic skewness shows a significant negative effect and systematic kurtosis exhibits no significant impact. Moreover, the risk–return relationships intensify significantly during sanction and macroeconomic instability periods, and the proposed model demonstrates satisfactory explanatory power with an R² of 0.34. The findings confirm that systematic risk is inherently multidimensional, and reliance on beta alone is insufficient for explaining market behavior in emerging economies, underscoring the necessity of adaptive and comprehensive risk models for Iran’s capital market.
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References
Asadi, H., & Najafi, M. (2019). Systematic risk management in emerging markets: A case study of the Iranian stock market. Analytical Financial Knowledge, 10(2), 89-102.
Baker, M., Bloom, N., & Davis, S. (2016). Measuring Economic Policy Uncertainty. The Quarterly Journal of Economics, 131(4), 1593-1636. https://doi.org/10.1093/qje/qjw024
Bali, T. G., Engle, R. F., & Murray, S. (2016). Empirical Asset Pricing: The Cross Section of Stock Returns. John Wiley & Sons. https://doi.org/10.1002/9781118445112.stat07954
Chen, L., Hong, H., & Stein, J. C. (2025). Predicting systemic risk with marginal expected shortfall. Financial management, 54(2), 101-124.
Dugbartey, A. N. (2025). Systemic Financial Risks in an Era of Geopolitical Tensions, Climate Change, and Technological Disruptions: Predictive Analytics, Stress Testing and Crisis Response Strategies. International Journal of Science and Research Archive, 14(2), 1428-1448. https://doi.org/10.30574/ijsra.2025.14.2.0563
Fama, E. F., & French, K. R. (2015). A five-factor asset pricing model. Journal of Financial Economics, 116(1), 1-22. https://doi.org/10.1016/j.jfineco.2014.10.010
Gao, Y., Rojasavachai, R., Rouxelin, F., & Yang, L. (2025). Financial Illiteracy as a Systemic Risk: Implications for Household Resilience and Portfolio Vulnerability.
Ghallabi, F., Ghorbel, A., & Karim, S. (2025). Decoding systemic risks across commodities and emerging market stock markets. Financial Innovation, 11, 47. https://doi.org/10.1186/s40854-024-00732-1
Ghazanfari, M., & Araghi, M. (2018). Investigating the impact of macroeconomic variables on stock returns in Iran. International Journal of Economics and Financial Issues, 8(4), 201-212.
Ghazani, M., & Araghi, M. (2018). Investigating the Effect of Macroeconomic Variables on Stock Returns in Iran. International Journal of Economics and Financial Issues, 8(4), 102-108.
Gholami, R., & Zahedi, A. (2021). Analysis of the relationship between systematic risk and stock returns under different economic conditions. Financial Management Studies Quarterly, 11(3), 44-58.
Hosseini, S. J., & Ramezani, M. (2022). Analysis of the relationship between economic uncertainty and stock market volatility in Iran. Analytical Financial Knowledge, 14(2), 111-125.
Imf. (2021). World Economic Outlook: Managing Divergences and Debt Challenges. https://www.imf.org/en/Publications/WEO
Lyu, Y., Yi, H., Yang, M., Zou, Y., Li, D., & Qin, Z. (2025). Financial uncertainty shocks and systemic risk: Revealing the risk spillover from the oil market to the stock market. Applied Energy, 382, 125311. https://doi.org/10.1016/j.apenergy.2025.125311
Mohammadi, A., & Arab, M. (2023). Investigating the role of higher-order risk moments in determining stock returns in the Iranian stock market. Scientific-Research Quarterly of Financial Management, 15(4), 101-118.
Pallante, G., Guerini, M., Napoletano, M., & Roventini, A. (2025). Robust-less-fragile: Tackling systemic risk and financial contagion in a macro agent-based model. Journal of Financial Stability, 76, 101352. https://doi.org/10.1016/j.jfs.2024.101352
Pampurini, F., & Quaranta, A. G. (2025). Measuring Systemic Risk: A Review of the Main Approaches. In V. Pacelli (Ed.), Systemic Risk and Complex Networks in Modern Financial Systems. Springer, Cham. https://doi.org/10.1007/978-3-031-64916-5_11
Saadati, S. M., & Nemati, H. (2021). The impact of market sentiment risk on the returns of selected industries in the Tehran Stock Exchange. Analytical Financial Knowledge, 13(1), 78-92.
Sadeghi, A., & Safari, M. (2020). Analyzing the Impact of Investor Sentiment on Stock Market Returns in an Islamic Framework. Journal of Islamic Banking and Finance Research, 5(2), 45-60. https://doi.org/10.22444/jibfr.2020.5.2.5
Safarzadeh, M., Rezaei, S., & Dehghan, M. (2020). Investigating the impact of systematic risk on stock returns in the Tehran Stock Exchange. Financial Research Quarterly, 12(3), 45-60.
So, M. K., Chan, T. W., & Chu, A. M. (2024). Bayesian Systemic Risk Analysis using Latent Space Network Models. Data Science in Science, 3(1), 2381724. https://doi.org/10.1080/26941899.2024.2381724
Tang, P., Tang, T., & Lu, C. (2024). Predicting systemic financial risk with interpretable machine learning. The North American Journal of Economics and Finance, 71, 102088. https://doi.org/10.1016/j.najef.2024.102088
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Copyright (c) 2025 Abbasali Haghparast (Corresponding author); Amir Salari (Author)
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
