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The Journal of Financial Data Science

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Volatility Prediction and Risk Management: An SVR-GARCH Approach

Abdullah Karasan and Esma Gaygisiz
The Journal of Financial Data Science Fall 2020, jfds.2020.1.046; DOI: https://doi.org/10.3905/jfds.2020.1.046
Abdullah Karasan
is a principal data scientist at Magnimind Academy in Sunnyvale, CA, and the Department of Financial Mathematics of Middle East Technical University in Ankara, Turkey
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Esma Gaygisiz
is an associate professor in the Department of Economics at Middle East Technical University in Ankara, Turkey.
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Abstract

This study aims first at improving volatility prediction using a machine learning model called support vector regression GARCH (SVR-GARCH) using selected 30 stocks listed on the S&P 500. The authors compare the prediction results of the SVR-GARCH model with the GARCH family models and find that SVR-GARCH outperforms these models based on the performance metrics. The second goal of this study is to calculate value-at-risk (VaR) using predictions obtained in the previous part. Moreover, backtesting is applied to check the accuracy of the VaR results. The findings suggest that using predictions obtained from the SVR-GARCH model boosts VaR calculations and hence provides better financial risk management.

TOPICS: Big data/machine learning, risk management, simulations, statistical methods, VAR and use of alternative risk measures of trading risk, volatility measures

Key Findings

  • • Machine learning–based implementations in finance can lead to improved performance.

  • • Volatility prediction based on the SVR-GARCH machine learning–based volatility prediction model outperforms traditional volatility prediction models, making it possible to have more accurate financial models.

  • • Using volatility prediction in the value-at-risk model yields far better results, implying that, given the better-performing volatility model, it is likely to manage financial risk better than ever.

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The Journal of Financial Data Science: 4 (2)
The Journal of Financial Data Science
Vol. 4, Issue 2
Spring 2022
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Volatility Prediction and Risk Management: An SVR-GARCH Approach
Abdullah Karasan, Esma Gaygisiz
The Journal of Financial Data Science Sep 2020, jfds.2020.1.046; DOI: 10.3905/jfds.2020.1.046

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Volatility Prediction and Risk Management: An SVR-GARCH Approach
Abdullah Karasan, Esma Gaygisiz
The Journal of Financial Data Science Sep 2020, jfds.2020.1.046; DOI: 10.3905/jfds.2020.1.046
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  • Article
    • Abstract
    • TRADITIONAL VOLATILITY MODELS
    • EMPIRICAL APPLICATION
    • RISK MANAGEMENT
    • CONCLUSION
    • ADDITIONAL READING
    • APPENDIX A
    • APPENDIX B
    • APPENDIX C
    • APPENDIX D
    • REFERENCES
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