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On the computation of hedging strategies in affine GARCH models

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  • Maciej Augustyniak
  • Alexandru Badescu

Abstract

This paper discusses the computation of hedging strategies under affine Gaussian GARCH dynamics. The risk‐minimization hedging strategy is derived in closed‐form and related to minimum variance delta hedging. Several numerical experiments are conducted to investigate the accuracy and properties of the proposed hedging formula, as well as the convergence to its continuous‐time counterpart based on the GARCH diffusion limit process. An empirical analysis with S&P 500 option data over 2001–2015 indicates that risk‐minimization hedging with the affine Gaussian GARCH model outperforms benchmark delta hedges. Our study also reveals that the variance‐dependent pricing kernel contributes to improving the hedging performance.

Suggested Citation

  • Maciej Augustyniak & Alexandru Badescu, 2021. "On the computation of hedging strategies in affine GARCH models," Journal of Futures Markets, John Wiley & Sons, Ltd., vol. 41(5), pages 710-735, May.
    • Handle: RePEc:wly:jfutmk:v:41:y:2021:i:5:p:710-735
    DOI: 10.1002/fut.22187
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    4. Che Guo & Xingchun Wang, 2022. "Pricing vulnerable options under correlated skew Brownian motions," Journal of Futures Markets, John Wiley & Sons, Ltd., vol. 42(5), pages 852-867, May.
    5. Augustyniak, Maciej & Badescu, Alexandru & Bégin, Jean-François, 2023. "A discrete-time hedging framework with multiple factors and fat tails: On what matters," Journal of Econometrics, Elsevier, vol. 232(2), pages 416-444.

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