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arXiv · 2112.05302

Realized GARCH, CBOE VIX, and the Volatility Risk Premium

Peter Reinhard Hansen·Zhuo Huang·Chen Tong·Tianyi Wang
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Abstract

We show that the Realized GARCH model yields close-form expression for both the Volatility Index (VIX) and the volatility risk premium (VRP). The Realized GARCH model is driven by two shocks, a return shock and a volatility shock, and these are natural state variables in the stochastic discount factor (SDF). The volatility shock endows the exponentially affine SDF with a compensation for volatility risk. This leads to dissimilar dynamic properties under the physical and risk-neutral measures that can explain time-variation in the VRP. In an empirical application with the S&P 500 returns, the VIX, and the VRP, we find that the Realized GARCH model significantly outperforms conventional GARCH models.

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Peter Reinhard Hansen, Zhuo Huang, Chen Tong, Tianyi Wang. 2021-12-10. Realized GARCH, CBOE VIX, and the Volatility Risk Premium. https://arxiv.org/abs/2112.05302

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