Abstract

AbstractWe examine the economic benefits of using realized volatility to forecast future implied volatility for pricing, trading, and hedging in the S&P 500 index options market. We propose an encompassing regression approach to forecast future implied volatility, and hence future option prices, by combining historical realized volatility and current implied volatility. Although the use of realized volatility results in superior performance in the encompassing regressions and out‐of‐sample option pricing tests, we do not find any significant economic gains in option trading and hedging strategies in the presence of transaction costs.

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