THE IMPLIED VOLATILITY OF ETF AND INDEX OPTIONS

Stoyu I. Ivanov, Jeff Whitworth and Yi Zhang

The International Journal of Business and Finance Research, 2011, vol. 5, issue 4, 35-44

Abstract: We examine the option-implied volatility of the three most liquid ETFs (Diamonds, Spiders, and Cubes) and their respective tracking indices (Dow 30, S&P 500, and NASDAQ 100). We find that volatility smiles for ETF options are more pronounced than for index options, primarily because deep-in-themoney ETF options have considerably higher implied volatility than deep-in-the-money index options. The observed difference in implied volatility is not due to a difference between the realized return distributions of the underlying ETFs and indices. Differences in implied volatility for ETF and index options also do not appear to be explained by discrepancies in net buying pressure, as theorized by Bollen and Whaley (2004).

Keywords: exchange-traded funds; index options; implied volatility; open interest (search for similar items in EconPapers)
JEL-codes: G11 G12 (search for similar items in EconPapers)
Date: 2011
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Persistent link: https://EconPapers.repec.org/RePEc:ibf:ijbfre:v:5:y:2011:i:4:p:35-44

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