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Liquidity and Price Informativeness of Options: Evidence From Extended Trading Hours

Author

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  • Liangyi Mu
  • Arie E. Gozluklu

Abstract

This paper explores the trading dynamics of the options market during extended trading hours (ETHs). During ETH, the options market is characterized by low liquidity and decreased trading activities, yet there is an increased likelihood of informed trading. The introduction of ETH improves overall market liquidity on the following trading day, as reflected by a reduction in the quoted and effective bid–ask spreads, for both index options and their underlying constituents. The improvement of liquidity is due to the timely incorporation of overnight news into option prices during ETH. Moreover, option prices during ETH are informative for the index level and realized volatility in the subsequent regular trading hours.

Suggested Citation

  • Liangyi Mu & Arie E. Gozluklu, 2025. "Liquidity and Price Informativeness of Options: Evidence From Extended Trading Hours," Journal of Futures Markets, John Wiley & Sons, Ltd., vol. 45(11), pages 2013-2033, November.
    • Handle: RePEc:wly:jfutmk:v:45:y:2025:i:11:p:2013-2033
    DOI: 10.1002/fut.70026
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    References listed on IDEAS

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