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Equity FLEX Options Product Specifications

The Exchange may approve and open for trading any FLEX options series on any index, equity, ETF, or ETN that is eligible for Non-FLEX options trading in accordance with the Exchange's listing criteria, even if there are no Non-FLEX options on such listed on the Exchange. These include, but are not limited to, the following:

Trading Hours

Index Flex

  • Regular Trading Hours: 8:30 a.m. to 3:15 p.m. Chicago Time
  • Curb Trading Hours: 3:15 p.m. to 4:00 p.m. Chicago Time*

*Only available for SPX and SPX Weeklys (SPXW)

Equity Flex

  • Equity FLEX trading hours are 8:30 a.m. to 3:00 p.m. Chicago time
  • For trading hours on FLEX options on ETF and ETN products, please refer to the contract specifications

Index Flex

  • S&P 500 (standard and mini XSP)
  • Russell 2000 (RUT)
  • MSCI EAFE (MXEA)
  • MSCI Emerging Markets (MXEF)
  • DJIA (DJX)
  • Nasdaq-100 (NDX)

Equity Flex

FLEX trading is available for all Cboe-listed equity, ETF, and ETN options.