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  • Asset Type: Options Remove
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  • Data Type: Volume Summary Remove
  • Data Type: Constituents & Roll Remove
  • Purchase Type: Annual Subscription Remove

Data Subscriptions

Open-Close data is a volume summary file for trading activity on the C1 exchange. Available in 10-minute summary intervals or as an end-of-day summary, it aggregates and buckets the volume by origin (customer, professional customer, broker-dealer, and market maker), buying/selling, and opening/closing criteria. The customer and professional customer volume are further broken down into trade size buckets (fewer than 100 contracts, 100-199 contracts, greater than 199 contracts). Fields 10-17 will only be available in the end-of-day files and will not be populated in the 10-minute intervals. It contains all series in an underlying security's chain-if it has volume on C1. End-of-day data is delivered overnight after midnight U.S. Eastern, 10-minute files are delivered intraday a few minutes after each interval closes. For pricing, please see “LiveVol Fees” in the Cboe Exchange Fee Schedule.


To purchase historical data, please see Open-Close C1 Historical


Open-Close subscriptions are also available for: BZX, C2, and EDGX


The downloadable sample contains 2 files: 1 sample of the EOD format, 1 of the 10-minute

Product File Change Notice:

On Aug 2, 2021 product file changes will go into effect. Please see the change doc and new sample set for detailed information. All customers have access to this new format ahead of the transition. New subscribers do not need to use the old format.


Daily calculation inputs on select Cboe option strategy benchmarks and the monthly roll data.


Please refer to more index information on:
https://www.cboe.com/us/indices/benchmark_indices/
https://www.cboe.com/us/indices/benchmark_roll_information/