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Historical Data

Open-Close data is a volume summary file of trading activity on the Cboe C1 exchange (does not include activity from C2, BZX, or EDGX) that summarizes the volume (contracts traded) by origin (customer and firm orders only), original order size and the opening or closing position of the order. The Open-Close volume is further broken into categories of buy/sell, open/close and order size "buckets". The data for all Cboe (C1) securities goes back to 1990 and contains all series in an underlying security's chain-if it has volume. The Open-Close data is available as a data download by individual underlying symbols, or as a daily update that includes all Cboe (C1) traded options for the previous trade day's data going forward, and as bulk data that includes all Cboe (C1) traded securities for the time frame chosen. Click here for Open-Close pricing.

*The Cboe Options Exchange (C1) will be migrating to Bats technology and is targeted for October 7, 2019. The C1 Open-Close file specification will change when the migration is completed, to see file specification for the before and after, please click here.
Open-Close data is a volume summary file for trading activity on the C2 exchange. It summarizes 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 is further broken down into trade size buckets (less than 100 contracts, 100-199 contracts, greater than 199 contracts). The data currently goes back to 1/2/2018 and contains all series in an underlying security's chain-if it has volume.
Open-Close data is a volume summary file for trading activity on the EDGX exchange. It summarizes 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 is further broken down into trade size buckets (less than 100 contracts, 100-199 contracts, greater than 199 contracts). The data currently goes back to 1/2/2018 and contains all series in an underlying security's chain-if it has volume.
Select your own custom interval from 1 minute to End-of-day, NBBO market quote and size are captured in every snapshot along with open, high, low, close and trading volume. In addition to NBBO markets, the BBO of each individual exchange is included in the data set. Underlying bid and ask prices are included at it interval for your reference.
Select your own custom interval from 1 minute to End-of-day, NBBO market quote and size are captured in every snapshot along with open, high, low, close and trading volume. The intervals with calcs data set includes midpoint implied volatility, Delta, Gamma, Theta, Vega and Rho at each interval. Underlying bid and ask prices are included at it interval for your reference.
Daily calculation inputs on select Cboe option strategy benchmarks and the monthly roll data.