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  • Asset Type: Options Remove
  • Data Type: Skew Remove
  • Data Type: Volume Summary Remove
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Historical Data

Volatility skew data allows users to analyze relative option pricing levels over time series by comparing “virtual” option strikes with identical time to maturity and levels relative to spot. Our Volatility Skew files show the implied volatility levels of virtual options expiring at constant maturities, with option strikes defined by either moneyness (% from spot) or by option delta. These files allow for more appropriate comparison of implied volatility levels over time. LiveVol volatility skew data is provided with either moneyness increments (5% steps from spot from 0-60%, with additional values at 2.5% from spot) or delta increments (5 delta increments for both calls and puts). Standard maturity periods range from 30 to 360 calendar days. An auxiliary set of skew index data will be provided with each purchase. Skew indexes represent a measure of option skew by symbol and maturity for a particular day. Delta skew data is used to generate the skew index metrics: for example, SKEW90 represents the (IV of 25 delta put – IV of 25 delta call)/(50 delta call IV) for virtual options expiring in 90 days.
Open-Close data is a volume summary file for trading activity on the BZX 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 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.
Optsum data is an end of day index option summary for CBOE traded options in ^SPX, ^OEX, and ^VIX with volume traded, open interest, open, high, low and last sales prices for every series in chain. The Optsum data is available from 1990 through 9/30/2019, or based on the index option availability in ^SPX, ^OEX, and ^VIX.

* If you are interested in ^SPX, ^VIX, or ^OEX option quotes data for dates after 9/30/2019, please go to the End of Day Option Quotes (https://datashop.cboe.com/option-quotes) or End of Day Option Quotes with Calcs (https://datashop.cboe.com/option-quotes-end-of-day-with-calcs) pages for similar datasets. Both EOD Option Quotes datasets provide data beginning in 2004 for all equity and index options.