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Our end-of-day option quotes file actually provides two snapshots of market quote and size, one at 15:45 and another at the market close (market closing time is product dependent). Summary trading data is also included in the files. The first, last, lowest and highest trade in every series, as well as, the total volume, VWAP and open interest. Sign up for a one month or one year subscription and receive a daily delivery of your files via our FTP site. Effective February 5, 2020 on half trading days, the value in the "1545" column will be taken at 12:45 pm ET and the column name of 1545 will be unchanged.
Our end-of-day option quotes witch Calcs file provides all of the fields in the end-of-day Option quotes file plus market implied volatility for each option, as well as, the greeks (Delta, Gamma, Theta, Vega and Rho). Implied volatility and Greeks are calculated off of the 1545 timestamp, since it is considered a more accurate snapshot of market liquidity than the end of day market. Sign up for a one month or one year subscription and receive a daily delivery of your files via our FTP site. Effective February 5, 2020 on half trading days, the value in the "1545" column will be taken at 12:45 pm ET and the column name of 1545 will be unchanged.
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. Sign up for a one month or one year subscription and receive a daily delivery of your files via our FTP site.
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. Sign up for a one month or one year subscription and receive a daily delivery of your files via our FTP site.
Our option trades files have the supporting information needed to provide context to trading activity. Included with each trade is the trade price and size, the exchange where the trade printed, the NBBO quote and depth, the underlying bid and ask, and each of the individual exchange markets. Sign up for a one month or one year subscription and receive a daily delivery of your files via our FTP site. Trades from Global Trading Hours (GTH) will be included effective February 5, 2020. GTH trades will be signified by a time stamp between 3:00 am ET and 9:15 am ET. At this time only ^SPX and ^VIX trade during GTH.
Our option trades files have the supporting information needed to provide context to trading activity. Included with each trade is the trade price and size, the exchange where the trade printed, the NBBO quote and depth, the underlying bid and ask, and each of the individual exchange markets. With the addition of our Calcs data, you receive the implied volatility and the calculated delta of the trade. Sign up for a one month or one year subscription and receive a daily delivery of your files via our FTP site. Trades from Global Trading Hours (GTH) will be included effective February 5, 2020. GTH trades will be signified by a time stamp between 3:00 am ET and 9:15 am ET. At this time only ^SPX and ^VIX trade during GTH.
Open-Close data is a volume summary file for trading activity on the C1 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 in this format currently goes back to 1/2/2018 and contains all series in an underlying security's chain-if it has volume on C1. For pricing, please see “LiveVol Fees” in the Cboe Exchange Fee Schedule.

Cboe Hanweck Borrow Intensity Indicators describe constant maturity synthetic lending rates derived from real-time option analytics. Borrow Intensity Indicators are a proprietary calculation based upon implied borrow, enhanced with machine learning using characteristics including relative liquidity and term in order to create constant maturities of 45, 60, 90, 180, and 360 days.


Borrow Intensity Indicators may enhance:

  • Equity trading strategies
    • Higher frequency and timeliness than equity risk model short interest factors
  • Securities lending price discovery
    • Informs on levels and trends in overnight stock-borrow loan rates, highlighting rising shorts or other conditions in the collateral market such as persistent mildly hard-to-borrow securities

Borrow Intensity Indicator Attributes:

  • Includes:
    • Securities underlying US listed options (approximately 4,000 symbols)
    • Raw and smoothed form
    • Confidence measures supporting interpretation for every observation
  • Availability:
    • Current: 20 minute intervals, intraday
    • Historical: Back to 2010 (Sold separately)
  • Granularity:
    • Milliseconds
  • Format:
    • CSV Files
  • Delivery Method:
    • SFTP

For the file specifications, please click here
For the methodology overview, please click here

If you would like to purchase a historical backfill of this data-set, please order it here: Borrow Intensity Indicators
Cboe LiveVol Implied Volatility Blends capture term structure and solve for expiration-specific and constant maturity implied volatilities encapsulated within the range of option expirations. Capturing the constant maturity volatilities helps traders visualize and track the behavior of volatility over time providing context to current market implied volatility. To build out our volatility blends we first solve for the at-the-money volatility of each expiration to capture the term-structure of the volatility. Next, using a cubic spline approach, we fit a curve to the term-structure. Using the fitted curve, we solve for the constant maturity (IV30, IV60, IV90, etc.) time periods offered in the file. *Constant maturity times that fall outside the range of expirations available for a particular symbol will be zero. This dataset is only available with end of day granularity.
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.