CME Group Volatility Index (CVOL™)

The global volatility benchmark index, derived from the world’s most actively traded options on futures, across major asset classes. Available in real-time streaming and daily benchmarks.

Multi-asset class coverage

Derived from extremely liquid option contracts, traded on CME Group exchanges and creates a consistent and tractable metric across different products and asset classes.

Transparent and user-friendly calculation

CVOL replicates an equivalent simple variance options portfolio from equal weighted option strips which also produces its auxiliary indicators, DnVar, UpVar, Skew, Convexity and ATM.

Daily benchmark and live streaming versions

Access and monitor both a daily (end-of-day) official benchmark CVOL calculation as well as a live streaming CVOL Index.

CVOL Index

The CME Group Volatility Index (CVOL) delivers the first ever cross-asset class family of implied volatility indices based on simple variance. Using our proprietary simple variance methodology that assigns equal weighting to strikes across the entire implied volatility curve, the CVOL Index produces a more representative measure of the market’s expectation of 30-day forward risk.

In accessing this proprietary data from this website, you acknowledge you have read and agree to all CME Data Terms of Use. To discuss licensing options, please contact CME Data Sales.


How to access

Oversight committee

The oversight committee will provide independent governance, and challenge to the Administrator on all aspects of the benchmark determination process in accordance with the Oversight Committee Terms of Reference.

Carrick Pierce (Chair)

CME Group Commodities and Option Solutions

Graham Stride

CME Group Benchmark Administration

Chris Povey

CME Group FX

John Wiesner

CME Group Commodities and Options Solutions

David Reif

CME Group Interest Rates

Jeff White

CME Group Energy Products

Eric Leininger

CME Group Research and Product Development

Udesh Jha

CME Clearing and Post Trade Services

Download CVOL trading grids for CME Direct

  1. Right-click the link for the relevant grid
  2. Save the file as an .XML on your computer.
  3. In CME Direct, select Import View in the main menu.
  4. Import the grid into CME Direct.
  5. Under Menu, click on Save Window Layout.

How the CVOL Index works

CVOL Indexes measure the expected risk or volatility of an underlying futures contract based on the information contained in the prices of options on that underlying futures contract. CVOL Indexes are generated using simple, or Gaussian, variance, as the base to provide a consistent and tractable metric that can be compared across different individual products for a given asset class, and additionally within and across asset classes themselves.

CVOL Indexes use the option prices from two tenors (expirations) of options in order to generate a time weighted average that centers on 30 days. Each of the two tenors has its own variance metric which uses the actual option prices to estimate the area under the curve of expected market outcomes for that tenor. Each option price is multiplied by the average distance to the two adjacent strikes to create an area under the outcome curve. The lower the option price (with the same width to the nearest strikes), the less probability of the underlying futures contract’s price ending up in that price range if the slice or section’s area is divided by the sum of all the areas across the range of possible outcomes. The sum of these areas is therefore meant to represent the expected variance of the underlying futures contract’s price.

By annualizing and taking the square root of the variance measurement, a standard, normal volatility number, as generally understood in the marketplace parlance, is produced.

By time-weighting the variances to a target of 30 days (prior to taking the square root) a 30-day expected variance is generated. That 30-day variance is then annualized and square-rooted to produce a 30-day forward-looking volatility estimate for the underlying futures.

Both the live streaming indexes and end-of-day benchmark versions of CVOL utilize this same methodology.

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