CHICAGO, July 30, 2021 /PRNewswire/ — Cboe Global Markets, Inc. (Cboe: CBOE), a leading provider of global market infrastructure and tradable products, today announced that the company recently discovered instances where the spot Cboe Volatility Index® (VIX® Index) calculation differs from the calculation described in the VIX White Paper, which details the formula used for deriving values related to the VIX.

The spot VIX Index is disseminated in 15 second intervals and is not a tradable product. In certain instances, an index level was not produced at the applicable interval, resulting in the dissemination of the prior index value. Cboe is investigating the degree of impact and the number of instances with respect to which the redissemination occurred. Based on the company’s initial assessment, Cboe believes that, in the vast majority of cases, the current VIX Index calculation yielded the same result as provided in the VIX…

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