Cboe 3-Month Volatility Index (VIX3M)
The Cboe 3-Month Volatility IndexSM (VIX3M) is designed to be a constant measure of 3-month implied volatility of the S&P 500® (SPX) Index options. (On September 18, 2017 the ticker symbol for the Cboe 3-Month Volatility Index was changed from “VXV” to “VIX3M”).
The VIX3M Index has tended to be less volatile than the Cboe Volatility Index® (VIX®), which measures one-month implied volatility. Using the VIX3M and VIX indexes together provides useful insight into the term structure of S&P 500 (SPX) option implied volatility.