Anyone have a formula or know which website cal the vix for otm option
If you are really referring to the calculated VIX index, of the many options included, only 4 ATM options are included (one PUT/CALL pair for <30days and one PUT/CALL pair for >=30 days). Is is unclear why you desire to remove these from your data! You can purchase the raw data from CBOE LiveVol. Other providers are also avail, depending on how deep a history you require.Not exactly try to get historical data of otm option volaility Similar to vix but on otm options The vix includes atm