You want variance strike to be higher if the business day year fraction is lower then the calendar day year fraction. So, you want to divide variance by the business day year fraction and multiply by the calendar day year fraction:Quote from kapw7:
You use the formula: =C40/SQRT((D40*365)/((B40-A40)*252))
whereC40 is VIX, D40 is business days and B40-A40 the difference in calendar days. Not sure if it is the other way round? D40*252 etc
x = [BD/ 252] / [CD/ 365] = [BD * 365] / [CD * 252]
var = vix / sqrt(x)
makes sense?