Quote from MTE:
And how do you define IV mispricings/discrepancies?
There's no single correct IV value, so how would you determine that a particular IV number is "wrong"?
I know there is no way of determining it until after the fact. However, if your model happens to price IV better than the competition (ie. your volatility forecast is more accurate and nearer to the realised volatility), wouldn't you gain an edge over other participants?