Quote from Gravestone Doji:
I have to disagree. That's what the floor traders are hoping you believe. But if that were really true, then you could make a bundle because the top and bottom IV's would be ripe for attack if they indeed offered "<i>very little predictive-power </i>" My point is it seems to make more sense to believe that a top decile IV is a good indicator the underlying is unstable and future volatility is in the offing. Thus it may <i>not</i> be a good time to sell options, like the books and guru's say.
That's what makes a market. Vic sold deep otm insurance in SP puts when atm vols were idling at 10%. That ended very poorly. Do your bottom decile vols hold true to your "predictive" argument? Or does it only hold true for the top decile vols?
Absolute vols are essentially meaningless. The path of vol is all that's important, as IluvVol suggested.
I suggest you return those books for a refund.
