Quote from momoneythansens:
You mean flat skew? Can't do that either. All Strip vols can be shifted up or down but only together. EDIT: Current market skew is used in the model.
Quote from kapil:
This butterfly looks like a nice complement to the creditspreads. If the markets go nowhere, the butterfly has a manageable loss but the creditspreads payoff.
Quote from cohenmichaela:
I was thinking along similar lines with barriers...