Quote from sle:
Actually, a relatively simple back-test will show you that straddles for high beta, high vol stocks are a better buy then straddles on low-beta low-vol stocks, if traded in beta-neutral ratio. In general, the lower the vol, the higher is the proportional risk premium.
trade in beta neutral ratio..... how does one beta neutralize a straddle in a high vol high beta stock.. beta being a weighting of vol of ssingle name against index... thats buying vol in single name.. you offset this by selling vol in index via a ratio formed out of the beta.. ?
as it is the result of the standard options pricing method/model