Quote from ktrader:
First, you can certainly simulate trading volatility as measured by the VIX using S&P options. Read the cboe whitepaper on how the vix is calculated and you will understand why you can do this...VIX is derived from a strip of S&P options.
Yes, you do have time decay to worry about but depending on your strategy and forecast for future volatility that time decay could also work in your favor.
mte..you may not consider time decay a factor in certain futures contracts but you have to factor in the premium or discount the contract is trading at compared to the spot. The AUG VBI is trading at a pretty decent premium right now, which creates potential trading opportunites.
I traded the VBI's quite a bit and routinely get filled inside the spread.