Another thing to note, something that I rarely used to pay attention to in a stable interest rate environment, is the rho...(or the interest rate factor) in the Black-Scholes formula...The first time I really noticed this recently was when I saw that the futures for the SP index were trading at only a 2 pt premium to the cash contract for an expiration that is close to 3 months away. When you consider that the futures premium 2 years ago when short term instruments had a yield of 6+%, was somewhere in the vicinity of the high teens for the same duration, you can sense how much this interest rate factor discounts the present value...The options are reacting much the same...There used to be a high premium on the call side of any combination strategy due to the cost of carry, I imagine...By no means, am I an expert on any of this stuff, but I have observed these phenomenon...perhaps someone with a better handle on the exact math could clarify...
But I do imagine that somehow, somewhere in the mix, this low interest rate component has had some effect on this VIX index...Considering the uncertainty of the environment we are currently in and the longer term bear market trend, it would seem unreasonable that the VIX would trade this low if not for the fact that Greenspan cut interest rates 11 times in one year and effectively brought real rates below 0...