I could be wrong, my understanding is that it's a sentiments indicator for the future direction, not for what's happening today.
发表于 2012-2-16 10:50 AM
http://www.bloomberg.com/quote/SPVXSTR:IND
The S&P 500 VIX Futures Index Series measures the return from a daily rolling long position in the VIX futures contracts traded on the CBOE. The short-term index is comprised of the first and second contract months and the mid-term index is comprised of the fourth through seventh contract months.