Hi all, (NOTE - when I say $VIX, I mean the CBOE S&P500 Volatility Index. When I say $SPX I mean the S&P 500 index itself. I am NOT talking about any ETFs or ETNs) On the surface, $VIX is the volatility of $SPX, right? BUT, is this to say that a rise/fall in the $VIX would automatically mean a similar increase/decrease in the Vega of all $SPX options? I hope I made the question clear enough, I need a solid answer from someone with deep understanding of the subject. thanks in advance!