Volatility - Nasdaq 100:S&P
I borrowed this chart from Bill at Vix and More, but the relationship sits at an important juncture. After Tuesday's sell off the relationship in volatility between the Nasdaq 100 and S&P looks set to change with a new downswing in the S&P favoured.
At one level the VIX may have already broken resistance which may see a break of closing support for the S&P today:

Dr. Declan Fallon, Senior Market Technician, Zignals.com the free stock alerts, market alerts and stock charts website
At one level the VIX may have already broken resistance which may see a break of closing support for the S&P today:
Dr. Declan Fallon, Senior Market Technician, Zignals.com the free stock alerts, market alerts and stock charts website