Nocona, Not sure if there is something for the ndx 100, but you might want to ask the person who maintains the website. I just sent the link because I thought it could be used as another indicator when you are deciding to buy the rydex bullish and bearish funds.
Hi Nocona here is the symbol catalog for stockcharts.com. http://stockcharts.com/charts/catalog/09.html Under N they have several charts for Naz100, http://stockcharts.com/charts/catalog/Na.html you can do a search on that page for volatility. I got four, one was $QQV Volatility Index - Nasdaq 100 Trust. That may be what you want. But look at all the other Naz100 charts also.