Thanks, that's why UVXY does a good job of tracking the minus di on the $SPX, but the $VIX, not so much. This pretty much works on any time frame, but I'm showing it on the one minute as that's the easiest one to see imo http://stockcharts.com/c-sc/sc?s=$SPX&p=1&b=5&g=0&i=p42958591757&a=267391906&r=1337229913710