hoot,if you watch the uvol/dvol comparison chart ,there are only 4 types,a trenday,those are the 10% of the time to watch for,a back and forth where they intertwine and change leads, a reversal ,and then just a grind up or down where one leads most of the day but the ratio 3/2 or 5/3 doesn't vary much all day.this will give you a clue on how to trade it,expecting nice extensions up or down or being happy with meager new highs or lows and cover there ,expecting it to be well under control ... the chart is feb 1...a trendday up where the dvol flat lined all day