This study seems like a good start to predict the market move next week. The study suggests a reasonably strong bullish bias from Thur close. Since we have not moved much, there is still room to grow. ****disclaimer i don't have any affiliation with this blog http://quantifiableedges.blogspot.com/2010/06/two-90-down-days-in-one-week.html "Friday, June 25, 2010 Two 90% Down Days In One Week It was just a little over a week ago that I was examining what occurs after the market posts 2 90% Up Days in a 1-week period. The results appeared quite bullish. Thursday we saw the 2nd 90% down day in the last 3 days. I stretched the requirement out to 1 week and took a look. For the short-term at least, such negative breadth appears to suggest a bounce. "