I read with great interest Acrary's posts regarding the collapse in daily ranges and in daily follow-through in the S&P market. After running a quick test, I agree that things have fallen off recently, but in historical context things aren't particular bad. Attached are two charts. The first is a 40 day average of daily follow-through (ie measure of how much the daily price expands the previous day's range) converted to a 0-100 oscillator. The second chart is a 40 day average of the daily range as a percentage of the price at the time. The follow-through is a little lower than its historical long term average, while the daily range is still considerably higher than anything we've had prior to the late nineties. While I will be the first to concede that these aren't the only measures of trading difficulties, by these two measures things arent particularly bad. -blueberrycake Here's the follow-through chart.