The chart below measures the percentage of high relative strength stocks that are trading above their 50-day moving average (universe of mid and large cap stocks.) As of 2/9/10.
The 10-day moving average of this indicator is 35% and the one-day reading is 31%. This indicator reached a single-day low of 23% on 2/8/10. Dips in this indicator have often been good opportunities to add to relative strength strategies.