Worden has an indicator called T2108 which plots the percentage of stocks above their 40-day moving averages. In effect it works as an overbought/oversold indicator for the market. This is an indicator that Duru and I like to check when we get strong moves in the market. I was just instant messaging with him about it and we were trippin’ off of how fast this bad boy is dropping. This indicator doesn’t spend much time above 80 or below 20. Once those levels are hit the market usually reverses pretty quickly. It hit 19.99 today… down 26% from yesterday. The chart shows just how widespread the selling is right now:

Update: To fulfill a request left in the comments below, here’s another look at T2108 with data going back to late 2000, which is all the data I can get on the chart: