is NYSE Advance/Decline Ratio. According to Marty Zweig, when the ten day moving average of this puppy gets over 2, it's a sign of very strong momentum, and it rarely happens.
<img src="http://www.elitetrader.com/vb/attachment.php?s=&postid=137789"width = 450 height = 345></img>
We got very close in August (1.89), but didn't quite do it.