I have seen a run to the low to mid twenties a few times at...

I have seen a run to the low to mid twenties a few times at which time the volume falls, and the heavy selling begins whereby it falls back down to where it started.

I ended up selling the other day at heavy loss (held pre March Tsunami - lucky me) as better opportunities out there IMO. Keen to see how far it runs though - kicking myself a little for not holding on a few more days!