Bluecollardollar is correct in my opinion. As for GlassHalfFull's comment, "So the market was not right the few days before the PO?", I would say yes to that. The PO event put the market thinking behind and it had to correct down to that event. That's what markets do: they correct up or down al the time.

To me, the market usually speculates on the direction of what an event or series of events might do to a stock; so the market is always speculating on the next event or events. It can only zero-in on a realistic value when a multiple target is placed earnings and actual earnings is met, then it is back to speculating on the next event or events (trend). So the market got ahead of itself on POET and the market can also get behind on POET as well. 

Monolithic