APT - How High Can It Go?

This stock is unbelievable... is there much downside risk at the current prices?? Every time I think that there is, or that it's due for a correction, APT proves me wrong and goes up another 5-8% in a day.

I’m almost certain that it’s a matter of time before takeover offers come in, but it’s barely scratched the surface of its potential, given that Europe and Asia are virtually untapped markets, whilst AUS and the US are growing exponentially.

So, to put it to the floor... just how high can it realistically go??