with the low number of shares changed in the last months and the legal guidelines/limits when and how much shares a company is allowed and able to buy the volume of sold and bought shares ought to be five to ten times higher than today - otherwise PTSC is not able to reach the 100mio shares target.
Maybe someone knows how much shares have changed hands in 2012 - I suppose it's not more than 100mio shares throughout 2012 so far...

GLTA