Adjusted cost base = zeroHaven't bought any PTQ or PHM since the spin out in December 2017. For tax purposes the spinout was deemed as a sale of an old PHM share at $0.33 and the acquistion of a new PHM shares for zero dollars and the acquistion of 1/10 of a VMD share for $3.30.
For you in the same situation it does not pay to trade PTQ without triggering a huge cap gain tax.