Where PEB sp settles at over the course of this week will depend totally on how well PEB & the joint managers have allotted the $80m shares.
If they have done a good job like Serko (the one I own & follow most closely), we should see good volumes transacted as the flippers sell out to the committed long term holders - provided the allotment of shares was skewed hugely towards the latter. The latter will be happy to buy more on market because any price increase above the placement price immediately improves the returns on their underlying position.