Well, if he hasn't been buying and selling (I suppose we would know about selling, too), then he's probably accumulated pretty much all he wants. On the other hand, as some have noted, his fund is so heavily weighted toward POET, that he's past the point of no return.
It's all pretty darn interesting and dramatic. Could there be a leak on the progress, direction and conclusion of P2 or any other material, anticipated event? That would be playing with a huge amount of fire by the Company, so I'm thiinking not.