To clarify, I agree that TPL probably isn't interested in owning more shares of PTSC. If anything, they'd probably sell some off to support their other endeavors. As for "TPL is not limited", I disagree with that comment by someone else. They are only limited via reporting requirements. Anyone can own as much PTSC as they want, it's just that after they exceed certain thresholds, they have to henceforth report any planned manuevers in advance (per my understanding).

SGE