It is as simple as supply and demand , that's it.

with the other stock you mention, only 1.1m warrants were converted , to me that means nothing. 15 million in trades means alot. Volume .

In PTSC's case there is the two hedge fund type firms, Linclon and Swartz (that's the S&L you read about here) , together they own 9.99% of PTSC stock AND also own millions more of warrants.(they made a small loan to PTSC to keep it going years ago, but now demand , and are receiving , more and 10% of the company for their efforts. The deal is that S&L was put on (what I call ) "mad take over hold" by limiting their interest in the company by 9.99% (must be under 10%) SO, like I stated above, they also were handed million more warrants (the right to buy millions more of shares, at very low cents) What do you do with the warrants, if you can't use them? Well , you can use them by selling the shares they already have so when they convert the warrants they will still be under the 10% cap. The problem was a lot worse but PTSC retired some of them and made the 10% cap a while back. But I saw, what was it ? 8 million more going to Lincoln. Ok, back to your question. Supply and demand, S and L must sell into the market shares the already own so as to gain more shares at very few pennies per share. ( if someone gave you the chance to sell all your PTSC today for 60cents and tomorrow give you the same amount back at 5cents , what would you do? NOW , along comes the big pay off........divy's..........no volume right now because eveyone wants their cash , OH, BTW , did you catch the "qualified warrant holders " get the dividend also ( you know who !) SO , now one is selling so S and L can't sell , when we have a deal PR come out and we are told that money is comming in, then new people like yourself gets drift of PTSC and join in the action. That's when S and L sell all they can, they are very controlled so as not to make a mess of things. (THE PPS CAN"T GO UP NOW because of it) We wait the day that the good ol boys are void of warrants and then gets greedy and holds the rest for dividends and or PPS increase.  All of us are up to our eye balls in PTSC and can't buy more. ( look for buys when divy's come in ) ( but who is selling ?) so don't look for PPS to go up yet.  If you don't know about other funds , the big name investment funds, they can't buy penny stocks, so no institutional buys.......just us believers.

Like Ron says , we are watching the snail races ................

we wait the day of freedom from S and L, and we wait on the Markman ruling ........if somehow the two can come together,and we win the Markman,  then  WOW. look out