Trend traders and day traders get out on Fridays. They don't want to hold over the weekend. PTSC is not above that. It's not MMs trying to manipulate the share price. The MM bogeyman is always blamed when share price goes down but never when it goes up. MMs are insitutitions that make money on every trade, they won't waste time trying to manipulate PTSC.

Look at a chart for CPTC. It had a similar run this week (on higher dollar volume) and traders are getting out for the weekend.

They might be done after lunch and PTSC might get some legs. Or it might not. But to think that Nite or ARCA or whoever are focusing their efforts on PTSC, when it trades well under 20 million shares mind you, is silly. At most, their computer algorithm is playing the spread.