I think the operative word there is "trade".....I don't know IMNP but if there are people actively trading, that is people alternately buying and then selling, then you have liquidity, and given that it trades 4x the daily average volume of RVX it seems that's the case.  If people are content to swing in and out MMs I would suggest are happy, making their juice. 

And that may very well be the problem here.....that people are not content to swing in and out, but rather that they insist on holding tight with an iron grip by and large.  Resverlogix, at least in terms of the PPS, it could be they're a victim of their own success....investors like the story, the potential, and they're not willing to trade, choosing to buy/hold instead. 

We just had an "analyst" price target put out there somewhere around $12 per share.  Why try and swing a stock, scalping for 5 or 10 pts when its being suggested that gains of 1000% or more are possible?