Who's buying RXPC? Pennystock manipulators and gamblers.
The manipulators want to trigger volume alerts for newbies who don't realize that 50 million shares of this zombie is still only $5000 traded.
And if they can get it up to .0002 or higher, they will sell and then short it.
A couple other zombies I track are seeing some volume too. There's money to be made off newbies who are at the stage where they think they see a correlation between volume and PPS rising.
How often have you seen "someone knows something" on a stock message board? and how often has that been correct?