There is a good chance that a broker may be selling to themselves to give the impression that somebody is in the know and getting out or they could be selling down the share price simply to pick off retail clients who are either losing their nerve or stomach for spec stocks. dark pools etc.
in case you did not know it is most definitely not a level playing field.
I cant think of another reason, but I will be snapping up these shares as these sellers (whoever they are) sell them off!
PZC Price at posting:
13.5¢ Sentiment: LT Buy Disclosure: Held