Real investors imo wont pump and tell others when they are buying. The only pump after they bought and sell into the pump. Why do the opposite? They are not there to make money for me they are there to make money for themselves. but i dont believe that there is a group anyways.
Seriuosly, if you were going to buy a lot of shares, why would you announce it to everyone. Personnally, I would like to get my shares at the cheapest price possible. He's was dumping why others were buying.