Pre open there was a seller for more than 500k shares at 59 c...

Pre open there was a seller for more than 500k shares at 59 c ...and open time most of them got snapped up ...one trade at 250000 shares ...easy peasy!!! Surely there is a major holder offloading some shares that they picked up in the recent placement at 10c ..a 500% increase in few weeks not bad at all...but what surprises me is the staedy lapping up by the buyers ...is it quiet accumulation going on?.....thoughts anyone?? rgds