Interesting day today with the general market down again and GSE...

Interesting day today with the general market down again and GSE on the rise from 3.1c to 3.4c with only volume of 395k going through the market, but i noticed for the 1st time a few of the buyers were queue jumping.
After trading the previous day at 3.1c, we had a 500k buyer at 3c lift his bid to 3.3c another 300k bid at 3.5c and then the buyer for 95k at 3.1c lifted his bid above him to get hit at the close at 3.4c. Looked dodgy like someone was privy to information.
Still its a little early to get too excited, but the buy side volume is still increasing to just under 5.7 million and sell side at 2.16 million.
There are several other 500k minimum buys in the queue, does anyone have any information on which brokerage house has these bids?
Im hoping these bids are from the same firm. Anyone else think something is brewing or is it just me and my imagination.