why the large bids all day, page-2

they are called greenmailers ... professional investors who take a big stake in a takeover target and try to force the acquirer to pay more than their first offer. I imagine the buyer is hoping to force Denison to up their offer by something like 20-25c ... say they bgt 10m shares at 115 and Denison ended offering $1.30 then they would make $1.5m in a couple of months !!