Say for instance u bought up 1.5M shares today and the stock was closing up 15%. All u have to do, is sell 120K of the 1.5M, just spanking the bid into the close to close it nice and red and allow yourself another morning of picking up some shares.
yes you lose some shares, or sell some for a tiny loss, but in the grand scheme of things, when you are accumulating a big position, this is all part of the job. Or else ur buying it up and up and up and paying way more. Need to sell some off to keep the price relatively low.
Pisses me off, but in the end u generally want these groups in.