RE: literally playing with oneself lolwow..its pretty obvious why they would be doing this. And not just 001, but all the other institutions (079,099,002,etc.. trading amongst themselves)..
To increase volume! or make it look like there is some volume in the stock..
but main question is why would they wanna do that??? If they aren't going to let the SP run free than why control the volume? There has to be some logic behind it. (i just had a nice fat lunch so brains kinda hibernating temporarly :)..