computer play by accumalator for b.

Notice how the stock does a trade and the computer does a trade at exactly split second later at the same percentage which is 8%
This is how you accumalate your stock that you have placed in various positions down the screen.
The traders, not so bright ones think wow it is going down and they sell in to it.
Mr B wins again and soaked up more stock.
They pay up when there is a large sell order in the screen to get them. They repeat the sell down scenario again and so on & pay up again once a nice lump is there( not theirs of course ). They are also selling down to them selves to put the "fear" into traders to shake out the sellers.

This will bounce when the buy positions have other buyers whom become competitors for the stock.

In the not so far future most of this "loose stock" will be gone and then we will see a completely different picture.