Hi,
I watch the house positions to see accumulation and or dumping/ I look for it over a period of time as well. One thing which I talked about was how in the bigger picture ( the month so far) Salman's selling one day looks to be a non event and minimal. You knwo the saying that you can't see the forest for the trees? Let's look at the forest.
As I also stated if you go back and look at July and August you will see that Instinet has bought a substantial amount and it seemed never sold any. Throw in Sept and they continue their same trading pattern. You can see the buy and sell average prices. I like to see who isn't shy about whacking the bids or showing people the new lows?
We will never know who it is, we will never know who wishes to trade anonymously and chooses the ANON button at their houses but its a good way to try and go unnoticed whether as buyer or seller.
I also watch volume, some days are huge and some days are inconsequential. On a good day you may be able to figure what houses the insiders use if you can match the trading witht the insider reports. As you know I watch TA as well. That's another story.
Does this help?