RE: Lynparza17 May 2022 11:10
I don't know filter, I don't have much experience of it so trying to figure out from what I can see.
Typically what seems to happen is that the MM's all come on board in the morning, say at 0.85 bid and 0.95 ask. So if you try and buy you will get quoted something like 0.94 or thereabouts.
Then we see an unnamed party come onto the ask below the MM's at 0.92. So if you then try and buy you will be quoted below this figure, say 0.91.
Often if this is not taken up, that party will disappear then come back lower 0.91 and so on, pushing it lower and lower whilst the MM's stay at the same original level.
When these unnamed parties trades are closed up they show as 'A' trades and the price shown on screen here shifts, so often if it goes through at say 0.91 the quoted shareprice will drop to show that level, even though the MM's haven't budged.
This all lowers the VWAP.
Since the 1st Feb there has been 40.8m shares traded as 'A' trades.