Let's get this into perspective EO I have the same broker data...

Let's get this into perspective EO I have the same broker data and for the period 13/5 to 12/8. But lets look at the data to last Friday the 21/8.
The important figure is the net holdings of which BY hold 4.8M over the period avg buy 056 sell 067.
But BY are only the 2nd largest buyer for the period. The largest is Bell Direct with net 7.2M avg buy 063 sell 056. So there's a new player in the game.
Your question who is selling? The answer is Comsec, Etrade and Aust. Investment exchange 8M.

So your point is?