Bullish Sign? - Bounced off 200 EMA, page-2094

Going on what pbawley said the other day about our major holders not being dividend-oriented funds and what ahpla suggested upthread about this volume possibly being transfer from from one fund to another I’m putting my money each way ....
ie both the buyer and the seller know.
And because of them seeming so confident I just sold all my CBA shares and bought more NWH .........
..and something strange just happened to the last tranche of them ..I think because it was a high trade of 5,500 shares! (well possibly not all that high to a lot of people)
ie the order ($1.71) said it was processing then it just disappeared. I have the confirmation email but that’s it.
It’s never happened before so I suppose it got snaffled up accidentally by purchasing fund?. At the time of order the bid was $1.715 and the offer $1.72
Anyway ...
My guess is we’ll get a substantial holder notice from a fund that likes dividends as well as capital growth either today or tomorrow?
If 9 million got collected already I reckon that’s close to 1.5% of the company. (But as most people here know to always beware of my maths) ...
If the purchaser was already here but floating around somewhere under the 5% plimsoll line they must be getting close to surfacing ?

Only thing is, can these S3XT s be ‘dark pool’ as well as simple transfers from one fund to another ?