Ann: AVZ Minerals hits 284.47m @ 1.52% Li2O, page-249

The broker report only shows volumes via each stockbrokers, not showing any underlying holders.

UBS net buy volume on AVZ, was mainly from Rare Earth ETF.
I don't think UBS volume on PLS was from Rare Earth ETF as the Rare Earth ETF bought PLS a while ago, but they bought AVZ at around 30c just in March 2018.

Here's the change on the top 20 shareholders between 15 - 31 May 2018:

Citi, added 3m
HSBC, reduced 1m
JP Morgan, added 3m
BNP, added 5m

Three substantial holders exited
- Gilinfinity PL
- Gasson Mark
- Reeves Shane