We know that Fidelity is one holder "hiding" behind the HSBC...

We know that Fidelity is one holder "hiding" behind the HSBC Custody Nominees.

HSBC Custody has added another 400k since the last figure I found which was dated 28/02/18.
Not as good as the 2 mio they bought in the month of February alone (and even I'm January they added about 500k), but I suppose the volume hasn't really allowed for another 2 mio move.

Can't tell yet if it's them or another HSBC holder, but I'll keep checking. If it was, then they'd be sitting at around 3.5% now.