ISX Charts, page-3090

Good question. This point is interesting:

Ownership in PPF providers is governed by
the FSSA. The FSSA limits shareholdings of an
individual shareholder or a group of associated
shareholders in a PPF provider, whether held
directly or through another entity or entities, to
15 per cent of the PPF provider’s voting shares.
The Treasurer, or in some cases APRA under
delegated authority from the Treasurer, may
approve a higher shareholding limit for specific
institutions on national interest grounds.