Ann: Share Purchase Plan Raises $80.4 million, page-9

Which was not a market announcement and likely not very widely spread among retail holders.

While some retail holders have decent holding sizes due to concentrated investments.
I'd expect many would fall into an initial holding size in the $10,000-$20,000 range , in which case a full $15,000 SPP subscription throw's out weightings considerably (if recent Share Price growth hasn't already done so).

Like I said, the current Share Price represent's +13% for tying up capital for ~<2 weeks. Everyone should have got on it whether you intended on keeping the shares or not.