Given T + 2, I doubt they are buying for Friday's resolution. Given the ATO has not issued the ruling yet, it would be brave to be buying for a potential buyback for the return offered. Not sure of the motives, but if it is there tomorrow maybe there is another reason that $500 k plus buy was/is there. Interesting and I have no idea who it is and what they are doing, but wish I did.
Cheers