Why should anyone care about this? Biggest volume in 4 months? Whoopdy-do. And the actual traded amount was 14M shares, or barely $200k total. I think it's silly of the ASX to flag and stop this. People do buy into things big time without announcements. All it takes is one person with some money to have done their research and come to the conclusion that anything under 1.6c was a bargain, and just bought up.
PIO Price at posting:
1.5¢ Sentiment: Buy Disclosure: Held