Today's total turnover was trivial amount, so I don't think there is any concerted effort behind the buying. Rather, just a computer program acting under orders to make the most of scooping the few speculators who previously entered the fray. Probably imagining fortune would be in their lap within a week.
Whilst the intra day trend looks to be up, the algorithm driving the buying "allows/makes" the close look poor. Thus triggering speculators exits for the next day. And so it goes. Wealth by stealth, as they say at the ASX
Read up, a human has no hope sparring with a robot