Here are some of the tranches being traded, doesn't look like institutional money http://stocknessmonster.com/stock-trades?S=BIG&E=ASX
Week 28 Wrap: ASX hits all time high; CBA shares' two realities; US inflation hits 3% ahead of China plenum
I88 Infini soars 50% as company reveals it could’ve just made uranium history – redefining what it means to be “high grade”