I'd have to suggest that MUFG/MS could just be looking to profit on the A$0.07-A$0.09 market-delta, when you consider the 'man-hours' and 'capital' requirements being invested, they'd stand to make ~A$1.4m (assuming ~21m shares * $0.07), it's entirely 'plausible' that they may just be locking-in some 'easy-money' for the FY18...
Personally, I still think something 'more significant' is at play...
Patience, patience, time will tell...
ML
VLA Price at posting:
$1.68 Sentiment: Hold Disclosure: Held