Current SP, page-1917

it's often hard to tell just what the strategy is but some points of note:
1. only an insto/broker with a financial services licence that is connected directly to the ASX can do those type of trades
2. once again, as for almost the last week, for yesterday there where no short sales reported to the ASX for QBL
3. it may be an accumulation strategy where the seller bot is trying to trigger bigger sells into that line where a much bigger buy order may be placed, or it can be a form of volume and resistance testing to then figure out all sorts of other stuff

all this just imo...cheers