$500,000 First Year Sale Ann, page-25

Bots playing ping pong
This activity should be reported to ASIC by as many sharholders as possible.
To rule out 2/3 bots constantly buying and selling to each other to force shareprice down. I would expect a change in holding notice to have been lodged if its not.


Beyond the Usual Trading Algorithms

There are a few special classes of algorithms that attempt to identify “happenings” on the other side. These “sniffing algorithms”—used, for example, by a sell-side market maker—have the built-in intelligence to identify the existence of any algorithms on the buy side of a large order. Such detection through algorithms will help the market maker identify large order opportunities and enable them to benefit by filling the orders at a higher price. This is sometimes identified as high-tech front-running.