I suspect possibly done through independent companies (a separate legal entity for legal purposes) with a slightly differing shareholder set up on each?
Also probably registered in offshore tax havens for obscurity.
Not hard to imagine criminal organizations (mafia type) having 30 companies registered in Belize/Lichtenstein etc and churning between any number of them for money laundering and profit from pump and dump operations. In time they might abandon other forms of crime and focus purely on the stock market given the free reign the ASX and ASIC give them.
You can be sure these organizations will also have members posting on these forums to ramp the stocks in question.
