The example the ATO gives on the examples page of your first link, suggests that Molly is conducting a business even though she's only doing 35 purchases and 25 sales, using a $150,000, and holds onto the shares for a massive 12 weeks. (She sounds more like an investor to me)
Perhaps the only thing is that this example is dated from 2001, so perhaps the ATO view has changed. Sure wish they would clear this up with definitive rules.
