They bought at 0.5c they can sell all the way down to 0.6c and walk away with a tidy profit. Probably make $500k+ from a weeks investment. Instos don't need to make big profits, exiting a position and rolling the money into the next play as fast as possible is the aim of the game. If you're making 10-20% every couple of weeks that's an insane rate of return across a year.