Hi Vincent,
At that point of time no one will know that the share price will plunged to $0.05. Since, we can;t predict the future, the only sensible way is to segregate the cash. For instance, you have $100,000 and you plan to invest 10% of your fund into Osim which work out to be $10,000. When Osim start plunging you may want to invest 20% of $10,000 which work out to be $2000. Hence, if the share price continue to plunged, for every 10% plunged from the previous purchase price you will invest another $2000 to average down.
