I only discovered the company recently. It seems that there are days when there is very little volume and those days are when the price dip below about 8.8c. This seems to be a floor. There is some shorting - https://www.shortman.com.au/stock?q=d13. Today about 25% of the trades are reasonable quantities (>10,000 shares) and 25% are most probably shorts (<100 shares). To me the key is either put in some low buys to mop up anybody falling for the shorting effect. If you want to sell don't put the order in at market - always set your price.
D13 Price at posting:
8.7¢ Sentiment: Buy Disclosure: Held