Don't know what is happening at this moment. Most of defi project lost their value incredibly. Especially for dia data, the recently successful defi token, launched IEO a months ago. Then it was start increasing incredibly, ATH around at $5.13 Sep 02, 2020 (3 days ago) but its only $2.09 today Sep 05, 2020. Just decrease more than half of its value within 48hours when it added binance exchange mainwhile
It is $1.35 now. So I guess lost even more value almost halved from the moment you wrote this post. I do hope you sold it. IF not then think if price is low now so you can buy more and lower your average buy price.
From that certain point, you needed to assess if you are still looking for positive marks coming from this project or you needed to move forward and find other coins around, this certain dropped needs to reassess.
There's still chances that it may go for more or it will begin to regained the run and bring much better price. It's up to your judgement whether to buy for more or to quit and invest your money to other projects.