Their specfication

Ticker ATOM

Algo Scrypt

PoW/PoS

POW Time blocks: 60 sec.

POW Block reward: 600

Total POW coins : 6,600,000

POS: 100% Yearly Interest.

Total coins After POS End: 252,000,000

PoS: 100% Interest. ( Approx: 0.27% EveryDay )

Min.Coin age: 8 hours

Max age: unlimited

100% interest per year sound really high which will double total supply of this coin every year so if there will be no demand for it in future, you may actually loss.

Looking at

https://yobit.io/en/trade/ATOM/BTC Daily Trading volume for this one is only 0.20

BTC which is really low so don't invest much because you may struggle to sell them later on.