Total volume in 24 hours on that exchange is more or less 30BTC... And that includes every coins.
Ok, fine, it's not polo (yet) but that's a start
Was also thinking who is that and why should we care
Because it's good to be on multiple exchanges and HitBTC is a good exchange!
Polo always said that Waves will be on soon after mainnet nodes are released - judging from the activity I would guess this will be sooner rather than later.