So far DRK has gone up and down around release events and news events.

Up on release of event, down soon after.  When there is no event, the price slides.

After RC4, code audit and surviving assault after assault from competitors trying to break the anonymity, the big players and those who seek anonymity for all manner of reasons will move in and buy up as much DRK as they can. Only then will the price free float according to real market forces and not traders moving around from coin to coin looking to make some quick and easy cash.