There has been what looks like an exit by some medium holders but I don't think this is fatal to HZ, there is a lot of value ot the technology. It's just getting started.
No large holders or team members have left HZ. We just put out a release a couple weeks ago, and 5.0 is on the way, currently on test net.
Good news, Besides price HZ will increase as soon as phase of distribution is finished. Maybe you could release 5.0 until it happens.