lots of people who own EZCH own NVDQ as well(from the same 2 stock sights Gilder and Domino) and they are selling NVDQ to protect from margin calls as EZCH is down more than 20% today.
I'm Member of both and me and others who are heavy in ezch are in nvdq as well. a lot of members have high margin% with ezch and nvdq is not marginable at most houses