No membership. I use the free service. I do like the consolidation of institutional holders. It makes it easy to keep track of them (and who they are).
For the most part, I don't track institutional holdings. They tend to hold stock, unless there is something wrong with the company.
With GNUS, institutional holders are/were growing, which could have reduced the effective float for retail shareholders. I think this dip in holdings is only significant if others sell, too.
You should read today's 8K filing, if you haven't.