RE:RE:More News ......Jan My experience is industry insiders and big investors typically have a good idea of who invests with which shop so if they see large sells with one shop, they start asking around to see who is selling.
I've seen it mostly when investors sell Private Placement shares after the lockup, but they don't want management to see them do it (because of a close relationship).
I'm sure there are lots of other reasons, maybe some platforms default to Anonymous?