In what cases do they do this thing? If I make big enough trade volume at exchange, say $50,000 for year, is this information transferred as well? I suppose it happens only if you do margin trading or something... don't know much about it, except that you take loans from brokers...
Yeah I realize $50k is not big for you
Exchanges companies are no decentralized companies. They are all have rules together like the other companies. Sharing your information to the other credited comapanies was a factor of security handling to prevent issues before hand. Althogh it sounds like you are being watched by many people. Those credited organization was pretty sure that are in terms or connected to the company you used to exchanged, it could be that they as well already did transfer your data of transaction.