A professional investor does not need such a service, since in most cases he is able (and should!) do all that stuff in-house, or doing it already. If he does not (counting on recommendations of this or that 3rd party) - then he is not yet a professional investor. Professional investors do need sources - zone files, dictionaries, this sort of things. Those who are not yet set in this aspect may possibly find useful a service selling access to sources (not analytics, not recommendations!)