Fannie Mae-No Politics (FNMA)

[Sogo]

How do we know the hedge funds into fnma are long? Couldn't they just be holding until a future moderately sized bump in pps? Question is- how long are they? Months? Years? Weeks?
Also - is there some source that shows how long they are? I haven't seen anything like that yet. Granted, it would make sense that they would be long with a target of months or years, but I haven't really seen any "proof" of that. The lawsuits would suggest a longer target date, but maybe they only filed those to get a temporary boost in good publicity for the pps. I'm just throwing questions out there. Any real "proof" that the hedge funds are long term into fnma?