December 27th, 2007, 2:07 pm
As daveangel mentioned this is all about flight-to-quality, primarily...As to why the two-year note, there are many reasons, including the shape of the curve driven by the expectations of the Fed; the activity of the money-mkt funds in both cash and repo mkts; the term structure of the FF/Libor spread, etc. etc. It's too long and boring to enumerate.