Well as of today's H.4.1 update, the outflow has increased by yet another $8 billion to a new all time record of $85 billion, in 6 consecutive weeks, which is also tied for the longest consecutive period of outflows from the Fed's Custody account ever. This week's sale brings the total notional of Treasurys in the Custody account to just $2.66 trillion (down from a record $2.75 trillion) and the same as April of last year. And since the sellers are countries who have traditionally constantly recycled their trade surplus into US paper, this is quite a distrubing development.

Via: http://www.zerohedge.com/news/foreigners-sell-record-85-billion-treasurys-6-consecutive-weeks-time-get-concerned

Smart men started to talk about "last bubble" in US treasures. As their price rise have no meaningful foundation. IF you look back at this blog entries, you'll find that it is not only bubble by itself, it, upon bursting, will trigger chain reaction.