The first report I heard was that the Treasury was taking "suggestions" from the marketplace about REPLACING the 5 and 10 year not Auctions with TIPS ( inlfation adjusted bonds ).
There was also a story that came out about an emergency G7 meeting early next week to discuss whether or not the ECB should ease and allow the Euro to weaken. The G& is "scheduled" to meet in Boca Raton, Florida Feb 6-7th.
Technically, 3.92 was a key chart point in yields on the 10-year.
Couldn't break thru it, and stops got triggered.
If the ECB were to ease and force the Euro to decline, that would make European Bonds look attractive, and could then provide some competition with our US Treasury Bonds.
Treasury Department suggesting that it would issue a 20-Year TIP ( inflation adjusted bond ) would add SUPPLY, since they stopped issuing the 30-year in Auctions.
The market obviously did not like hearing about this possibility.
If the ECB were to ease and force the Euro to decline, that would make European Bonds look attractive, and could then provide some competition with our US Treasury Bonds.
Anyone that felt that there was the potential for a big move in lower rates in bond markets across the Atlantic ( or Pacific ) would obviously want to participate by buying those bonds, as opposed to U.S. Treasuries.