Welcome to the slowest day of the year for bond markets.  While markets are technically "open" until 2pm Eastern, that only means that the 2 or 3 people who are actually working may trade a bond or two in order to pass the time.  OK, it's not quite THAT bad, but it's close.

There is no significant economic data on tap and no significant scheduled events.  Market participants aren't waiting for any specific news today, and even if big news were to come out, no one is around to trade it.

To clarify, when we're talking about "no one" being around, it's in relative terms.  Trades happen and markets move, even on the slowest day of the year, but the results mean nothing in the big picture.  If bonds gain or lose ground today, that might or might not end up being a move that creates momentum heading into Monday.  In the case of gains, lenders are typically not eager to pass much of it along on rate sheets.