Mortgage rates were unchanged in some cases today and higher in others.  The discrepancy is a result of the timing of today's market movements.  The most important thing to know is that lenders who are unchanged today will almost certainly be higher tomorrow, unless the bond market stages an impressive comeback between now and tomorrow morning.

Lenders have the final say in the mortgage rates they make available to borrowers, but their decisions are informed primarily by the bond market.  Weaker bonds = higher rates, and vice versa.  Bonds weakened today--modestly at first, then significantly in the afternoon--but it didn't happen quickly enough for every lender to see the reason to change their mortgage rate offerings in the middle of the day. As such, those lenders will simply be accounting for the bond market weakness in tomorrow morning's mortgage rate sheets.

In the bigger picture, the past few days of weakness are complicated.  On the one hand, there is an argument to overlook them due to the idiosyncratic nature of holiday season trading.  On the other hand, bonds have had 2 stellar months, and some of the movement we're seeing suggests they may be running into their first major correction against those 2 months of strength.  In other words, rates have moved lower very nicely for 2 months and they're now threatening to bounce.