It's easy to lose sight of the current sell-off in this morning's shuffle.  There's been a lot of back and forth.  Unfortunately, the highs of the day coincide with lender rate sheet print times and MBS have lost just over a quarter of a point since then.  Lenders who priced near those highs could be considering negative reprices.

MBS are down 3 ticks (.09) on the day and 10yr yields are up 1.6bps at 4.271.