NOTE: If you're looking at a rate sheet that came out after 8:45am, and especially if you're seeing bond market weakness priced-in to that rate sheet, it's highly unlikely that the lender in question will reprice for the worse. It would take several more ticks of weakness for the average lender to be affected.

The earliest few lenders have had a chance to see enough weakness to consider repricing.  Fannie 3.5 MBS (relevant for any rate sheet showing rates below 4.25%) are down 6 ticks (0.19) from the earliest possible rate sheet print times.  Fannie 4.0 MBS are down an eighth of a point from the same time.

10yr yields are pushing the highs of the day up 2.7bps at 2.713%.  

The most recent weakness followed the 9:30am NYSE open as stocks surged out of the gate.  A ramp up in corporate bond issuance is also adding pressure.