Almost every lender under the sun is looking at the same price levels seen when they first put out rate sheets this morning.  As such, there is essentially no risk for most lenders.  

Other lenders (one or two) who repriced positively earlier may be considering pulling back the gains passed along in those reprices.  

Fannie 3.5s are down 3 ticks on the day and 4/32nds (.125) from the highs of the day.  10yr yields are up to 2.165 from afternoon lows of 2.152.