Bonds have been selling fairly steadily throughout the session in an intentional move to the sidelines ahead of higher-than-normal potential volatility over the weekend.  This isn't just about econ data.  The selling started at 8:20am (the CME pit open) and hasn't correlated with news headlines or other events in a timely way.

10yr yields are now up 8bps on the day at 4.443 and MBS are down nearly 3/8ths of a point.  Many lenders are seeing well over an eighth of a point of weakness since morning rate sheets.  As such, negative reprices are an ongoing possibility.