It increasingly looks like bond markets are hunkering down for a case of the mondays.  Stocks, German Bunds, oil, and Treasury yields have all moved higher since 10am.  MBS are unsurprisingly at their lows of the morning with Fannie 3.0s down 6 ticks at 101-27. 

This puts a few of the earliest, most aggressive lenders in a position to consider negative reprices, though I'd emphasize that MOST lenders priced AFTER the initial weakness around 9am.