we've dropped 4/32nds in the past 3 minutes. Potential reprices for the worse from lenders that set pricing early. Not a certainty or even a strong probability at this point unless these levels fail to rally.
Keep in mind that this will cause many lenders to hedge their pricing a bit more for the first rate sheet of the morning. Make sure you are evaluating the day over day difference in MBS versus the day over day difference in YSP / discount cost. If it seems like your pricing is ahead of the curve, those are the times to consider locking.