Bonds were holding fairly flat this morning, but began to sell a bit just after 10:35am. MBS are now down 1 tick (.03) on the day and 6 ticks (.19) from the AM highs.  Most lenders didn't price that early in the day, but some are seeing an eighth of a point of weakness, which would be considered the bleeding edge of negative reprice risk for the jumpiest lenders.

10yr yields are still down 1.1bps on the day at 4.529.