We don't post updates to let you know when MBS are improving--only when there's negative reprice risk. 

As such, this alert needs some context, because there was a nice recovery in mid-day hours that got MBS all the way back into positive territory. If you DID NOT see a positive reprice today, you're at no risk of a negative reprice now (as long as your lender is remotely logical).

What's important is that MBS are now down just over an eighth of a point from the mid-day highs.  Lenders who repriced for the better during those highs are now at some risk of considering reprices. At present, it would only be the jumpier lenders.  Either way, if you were planning on locking today and have already seen a reprice for the better, there's no reason to wait.