Heads up!  Here's where we fall out of the range!

IF and only if lenders have given you ridiculously awesome reprices relatively recently is there any major risk of reprice for the worse.

5.0's are at 101-27 up 8 ticks on the day and 4.5's are up 10 ticks at 99-29.

Perhaps even more important to watch would be the 3.64 level on the 10 yr tsy as that has been a major ceiling for today.  Stay tuned, and remember if you're waiting for a blog, you can always get an idea of what MBS are doing on the following page:

MBS QUOTES

which is always timestamped with the last update.