MBS Near Price Highs of the Day. Reprices for the Better Possible By: • Mon, Apr 12 2010, 12:05 PM "Rate sheet influential" MBS coupons are just off their price highs of the day. The FN 4.5 is currently +0-07 at 99-29 yielding 4.518%. Lenders who baked in a few extra bps this morning should be preparing to republish rate sheets for the better.