While benchmark interest rates continue to chop around in a contained range, mortgage-backed securities have moved sideways, failing to make much progress in either direction. Although we have experience a few moments of added volatility, tight trading ranges have kept and generally "topped out" MBS prices have kept mortgage rates stable all week, near six month lows. As previously stated, MBS prices are hitting a ceiling, unable to make enough progress to push mortgage rates any lower. Therefore, if you are still floating, it is time to take advantage of the aggressive rates lenders are currently offering. Eventhough there is room for benchmark Treasury yields to move lower heading into year end, we do not expect MBS prices to benefit from continued gains as the recent strong performance of mortgages has many investors thinking about profit taking....