Mortgage ratesÂ rose slightlyÂ again today, despite moderate improvement in underlying bond markets. Â Typically, bond market improvement corresponds to lower rates. Â Today was an exception because of the timing of recent volatility. Â Friday afternoon saw a sharp deterioration in bond markets (implies rates moving higher), but for many lenders, it was too late in the day to reissue rate sheets. Â Those lenders had to wait until this morning to adjust rates higher to account for the bond market movement. Â In simpler terms, today's higher rates are merely a delayed reaction to Friday's bond market weakness.