The 30-year fixed mortgage rates rose for the second week in a row to an average of 4.37% with an average 0.7 point from 4.35% last week.

This places the no-point rate at about 4.55%. Mortgage application activity appears sensitive to rate levels as the Refinance Index backed up further in the week ending Sept. 10. It declined nearly 11% to 4395. Since hitting a peak of 5085 at the end of August, the Refinance Index is down 13.6%.

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