Mortgage rates are always in flux, changing daily, and even hourly, depending on market conditions. According to a study from The Mortgage Reports and MBSQuoteLine, rates tend to fluctuate the most on Wednesdays and Fridays, varying as much as 24 basis points (0.24). They’re steadiest on Mondays. These movements can pose a challenge if you’re in the process of buying a house. For example, you might apply for a mortgage, get quoted a 6.5% rate, and then, by the time you find your house, rates have jumped ...