A second week of declining interest rates prompted another increase in mortgage activity last week, the third in as many weeks. The Mortgage Bankers Association (MBA) said its Market Composite Index, a measure of mortgage loan application volume, gained 3.0 percent on both a seasonally adjusted and unadjusted basis.  The Refinance Index was 5 percent higher than the week ended March 10 but was down by 68 percent from the same week in 2022. Refinancing accounted for 28.6 percent of applications, up from 28.2 percent a week earlier.   [refiappschart] The seasonally adjusted Purchase Index increased 2 percent from one week earlier and was up 3 percent on an unadjusted basis. Purchase activity is 36 percent lower year-over-year.   [purchaseappschart] "Treasury yields declined last week, driven by uncertainty over the health of the banking sector and worries about the broader impact on the economy. Mortgage rates declined for the second week in a row, with the 30-year fixed rate dropping to 6.48 percent, the lowest level in a month,” said Joel Kan, MBA’s Vice President and Deputy Chief Economist. “ However, mortgage rates have not dropped as much as Treasury rates due to increased MBS market volatility. The spread between the 30-year fixed and 10-year Treasury remained wide at around 300 basis points, compared to a more typical spread of 180 basis points.” Other Highlights from MBA’s Weekly Mortgage Applications Survey