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Soaring Mortgage Rates Dampen Buying Sentiment as US MBA Purchase Index Falls to 145.1

2026-10-08

Core Overview: As of October 2, 2026 (Q4 2026), the latest reading for the US MBA Purchase Index reported at 145.1, sliding further from the previous week's (Q3 2026) 148.2. This indicator extends its previous volatile and downward trend, showing that under the current economic environment, Americans' willingness to buy homes remains weak, and overall housing market demand has yet to see a substantial turning point.

Key Details: From the perspective of detailed market dynamics, the climb in mortgage rates is the primary driver suppressing homebuying demand. According to market tracking data, the 30-year fixed mortgage rate for the week jumped from 7.30% in the prior week to 7.49%. Not only are first-time homebuyers and those looking to upgrade deterred by heavy borrowing costs, but the total volume of refinance applications—which are even more sensitive to interest rates—is also facing significant contraction pressure.

In-Depth Attribution: In response to this data decline, financial institution Newsquawk pointed out in its analysis that although weekly-frequency data like the MBA Purchase Index is susceptible to holiday and seasonal adjustment interference, its four-week trend tends to closely track fluctuations in mortgage rates. When market liquidity tightens and financing costs rise rapidly, buyers naturally adopt a strong wait-and-see attitude, directly cooling the mortgage market and concurrently weakening subsequent home sales momentum.

Outlook and Risks: In the short term (1-2 months), if mortgage rates persist at 7% or even above 7.5%, both existing and new home sales data may face further downside risks, posing severe challenges to builder confidence and housing-related peripheral industries. In the medium term (3-6 months), close attention must be paid to upcoming employment and inflation reports. If macroeconomic data can prompt the Federal Reserve to expand easing expectations and subsequently guide long-term Treasury yields lower, pent-up homebuying demand may finally return to the market.

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