


Sources and simple chart notes
Chart 1 combines annual MBA observations for 2000–2008, the Urban Institute’s typical historical range, and selected later readings. The later points are January and October 2022, July 2023, May 2024, September 2025 (monthly average) and October 9, 2026 (weekly). A complete annual series was not obtained; missing values are not filled in. All shares include purchase and refinance applications.Chart 2 shows judgment-based ranges for annual averages. The main forecast stays near recent levels, then assumes modest relief. The other paths show how lower or persistently high borrowing costs could change demand. These ranges have not been statistically tested and are not confidence intervals.The 6.39% figure in Trading Economics describes a historical ARM interest rate, not loan demand. Its underlying Freddie Mac series ended in 2022, so it cannot prove a record remained unbroken through 2025. HSH explains the market rates used to adjust loans; it does not count ARM applications. Both resources are retained below for background.- Homes.com — ARM demand hits highest level in a year Current 10.5% application-share headline. Full page could not be retrieved; the indexed excerpt was cross-checked against the October 14 report below.
- Trading Economics — historical 5/1 ARM rate 6.39% June 2006 high and 2.37% December 2021 low, within its 2005–2022 historical series.
- Freddie Mac via FRED — MORTGAGE5US Discontinued weekly series; final observation November 10, 2022.
- HSH — ARM index histories Index histories and current versus discontinued index series; not a loan-activity dataset.
- Federal Reserve — historical MBA data table Annual MBA column, 2000–2008. The paper explains that the MBA measure uses mortgage applications, despite the chart’s origination heading.
- Federal Reserve — methodology and research Section 2 distinguishes application data from household mortgage measures.
- Urban Institute — May 2024 Housing Finance Chartbook, p. 10 Historical range and dated 2022–2024 weekly observations, sourced to MBA.
- MBA — ARM Applications Level and Share, October 2025 September 2025 share averaged 10%; application index approximately one-tenth of 2004 peak. Retrieved indexed text.
- NAHB — ARM Share Increased as Mortgage Rates Spiked, October 7, 2026 September 2026 monthly rates, application share and volume changes.
- ABA DataBank — ARMs are noticeable but niche, January 2026 Outstanding ARM share of 4% in Q2 2025 and discussion of post-crisis lending changes.
- CFPB — ARM index and margin Reset rate mechanics: index plus margin, subject to contractual caps.
- CFPB — ARM fine print Adjustment schedule and rate-cap considerations.
- FloorDaily — October 14, 2026 MBA report summary Week ending October 9: 10.5% ARM share; total applications down 2.7%.