Market snapshot: May rate-lock activity cools as rates rise
May 2026 brought a softer barrage of mortgage activity, with Optimal Blue’s Market Advantage report showing mortgage lock volume slid 9% from April. The month still posted a year-over-year gain, with total activity 7% higher than May 2025. The shift reflects higher borrowing costs dampening both purchase appetite and refinancing plans as the housing market navigates a higher-rate environment.
Purchase demand remains the driver, even as lock-through slips
Purchase locks dominated the landscape in May, comprising more than 81% of all rate locks. Refinance locks accounted for the remaining 19%, a share that marks the lowest since June 2025. The data underscore a continued preference for securing property ownership amidst affordability pressures, even as lenders monitor buyer sentiment in a rate-sensitive market.
Rates move higher; yields widen slightly
The average 30-year conforming rate tracked by Optimal Blue rose to 6.44% in May, up 13 basis points from April. The 10-year Treasury yield climbed to 4.45% on the month, adding to the spread between mortgage rates and Treasuries, which widened to roughly 200 basis points. These moves help explain why mortgage lock volume slid as borrowers faced higher upfront costs.
Borrower behavior shifts: pull-through pulls back
Market participants noted that pull-through rates—the percentage of locked loans that eventually close—declined for both purchase and refinance categories. The cooling of execution amid volatile rate conditions suggests some borrowers paused or re-evaluated plans after locking, a dynamic that can influence supply and pricing in the weeks ahead.
Refinancing activity: steep pullbacks led the way
Refinance activity showed some of the sharpest declines. Rate-and-term refinance volume dropped 34% from April, though it remained 46% above year-ago levels. Cash-out refinances also eased by 13% month over month but stayed 7% higher than in May 2025. The combination of higher rates and shifting borrower priorities contributed to a stickier refine-and-reprice cycle.
Alternative products rise as borrowers diversify
The May data highlighted a tilt toward non-traditional loan products. Adjustable-rate mortgages accounted for 11% of production in May, the highest level since October 2022 (excluding March 2026). Non-qualified mortgage (non-QM) loans also featured in the mix, signaling lenders’ appetite to serve borrowers who do not fit standard guidelines.
Takeaways for homebuyers and lenders
With rates elevated and affordability stretched, buyers are more selective, and lenders are prioritizing purchase origination along with rate-term refinances when viable. The 9% month-over-month slide in mortgage lock volume, combined with a still-healthy year-over-year pace, suggests a market in flux rather than a straightforward slowdown. Investors and policymakers will watch how rate trajectories, inflation data, and housing supply respond as summer activity unfolds.
Key May metrics at a glance
- Total rate lock volume: -9% MoM; +7% YoY
- Purchase locks share: 81% of all rate locks
- Refinance locks share: 19%
- Average 30-year conforming rate: 6.44% (May)
- 10-year Treasury yield: 4.45% (May)
- Rate spread to Treasuries: ~200 bps
- Rate-and-term refinance volume: -34% MoM
- Cash-out refinances: -13% MoM
- ARM share of production: 11%
- Non-QM activity: ongoing but limited as a share
Discussion