What are today's mortgage interest rates: December 29, 2025?

Following three Fed cuts in September, October and December 10, 2025 and softer inflation, average mortgage rates have fallen from 2025 highs: Zillow reports a 30-year fixed at 5.99% and a 15-year at 5.38% (as of Dec. 23, 2025), while average refinance rates are 6.64% (30-year) and 5.63% (15-year). The lower, sub-6% 30-year average improves affordability for qualified buyers and creates selective refinance opportunities for borrowers with rates above roughly 7%, but lenders are actively repricing risk and markets remain sensitive to new economic data that could reverse momentum.

Analysis

Market structure: Lower 30y averages (~5.99%) and 15y (~5.38%) widen the addressable buyer pool and immediately favor homebuilders (LEN, PHM, DHI), mortgage originators (RKT), and agency MBS ETFs (MBB) because origination volumes and MBS prices should rise if rates stay near current levels. Banks with large mortgage pipelines (BAC, JPM) gain fee income but face NIM pressure if cuts continue; mortgage REITs (NLY, AGNC) see mark-to-market upside but heightened prepayment risk. Cross-asset: a weaker 10y compresses yields, tightens MBS-Treasury spreads, mildly weakens USD and supports gold; equity sectors tied to housing and cyclical consumption should outperform short-duration defensives if trends persist.

Risk assessment: Tail risks include a CPI/employment surprise that re-accelerates inflation and forces a Fed pause/hike (10y >4.25% within 3 months) which would trigger 10–25% mark-to-market losses in MBS/mREITs and crush mortgage origination momentum. Short-term (days–weeks) volatility will hinge on Jan CPI/FOMC communications; medium-term (3–6 months) depends on inventory and credit quality; long-term (12+ months) outcome depends on housing supply response and refinance exhaustion. Hidden dependencies: prepayment speed, servicing capacity, and bank deposit flight; regulatory changes to qualification rules or QE-like MBS purchases would materially reprice risk.

Trade implications: Favor tactical long exposure to homebuilders and MBS while hedging rate-reversal risk: use small equity positions and call spreads on originators, add agency MBS ETFs, and buy yield-protection via TLT put spreads. Pair trades: long PHM (housing) vs short select high-P/E tech (QQQ overweight short) to express cyclical tilt. Time entries in the next 2–6 weeks to capture year-end momentum but set explicit yield-based stop-losses.

Contrarian angles: Consensus assumes smoothing lower rates — misses that refinancing cohorts from 2023–24 create a finite demand surge that will fade, making originator revenue volatile after 6–12 months. mREIT rally is likely overstating sustainable carry because prepayments shorten duration and reinvestment risk rises if rates move up; historical parallels (post-cut refi waves in 2019–20) show a sharp follow-on slowdown once initial demand is served. If inventories rise or inflation re-accelerates, housing-sensitive trades reverse quickly — size positions accordingly.

Key Decisions for Investors

• Establish a 2–3% portfolio long position in Lennar (LEN) and/or PulteGroup (PHM) split evenly (1–1.5% each) with a 6–12 month horizon; use 6–9 month 25–30% OTM call spreads if available to cap downside. Exit or hedge if 10y Treasury yield >4.25% or builder sentiment falls >15% m/m.
• Build a 1–2% tactical position in Rocket Companies (RKT) equity or equivalent 6-month call spread to capture origination upside; set stop-loss if mortgage applications drop >20% quarter-over-quarter or 10y yield >4.25%.
• Allocate 2–3% to agency MBS via MBB (iShares MBS ETF) to capture coupon and spread compression; simultaneously buy a 3-month TLT put spread sized to cover 50% of MBB position notional to hedge a quick yield re-ramp (trigger if 10y >4.25%).
• Trim 2–4% from long-duration/high P/E tech exposure (e.g., reduce QQQ or individual names with >30x forward P/E) and redeploy into housing/cyclical names over the next 2–6 weeks; re-evaluate after next CPI and Fed communication (target dates: next monthly CPI and the following FOMC statement).