NMI Holdings (NMIH) Q2 2026 earnings review
Record Operating Performance Driven by Explosive NIW Growth
NMI Holdings delivered a flawless Q2 2026, setting records across virtually every meaningful financial metric. Total revenue grew 8% YoY to $187.9 million, while Net Income surged 10% to a record $105.8 million ($1.38 per share). The standout number was New Insurance Written (NIW), which spiked 29% YoY to $16.1 billion, completely reversing the seasonal sluggishness of Q1. Operating leverage continues to impress with the expense ratio dropping to 19.4%. While year-over-year default inventories remain elevated, the quarter-over-quarter default rate stabilized, and favorable prior-year reserve development pushed the loss ratio down to just 8.3%.
🐂 Bull Case
New Insurance Written (NIW) of $16.1 billion represents a massive 29% YoY acceleration. This growth rapidly scales the highly profitable Insurance-In-Force (IIF) portfolio, which hit a record $227.1 billion.
The company's expense ratio declined to 19.4%. NMIH's lean infrastructure allows top-line premium growth to drop almost directly to the bottom line.
🐻 Bear Case
Despite a slight QoQ dip in the default rate, total defaults are up nearly 20% YoY (8,020 vs 6,709). As larger, post-COVID vintages continue to season, reserve requirements could escalate.
The 29% surge in NIW is highly sensitive to mortgage rates and housing supply. Any re-acceleration in interest rates or a macro housing stall could abruptly reverse this momentum.
⚖️ Verdict: 🟢🟢
Strongly Bullish. NMIH is executing flawlessly. The 29% surge in new volume, combined with an expanding investment yield and a sub-20% expense ratio, creates a powerful compounding engine for book value per share.
Key Themes
New Insurance Written (NIW) Surges
Accelerating. NIW jumped 29% YoY to $16.1 billion, a massive step up from $12.3 billion in Q1 and $12.5 billion a year ago. This signals that NMIH's customer franchise expansion and lender penetration strategies are capturing significant market share in a volatile rate environment.
Relentless Operating Leverage
Stable. The underwriting and operating expense ratio fell to 19.4%, down from 19.8% in both the prior quarter and the prior year. Keeping absolute expenses functionally flat ($30.5M vs $29.5M YoY) while growing revenue 8% demonstrates the scalability of NMIH's platform.
Investment Portfolio Driving Incremental Yield
Accelerating. Net investment income grew 22% YoY to $30.3 million. The company is actively reinvesting cash flows from operations and maturing assets into a higher interest rate environment, creating a secondary profit engine outside of core underwriting.
Underlying Defaults Rising YoY Contradicts 'Flawless' Credit Narrative
While management touts an 'exceptionally high-quality book,' hard data shows total loans in default stand at 8,020—a 19.5% increase from 6,709 a year ago. The default rate has climbed from 1.00% to 1.16% over the same period. While the QoQ pace flattened, the absolute volume of distressed loans is undeniably expanding as the portfolio seasons.
Loss Severity Creeping Higher
Decelerating. Claims severity ticked up to 89% in Q2, compared to 82% a year ago. As more defaults emerge from the 2022-2024 vintages—which lack the massive home price appreciation (HPA) buffers of earlier cohorts—the ultimate cost to settle claims is structurally higher.
Macroeconomic Housing Market Vulnerability
NMIH's production is entirely tethered to US macro housing health. With consumer debt at highs and labor market softening noted in recent quarters, any severe 'K-shaped' economic divergence could rapidly stall the NIW engine and spike defaults simultaneously.
Rate GPS & AI Integration Defending Margins
Management continues to successfully deploy its 'Rate GPS' risk-based pricing engine across 950 MSAs. This granular technological approach allows NMIH to aggressively price attractive risk while actively avoiding over-concentrations in correcting markets like Florida and Texas. Coupled with internal AI productivity deployments, this tech stack is the primary driver of the sub-20% expense ratio.
Other KPIs
Accelerating. Up 5.8% YoY from $214.7 billion. This is the core revenue engine of the company, generating recurring premiums. The sustained growth indicates that new policy origination continues to outpace the run-off of older, refinancing policies.
Improving. Down from 13.3% in Q1 and 9.0% a year ago. The sharp decline was aided by a $14.1 million favorable development on prior-year claims reserves, which offset the $27.3 million in current-year claims incurred.
Accelerating. Up 15% YoY from $32.08. A pristine metric showing how effectively management is compounding shareholder capital through retained earnings and consistent stock buybacks.
Key Questions
Sustainability of Favorable Reserve Development
The loss ratio dropped to 8.3% heavily aided by $14.1 million in favorable prior-year reserve development. If we normalize for this, the current-year incurred claims run rate is significantly higher. At what point do these favorable back-year true-ups tap out?
NIW Drivers
NIW surged 29% YoY to $16.1 billion. How much of this volume spike was driven by isolated rate dips stimulating immediate demand, versus structural market share gains from competitors?
Vintage Default Progression
With defaults up nearly 20% YoY, can you provide color on the performance degradation curve of the '23 and '24 vintages compared to your initial underwriting models, given they lack the massive embedded equity of older books?