AerCap (AER) Q4 2025 earnings review
Record Year Capped by Strong Capital Returns, Despite Spirit Headwinds
AerCap concluded a record-breaking FY25 with Adjusted EPS of $15.37 and a 19% surge in Book Value per Share to $112.59. While Q4 faced a specific headwind from the Spirit Airlines restructuring—pushing net maintenance contribution to a negative $106M—the core thesis remains intact: AerCap is arbitraging the private-public valuation gap. They sold $1.3B of assets in Q4 at a ~24% premium to book value while buying back shares below book. Management signaled confidence by raising the dividend 60% (to $0.40) and launching a new $1B buyback program. FY26 guidance of $12-13 EPS appears lower only because it excludes gains on sale, which have been a consistent earnings driver for two decades.
🐂 Bull Case
AerCap sold $3.9B of assets in FY25 at a ~27% margin (approx. 2.0x equity) while buying back 22.1 million shares at ~1.1-1.2x book. This capital recycling creates automatic accretion.
CEO Aengus Kelly reiterated that widebody production will not surpass 2016 peaks this decade. With extension rates at 87% (up from 79% in 2024), airlines are forced to hold onto existing metal, driving lease rates higher.
🐻 Bear Case
The Spirit bankruptcy hit Q4 hard, swinging Net Maintenance Contribution to -$106M (vs typical +$30-50M). Aircraft downtime will persist through 2026, creating a revenue drag before these assets are redeployed.
While gains on sale are consistent, FY25 was exceptional ($819M total gains). As the cycle matures or if trading liquidity tightens, the inability to replicate ~$4.00/share in gains would make the valuation look more expensive.
⚖️ Verdict: 🟢🟢
Bullish. The Spirit hit is a one-off operational speed bump in a structural super-cycle. AerCap is printing cash, leverage is low (2.1x), and they are aggressively shrinking the share count while book value compounds at 19%.
Key Themes
Valuation Arbitrage Execution
Management continues to exploit the disconnect between private market asset values and public market share price. In Q4, they sold 55 assets for $1.3B at a 24% margin. Simultaneously, they bought back $444M of stock. The math is simple: sell hardware at ~1.9x book, buy paper at ~1.1x book. This remains the primary thesis for the stock.
Maintenance Contribution Shock (Spirit Airlines)
Net Maintenance Contribution (maintenance revs less leasing expenses) is typically a predictable $30-50M profit generator. In Q4, this collapsed to a loss of $106M due to the Spirit Airlines restructuring (recording maintenance rights amortization and higher leasing expenses). While management guides this as transitory, the downtime on these aircraft will bleed into 2027.
Capital Return Acceleration
AerCap is shifting to more aggressive capital returns. The quarterly dividend was raised 60% sequentially to $0.40 (previously $0.25). Combined with a new $1B share repurchase authorization and $2.6B returned to shareholders in 2025, the company is signaling that it generates more cash than it can efficiently deploy into new metal alone.
Engine Leasing Power
The engine leasing segment is becoming a strategic fortress. AerCap owns the largest portfolio of CFM56 engines. With new tech engines (GTF/LEAP) suffering durability issues, demand for spare engines is 'exceptionally high.' Management noted they have committed to 281 new engines in the last two years, securing a pipeline that is difficult for competitors to replicate.
Macro-Level Supply Paralysis
The 'Higher for Longer' theme applies to aircraft retention. Extension rates hit 87% in 2025 (up from 79% in 2024). Management stated plainly: 'Production surprises to the upside simply do not occur.' This scarcity protects residual values and lease rates even if passenger demand softens slightly.
Other KPIs
A record result, translating to $15.37 per share. This includes the benefit of robust gains on sale but excludes the massive $1.5B net recoveries related to Ukraine, keeping the 'core' number clean and comparable.
Stable. Well below the typical target of ~2.5x-2.7x. This low leverage ($21B liquidity vs $11B uses) provides massive dry powder for the $1B buyback program or opportunistic fleet acquisitions without stressing the balance sheet.
Stable. Up 4% YoY. Growth is muted by asset sales (selling revenue-generating assets) and the Spirit downtime, but offset by strong releasing rates and delivery of new technology aircraft.
Guidance
Decelerating. This appears to be a drop from FY25's $15.37, but strictly because the guidance *excludes* gains on sale (which contributed $3.95 in FY25). If AerCap executes typical sales volume ($2-3B) at current margins, the 'real' economic EPS would likely exceed $15.00 again. Management projects core improvement: excluding gains, tax, and other income noise, core EPS adds +$1.80 YoY.
Decelerating volume implied vs FY25 record of $3.9B, but consistent with long-term averages. This remains a wild card that is likely to be beaten if the market remains hot.
Stable. Consistent with the $6.1B spent in FY25. This indicates continued fleet rejuvenation despite OEM delays.
Key Questions
Spirit Reconfiguration Timeline
The $106M hit to maintenance contribution was severe. How much of the Spirit fleet downtime is strictly technical (maintenance) vs. marketing (finding new lessees), and is the H2 2026 recovery timeline conservative?
Capital Deployment vs. Leverage
Leverage is at 2.1x, significantly below the historic 2.7x target. Why not accelerate buybacks even further beyond the $1B authorization given the 1.9x book value arbitrage?
Used Aircraft Sales Durability
You sold $3.9B in assets this year. Who are the buyers at these elevated 1.3x+ book value multiples? Are we nearing a saturation point for investor demand in the secondary market?