Nokia (NOK) Q4 2025 earnings review
The AI Pivot Begins to Pay Off, Backed by NVIDIA
Nokia closed FY25 with a clear signal that its strategic pivot is working. Q4 Comparable Net Sales grew 3% (constant currency), driven by a massive 17% surge in Optical Networks—direct validation of the 'AI Supercycle' thesis. While Mobile Networks stabilized (+6% growth), the real story is the strategic realignment: the completed Infinera acquisition and a landmark $1.0B (€0.86B) equity investment from NVIDIA. However, this transition comes at a cost; Comparable Operating Margin compressed by 90bps to 17.3% as the company invests heavily in Network Infrastructure. FY26 guidance targets €2.0-2.5B in operating profit, implying steady 11% growth at the midpoint, but Q1 seasonality looks rough.
🐂 Bull Case
The 'AI Supercycle' is no longer just a buzzword. Optical Networks grew 17% YoY in Q4, driven by demand from AI & Cloud customers. The book-to-bill ratio remains above 1.0. With the Infinera acquisition closed and integrated, Nokia has the scale to challenge for hyperscaler wallet share.
NVIDIA's $1.0B investment is a massive vote of confidence in Nokia's role in the AI-RAN and data center evolution. This strengthens the balance sheet and aligns Nokia with the undisputed leader of the AI era.
🐻 Bear Case
Growth comes at a price. Network Infrastructure operating margin fell 310bps YoY to 16.5% due to product mix (more IP/Optical, less high-margin legacy) and integration costs. Reported gross margins fell 120bps due to restructuring charges.
Management explicitly flagged that Q1 2026 will be worse than normal. Historic seasonality is a ~24% QoQ decline; Nokia expects a steeper drop, signaling a slow start to the new fiscal year.
⚖️ Verdict: 🟢
Bullish. The strategic haze is clearing. Nokia successfully pivoted from a stagnant mobile play to a critical infrastructure provider for the AI era. The optical growth (+17%) and NVIDIA backing outweigh the near-term margin friction caused by integration.
Key Themes
NVIDIA & The AI-RAN Pivot
NVIDIA invested $1.0B (approx. 2.9% stake) to partner on AI-RAN and data center networking. This moves Nokia beyond being just a 'plumbing' provider to a strategic partner in the AI compute stack. Management believes this positions them to lead the transition to AI-native networks. This is a game-changing validation.
Optical Networks: The AI Growth Engine
Accelerating. Optical Networks revenue surged 17% on a constant currency/portfolio basis (88% reported including Infinera). This is driven by North American hyperscalers and AI/Cloud customers. The segment has shifted from a laggard to the primary growth vector.
Restructuring Heaviness
While Comparable numbers look decent, the Reported numbers are messy. Nokia booked €299 million in restructuring charges in Q4 alone (up from €121M a year ago). Reported operating margin was only 8.8% vs 17.3% comparable. The transition to the new 'One Nokia' model is expensive.
Mobile Networks Stabilization
Stable/Reversing. Mobile Networks (MN) surprised to the upside with 6% CC growth in Q4, driven by Middle East/Africa (+15%) and Europe. While FY25 overall was down 4%, the Q4 performance suggests the worst of the spending pause in India and North America may be over, though MN remains a low-margin business (11.3% op margin vs NI's 16.5%).
Cloud & Network Services (CNS) Volatility
Decelerating. After a strong Q3 (+13% growth), CNS revenue fell 4% CC in Q4. While margins remain healthy (28.3%), the decline was driven by Core Networks weakness. This segment remains lumpy and difficult to model.
China Decoupling Continues
Greater China net sales collapsed 21% YoY in Q4. Nokia is effectively exiting the market as a major player, focusing instead on India (which dipped 7% in Q4 after a massive FY24) and North America (+5%).
Other KPIs
Accelerating. Up 90 basis points YoY. Driven by strong product mix and a provision release in CNS. This is a key indicator that despite aggressive growth in Optical, pricing discipline is holding.
Decelerating. Down from €429M in Q3 and €1.7B in 24Q4. The drop is largely driven by working capital timing and restructuring outflows. FY25 FCF conversion was 72%, within the 50-80% target range.
Stable. Increased by €377M sequentially, aided by the NVIDIA equity issuance (€859M proceeds) but offset by the purchase of the remaining stake in Nokia Shanghai Bell (€500M).
Guidance
Stable/Accelerating. The midpoint (€2.25B) represents ~11% growth over FY25's €2.02B. This factors in the new operating model and continued growth in Network Infrastructure.
Stable. Consistent with long-term targets. Confirms that the Q4 surge in Optical was not a one-off but the start of a trend.
Stable. Consistent with FY25 performance (72%). Indicates healthy cash generation despite capital requirements for capacity expansion.
Decelerating. Management explicitly warned that Q1 will decline 'somewhat more than normal seasonality' (historically -24%). Expect a soft start to the year.
Key Questions
NVIDIA Partnership Commercialization
You announced the $1B investment, but what is the specific roadmap for revenue generation from the AI-RAN partnership? When will we see the first commercial deployments?
Q1 Seasonality Weakness
You flagged Q1 2026 as weaker than normal seasonality. Is this driven by a pause in Mobile Networks after the Q4 stabilization, or supply chain constraints in Network Infrastructure?
NI Margin Compression
Network Infrastructure margins compressed 310bps YoY despite surging sales. How much of this is one-time integration cost for Infinera vs. a structural shift to lower-margin hardware mix in the AI era?
Cloud & Network Services Volatility
CNS swung from +13% growth in Q3 to -4% in Q4. What visibility do you have for this segment in FY26, and is the Core Networks weakness structural?