onsemi (ON) Q4 2025 earnings review
Stabilization Complete, Pivot to Growth Ahead
onsemi delivered a steady Q4 with revenue of $1.53B and Non-GAAP EPS of $0.64, landing squarely within guidance. The real story is the pivot in 26Q1 guidance: after a year of double-digit declines (FY25 Revenue -15%), the outlook implies a return to YoY growth (+3%). While gross margins remain compressed at ~38% (vs 45% peak), the company has aggressively reset its capital intensity, slashing CapEx by 50% YoY to generate record Free Cash Flow margins (24%). With a massive new $6B buyback authorization, management is signaling the bottom is in.
🐂 Bull Case
Q1 2026 guidance midpoint ($1.485B) implies +2.7% YoY growth, marking the first positive inflection after four quarters of contraction. The cycle trough appears to be in the rearview mirror.
Despite a 15% drop in FY25 revenue, Free Cash Flow grew 17% to $1.42B. Management slashed CapEx from $694M (FY24) to $341M (FY25), proving the heavy investment cycle is over.
A new $6B share repurchase program authorizes buying back ~15-20% of the market cap. This follows a year where they already returned 100% of FCF to shareholders.
🐻 Bear Case
Gross margins have stabilized but at a significantly lower level. Non-GAAP GM of 38.2% is far below the ~45% enjoyed in FY24. Utilization headwinds persist, and it's unclear when (or if) margins can return to previous highs.
Power Solutions (PSG) and Advanced Solutions (AMG) declined sequentially in Q4 (-2% and -5% respectively). The recovery is uneven, currently propped up by the smaller Intelligent Sensing Group.
⚖️ Verdict: 🟢
Bullish. The revenue contraction has bottomed, cash flow is accelerating due to disciplined CapEx cuts, and the buyback authorization provides a massive floor. The margin reset is the only lingering concern.
Key Themes
Capital Intensity Reset
onsemi has successfully transitioned from an investment phase to a harvest phase. FY25 CapEx was cut by nearly 50% ($341M vs $694M in FY24), allowing Free Cash Flow to actually grow (+17% YoY) despite a $1.1B drop in topline revenue. This supports the 'record high' 24% FCF margin narrative.
Intelligent Sensing (ISG) Breakout
Accelerating. While the larger Power and Advanced segments shrank sequentially, the Intelligent Sensing Group (ISG) posted a strong +9% sequential gain in Q4. This divergence suggests the automotive/industrial sensing market may be recovering faster than power applications.
Vertical GaN & Innovation
Management introduced a new vertical gallium nitride (vGaN) platform and signed a manufacturing agreement with GlobalFoundries. While revenue impact is future-dated, this fills a critical gap in the power density roadmap for AI data centers and automotive, complementing their SiC strength.
Margin Compression Stuck
Stable but low. Non-GAAP Gross Margin has hovered around 38% for three quarters (37.6% -> 38.0% -> 38.2%), significantly down from 45.3% a year ago. The guidance for Q1 (37.5% - 39.5%) suggests no immediate V-shaped recovery in profitability, likely due to lingering underutilization.
Shareholder Returns Aggression
Management is not hoarding cash. They returned 100% of FCF in 2025 via buybacks and just authorized a massive new $6B program. At current valuations, this could reduce share count significantly over the next 3 years.
Other KPIs
Accelerating. Up significantly from $418.7M in Q3, driven by working capital improvements. This strong finish to the year secured the record annual FCF margin.
Improving. Inventory dollars dropped $58M sequentially ($2,047M -> $1,989M). While still elevated compared to historical norms, the trend is moving in the right direction as the company exits the destocking phase.
Decelerating. Revenue fell 2% sequentially and 11% YoY. As the largest segment (47% of rev), its inability to pivot to growth in Q4 remains a drag on the overall recovery speed.
Guidance
Reversing to Growth. The midpoint ($1.485B) represents a +2.7% increase vs 25Q1 ($1.446B). This snaps a streak of four consecutive quarters of YoY declines.
Stable. The midpoint (38.5%) is slightly up from Q4's 38.2%, signaling that pricing pressure has stabilized and utilization may be ticking up modestly.
Stable. Midpoint ($0.61) is comparable to Q4's $0.64, factoring in typical Q1 seasonality. However, it remains above the trough EPS of $0.53 seen in 25Q2.
Key Questions
Utilization & Margin Recovery
With revenue guiding back to growth, when can we expect utilization rates to normalize? What is the revenue run-rate required to get Gross Margins back above 40%?
Power Solutions Lag
PSG declined sequentially while Intelligent Sensing (ISG) grew. Is this a specific product mix issue in Power (e.g., auto vs industrial), and when does PSG return to sequential growth?
Buyback Pace
With a $6B authorization and strong FCF, will the pace of buybacks accelerate in 2026 beyond the 100% of FCF target set in 2025?