Ultra Clean Holdings, Inc. (UCTT) | The Buildout — AI Infrastructure
The Verdict
Ultra Clean Holdings does not sell anything a hyperscaler or chipmaker buys directly for AI. It builds the subsystems, gas panels, chemical and fluid delivery modules and process modules that wafer-fab-equipment makers install in the fabs AI demand is forcing the industry to build, and it cleans and analyzes the parts inside those tools once they run. That makes it a second-derivative supplier: its revenue follows its customers' tool shipments, and its cleaning business follows the wafer starts those tools generate. None of this is broken out — the company discloses no AI-attributable revenue and does not size the end markets it names as AI-driven.
| Market Cap | — |
| Revenue (TTM) | $2.2B |
| Revenue Growth | +2.5% |
| EBITDA Margin (TTM) | 6.3% |
| Net Debt | $520M |
| Earnings Beats | 3 of 7 |
| P/E (TTM) | — |
| EV/EBITDA (TTM) | — |
What We Like
- FQ2 2026 revenue was a record $644.9M, up 20.8% QoQ from $533.7M and above the high end of the $565M–$605M guide; FQ3 is guided to $700M–$750M.
- Non-GAAP gross margin rose for three straight quarters — 16.1% → 16.5% → 16.7% — which management attributes to higher volumes and factory efficiencies.
- Capacity is being built on a dated schedule: $3.5B ready by end-2026, a $4B run rate by mid-2027, and a $5B run rate under evaluation for 2H 2028.
- A February 2026 refinancing is expected to cut the weighted-average borrowing rate from about 6.2% to about 1.4%, saving roughly $30M a year in cash interest; the revolver was upsized to $250M with maturity extended to 2031.
- Management said top-two customer concentration fell from 64% to the high 50s, and the company is growing with lithography customers as EUV adoption expands.
What We’re Watching
- Operating cash flow has been negative two quarters running — −$33.3M in FQ1 and −$41.1M in FQ2 — with cash down to $255.9M and purchase commitments of $721.3M on an inventory build.
- Customer concentration is still high: Lam Research was 37.0% and Applied Materials 21.7% of FY2025 revenue, and the top two were 58.5% of FQ1 2026 revenue.
- An analyst questioned the Q3 guide against the largest customer's roughly 30% QoQ systems growth; management attributed the gap to subsystem integration timing and said it evens out over two quarters.
- Services is the lagged engine: non-GAAP services gross margin slipped to 28.9% from 30.0% sequentially, and acceleration waits on U.S., Korea and Taiwan leading-edge fab ramps.
The demand and margin evidence points to a strengthening story, and every near-term guide in evidence was met or beaten. The unproven parts are the ones the company is betting capital on: capacity and inventory are being built against customer forecasts management calls unprecedented but which are not firm orders, with no disclosed backlog or book-to-bill to check them against. The open question is whether those forecasts convert on schedule — if they do, operating leverage on $4B of capacity is the whole story; if timing slips, the working-capital build is the first place it shows.
Earnings
Ultra Clean reported record FQ2 2026 revenue of $644.9M, up 20.8% from $533.7M in FQ1 and above the high end of the $565M–$605M guide it issued a quarter earlier. Products revenue was $572.7M and Services $72.2M. Reported gross margin was 16.1% and EBITDA $48.8M, or 7.6% of revenue.
| Metric | Q2 FY2026 | Q1 FY2026 | Q2 FY2025 | YoY |
|---|---|---|---|---|
| Revenue | $645M | $534M | $519M | +24.3% |
| Gross margin | 16.1% | 15.8% | 15.3% | +80bps |
| EBITDA | $49M | $31M | −$123M | −139.6% |
| EPS | $0.19 | $-0.40 | $-3.58 | −105.4% |
| Operating cash flow | −$41.1M | −$33.3M | n/a | — |
We recently added 26,000 square feet of clean room space in Malaysia with additional expansion planned in Singapore and Czech Republic soon.— Sheri Brumm, CFO, 2026-08-03
Management tone: Tone escalated between the two calls in evidence. In April management described the early stage of a multiyear cycle and framed capacity softly — around $3 billion in revenue today that could scale to $4 billion with modest capital. By August it was committing to dated capacity milestones, called customer forecast visibility "unprecedented," and said sufficient spare capacity would become a competitive advantage in an up cycle. Management was direct on the shortage question ("the answer is no") and on the overflow opportunity, but reframed the one question on whether the Q3 guide was conservative against its largest customer's growth. The incoming CFO did not give independent forward commentary; the outgoing CFO fielded the margin question.
Management Guidance
For FQ3 2026 management guided revenue of $700M–$750M and EPS of $0.83–$1.03, an implied +8.5% to +16.3% sequential increase. Beyond the quarter it said gross margin should move toward the 17% range "as we move through the rest of the year and hopefully moving beyond that," and reaffirmed a $4B revenue and 20% gross margin goal "especially during 2027," with roughly 10% operating margin at that revenue level referenced by analysts and not contradicted. Services revenue is expected to grow double-digit in 2026 and 2027, with acceleration deferred until U.S. advanced fabs ramp and Korea and Taiwan leading-edge capacity comes up. The 2026 tax rate is guided to the low 20% range. Capacity milestones are $3.5B ready by end-2026, a $4B run rate by mid-2027, and a $5B run rate in 2H 2028 subject to a Southeast Asia decision. Management cautioned that margins move with volume, mix and manufacturing region.
Trajectory
Revenue drifted lower through FY2025 — $519M, $510M, $507M — then stepped up to $533.7M in FQ1 2026 and $644.9M in FQ2 2026, a record. The step-up is Products-led: Products grew 22.9% QoQ into FQ2 ($465.7M to $572.7M) while Services grew 6.2% ($68.0M to $72.2M), consistent with Products tracking tool shipments and Services tracking wafer starts. Reported gross margin moved from 15.3% in Q4 FY2025 to 15.8% in FQ1 and 16.1% in FQ2, and EBITDA margin from 6.0% to 5.7% to 7.6%. Management attributes the margin gain to higher volumes driving factory efficiencies, and cautions that no single margin level should be extrapolated because product margins range from 10% to 60% depending on mix.
The Model
The model projects FY+1 revenue of $2,738.6M and EBITDA of $237M, an 8.67% margin. For FY+2 it projects revenue of $3,850.0M and EBITDA of $424M, an 11.0% margin. The near-term anchor is the FQ3 guide plus the capacity already committed — $3.5B ready by end-2026 and a $4B run rate by mid-2027. The FY+2 step-up rests on that capacity being absorbed against a $200B wafer-fab-equipment environment and on the stated path toward 20% gross margin at a $4B run rate.
| Metric | FY2025 | Next FY (E) | Following FY (E) |
|---|---|---|---|
| Revenue | $2.1B | $2.7B | $3.9B |
| YoY Growth | — | +33.3% | +40.6% |
| EBITDA | −$31M | $237M | $424M |
| EBITDA Margin | -1.5% | 8.7% | 11.0% |
Projections are the median of 5 independent model runs. The model’s revenue sits 19.6% above analyst consensus.
For FQ3 2026 management guided revenue of $700M–$750M and EPS of $0.83–$1.03, an implied +8.5% to +16.3% sequential increase. Beyond the quarter it said gross margin should move toward the 17% range "as we move through the rest of the year and hopefully moving beyond that," and reaffirmed a $4B revenue and 20% gross margin goal "especially during 2027," with roughly 10% operating margin at that revenue level referenced by analysts and not contradicted. Services revenue is expected to grow double-digit in 2026 and 2027, with acceleration deferred until U.S. advanced fabs ramp and Korea and Taiwan leading-edge capacity comes up. The 2026 tax rate is guided to the low 20% range. Capacity milestones are $3.5B ready by end-2026, a $4B run rate by mid-2027, and a $5B run rate in 2H 2028 subject to a Southeast Asia decision. Management cautioned that margins move with volume, mix and manufacturing region.
What Could Go Right — and Wrong
- Wafer-fab-equipment spending reaches management's $190B–$220B 2027 range, sustaining the demand curve the capacity plan is built against.
- Gross margin moves into the 17% range and beyond, tracking toward the 20% gross margin and roughly 10% operating margin model.
- Services revenue acceleration arrives after U.S. advanced fabs ramp and Korea and Taiwan leading-edge capacity comes up, adding the higher-margin services layer.
- Customer forecasts convert into firm orders and the $4B capacity is absorbed, delivering operating leverage on fixed factory cost.
- Customer mix keeps widening — the top two fall below the high 50s — reducing dependence on two customers' capex plans.
- Demand timing slips at Lam Research or Applied Materials, leaving inventory and new capacity ahead of the revenue it was built for.
- A component shortage or supply-chain excursion delays revenue recognition; management itself warned "you will see excursions in WFE supply chain."
- Mix deterioration pushes blended gross margin back down, given the disclosed 10% to 60% range in product margins.
- Competitors add capacity at the same time, pressuring utilization and pricing as UCTT's own capacity arrives.
- The working-capital build extends past two quarters, keeping operating cash flow negative and drawing down the $255.9M cash balance.
Looking Ahead
The next twelve months are about execution against commitments already made. Capacity milestones come first — $3.5B ready by end-2026 — while gross margin is expected to move toward the 17% range. Services is guided to grow double-digit but only accelerates once U.S. advanced fabs ramp and Korea and Taiwan leading-edge capacity comes up. The company has said it will decide "pretty quickly" on a Southeast Asia greenfield site for a $5B run rate in 2H 2028, and a new CFO, Mike Keogh, has not yet publicly restated the $4B framework.
- Q3 2026FQ3 results — Tests whether revenue lands at or above the $700M–$750M guide.
- End of 2026$3.5B capacity ready — First dated capacity milestone.
- Rest of 2026Gross margin toward 17% — Management guided margin improvement through the rest of the year.
- Mid-2027$4B run-rate capacity — Tied to a $200B wafer-fab-equipment environment.
- 202720% gross margin at $4B — The medium-term margin model management reaffirmed.
- 2H 2028$5B run-rate capacity — Depends on a Southeast Asia greenfield decision still under evaluation.
Financials
Annual Summary
| Metric | FY2024 | FY2025 | TTM | YoY |
|---|---|---|---|---|
| Revenue | $2.1B | $2.1B | $2.2B | -2.1% |
| Gross Margin | 17.0% | 15.7% | 15.8% | 127bps |
| EBITDA | $167M | −$31M | $139M | -118.8% |
| EBITDA Margin | 8.0% | -1.5% | 6.3% | 951bps |
| Net Income | $24M | −$181M | −$23M | -864.6% |
| Free Cash Flow | $2M | $15M | −$113M | — |
| Net Cash | — | — | — | — |
Key Ratios (Trailing)
- P/E TTM—
- EV/EBITDA TTM—
- EV/Revenue TTM—
- Price/FCF TTM—
- Gross Margin (TTM)15.8%
- EBITDA Margin (TTM)6.3%
- Net Margin (TTM)-1.1%
- ROIC4.3%
- FCF Conversion-81.2%
- SBC / Revenue0.9%
The Company
Ultra Clean Holdings supplies critical subsystems, components, parts and ultra-high-purity cleaning and analytical services to the semiconductor industry, positioning itself as an integrated outsourced solution for major subassemblies. Its Products segment designs and builds chemical delivery modules, frame assemblies, gas and fluid delivery systems, precision robotics and process modules for semiconductor and display capital-equipment makers. Its Services segment cleans and coats process-tool chamber parts under ultra-high-purity conditions and runs micro-contamination analysis on tool parts, wafers, chemicals, cleanroom materials and deionized water. Products was about 88.8% of FQ2 2026 revenue and Services about 11.2%.
The company runs a broad owned and leased footprint. Headquarters is in Hayward, California, with manufacturing and engineering sites in California, Texas, Arizona, Israel, Oregon, China, Malaysia, Singapore, the United Kingdom, Thailand, the Philippines and Czechia, and parts-cleaning, analytics and engineering sites in Colorado, Arizona, California, Oregon, Maine, Texas, Ireland, Israel, Taiwan, South Korea, Singapore and China. It owns buildings and land in South Korea, China and the United Kingdom. The 10-K gives locations only — no square footage, capacity, utilization or site-level capex. Capacity additions are disclosed on earnings calls instead: 26,000 sq ft of clean room added in Malaysia, increases planned within the existing footprint in Singapore and Czech Republic, and a first MPX Center of Excellence in Hillsboro, Oregon.
Business Segments
Competitive Landscape
The competitive set is broad and named by product category in the 10-K. Ichor Systems and Fujikin compete in gas delivery systems; Foxsemicon, Jabil, VDL ETG, Celestica and Benchmark Electronics compete in other critical subsystems; Swagelok, Parker Hannifin, Fujikin and Watlow compete in gas delivery components; KoMiCo, SHT, EnPro and Pentagon in cleaning and coating; and Balazs (an Air Liquide company), Eurofins and SCAS in analytical services. The 10-K also flags a structural friction: some suppliers designated by customers are also competitors, which the company says makes procuring enough components a special challenge. Ichor's own filing cross-references the overlap in fluid delivery subsystems.
- Ichor SystemsNamed in the 10-K as a gas delivery systems competitor; Ichor's own filing says "the fluid delivery subsystem market is concentrated, and we face competition from Ultra Clean Technology."
- FujikinNamed in the 10-K as a competitor in both gas delivery systems and gas delivery component solutions.
- Benchmark ElectronicsNamed among other critical-subsystem competitors; reported Q2 2026 revenue of $756M, +18% Y/Y, with Semi-Cap +17% and component lead times stretching to 7–9 months and some 12 months.
- CelesticaNamed among other critical-subsystem competitors; reported Q2 2026 revenue of $4.70B, +62% Y/Y, and said stronger wafer fab equipment demand tailwinds are expected to continue into 2027.
- JabilNamed among other critical-subsystem competitors; raised its FY26 revenue outlook to about $34B on its March 2026 quarter call.
Supply Chain
Ultra Clean sits between component and material suppliers and the wafer-fab-equipment OEMs that buy its subsystems. The 10-K discloses unnamed single- and sole-source dependence, and no neighbor transcript in the evidence names Ultra Clean directly.
More on UCTT: Earnings recap