Ultra Clean Holdings, Inc. (UCTT) | The Buildout — AI Infrastructure
The Verdict
Ultra Clean Holdings designs and manufactures the subsystems, components, parts, and modules that go inside semiconductor production tools — gas and fluid delivery, robotics, process modules, frames — and it provides ultra-high purity chamber cleaning and contamination analysis for fabs. Its parts sit in the deposition, etch, lithography, and packaging equipment that chipmakers use to produce AI-era semiconductors, making UCT an indirect but broad supplier into the AI infrastructure buildout.
| Market Cap | — |
| Revenue (TTM) | $2.1B |
| Revenue Growth | −3.2% |
| EBITDA Margin (TTM) | -1.6% |
| Net Debt | $457M |
| Earnings Beats | 3 of 7 |
| P/E (TTM) | — |
| EV/EBITDA (TTM) | — |
What We Like
- Q2 FY2026 non-GAAP EPS was $0.70, above the $0.60 top end of guidance.
- Q3 FY2026 non-GAAP EPS guide is $0.83–$1.03, up from $0.70 in Q2.
- Capacity expansion is dated: about $3.5B annualized capacity by end-2026 and $4B by mid-2027.
- Management's 2027 WFE planning range is $190B–$220B, with deposition and etch share expected to move from mid-30s to high-30s percent of WFE.
- Balance-sheet refinancing cut expected weighted-average borrowing rate from ~6.2% to ~1.4%, with ~$30M annual interest savings.
What We’re Watching
- Operating cash flow was negative for two straight quarters: -$33.3M in Q1 and -$41.1M in Q2 FY2026.
- Top-two customers still represented 58.5% of Q1 FY2026 revenue; Lam alone was 36.7%.
- Product gross margin is 15.1% on the non-GAAP call basis in Q2, versus the 20% target at $4B revenue.
- No formal backlog or book-to-bill is disclosed, so forward visibility depends on inventory, purchase commitments, and customer forecasts.
The thesis is strengthening on the product side after two beat-and-raise quarters, dated capacity commitments, and a refinancing that cut borrowing costs. It remains unproven on cash conversion and margins; the open question is whether inventory bought ahead of the ramp converts to revenue and positive operating cash flow, and whether gross margin reaches the 20%/$4B target on schedule.
Earnings
Q2 FY2026 revenue was a record $644.9M, above the $605M top end of guidance and up from $533.7M in Q1. Total non-GAAP gross margin was 16.7%, up from 16.5% in Q1, and non-GAAP EPS was $0.70. Operating cash flow was -$41.1M as inventory built.
| Metric | Q1 FY2026 | Q4 FY2025 | Q1 FY2025 | YoY |
|---|---|---|---|---|
| Revenue | $534M | $507M | $519M | +2.9% |
| Gross margin | 15.8% | 15.3% | 16.2% | -40bps |
| EBITDA | $31M | $30M | $32M | −4.1% |
| EPS | $-0.40 | $-0.07 | $-0.11 | +256.4% |
| Products revenue | $572.7M | $465.7M | n/a | — |
| Services revenue | $72.2M | $68.0M | n/a | — |
Momentum is building as AI-driven investment reshape[s] the semiconductor capital equipment landscape, driving increased volume and complexity in the systems and components our customers require.— James Xiao, Chief Executive Officer, 2026-08-03
Management tone: Management's tone shifted from broad WFE commentary to quantified customer forecasts, dated capacity milestones, and specific margin targets. On the Q2 call it used phrases like 'unprecedented visibility' and 'prepare ourselves on the bull case,' while still acknowledging supply-chain variability and timing gaps.
Management Guidance
For Q3 FY2026, management guided revenue of $700M–$750M and non-GAAP EPS of $0.83–$1.03. The company does not provide a formal full-year revenue guide. Management expects gross margin to move toward 17% through the rest of 2026, reiterates the 20% gross margin target at $4B revenue during 2027, and expects services to grow double digits in 2026 and 2027; the 2026 tax rate is expected to stay in the low 20% range.
Trajectory
The audited trailing quarters show revenue was essentially flat to down through most of FY2025 ($519M, $510M, $507M) before Q1 FY2026 rose to $534M. The company-reported Q2 call then jumped to $644.9M, up 20.8% sequentially, with Q3 guided at $700M–$750M. Non-GAAP total gross margin has ticked from 16.5% in Q1 to 16.7% in Q2; the Q1 10-Q GAAP figure was 15.8%.
The Model
The model projects FY+1 revenue of $2,468M and EBITDA of $185M (7.5% margin); FY+2 revenue of $3,020M and EBITDA of $308M (10.2% margin). Near-term is anchored by the company's Q3 FY2026 guide of $700M–$750M and the capacity staircase toward $3.5B by end-2026 and $4B by mid-2027. The FY+2 step is driven by services growth, continued product volume, and the 20% gross margin target at $4B revenue.
| Metric | FY2025 | Next FY (E) | Following FY (E) |
|---|---|---|---|
| Revenue | $2.1B | $2.5B | $3.0B |
| YoY Growth | — | +20.1% | +22.4% |
| EBITDA | −$31M | $185M | $308M |
| EBITDA Margin | -1.5% | 7.5% | 10.2% |
Projections are the median of 5 independent model runs. The model’s revenue sits 7.4% below analyst consensus.
For Q3 FY2026, management guided revenue of $700M–$750M and non-GAAP EPS of $0.83–$1.03. The company does not provide a formal full-year revenue guide. Management expects gross margin to move toward 17% through the rest of 2026, reiterates the 20% gross margin target at $4B revenue during 2027, and expects services to grow double digits in 2026 and 2027; the 2026 tax rate is expected to stay in the low 20% range.
What Could Go Right — and Wrong
- WFE lands at or above management's $190B–$220B 2027 planning range.
- Deposition and etch share of WFE rises from mid-30s in H1 2026 to high-30s in H2 2026, growing UCT's served market faster than overall WFE.
- Gross margin reaches the 17% FY2026 target and the 20%/$4B target during 2027 as factory utilization rises.
- Inventory converts to revenue and cash in H2 2026, returning operating cash flow to positive.
- Top-two customer concentration declines from the high-50s percent range as lithography/EUV customers expand.
- 2027 WFE falls toward the broader supply-chain estimate of $170B–$180B, leaving UCT overbuilt.
- Lam Research or Applied Materials reduces orders; together they were 58.5% of Q1 FY2026 revenue.
- Inventory bought ahead of demand becomes a cash and margin drag if the ramp stalls.
- Single-source and sole-source component shortages constrain shipments.
- Product gross margin stalls below its 20% target on unfavorable mix or regional shifts.
Looking Ahead
The next twelve months are framed by execution against the capacity staircase. Q3 FY2026 results test the latest quarterly revenue and EPS guide; after that, the main signals are gross margin toward 17%, inventory conversion in H2 2026, and a Southeast Asia greenfield decision for the $5B phase expected 'pretty quickly.' Services acceleration depends on U.S., Korean, and Taiwanese fab ramps, and new CFO Mike Keogh's first full reporting period will show his margin and capital framework.
- Q3 FY2026Q3 FY2026 results — Tests $700M–$750M revenue and $0.83–$1.03 EPS guide.
- H2 2026Inventory conversion — Does inventory convert to revenue/cash and does operating cash flow turn positive?
- End-2026Year-end capacity disclosure — Confirms roughly $3.5B annualized capacity ready.
- Coming quartersSingapore and Czech expansion — Capacity increases within existing footprint become visible.
- Mid-2027$4B run-rate capacity — Tests the $4B annualized capacity milestone.
- 2H 2028$5B run-rate capacity — Southeast Asia greenfield decision expected sooner.
Financials
Annual Summary
| Metric | FY2024 | FY2025 | TTM | YoY |
|---|---|---|---|---|
| Revenue | $2.1B | $2.1B | $2.1B | -2.1% |
| Gross Margin | 17.0% | 15.7% | 15.6% | 127bps |
| EBITDA | $167M | −$31M | $1.2B | -118.8% |
| EBITDA Margin | 8.0% | -1.5% | -1.6% | 951bps |
| Net Income | $24M | −$181M | −$194M | -864.6% |
| Free Cash Flow | $2M | $15M | $349M | — |
| Net Cash | — | — | — | — |
Key Ratios (Trailing)
- P/E TTM—
- EV/EBITDA TTM—
- EV/Revenue TTM—
- Price/FCF TTM—
- Gross Margin (TTM)15.6%
- EBITDA Margin (TTM)-1.6%
- Net Margin (TTM)-9.4%
- ROIC-7.9%
- SBC / Revenue0.7%
The Company
Ultra Clean Holdings designs and manufactures critical subsystems, components, parts, and modules for semiconductor and display capital equipment — gas delivery, fluid delivery, chemical delivery, precision robotics, process modules, and frame assemblies. Its Services segment cleans and coats process tool chamber parts and provides micro-contamination analysis. Those products and services feed deposition, etch, lithography, advanced packaging, and HBM-related tools, making UCT an indirect but broad supplier into AI-driven wafer fab equipment.
The company runs two segments: Products was $572.7M or about 89% of Q2 FY2026 revenue, and Services was $72.2M or about 11%. It operates manufacturing and engineering sites across California, Texas, Arizona, Israel, Oregon, China, Malaysia, Singapore, the United Kingdom, Thailand, the Philippines, and Czechia, with cleaning and analytical facilities in an overlapping set of regions. Management says the current footprint supports roughly $3B in annual revenue and can scale to $4B with modest incremental capital.
Business Segments
Competitive Landscape
The 10-K divides competitors by product line: Ichor and Fujikin in gas delivery systems; Foxsemicon, Jabil, VDL ETG, Celestica, and Benchmark in other critical subsystems; Swagelok, Parker Hannifin, Fujikin, and Watlow in gas delivery components; and KoMiCo, SHT, EnPro, Pentagon, Balazs, Eurofins, and SCAS in services and analytical work. Some customer-designated suppliers are also competitors, which management acknowledges creates procurement tension. UCT's stated edge is ramp readiness and availability of capacity in an upcycle.
- Ichor Systems, Inc.Named in 10-K as a gas delivery systems competitor; inferred as a direct competitor in gas delivery subsystems and fluid delivery; also a customer-designated competitor supplier risk.
- Fujikin IncorporatedNamed in 10-K as a gas delivery systems and gas delivery components competitor.
- Foxsemicon Integrated Technology Inc.Named in 10-K among other critical subsystems competitors.
- Named in 10-K among other critical subsystems competitors.
- Balazs (an Air Liquide company)Named in 10-K as an analytical services competitor.
Supply Chain
UCT sits between semiconductor OEMs and fabs: it supplies subsystems to equipment makers, then cleans and analyzes tool parts after wafers start. The supplied neighbor read-throughs corroborate WFE demand but do not include direct UCT commentary.
More on UCTT: Earnings recap