MKS Inc. (MKSI) | The Buildout — AI Infrastructure
The Verdict
MKS sells the equipment, subsystems and chemistry that semiconductor and circuit-board factories run on. Its vacuum and pressure controls, gas delivery, RF and microwave power supplies, plasma generators, lasers, optics and photonics sit inside the deposition, etch, lithography, metrology and inspection tools that chip makers buy. Its plating and layer-bonding chemistry and chemistry equipment build the advanced printed circuit boards, package substrates and wafers that AI servers and optical modules need. MKS does not sell chips or models — it sells the picks and shovels underneath the firms that do.
| Market Cap | — |
| Revenue (TTM) | $4.3B |
| Revenue Growth | +16.3% |
| EBITDA Margin (TTM) | 24.4% |
| Net Debt | $3.6B |
| Earnings Beats | 7 of 7 |
| P/E (TTM) | — |
| EV/EBITDA (TTM) | — |
What We Like
- Semiconductor revenue has accelerated for three straight prints — 13% year over year in Q1 2026, 28% in Q2, and a Q3 guide implying over 50% — and management says deposition and etch are running significantly above that average.
- MKS says it is exposed to 85% of wafer fab equipment spending, so it participates across the whole capex line rather than in one tool type or one tool step.
- Operating leverage is showing up: operating margin rose from 21.8% in Q1 2026 to 25.6% in Q2 and is guided to 26.3%, on operating expenses management says will grow much slower than revenue.
- Chemistry attaches behind installed equipment at 20–40% of equipment dollars historically, arriving 24–30 months later. MSD gross margin was 52.2% in Q1 2026 against VSD's 42.9%, so the mix flip is worth real margin when it comes.
- Net leverage fell from 3.5x to 3.0x, down one full turn year over year, and free cash flow stepped from $29M in Q1 2026 to $188M in Q2, about 15% of revenue.
What We’re Watching
- Gross margin. Q2's 47.6% included about 100 bps of one-time tariff and duty refunds, putting the underlying figure near 46.6%, and management guides Q3 back to 47%.
- The mix headwind. Management says mix stays unfavorable as long as the VSD and chemistry-equipment ramps run, with 50–80 bps per quarter of factory startup cost flowing through cost of goods sold.
- Competition. Advanced Energy Industries says it is better positioned to gain share than at any other time in its history, against MKS's claimed RF-power share leadership; SCHMID is doubling China chemistry-equipment capacity, online Q4 2027.
- The consumer offset. Flex-PCB drilling is mostly smartphones and peripherals, is seasonally down in Q3, and peers describe the consumer backdrop as weak.
The thesis is strengthening on demand and execution. Revenue has accelerated through three prints, the Q3 semiconductor guide is above 50% year over year, management met or exceeded its own guidance in two consecutive quarters, and the Malaysia plant opened ahead of schedule. The weakness is margin, and it is a deliberate choice: MKS is growing through lower-margin chemistry equipment to install the base that higher-margin chemistry attaches to 24–30 months later, so gross margin sits near 47% while operating margin carries the leverage. The open question is whether that attach ratio — which management has already re-based to the lower end of its historical 20–40% of equipment dollars — converts into enough chemistry margin to lift the company once the equipment ramp peaks.
Earnings Beat
MKS reported Q2 2026 revenue of $1.25 billion, up 16% sequentially and 28% year over year. Gross margin was 47.7%, a figure management said included about 100 basis points of one-time tariff and duty refunds. Electronics & Packaging was the standout, at $381 million against a $350 million guide. Diluted EPS was $3.30, up 86% year over year as stated.
| Metric | Q2 FY2026 | Q1 FY2026 | Q2 FY2025 | YoY |
|---|---|---|---|---|
| Revenue | $1.2B | $1.1B | $973M | +28.3% |
| Gross margin | 47.7% | 41.2% | 46.6% | +110bps |
| EBITDA | $337M | $258M | $222M | +51.8% |
| EPS | $2.41 | $1.18 | $0.92 | +161.7% |
| AI share of chemistry revenue | 15–20% | ~15% | n/a | — |
| Net leverage | 3.0x | 3.5x | 4.0x | down 1.0 turn |
In chemistry equipment, we said last year that order activity had been elevated for multiple quarters. It has moved another level above that. Our chemistry equipment demand is easily the strongest it has ever been, supported by AI server investments, including optical modules. Our visibility now extends through 2027.— John Lee, President and CEO, 2026-08-06
Management tone: The Q2 2026 call showed more confidence than Q1 on nearly every axis management discusses. Chemistry-equipment framing moved from "very robust" in Q1 to "easily the strongest it has ever been." The capacity ceiling was raised rather than reaffirmed: an analyst question anchored on $180–200 billion of WFE was answered by lifting it to $200–250 billion. Management also volunteered that its Q2 gross-margin beat included about 100 bps of one-time items, and quantified a 50–80 bps per quarter factory startup drag. It declined to rank 2027 growth between semiconductor and electronics & packaging, saying "I don't think we know."
Management Guidance
For Q3 2026, management guided revenue to $1.35 billion ±$40 million, with semiconductor at $630 million ±$15 million (over 50% year over year), electronics & packaging at $385 million ±$15 million (over 30%), and specialty industrial at $335 million ±$10 million. Gross margin is guided to 47% ±100 basis points, including 50–80 basis points per quarter of factory startup cost flowing through cost of goods sold, not operating expenses. Operating expenses are guided to $280 million ±$5 million, adjusted EBITDA to $395 million ±$28 million, and EPS to $3.58 ±$0.31. Full-year 2026 CapEx is reaffirmed at 4–5% of revenue, and the full-year tax rate is guided to the lower end of 18–20%. Management also said $100 million quarterly term-loan prepayments continue, with additional payments being considered in Q3 and Q4.
Trajectory
Revenue has risen for five straight quarters, from $973 million in the June 2025 quarter to $1.25 billion in June 2026, and the sequential step-up widened sharply in the latest quarter. The mix has shifted toward the fastest-growing pools: semiconductor revenue grew 13% year over year in Q1 2026, 28% in Q2, and is guided above 50% in Q3; electronics & packaging grew 44% year over year in Q2, driven by chemistry equipment; and specialty industrial reached its highest revenue since 2023. Gross margin is the pressure point — held near 47% by mix and by 50–80 basis points per quarter of factory startup cost — while operating margin expands from 21.8% in Q1 to 25.6% in Q2 and a guided 26.3% in Q3, because operating expenses are growing much slower than revenue.
The Model
The model projects FY+1 revenue of $5,131 million and EBITDA of $1,385 million, a 27.0% margin. For FY+2 it projects revenue of $6,500 million and EBITDA of $1,944 million, a 29.9% margin. The near term is anchored on the guided semiconductor acceleration and on the Malaysia supercenter, which management says was built for 2027 demand rather than 2026. The FY+2 step assumes the chemistry attach behind equipment shipped in 2026–2028 converts at higher margin, and that the Guangzhou equipment factory, online in Q3 2027, lifts chemistry-equipment capacity.
| Metric | FY2025 | Next FY (E) | Following FY (E) |
|---|---|---|---|
| Revenue | $3.9B | $5.1B | $6.5B |
| YoY Growth | — | +30.6% | +26.7% |
| EBITDA | $883M | $1.4B | $1.9B |
| EBITDA Margin | 22.5% | 27.0% | 29.9% |
Projections are the median of 5 independent model runs. The model’s revenue sits 13.3% above analyst consensus.
For Q3 2026, management guided revenue to $1.35 billion ±$40 million, with semiconductor at $630 million ±$15 million (over 50% year over year), electronics & packaging at $385 million ±$15 million (over 30%), and specialty industrial at $335 million ±$10 million. Gross margin is guided to 47% ±100 basis points, including 50–80 basis points per quarter of factory startup cost flowing through cost of goods sold, not operating expenses. Operating expenses are guided to $280 million ±$5 million, adjusted EBITDA to $395 million ±$28 million, and EPS to $3.58 ±$0.31. Full-year 2026 CapEx is reaffirmed at 4–5% of revenue, and the full-year tax rate is guided to the lower end of 18–20%. Management also said $100 million quarterly term-loan prepayments continue, with additional payments being considered in Q3 and Q4.
What Could Go Right — and Wrong
- Semiconductor revenue keeps accelerating past the over-50% Q3 guide, with deposition and etch growing faster than the company average.
- Chemistry revenue growth stays above equipment growth, so the mix that has held gross margin near 47% starts to reverse.
- The 24–30 month chemistry attach behind equipment shipped in 2026–2028 converts at or above the low end of the historical 20–40% of equipment dollars.
- Malaysia and Guangzhou come online on schedule and remove MKS as its own capacity constraint.
- NAND greenfield fabs arrive in late 2027 / early 2028, lifting RF power content per tool.
- The mix headwind lasts as long as the chemistry-equipment ramp, pushing the higher-margin chemistry payoff further out.
- Clean-room and customer-fab capacity slips, and the guide misses on conversion rather than on demand.
- Advanced Energy Industries or SCHMID takes share in the RF power or chemistry-equipment products MKS has invested behind.
- Consumer-electronics weakness deepens and flex-PCB drilling can no longer be offset by AI chemistry.
- A sole-sourced input — the 10-K names "certain metals and electronic components" — interrupts supply while MKS is shipping at maximum rate.
Looking Ahead
Over the next 12 months the story is a race between an accelerating semiconductor cycle and a gross margin management is deliberately holding flat. Q3 2026 is where the ~100 bps one-time tariff benefit rolls off, so a 47% print tests whether underlying margin is stable. the Guangzhou equipment factory online in Q3 2027; and the NAND greenfield window in late 2027 / early 2028. Management declined to rank 2027 growth between semiconductor and electronics & packaging.
- Q3 2026 (expected early November 2026)Q3 2026 results — Tests whether the over-50% semiconductor guide holds and margin clears 47%.
- December 14, 2026Investor Day — Management says more color on the 47%-plus gross-margin goal is coming.
- Q3 and Q4 2026Term-loan prepayments — Additional payments beyond $100M per quarter are being considered.
- Q3 2027Guangzhou factory online — Doubles chemistry-equipment capacity, easing the current constraint.
- Late 2027 / early 2028NAND greenfield fabs — Bigger than upgrades for RF power content, MKS says.
Financials
Annual Summary
| Metric | FY2024 | FY2025 | TTM | YoY |
|---|---|---|---|---|
| Revenue | $3.6B | $3.9B | $4.3B | +9.6% |
| Gross Margin | 47.6% | 45.3% | 44.1% | 230bps |
| EBITDA | $845M | $883M | $1.1B | +4.5% |
| EBITDA Margin | 23.6% | 22.5% | 24.4% | 110bps |
| Net Income | $191M | $295M | $440M | +54.5% |
| Free Cash Flow | $377M | $496M | $454M | — |
| Net Cash | — | — | — | — |
Key Ratios (Trailing)
- P/E TTM—
- EV/EBITDA TTM—
- EV/Revenue TTM—
- Price/FCF TTM—
- Gross Margin (TTM)44.1%
- EBITDA Margin (TTM)24.4%
- Net Margin (TTM)10.1%
- ROIC8.6%
- FCF Conversion42.8%
- SBC / Revenue1.1%
The Company
MKS sells the equipment, subsystems and chemistry that semiconductor and circuit-board factories run on. Its vacuum and pressure controls, gas and materials delivery, RF and microwave power, plasma and reactive-gas generators, lasers, optics and photonics sit inside the deposition, etch, lithography, metrology and inspection tools that chip makers buy. Its plating and layer-bonding chemistry and chemistry equipment build advanced printed circuit boards, package substrates and wafers — the 10-K names "server and data centers, including infrastructure related to AI" as a target application for that chemistry.
MKS operates 20 named manufacturing sites, per the FY2025 10-K facility table, spread across China, Germany, the United States, India, South Korea, Mexico, Romania and Slovenia. Guangzhou, China (704,000 sq ft) and Yangzhou, China (455,000 sq ft) are the largest in that table. International sales were 82% of total revenue in Q1 2026, with China the largest single country at 23%. The footprint is still being added to: a Malaysia supercenter opened in June 2026 with over 1,000 jobs, a Guangzhou chemistry-equipment factory is being doubled and comes online in Q3 2027, and a German factory has been switched back on as a bridge.
Business Segments
Competitive Landscape
The 10-K names competitors at every layer of the product map. In vacuum and materials delivery it lists Advanced Energy Industries, Inficon, Hitachi, Horiba, Brooks Instrument and VAT; in lasers and photonics it lists Trumpf, Lumentum, IPG Photonics, Coherent, Excelitas, Jenoptik and others; in chemistry it lists Element Solutions, Qnity, Uyemura, JCU and Okuno; and in plating equipment it lists Schmid, Process Automation International and others. Management describes MKS as holding the highest overall market share across PCB manufacturing steps while not leading every step, and claims segment share leadership in high-aspect-ratio dielectric etch. Two competitors push against specific positions: Advanced Energy says it is better positioned to gain share than at any other time in its history, and Lumentum is actively selling ultrafast lasers into the AI-PCB via-drilling niche MKS is highlighting.
- Advanced Energy IndustriesNamed in the 10-K as a VSD competitor in power solutions, plasma and reactive gas, and sensing. Management says the company is better positioned to gain share than at any other time in its history, against MKS's claimed RF-power share leadership in high-aspect-ratio dielectric etch.
- InficonNamed in the 10-K as a VSD competitor in pressure and vacuum control. Named in filings; not discussed.
- Named in the 10-K as a PSD laser competitor. Reports increased adoption of its ultrafast lasers for high-density PCB via drilling supporting advanced AI XPU boards and 1.6T optical modules — the same niche MKS highlights.
- Element SolutionsNamed in the 10-K as an MSD chemistry competitor. Reported Q2 2026 organic sales up 15% and said it does not expect the typical seasonal smartphone ramp given what it called a very weak consumer electronics backdrop.
- Schmid GroupNamed in the 10-K as an MSD plating-equipment competitor. Is doubling its China chemistry-equipment capacity, operational Q4 2027, one quarter after MKS's Guangzhou doubling comes online.
Supply Chain
MKS sits underneath the semiconductor equipment makers, whose tools carry its subsystems, and alongside PCB and substrate makers, whose fabs consume its chemistry. No neighbor transcript names MKS directly, so the customer rows below are inferred from product logic.
More on MKSI: Earnings recap