Applied Materials, Inc. (AMAT): Who It Depends On
Applied Materials builds the deposition, etch, ion implantation, and inspection tools used to manufacture nearly every advanced chip in the world, but it doesn't build every part of its own machines — it depends on a concentrated group of subsystem specialists for gas delivery, RF power, and vacuum hardware, several of which disclose Applied Materials as one of their own largest customers. On the revenue side, Applied Materials sells into a small circle of the world's largest chipmakers and foundries, with a geographically volatile and export-control-sensitive China business that has swung from a peak of 45% of quarterly revenue down to under 30% within about two years.
Supply-chain dependency
Companies AMAT relies on to design, manufacture, package, and assemble its hardware.
Builds the gas and chemical/fluid delivery subsystems used inside Applied Materials' etch and deposition tools. Ichor's own 10-K discloses that Applied Materials and Lam Research together made up 76% of its 2025 sales, making Ichor effectively an extension of Applied Materials' own manufacturing line.
Supplies the RF and plasma power-delivery generators used to strike and sustain plasmas inside Applied Materials' etch, deposition, and ion-implant chambers. Advanced Energy's own 10-K discloses Applied Materials alone as roughly 26% of its fiscal 2024 revenue.
Manufactures the precision chambers, frames, and gas/chemical delivery modules that Applied Materials assembles into finished systems rather than building in-house. Applied Materials and Lam Research together accounted for 54.5% of Ultra Clean's fiscal 2024 revenue, with each individually above the 10% disclosure threshold.
A broad "surround the wafer" subsystem supplier providing RF/ microwave power, vacuum and pressure control, and gas-delivery hardware used across Applied Materials' etch, deposition, and inspection tool lines.
Supplies specialty materials, filtration, and contamination-control components used throughout Applied Materials' tools; Entegris has publicly noted receiving a Supplier Excellence Award in ESG from Applied Materials.
The dominant global supplier of the high-precision vacuum valves used to isolate and control chamber environments in semiconductor process equipment. Trades only on the Swiss stock exchange (SIX), with no US-listed ADR or proper US ticker.
Edwards Vacuum, an Atlas Copco company, supplies the vacuum pump systems that maintain the near-total-vacuum environments Applied Materials' chambers require. Atlas Copco trades primarily in Stockholm; its US shares (ATLKY/ATLCY) are thin, unsponsored OTC ADRs, with no proper US-listed ticker.
Customer concentration
Companies that make up an outsized share of AMAT's revenue - who AMAT relies on to buy from it.
The world's largest leading-edge foundry and, by industry consensus, Applied Materials' single largest customer for advanced deposition, etch, and inspection tools. Applied Materials' own 10-K discloses two unnamed customers at 19% and 15% of fiscal 2025 revenue without naming them, but TSMC's capex scale makes it the widely assumed largest.
A major buyer of Applied Materials tools for both its foundry and memory businesses; press coverage directly ties Applied Materials' stock moves to Samsung's capex announcements. Trades primarily on the Korea Exchange, with no proper US-listed ticker.
A major memory maker and buyer of Applied Materials' deposition and etch tools for DRAM and HBM capacity expansion, grouped alongside Samsung by analysts as a key driver of chip-tool demand. Trades primarily on the Korea Exchange, with no proper US-listed ticker.
A longstanding IDM customer buying Applied Materials equipment to build out both its own leading-edge fabs and its newer Intel Foundry business for external customers.
A recurring large buyer of Applied Materials' deposition and etch systems for DRAM and NAND capacity expansion in the US and abroad.
Mainland China's largest foundry and the subject of a $252.5 million US Commerce Department fine against Applied Materials in early 2026 for illegally shipping ion-implant equipment to SMIC through a South Korean subsidiary after SMIC's 2020 Entity List designation. Formally delisted from the NYSE in 2019 and now trades only OTC, with no proper US-listed ticker.
Not a single company — the broader group of mainland Chinese foundries and memory makers that drove Applied Materials' China revenue to a peak of 45% of quarterly sales in early fiscal 2024 before falling to roughly 28-29% of fiscal 2025 revenue as successive rounds of US export controls took effect.
The percentages shown are editorial estimates based on public research (company disclosures, earnings commentary, and industry reporting) meant to illustrate relative reliance, not precise or audited figures. Companies without a proper, reliably tradable ticker on this site are shown without stock/earnings links. This is not financial advice.