Data Study · Jun 21, 2026
The Biggest Chokepoints in the Semiconductor & AI Supply Chain (2026)
TSMC is the single biggest chokepoint in the semiconductor & AI supply chain: 83 tracked companies depend on it as a key supplier — more than any other firm. It is followed by ASE Technology (71), NVIDIA (45), and Broadcom and Vertiv (43 each). A chokepoint here is measured by supplier in-degree: how many of the 531 tracked companies list a firm among their key suppliers, computed directly from the wafergraph supplier graph. Edge coverage is partial, so every count is a lower bound. Data as of 2026-06-19.
The 25 biggest supply-chain chokepoints
Every firm ranked by supplier in-degree — the number of tracked companies that list it among their key suppliers. The higher the count, the more of the chain depends on that single node. Click any company or segment to open its data hub.
Source: wafergraph supplier-edge graph (key_suppliers). In-degree = number of tracked companies that list the firm as a key supplier. Edge coverage is partial, so counts are a lower bound. Data as of 2026-06-19.
Where the chokepoints cluster
The most-depended-on firms group into a few distinct clusters of the chain. Foundry — TSMC (83), SMIC (28), Hua Hong Semiconductor (27) — and advanced packaging / OSAT — ASE Technology (71), JCET Group (29) — are the classic manufacturing chokepoints. AI silicon designers are the second cluster: NVIDIA (45), Broadcom (43), AMD (22), Marvell Technology (15). Notably, a fourth cluster sits in AI-datacenter power & cooling — Vertiv (43), Schneider Electric (41), Eaton (40), Delta Electronics (40) — each depended on by roughly forty companies, an under-appreciated chokepoint cluster that the in-degree data surfaces alongside the silicon supply chain.
Cluster membership reflects each firm's primary segment in the wafergraph dataset; the counts are the same supplier in-degree as the table above. As of 2026-06-19.
The top chokepoint in each segment
The single most-depended-on firm in each of the 12 segments of the chain, by supplier in-degree among the firms whose primary segment is that one.
| Segment | Top chokepoint | Companies depending on it |
|---|---|---|
| Materials | Air Liquide | 8 |
| Equipment (Front End) | ASML | 9 |
| Equipment (Back End) | ASMPT | 6 |
| EDA & IP | Cadence Design Systems | 9 |
| Design (Fabless) | NVIDIA | 45 |
| IDM | Intel | 13 |
| Foundry | TSMC | 83 |
| Memory | SK hynix | 9 |
| Analog, Power, RF | Cirrus Logic | 1 |
| OSAT | ASE Technology | 71 |
| Distribution & Misc | Coherent | 20 |
| AI & Data Center | Vertiv | 43 |
Source: wafergraph supplier-edge graph. Firms assigned to their primary (first-listed) segment. As of 2026-06-19.
How a chokepoint is measured
A supply-chain chokepoint here is measured by supplier in-degree: the number of tracked companies that list a firm among their key suppliers in the wafergraph dataset. The key_suppliers fields are the directed edges of the supplier↔customer graph, so in-degree counts how many companies depend on a given firm. Edge coverage is partial — not every real supplier relationship is recorded — so every count is a lower bound on true dependence, not an exhaustive census. The figures reflect the tracked subset of the chain and are reproducible from the committed dataset. Data as of 2026-06-19.
This study counts dependence (graph in-degree). Named market-share estimates (e.g. foundry, HBM, EUV share) are covered separately on the per-segment market-share pages. Reproducible from the committed dataset (site/scripts/feature_chokepoints.mjs).
FAQ
- 1What is the biggest chokepoint in the semiconductor supply chain?TSMC — 83 tracked companies depend on it as a key supplier, the highest supplier in-degree in the wafergraph dataset. ASE Technology (71) and NVIDIA (45) are next.
- 2Which company do the most semiconductor firms depend on?TSMC. 83 of the 531 tracked companies list it among their key suppliers — more than any other firm in the chain.
- 3Are AI-datacenter suppliers supply-chain chokepoints?Yes. AI-datacenter power & cooling firms form a distinct chokepoint cluster: Vertiv (43), Schneider Electric (41), Eaton (40), Delta Electronics (40) — each depended on by roughly forty companies, alongside the foundry and AI-silicon chokepoints.
- 4How is a supply-chain chokepoint measured?By supplier in-degree — the number of tracked companies that list a firm among their key suppliers in the wafergraph supplier graph. Edge coverage is partial, so counts are a lower bound on true dependence.
Answers computed from the wafergraph dataset; data as of 2026-06-19.