How many suppliers does STMicroelectronics have?

wafergraph tracks 5 key suppliers for STMicroelectronics, across 5 countries.

Which of STMicroelectronics's suppliers are single-source risks?

TSMC, Soitec, Innoscience and Adeia Inc. hold monopoly or leader positions in their segments, which makes them the hardest suppliers for STMicroelectronics to replace.

What is STMicroelectronics's supply-chain criticality score?

STMicroelectronics scores 68/100 on wafergraph's chokepoint criticality index, with 235 tracked companies downstream.

STMicroelectronics supply chain risk

As of 2026-09-05, STMicroelectronics depends on 5 tracked suppliers headquartered in 5 countries (1 of them in Taiwan). 4 of those suppliers hold a monopoly or leader position in their own segment, led by TSMC, Soitec and Innoscience. STMicroelectronics itself carries a supply-chain criticality score of 68/100, with 235 tracked companies downstream of it.

Data as of 2026-09-05 · suppliers are the curated key_supplier edges in the wafergraph dataset (researched or segment-inferred — see /methodology) · criticality is the graph-derived chokepoint score, 0–100

Dominant and single-source suppliers

TSMC — leader in Pure-Play Foundry, Taiwan criticality 81/100
Soitec — leader in Substrates, France criticality 84/100
Innoscience — leader in Integrated Device Manufacturer, China criticality 81/100
Adeia Inc. — leader in Semiconductor IP Licensing, United States criticality 83/100

A monopoly or leader supplier is the hardest to replace. These are the edges to watch first.

Suppliers by country

Taiwan — 1 supplier (20%)
France — 1 supplier (20%)
China — 1 supplier (20%)
United States — 1 supplier (20%)
Japan — 1 supplier (20%)

All 5 tracked suppliers

Supplier	Segment	Position	Country	Criticality
TSMC	Pure-Play Foundry	leader	Taiwan	81/100
Soitec	Substrates	leader	France	84/100
Innoscience	Integrated Device Manufacturer	leader	China	81/100
Adeia Inc.	Semiconductor IP Licensing	leader	United States	83/100
ROHM	Integrated Device Manufacturer	major	Japan	68/100

Downstream exposure

Criticality score: 68/100
Companies downstream of STMicroelectronics: 235
Tracked market cap downstream (priced companies only): $34.64T across 149 priced companies

Cite as: wafergraph, “STMicroelectronics supply chain risk — 5 suppliers, single-source exposure & criticality”, https://wafergraph.com/supply-chain-risk/stmicro (data as of 2026-09-05).

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