United Microelectronics (UMC) diligence pack

What they do

• Taiwan's second foundry, strong in mature and specialty nodes.
• Primary segment: Foundry / Pure-Play Foundry.
• Key products in the dataset: 28nm/22nm processes.
• Market position in that segment: major.

Role in the chain

• United Microelectronics (UMC) is a market major in Foundry (Pure-Play Foundry), headquartered in Taiwan. Taiwan's second foundry, strong in mature and specialty nodes.
• Ask: On the step you actually buy, is this company the process owner, a second source, or a distributor? The segment label is not a substitute for that answer.

Counterparties on the graph

• Tracked suppliers: 24. Tracked customers: 15.
• Named suppliers (first 8): ASML, Adeia Inc., Air Liquide, Applied Materials, ASM International, JSR, KLA, Lam Research.
• Named customers (first 8): Broadcom, MediaTek, Novatek Microelectronics, NVIDIA, Phison Electronics, Qualcomm, Texas Instruments, Allegro MicroSystems.
• Ask: Which of those edges are in a filing or a primary-source quote, and which are segment-inferred? Do not treat the two as the same fact.

Concentration and replaceability

Operator section

• 16 of the tracked suppliers are a monopoly or leader: ASML, Adeia Inc., Air Liquide, Applied Materials, ASM International, JSR.
• Ask: If the named monopoly or leader supplier stopped shipping, is there a qualified second source on that process step? If the dataset does not name one, do not assume one exists.

Geography and jurisdiction

• Headquarters country in the dataset: Taiwan.
• Ask: Where do the fabs, plants or logistics nodes actually sit, versus the HQ country on this record? This dataset records headquarters, not every site.

Public-markets facts (only what is on the record)

Investor section

• Public company, ticker NYSE:UMC. A live market cap is on the company profile; this pack does not restate it as a diligence conclusion.
• Ask: What does the latest reported period (if any) say about capacity, backlog and customer concentration? If the company page has no revenue figure, that number is not in this dataset.

Operator checklist

Operator section

• Ask: The dataset records 24 tracked suppliers for United Microelectronics (UMC). Which of those edges are researched (named in a filing or primary source) versus segment-inferred, and what happens if one of them stops shipping?
• Ask: 16 of United Microelectronics (UMC)'s tracked suppliers are a monopoly or leader (including ASML, Adeia Inc., Air Liquide, Applied Materials). Which of those are actually single-source for the process step you care about?
• Ask: The dataset names 15 tracked customers for United Microelectronics (UMC). How concentrated is demand among those names, and which of them have a documented second source in this graph?
• Ask: United Microelectronics (UMC) is headquartered in Taiwan. What jurisdiction, export-control or logistics risk sits at that HQ, versus at the fabs or plants the filings actually name?
• Ask: United Microelectronics (UMC) trades as NYSE:UMC. What does the latest reported period say about capacity and backlog versus the graph position above?

Investor checklist

Investor section

• Ask: Is the graph position (monopoly / leader / major / challenger / niche) the thing you are underwriting, or a product line the one-liner does not cover?
• Ask: Which named customers in this graph could switch, and which named suppliers could not be replaced in a year? Count only names this dataset actually lists.
• Ask: What is not in this dataset — site-level capacity, contract terms, revenue split by customer — that you still need from a filing or a call?