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United Microelectronics (UMC) — chart, structure and Closelook read

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Company snapshot — United Microelectronics

UMC in five paragraphs: what it makes and sells, where it sits in the Closelook stack, who it is priced against, why we track it, what we watch. Research diary, not advice.

What it does
United Microelectronics runs semiconductor wafer foundries, making chips to order for other companies rather than designing its own products. It offers circuit design support, mask tooling, wafer fabrication, and assembly and testing, serving communication, consumer electronics and computing customers. It is headquartered in Hsinchu City, Taiwan, and also runs operations across other parts of Asia, the United States and Europe.
Where it sits in the stack
United Microelectronics has no seat in our index. It sits in the foundry sleeve of the semiconductor universe, alongside contract manufacturers that fabricate chips designed by fabless customers rather than building their own products.
Who it is priced against
Closelook's peer group places it with the foundries — Taiwan Semiconductor Manufacturing, Intel, Samsung Electronics and Globalfoundries — the set the market prices contract chipmaking against.
Why Closelook tracks it
It carries no index seat and no Closelook score. The diary has quoted it once, in a dossier on the AI chip build-out, noting that automotive and industrial chip oversupply was squeezing margins at United Microelectronics and other legacy foundries.
What the diary watches
Whether oversupply in automotive and industrial chip demand keeps weighing on legacy foundry margins, which is what the diary watches for names like this one.

United Microelectronics (UMC) trades on US exchanges.

Written from the company’s public profile and Closelook’s own readings, 2026-09-17. Descriptive, refreshed with the registry; corrections welcome via the imprint. closelook.net is an investment research diary — market structure, index membership and scores are our own readings, not investment advice. Related: index compare · sector dispersion · scanner.

Signals for this name

Every Closelook reading that exists for UMC, from the same nightly bakes the boards use. Research diary readings, not advice.

Who it is priced against Foundries · 5 names with week and year-to-date

Peer group

Foundries

Curated competitor set — who the market prices this name against, not just who shares its sector.

Compared against UMC on the nightly bakes; the Peers tab ranks the cohort on the Closelook scores where it exists.

Weather around the name 3 macro readings: Money Temperature, Factor regime, Sovereign pressure

The weather around this name

Macro readings that apply by membership — the regime, the factor tape, the sector cell, the funding backdrop.

  • Money Temperature Composite 55/100 · S&P 500 fund at 58, above its 50- and 200-day averagesEight instruments scored on position, momentum, volume, volatility and fragility — the regime every name trades inside. Temperature lab → 2026-09-17
  • Factor regime Momentum leading — risk appetite buildingMomentum against low volatility (SPMO / SPLV): above its 50-day trend, 94th percentile of the window, +2.7% over 20 sessions. Factor regime → 2026-09-17
  • Sovereign pressure Index 0.00 · down 0.41 over 21 sessionsG7 long-end yields, 10s30s and the slope — the funding weather for every balance sheet on this site. Sovereign pressure → 2026-09-17

FAQ · from the current data · as of 2026-09-18

Quick answers

What is United Microelectronics (UMC)?

United Microelectronics trades as UMC on the US exchange in the Closelook research universe, as of the registry build of 2026-09-18.

Is UMC in a Closelook index?

Not currently — United Microelectronics is tracked in the Closelook research universe but is not a constituent of a Closelook functional index as of 2026-09-18.

Where does UMC trade against its moving averages?

Uptrend stack intact: Trades +19.8% vs the 50-day and +64.6% vs the 200-day average, 15.5% below the 52-week high and +258.8% off the 52-week low. Computed from daily closes. As of 2026-09-17 — a technical state from the nightly Closelook bake, not advice. The Technical tab carries the full row.

What does United Microelectronics do?

United Microelectronics runs semiconductor wafer foundries, making chips to order for other companies rather than designing its own products. It offers circuit design support, mask tooling, wafer fabrication, and assembly and testing, serving communication, consumer electronics and computing customers. It is headquartered in Hsinchu City, Taiwan, and also runs operations across other parts of Asia, the United States and Europe. Closelook's peer group places it with the foundries — Taiwan Semiconductor Manufacturing, Intel, Samsung Electronics and Globalfoundries — the set the market prices contract chipmaking against.

Where does United Microelectronics sit in the AI build-out?

United Microelectronics has no seat in our index. It sits in the foundry sleeve of the semiconductor universe, alongside contract manufacturers that fabricate chips designed by fabless customers rather than building their own products. It carries no index seat and no Closelook score. The diary has quoted it once, in a dossier on the AI chip build-out, noting that automotive and industrial chip oversupply was squeezing margins at United Microelectronics and other legacy foundries.

Where has Closelook written about United Microelectronics?

United Microelectronics appears in 1 Closelook piece, most recently Dossier: Who Owns the AI Chip Buildout? (2026-02-12). What Closelook said most recently: This creates a global oversupply of automotive/industrial chips, destroying margins for UMC, GlobalFoundries, and legacy fabs worldwide. (Dossier, 2026-02-12). The "Mentioned on Closelook" block on this page lists the long reads, the reference entries and the dailies that name it.

What does this page show?

A live price chart with SMA overlays and drawing tools for UMC, performance metrics, index-membership context and the Closelook structure read — an investment research diary view, not investment advice.

Mentioned on Closelook 1 piece · newest: Dossier, “Who Owns the AI Chip Buildout?” (2026-02-12)

Mentioned on Closelook

Where UMC appears in the diary — 1 piece, newest first. Every link is our own writing.

Go deeper

Long reads

  • Who Owns the AI Chip Buildout?Dossier · $39 · 12 Feb 2026This creates a global oversupply of automotive/industrial chips, destroying margins for UMC, GlobalFoundries, and legacy fabs worldwide.