Foundry 晶圆制造 파운드리
Contract wafer fabrication and advanced packaging that turn accelerator designs into silicon.
Why AI demand reaches this layer · 需求为什么传导到这里 · 수요가 여기까지 오는 이유
A design is not a chip. Between the two sits contract fabrication and the advanced packaging that bonds HBM stacks to logic — which is why accelerator shipment volume has repeatedly been set by packaging capacity rather than by wafer starts or by how many chips anyone wanted to sell.
设计不等于芯片。两者之间隔着代工制造，以及把 HBM 堆叠与逻辑芯片键合的先进封装 —— 这正是为什么加速器的出货量多次由封装产能决定，而不是由投片量、也不是由谁想卖多少颗决定。
설계는 칩이 아니다. 사이에는 위탁 생산과 HBM 스택을 로직에 붙이는 첨단 패키징이 있다. 그래서 가속기 출하량은 누가 얼마나 팔고 싶었는지가 아니라, 패키징 용량이 반복해서 정했다.
Where the chokepoint sits · 瓶颈在哪 · 병목은 어디인가
Leading-edge capacity is concentrated in very few fabs, and a new one takes years and tens of billions. This is the narrowest point in the entire chain.
最先进制程的产能集中在极少数晶圆厂，而新建一座需要数年和数百亿美元。这是整条链上最窄的一点。
선단 공정 용량은 극소수 팹에 몰려 있고, 새 팹은 수년과 수백억 달러가 든다. 체인에서 가장 좁은 지점이다.
A structural observation about supplier concentration and lead times — not a view on any security. 这是关于供应商集中度与交期的结构性观察，不是对任何标的的看法. 공급사 집중도와 납기에 대한 구조 관찰이지, 어떤 증권에 대한 의견이 아닙니다.
Companies in this layer · 本层级的公司 · 이 레이어의 기업
- TSMBeneficiary · 受益 · 수혜
Contract logic fabrication and advanced packaging for merchant and custom accelerators.
- GFSBeneficiary · 受益 · 수혜
Contract wafer fabrication at mature and specialty nodes.
- UMCBeneficiary · 受益 · 수혜
Contract wafer fabrication at mature and specialty nodes.
- AMKRBeneficiary · 受益 · 수혜
Outsourced semiconductor assembly and test, including advanced packaging.
- ASXBeneficiary · 受益 · 수혜
Outsourced semiconductor assembly, test, and advanced packaging services.
Public 13F filings citing these securities · 引用这些标的的公开 13F 申报 · 이들 증권을 인용한 공개 13F
Research context, not a recommendation. These are facts on file with the SEC; the classification that puts a security in this layer is ours, and the filer made no such claim.
供研究参考，不构成任何推荐。以下是已向 SEC 存档的事实；把某个标的归入本层级是我们的分类， 申报人并未作出这样的表述。
- ARK Investment Managementreported a position inTSMForm 13F-HR for the period ending 2026-06-30, filed 2026-08-14 · SEC filing
- Appaloosa Managementreported a position inTSMForm 13F-HR for the period ending 2026-06-30, filed 2026-08-14 · SEC filing
- Bridgewater Associatesreported a position inTSMForm 13F-HR for the period ending 2026-06-30, filed 2026-08-14 · SEC filing
- Coatue Managementreported a position inTSMForm 13F-HR for the period ending 2026-06-30, filed 2026-08-14 · SEC filing
- Duquesne Family Officereported a position inTSMForm 13F-HR for the period ending 2026-06-30, filed 2026-08-14 · SEC filing
- Tiger Global Managementreported a position inTSMForm 13F-HR for the period ending 2026-06-30, filed 2026-08-14 · SEC filing
- Viking Global Investorsreported a position inTSMForm 13F-HR for the period ending 2026-06-30, filed 2026-08-14 · SEC filing
Rows below are public SEC Form 13F-HR filings, reported by the filing entity for the period shown and filed later — they are never current holdings. Form 13F covers long US equity positions only: it excludes short positions, cash, non-US holdings and most derivatives, and a reported position may have been sold since. Assigning a ticker to a layer is XingAI's classification, not the filer's. Nothing here is a recommendation, and an institution reporting a position is not a reason to take one.
下列条目来自 SEC 公开的 Form 13F-HR 申报，由申报主体就所示期间申报、并在其后提交 —— 它们不是当前持仓。Form 13F 仅覆盖美股多头头寸：不含空头、现金、非美资产和大多数衍生品，且申报的头寸可能已被卖出。把某个标的归入某一层级是 XingAI 的分类，不是申报人的。此处没有任何推荐，机构申报持有某标的也不构成你持有它的理由。
Same track · 同一赛道
Descriptive positioning only. `stance` says whether a company's business is exposed to a layer, never whether to buy it. Layers with no exposure are not recommendations to add any.