Networking 网络互联 네트워킹
Interconnect, switching, and high-speed data-movement silicon linking compute clusters.
Why AI demand reaches this layer · 需求为什么传导到这里 · 수요가 여기까지 오는 이유
A frontier training run spans tens of thousands of accelerators that must behave as one machine. That produces a distinct hierarchy: links inside the package, scale-up inside the rack, scale-out between racks, plus the switches and NICs that carry it. This is a first-class industry, not a footnote under semiconductors.
一次前沿训练要让几万块加速器表现得像一台机器。由此形成一套独立的层级：封装内互连、机架内 scale-up、机架间 scale-out，以及承载它们的交换机和网卡。这是一个一级产业，不是半导体下面的一个脚注。
최전선 학습은 수만 개 가속기가 한 대처럼 움직여야 한다. 그래서 패키지 안 링크, 랙 안 스케일업, 랙 사이 스케일아웃, 그리고 이를 실어 나르는 스위치와 NIC라는 별도 계층이 생긴다. 반도체 아래 각주가 아니라 1차 산업이다.
Where the chokepoint sits · 瓶颈在哪 · 병목은 어디인가
Cluster scale is increasingly limited by what the fabric can sustain rather than by how many accelerators can be bought.
集群规模的上限，越来越取决于网络能撑到多大，而不是能买到多少加速器。
클러스터 규모는 가속기를 얼마나 살 수 있느냐보다, 패브릭이 버틸 수 있느냐에 점점 더 묶인다.
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
- MRVLBeneficiary · 受益 · 수혜
Data-center interconnect and networking silicon.
- ANETBeneficiary · 受益 · 수혜
Datacenter switching systems used in large AI cluster fabrics.
- AVGOBeneficiary · 受益 · 수혜
Merchant switch silicon and datacenter networking components.
- ALABBeneficiary · 受益 · 수혜
Connectivity semiconductors for accelerator and memory interconnect.
- CRDOBeneficiary · 受益 · 수혜
High-speed connectivity products for datacenter interconnect.
- CSCONeutral · 中性 · 중립
Enterprise and service-provider networking broadly; AI datacenter fabric is one segment.
- APHBeneficiary · 受益 · 수혜
High-speed interconnect, cable assemblies, and connectors for datacenter systems.
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 inAVGOForm 13F-HR for the period ending 2026-06-30, filed 2026-08-14 · SEC filing
- Appaloosa Managementreported a position inAVGOForm 13F-HR for the period ending 2026-06-30, filed 2026-08-14 · SEC filing
- Bridgewater Associatesreported a position inAVGOForm 13F-HR for the period ending 2026-06-30, filed 2026-08-14 · SEC filing
- Coatue Managementreported a position inAVGOForm 13F-HR for the period ending 2026-06-30, filed 2026-08-14 · SEC filing
- Fundstrat Capitalreported a position inAVGOForm 13F-HR for the period ending 2026-06-30, filed 2026-08-13 · SEC filing
- Tiger Global Managementreported a position inAVGOForm 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.