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Home/Chips & Networking/Bottlenecks/Networking
US · Chips & Networking

AI Networking (Switches & Retimers)

Every additional GPU in a training domain multiplies switch ports and retimers. Ethernet vs proprietary fabrics decides who captures it.

SerDes→Switch ASIC→Retimer / AEC→Cluster
62
Tightness score ⓘ
#32 of 56
■ Stable
Supply concentration4
Lead time2
Capex intensity3
Geopolitical exposure2
Pricing power4
Lead time
6–9 mo
Theme 1M
−11.7%
% in uptrend
33%
Metric to watch

Switch ASIC cadence, AI back-end network revenue, and retimer/AEC attach rates.

What would prove us wrong

Weakens if cluster sizes plateau and network spend per accelerator falls.

Dependencies
↑ supplier  Optical Transceivers (800G / 1.6T)76↑ supplier  Fiber, Cable & Connectors68↑ supplier  AI PCBs & Laminates (CCL)70 ↓ customer  AI Server Racks (Taiwan ODMs)52

Networking theme performance

Equal-weight · rebased 100 · 1Y
Stocks we track

Who controls this bottleneck

Roles, not recommendations. Delayed prices; local currency.

StockRoleListingLast1D1M3MYTDOff 52w highTrendNext earnings
ANET
Arista Networks
 Ethernet switching for AI back-end networks NYSE
US		 $206.6 +5.06% +5.7% +3.9% +57.7% −4.7% 2026-11-03
AVGO
Broadcom
 Custom ASICs and Ethernet switch silicon for hyperscaler clusters NASDAQ
US		 $364.4 +5.54% +5.2% −7.1% +5.9% −24.1% 2026-12-09
CSCO
Cisco Systems
 Switching and silicon for AI networks NASDAQ
US		 $102.0 +1.24% −10.2% −8.3% +34.9% −20.9% 2026-11-12
CRDO
Credo Technology
 Active electrical cables and SerDes NASDAQ
US		 $139.8 −1.13% −22.0% −46.2% −2.8% −53.8% 2026-12-01
ALAB
Astera Labs
 PCIe/CXL retimers and scale-up connectivity NASDAQ
US		 $227.8 −1.35% −24.1% −29.2% +36.9% −52.8% 2026-11-03
NVDA
NVIDIA
 Demand aggregator for HBM, packaging, optics and robotics compute NASDAQ
US		 $166.2 −4.34% −24.9% −26.1% −10.7% −30.5% 2026-11-17

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