Astera Labs (ALAB)

AI connectivity silicon (Astera Labs) — retimers/fabric chips for GPU-CPU-memory links

AI exposure 95% — derived from reported segment revenue, not asserted.

Where it sits

Connectivity → Network Switching & Hardware · figures rebased to Q2 2026, reported 2026-08-04

PCIe/CXL/Ethernet retimers, Scorpio fabric switches, Aries/Taurus/Leo ICs + COSMOS software (for AI racks) is 100% of revenue, so Network Switching & Hardware is effectively the whole company rather than one leg of it.

Reported segments

• Intelligent Connectivity Platform (single business) — 100% of revenue

Astera Labs ($392.4M Q2 2026, +104% YoY, +27% QoQ) — pure-play semiconductor connectivity for AI/cloud racks. Single business: Intelligent Connectivity Platform (PCIe/CXL/Ethernet retimers, Scorpio fabric switches, COSMOS software). Primary B3 Network Switching (fabric/connectivity silicon) + B1 Semiconductor Devices (it makes the ICs). Customers: hyperscalers + GPU/accelerator makers. Rivals MRVL/CRDO.

How the 95% is built

• Intelligent Connectivity Platform (single business) — 100% of revenue × 95% AI-driven (estimate). Retimers, PCIe/CXL and fabric chips are designed almost entirely for GPU-CPU-memory links inside AI servers; a small tail serves general cloud infrastructure

Investment read

Moat. Purpose-built AI-connectivity silicon with hyperscaler design-in lock-in — but the centre of gravity moved this quarter. Scorpio fabric switches become the largest product family in Q3 2026, a quarter ahead of management's own plan, while Aries retimers set a revenue record with PCIe Gen 6 now above 50% of company revenue. The moat is socket position at each generation, and it has to be re-won every generation.

Bottleneck / pricing power. Real pricing power in signal integrity: 73.7% non-GAAP gross margin, and a compulsory 20-25% ASP step-up per PCIe generation across a ~90% AI-server attach base. The fabric pivot dilutes it — Q3 gross margin guided down ~170bps to ~72% as Scorpio mix scales — and puts Astera against Broadcom, Marvell and NVIDIA NVSwitch rather than the thin retimer field.

Role in the AI stack. The in-rack AI-connectivity silicon layer (retimers/fabric).

Connected companies

• Taiwan Semiconductor (TSM) — ALAB is supplied by: foundry for connectivity silicon (fabless)
• NVIDIA (NVDA) — ALAB supplies: Aries PCIe retimers + smart cable modules for GPU racks
• Advanced Micro Devices (AMD) — ALAB supplies: connectivity silicon for Instinct accelerator systems
• Microsoft (MSFT) — ALAB supplies: Leo CXL memory controllers in Azure M-series VMs + PCIe/CXL retimers for AI servers
• Amazon (AMZN) — ALAB supplies: connectivity silicon for AWS (Trainium fabric) — warrants tied to up to $6.5B of purchases; supplier since 2022
• Credo Technology (CRDO) — ALAB competes with: AI interconnect silicon — Astera Labs (retimers/fabric switches) vs Credo (retimers/AECs)
• Marvell Technology (MRVL) — ALAB competes with: PCIe/CXL + interconnect silicon — Astera vs Marvell
• Broadcom (AVGO) — ALAB competes with: PCIe switching/retimers — Astera vs Broadcom (full-stack)
• Meta Platforms (META) — ALAB supplies: PCIe retimers in META's Grand Teton OCP AI servers
• Alphabet (GOOGL) — ALAB supplies: PCIe/CXL connectivity silicon for GOOGL AI data centers
• Oracle (ORCL) — ALAB supplies: PCIe/CXL connectivity silicon for ORCL AI data centers
• CoreWeave (CRWV) — ALAB supplies: PCIe/CXL connectivity silicon inside the AI servers CoreWeave deploys (via NVIDIA/ODMs)
• Microchip Technology (MCHP) — ALAB competes with: Head-to-head in PCIe Gen 6 fabric silicon: Microchip's Switchtec Gen 6 switches (3nm, up to 160 lanes) and XpressConnect PCIe 6.0/CXL 3.1 retimers against Astera Labs' Scorpio switches and Aries…

Others in Network Switching & Hardware

• Arista Networks (ANET)
• Cisco Systems (CSCO)
• Ciena (CIEN)
• Ubiquiti (UI)

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