Astera Labsvs.Amphenol
ALAB vs APH · both in Data centers, part of the AI & digital infrastructure value chain: Servers, networking, optics and data center capacity that tie AI infrastructure together.
Amphenol is about 3.7× larger than Astera Labs by market cap; Amphenol trades at the lower P/E (40.4 vs 151.6); year to date, Astera Labs leads (+66.8% vs +15.1%).
Side by side
| ALAB | APH | |
|---|---|---|
| Market cap | $56B | $208B |
| Price | $282.65 | $158.78 |
| Today | +1.8% | +2.1% |
| Return YTD | +66.8% | +15.1% |
| Return 1Y | +55.0% | +42.2% |
| P/E | 151.6 | 40.4 |
| P/S | 46.6 | 7.2 |
| P/B | 32.4 | 13.4 |
Data as of 2026-08-26 · updates daily after U.S. close
The two companies
Astera LabsALAB
Signal integrity becomes a real constraint at AI-server speeds. Astera Labs sells the fix: Aries PCIe retimers, Taurus and Leo connectivity, Scorpio fabric switches.
Full ALAB profile →AmphenolAPH
Interconnect hardware: connectors and cable, plus a sensor business. The high-speed parts end up in AI servers and data center gear.
Full APH profile →More ALAB & APH comparisons
Other head-to-heads in the Data centers segment.
See where ALAB and APH sit in the full AI & digital infrastructure map: every segment from suppliers to end markets.Open the AI value chain →