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 3.6× larger than Astera Labs by market cap; Amphenol trades at the lower P/E (41.6 vs 162.9); year to date, Astera Labs leads (+134.3% vs +31.2%).
Side by side
| ALAB | APH | |
|---|---|---|
| Market cap | $60.2B | $214B |
| Price | $347.05 | $85.32 |
| Today | −9.2% | −2.5% |
| Return YTD | +134.3% | +31.2% |
| Return 1Y | +76.5% | +43.6% |
| Since June 26, 2026 | −11.4% | +4.2% |
| P/E | 162.9 | 41.6 |
| P/S | 50.1 | 7.4 |
| P/B | 34.9 | 13.8 |
Data as of 2026-10-08 · updates daily after U.S. close
Since June 26, 2026: the change in the closing price, from the daily closes Sectivia records itself since that date.
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.