Amphenolvs.Coherent
APH vs COHR · 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 3.1× larger than Coherent by market cap; Amphenol trades at the lower P/E (43.8 vs 135.4); year to date, Coherent leads (+75.8% vs +17.7%).
Side by side
| APH | COHR | |
|---|---|---|
| Market cap | $196B | $63.5B |
| Price | $159.06 | $324.50 |
| Today | −2.0% | −0.8% |
| Return YTD | +17.7% | +75.8% |
| Return 1Y | +61.8% | +246.2% |
| P/E | 43.8 | 135.4 |
| P/S | 7.6 | 9.6 |
| P/B | 14.0 | 5.9 |
Data as of 2026-07-11 · updates daily after U.S. close
The two companies
AmphenolAPH
Interconnect technology, cables and sensors; a key supplier of high-speed interconnect for AI servers and data centers.
Full APH profile →CoherentCOHR
Produces optical transceivers and lasers — the components that transmit data as light between AI servers and data centers.
Full COHR profile →More comparisons in Data centers
See where APH and COHR sit in the full AI & digital infrastructure map — every segment from suppliers to end markets.Open the AI value chain →