Amphenol
Amphenol Corporation is one of the world's largest designers, manufacturers and marketers of electrical, electronic and fiber optic connectors and interconnect systems, antennas, sensors and sensor-based products, and coaxial, high-speed, fiber optic and specialty cable. The company operates through three reportable… From the company’s description.
Margins and return on equity change in ; everything else in percent. Fewer shares and less debt are shown plainly, not as bad news — it depends what you make of buybacks. Dotted labels explain each measure. is shown separately from the annual figures.
What Amphenol does
In the company’s own words
Amphenol Corporation is one of the world's largest designers, manufacturers and marketers of electrical, electronic and fiber optic connectors and interconnect systems, antennas, sensors and sensor-based products, and coaxial, high-speed, fiber optic and specialty cable. The company operates through three reportable business segments: Communications Solutions, which represents 52% of net sales and includes high-speed interconnect products, fiber optic systems, radio frequency interconnects, cable assemblies and antennas; Harsh Environment Solutions, representing 26% of net sales and providing ruggedized interconnect products, specialty cable and printed circuits; and Interconnect and Sensor Systems, representing 22% of net sales and offering sensors, sensor-based systems and value-add interconnect solutions.
The company serves a diversified customer base across multiple end markets including information technology and data communications (36% of sales), industrial (19%), automotive (15%), communications networks (10%), defense (9%), commercial aerospace (5%), and mobile devices (6%). Amphenol's products enable applications ranging from artificial intelligence and cloud computing infrastructure to electric vehicles, 5G networks, aerospace systems and industrial automation.
As of December 31, 2025, Amphenol employed approximately 170,000 people worldwide, with about 90% of its workforce located outside the United States. The company operates manufacturing, engineering, sales and service facilities in approximately 40 countries, with approximately 79% of long-lived assets located outside the United States. Non-U.S. markets represented approximately 65% of net sales in 2025, with China constituting approximately 16% of sales.
The company's business model emphasizes broad market diversification, high-technology performance-enhancing solutions, global presence and cost control. Amphenol maintains a distinctive entrepreneurial management culture with more than 140 general managers operating in a flat organizational structure. The company pursues strategic acquisitions to expand product lines, technological capabilities and geographic presence. The company's website is www.amphenol.com.
Company details
- Sector
- Information Technology
- Industry (SIC)
- Electronic Equipment
- Headquarters
- WALLINGFORD, CT
- Fiscal year end
- December
- CIK
- 820313
- SIC
- 3678
Financial performance, year by year
Fiscal 2013–2025 · USDThe full income statement, balance sheet and cash flow for each of these years — every figure traceable to its filing — is on the Financials tab with a free account.
Who owns Amphenol — and what changed
Funds as of 2026Q2 · superinvestors as of 2026-06-30
Superinvestors in Amphenol · what they did last quarter
Share of each manager’s reported 13F portfolio. Change is in shares held, since the previous quarter.
Largest fund holders · Amphenol’s weight in each
Fund ownership is a floor, not a census — pensions, insurers and people holding shares directly are not visible here.
Amphenol’s bonds, as funds hold them
Funds report holding 20 issues of Amphenol’s debt, $3.06B at market value — what funds hold, not the company’s total debt. Weighted-average coupon 4.42%, maturing 2027 to 2055.
Fund ownership counts N-PORT filers only, so it is a floor rather than a census — pensions, insurers and direct holders are not visible here, and the remainder is not “held by individuals”.
Fund ownership is a subset of institutional 13F ownership — the two describe overlapping populations and must not be added together.
Every fund and institutional holder, quarter by quarter, is on the Ownership tab with a free account.
Recent filings
All filings →Each filing opens into its own statements and disclosures here.
Put this business in context.
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