Amphenol Corporation (APH) Shareholders & Insider Trades
Amphenol shareholders at a glance
The largest holder of Amphenol stock is Vanguard Capital Management LLC, with 160.7 million shares (13.03% of the company), worth about $25.48 billion as of September 25, 2026. The 10 largest holders together own 81.1%.
In Q2 2026, 2,430 institutional holdings reports listed 1.50 billion shares worth $207.00 billion, up 29.3% in shares from Q1 2026.
Insiders reported 74 transactions in the last two years: 33 sales worth $720.38 million and 1 purchase. The newest one on file is from May 5, 2026 (Norwitt Richard Adam, Chief Executive Officer).
Major holders as of September 25, 2026; quarterly totals from institutional holdings reports (latest Q2 2026); insider transactions on file through May 5, 2026.
Amphenol Corporation
Shareholders Summary
2026Q2
Ownership by Type
Geographic Distribution
Largest Amphenol shareholders
| Holder | Shares | % of company | Value |
|---|---|---|---|
| Vanguard Capital Management LLC | 160.7 million | 13.03% | $25.5B |
| BlackRock Advisors LLC | 158.2 million | 12.83% | $25.1B |
| Fidelity Management & Research Co. LLC | 141.0 million | 11.43% | $22.4B |
| State Street Corporation | 119.0 million | 9.65% | $18.9B |
| Capital Research & Management Co. (International Investors) | 86.1 million | 6.98% | $13.6B |
| JPMorgan Investment Management, Inc. | 78.4 million | 6.36% | $12.4B |
| Vanguard Portfolio Management LLC | 71.4 million | 5.79% | $11.3B |
| T. Rowe Price International Ltd. | 64.0 million | 5.19% | $10.2B |
| Geode Capital Management LLC | 62.1 million | 5.04% | $9.9B |
| Capital Research & Management Co. (Global Investors) | 59.0 million | 4.78% | $9.4B |
As of September 25, 2026.
Amphenol institutional holdings by quarter
| Quarter | Reports | Shares | Value |
|---|---|---|---|
| Q2 2026 | 2,430 | 1.50 billion | $207.0B |
| Q1 2026 | 2,224 | 1.16 billion | $146.0B |
| Q4 2025 | 2,143 | 1.25 billion | $158.0B |
| Q3 2025 | 1,909 | 1.16 billion | $143.0B |
| Q2 2025 | 1,723 | 1.18 billion | $117.0B |
| Q1 2025 | 1,502 | 1.16 billion | $76.2B |
| Q4 2024 | 1,475 | 1.16 billion | $80.4B |
| Q3 2024 | 1,372 | 1.16 billion | $75.6B |
Shares and value held by institutions that file quarterly holdings reports (options not included).
Amphenol insider trades
| Insider | Date | Title | Transaction | Value |
|---|---|---|---|---|
| Norwitt Richard Adam | May 5, 2026 | Chief Executive Officer | Sale at price 142.04 - 143.90 per share. | $18.7M |
| Norwitt Richard Adam | May 5, 2026 | Chief Executive Officer | Conversion of Exercise of derivative security at price 22.37 per share. | $2.9M |
| D'Amico Lance E | Feb 18, 2026 | General Counsel | Sale at price 149.88 per share. | $7.5M |
| Lampo Craig A | Feb 18, 2026 | Chief Financial Officer | Sale at price 149.98 per share. | $15.0M |
| Lampo Craig A | Feb 18, 2026 | Chief Financial Officer | Conversion of Exercise of derivative security at price 22.00 per share. | $2.2M |
| D'Amico Lance E | Feb 18, 2026 | General Counsel | Conversion of Exercise of derivative security at price 22.55 per share. | $1.1M |
| Norwitt Richard Adam | Feb 12, 2026 | Chief Executive Officer | Sale at price 147.17 - 147.27 per share. | $89.6M |
| Norwitt Richard Adam | Feb 12, 2026 | Chief Executive Officer | Conversion of Exercise of derivative security at price 22.37 per share. | $13.6M |
| Livingston Robert A | Feb 5, 2026 | Director | Purchase at price 128.51 per share. | $1.3M |
| Ivas Michael R | Feb 4, 2026 | Officer | Stock Gift at price 0.00 per share. | – |
| Ivas Michael R | Feb 4, 2026 | Officer | Conversion of Exercise of derivative security at price 22.37 per share. | $559,312 |
| Lamba Sanjiv | Jan 8, 2026 | Director | Stock Award(Grant) at price 136.25 per share. | $74,665 |
Newest 12 of 74 insider transactions in the last two years.
Questions and answers
Who owns the most Amphenol stock?
Vanguard Capital Management LLC, with 13.03% of the company (as of September 25, 2026). Next: BlackRock Advisors LLC (12.83%) and Fidelity Management & Research Co. LLC (11.43%).
How many institutions own Amphenol stock?
2,430 institutional holdings reports listed Amphenol shares in Q2 2026, 1.50 billion shares in all worth $207.00 billion.
Are Amphenol insiders buying or selling the stock?
In the last two years insiders reported 33 sales and 1 purchase (74 transactions in all); the newest on file is from May 5, 2026.
