Who owns Amphenol (APH)?
189 holders named in SEC filings declare between 57.8% and 86.1% of Amphenol's shares outstanding, as of Jul 31, 2026. The largest are Vanguard (10.4%), BlackRock (8.2%) and Capital Group (6.1%); the five largest hold 35.3% together. Another 2,140 institutions hold small positions worth 8.8%. At least 5.1% of the shares appear in no ownership filing: investors who do not have to report, mostly individuals. From Mar 31, 2026 to Jun 30, 2026, institutions that filed both quarters bought 6.6% and sold 7.0% of the shares, a net sale of 0.42%; 332 opened a position, 948 added, 764 reduced and 131 sold out. Biggest buyers: Capital Group (+23.3M shares) and T. Rowe Price (+10.3M shares). Biggest sellers: JPMorgan (-20.1M) and Fidelity (FMR) (-17.8M). Schedule 13D/G filings since Mar 31, 2026: FMR LLC cut its stake to 5.7% on Jun 30, 2026. Over time, 2,304 managers declared Amphenol in their 13F for Q2 2026, against 682 for Q4 2019: together at most 94.9% of the shares outstanding, against 93.2%.
| Holder | Filing | Share of capital | As of | Holding since (13F) |
|---|---|---|---|---|
| Vanguard | 13F | 10.4% | Jun 30, 2026 | Q4 2019 or earlier |
| BlackRock | 13F | 8.2% | Jun 30, 2026 | Q4 2019 or earlier |
| Capital Group | 13F | 6.1% | Jun 30, 2026 | Q4 2019 or earlier |
| Fidelity (FMR) | 13F | 5.7% | Jun 30, 2026 | Q4 2019 or earlier |
| State Street | 13F | 4.8% | Jun 30, 2026 | Q4 2019 or earlier |
| JPMorgan | 13F | 3.2% | Jun 30, 2026 | Q4 2019 or earlier |
| T. Rowe Price | 13F | 2.6% | Jun 30, 2026 | Q4 2019 or earlier |
| Geode Capital | 13F | 2.5% | Jun 30, 2026 | Q4 2019 or earlier |
| Morgan Stanley | 13F | 1.7% | Jun 30, 2026 | Q4 2019 or earlier |
| Norges Bank | 13F | 1.6% | Jun 30, 2026 | Q4 2019 or earlier |
| Wellington | 13F | 1.3% | Jun 30, 2026 | Q4 2019 or earlier |
| Bank of America | 13F | 1.3% | Jun 30, 2026 | Q4 2019 or earlier |
| UBS | 13F | 1.3% | Jun 30, 2026 | Q4 2019 or earlier |
| Nuveen | 13F | 1.2% | Jun 30, 2026 | Q4 2019 or earlier |
| BNY | 13F | 1.2% | Jun 30, 2026 | Q4 2019 or earlier |
| Northern Trust | 13F | 1.1% | Jun 30, 2026 | Q4 2019 or earlier |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 13F | 0.96% | Jun 30, 2026 | Q1 2023 |
| Goldman Sachs | 13F | 0.87% | Jun 30, 2026 | Q4 2019 or earlier |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 13F | 0.85% | Jun 30, 2026 | Q4 2019 or earlier |
| ROYAL BANK OF CANADA | 13F | 0.79% | Jun 30, 2026 | Q4 2019 or earlier |
| Franklin Templeton | 13F | 0.76% | Jun 30, 2026 | Q4 2019 or earlier |
| JENNISON ASSOCIATES LLC | 13F | 0.75% | Jun 30, 2026 | Q3 2025 |
| Janus Henderson | 13F | 0.74% | Jun 30, 2026 | Q4 2019 or earlier |
| Invesco | 13F | 0.67% | Jun 30, 2026 | Q4 2019 or earlier |
| Legal & General | 13F | 0.64% | Jun 30, 2026 | Q4 2019 or earlier |
Amphenol institutional ownership over time
| Quarter | 13F managers | Share of the company (upper bound) | Value declared | Held by stock pickers |
|---|---|---|---|---|
| Q4 2019 | 682 | 93.2% | $30.2B | 66.0% |
| Q4 2020 | 784 | 92.2% | $36.0B | 64.4% |
| Q4 2021 | 870 | 94.9% | $49.5B | 66.3% |
| Q4 2022 | 931 | 95.3% | $43.2B | 62.9% |
| Q4 2023 | 1,070 | 97.0% | $57.5B | 59.0% |
| Q4 2024 | 1,387 | 94.9% | $79.5B | 58.3% |
| Q4 2025 | 2,035 | 94.8% | $156.8B | 58.7% |
| Q2 2026 | 2,304 | 94.9% | $205.0B | 58.2% |
From SEC Form 13F, every quarter since the end of 2019, read like the current quarter: entities of a house summed, a value contradicting its share count set aside. The share of the company is an upper bound — two managers can declare the same shares — over the shares outstanding at that date.