Amphenol Corporation
Amphenol Corporation (APH) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · APH · as of Sep 30, 2024
Ownership Breakdown
1,351
Institutional Holders
▼ 2 vs Q2
$73.33B
Total Inst. Value
▼ $3.67B vs Q2
1.23B
Shares Outstanding
freeFloat 99.36%
1.13B
13F Shares Held
▼ 17.36M vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
APH largest shareholders · institutional ownership
Q3 2024 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC electronic connectors | 150.02M | 12.45% | 12.45% | $9.78T | Nov 13, 2024 | ▲ 1.18M |
FMR LLC electronic connectors | 101.61M | 8.43% | 8.43% | $6.62T | Nov 13, 2024 | ▼ 388.5K |
BLACKROCK, INC. electronic connectors | 93.13M | 7.73% | 7.73% | $6.07T | Nov 13, 2024 | NEW |
STATE STREET CORP electronic connectors | 53.53M | 4.44% | 4.44% | $3.50T | Nov 14, 2024 | ▲ 1.54M |
PRICE T ROWE ASSOCIATES INC /MD/ electronic connectors | 43.07M | 3.57% | 3.57% | $2.81T | Nov 14, 2024 | ▼ 15.36M |
BANK OF NEW YORK MELLON CORP electronic connectors | 35.43M | 2.94% | 2.94% | $2.31T | Nov 12, 2024 | ▼ 1.21M |
GEODE CAPITAL MANAGEMENT, LLC electronic connectors | 24.67M | 2.05% | 2.05% | $1.60T | Nov 12, 2024 | ▲ 565.0K |
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ electronic connectors | 22.84M | 1.90% | 1.90% | $1.49T | Nov 12, 2024 | ▼ 385.1K |
JPMORGAN CHASE & CO electronic connectors | 20.89M | 1.73% | 1.73% | $1.36T | Dec 26, 2024 | ▼ 6.74M |
MORGAN STANLEY electronic connectors | 20.15M | 1.67% | 1.67% | $1.31T | May 14, 2025 | ▲ 294.8K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2024 vs prior quarter
Q3 2024
21
Increased
+24.39M shares2
New Positions
first time holders27
Decreased
−43.08M shares0
Sold Out
fully exitedNet shares change (top 50)
18.69M
+24.39M / −43.08M
Net new holders
-4
2 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
APH insider trading · insider activity
Source: SEC Form 4
7
Buy transactions
9
Sell transactions
0.78
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
WALTER LUC President, HES Division | May 22, 2026 | Award | 108,809 | $132.06 | $14.37M | 108.8K | Form 4 ↗ |
Straub Peter President, ISS Division | May 22, 2026 | Award | 108,809 | $132.06 | $14.37M | 108.8K | Form 4 ↗ |
Silverman David M EVP, Human Resources | May 22, 2026 | Award | 70,690 | $132.06 | $9.34M | 70.7K | Form 4 ↗ |
NORWITT RICHARD ADAM President & CEO | May 22, 2026 | Award | 464,989 | $132.06 | $61.41M | 465.0K | Form 4 ↗ |
Lampo Craig A Executive VP & CFO | May 22, 2026 | Award | 133,161 | $132.06 | $17.59M | 133.2K | Form 4 ↗ |
Ivas Michael R. SVP & Corporate Controller | May 22, 2026 | Award | 51,134 | $132.06 | $6.75M | 51.1K | Form 4 ↗ |
Doherty William J President, CS Division | May 22, 2026 | Award | 108,809 | $132.06 | $14.37M | 108.8K | Form 4 ↗ |
D'AMICO LANCE E EVP, Secretary & GenCounsel | May 22, 2026 | Award | 83,020 | $132.06 | $10.96M | 83.0K | Form 4 ↗ |
Wolff Anne Clarke director | May 22, 2026 | Award | 1,552 | — | — | 1.6K | Form 4 ↗ |
Singh Prahlad R. director | May 22, 2026 | Award | 1,552 | — | — | 1.6K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Amphenol Corporation (APH) is primarily owned by institutional investors, who hold approximately 91.5% of total shares outstanding. Company insiders own approximately 0.64%, while retail and public investors account for the remaining 7.87%.
The largest institutional shareholder of Amphenol Corporation is VANGUARD GROUP INC, holding approximately 150.02 million shares — equal to 12.45% of outstanding shares — as of September 30, 2024.
A total of 1,351 institutional investors currently hold APH stock, with a combined institutional value of approximately $73.33 billion as of the most recent 13F filing period.
Frequently asked questions
APH ownershipAmphenol Corporation (APH) is primarily owned by institutional investors, who hold approximately 91.5% of shares. The largest shareholder is VANGUARD GROUP INC with a 12.45% stake. Company insiders hold 0.64%. Data sourced from SEC Form 13F as of September 30, 2024.