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Smart Money Score
Composite context from Form 4, 13F and congressional disclosures; not a forecast.
Of the 21 tracked institutions holding APH, 13 have a 3-year clone track record — 11 of them beat the S&P. Average holder's clone alpha: +6.1pt. It's a gauge of who owns the name, not just how many.
Among the 21 tracked institutional investors we monitor, APH (AMPHENOL CORP) is held with a combined value of $73.41B across 445,928,840 shares. The largest holder is BlackRock, Inc. with a position worth $17.85B (0.27% of their portfolio). 3 funds opened new positions in the most recent quarter. 7 funds increased their holdings. 11 funds reduced their position.
Total Institutional Value
$73.41B
Total Shares Held
445,928,840
Institutional Holders
21
% of Shares Outstanding
36.2%
of 1.23B shares · SEC 2026-07-28
Days to Cover
2.6-4.2%
14.77M shares short · FINRA 2026-08-14
Tracked 13F institutions hold 36.2% of APH's shares outstanding. This is a floor: 13F filings arrive on a ~45-day lag and we track only a subset of institutional filers, so true institutional ownership is higher. Shares-outstanding is the latest SEC cover-page figure (as of 2026-07-28), not a live float.
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
0
$0
7
$180.41M
Total Transactions
7
Last 12 months
| Date | Insider | Code | Type | Shares | Value |
|---|---|---|---|---|---|
| Aug 5, 2026 | David M Silverman | S | Sale | 120,000 | $20.91M |
| Aug 4, 2026 | Craig A Lampo | S | Sale | 193,200 | $32.32M |
| Aug 3, 2026 | LANCE E D'AMICO | S | Sale | 50,000 | $8.10M |
| Aug 3, 2026 | LANCE E D'AMICO | S | Sale | 40,000 | $6.47M |
| Aug 3, 2026 | LANCE E D'AMICO | S | Sale | 10,000 | $1.62M |
| Jul 31, 2026 | RICHARD ADAM NORWITT | S | Sale | 500,000 | $80.79M |
| Jul 31, 2026 | RICHARD ADAM NORWITT | S | Sale | 186,104 | $30.20M |
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | BlackRock, Inc. | $17.85B | 0.27% | -0.7% |
| 2 | VANGUARD GROUP INC | $17.10B | 0.25% | +1.1% |
| 3 | FMR LLC | $12.44B | 0.54% | -11.2% |
| 4 | STATE STREET CORP | $10.50B | 0.31% | +3.7% |
| 5 | PRICE T ROWE ASSOCIATES INC /MD/ | $5.64B | 0.56% | +22.2% |
| 6 | Capital Research Global Investors | $5.20B | 0.73% | +10.7% |
| 7 | WELLINGTON MANAGEMENT GROUP LLP | $2.92B | 0.50% | +10.5% |
| 8 | AQR CAPITAL MANAGEMENT LLC | $774.50M | 0.27% | -20.4% |
| 9 | ADAGE CAPITAL PARTNERS GP, L.L.C. | $250.92M | 0.35% | -20.3% |
| 10 | MILLENNIUM MANAGEMENT LLC | $147.80M | 0.10% | -67.8% |
SEC Schedule 13D (activist) and 13G (passive) filings for APH. Filed when an investor acquires 5%+ ownership.
| Member | Type | Date |
|---|---|---|
| Dan Newhouse | Buy | Jul 10, 2026 |
| Rick Larsen | Buy | Jul 8, 2026 |
| Alan Armstrong | Buy | Mar 27, 2026 |
| Valerie Hoyle | Sell |
As of the latest SEC 13F filings, BlackRock, Inc. is the largest institutional holder of APH with a position worth $17.85B, representing 0.27% of their portfolio. In total, 21 institutional investors hold APH with a combined value of $73.41B.
In the most recent quarter, 3 funds opened a new position in APH. Additionally, 7 increased their holdings and 11 reduced their positions.
Institutional investors hold $73.41B worth of APH stock across 21 positions. The largest institutional holder is BlackRock, Inc. with $17.85B in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For APH, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their APH positions.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
| Sep 23, 2025 |
| Byron Donalds | Buy | Apr 10, 2025 |
| Rob Bresnahan | Buy | Apr 8, 2025 |
| James Comer | Buy | Jan 2, 2025 |
| Valerie Hoyle | Buy | Oct 29, 2024 |
Showing 8 of 12. STOCK Act disclosures lag up to 45 days.
Last Close
$81.76
2026-09-08
YTD
+17.0%
81% of 52-week range
