Feeds › Ownership stakes (13D / 13G)
Ownership stakes (13D / 13G)
Investors who own more than 5% of a company, from activists (13D) to passive holders (13G).
About this data
- What it is
- An investor who owns more than 5% of a public company must say so. Investors who may try to influence the company, such as activists, file the longer Schedule 13D; passive holders file the shorter Schedule 13G.
- Who files it
- The investor, within days of crossing 5%, and again whenever the stake changes materially.
- How current
- We collect new filings throughout the day on SEC business days.
- Worth knowing
- 13G filings are far more common than 13D. A 13D usually means the investor intends to push for changes, so it tends to get more attention.
All of this comes from public filings.
Source and freshness · Information, not investment advice (disclaimer).
Filings per day, last 30 days
13D (activist) 13G (passive)
Latest ownership filings
Showing: ticker ATRO
| Filed | ScheduleBoth report a stake of more than 5%. A 13D is filed by investors who may try to influence the company, such as activists; a 13G by passive holders. | Company | Investor | Shares | % of shares | Filing |
|---|---|---|---|---|---|---|
| Nov 13, 2026 | SCHEDULE 13G/A (amended) | ATRO Astronics Corporation | Capital International Investors | 0 | 0.0% | SCHEDULE 13G/A ↗ |
| Nov 13, 2026 | SCHEDULE 13G | ATRO Astronics Corporation | Capital International Investors | 2.22M | 6.2% | SCHEDULE 13G ↗ |
| Nov 13, 2026 | SCHEDULE 13G | ATRO Astronics Corporation | Eduardo Marques | 1.89M | 5.2% | SCHEDULE 13G ↗ |
| Nov 13, 2026 | SCHEDULE 13G | ATRO Astronics Corporation | Pertento Advisors LLC | 1.89M | 5.2% | SCHEDULE 13G ↗ |
| Nov 13, 2026 | SCHEDULE 13G | ATRO Astronics Corporation | Pertento Partners LLP | 1.89M | 5.2% | SCHEDULE 13G ↗ |
| Nov 10, 2026 | SCHEDULE 13G | ATRO Astronics Corporation | State Street Corporation | 1.84M | 5.1% | SCHEDULE 13G ↗ |
| Oct 8, 2026 | SCHEDULE 13G/A (amended) | ATRO Astronics Corporation | Dimensional Fund Advisors LP | 335,448 | 3.1% | SCHEDULE 13G/A ↗ |
| Aug 14, 2026 | SCHEDULE 13G/A (amended) | ATRO Astronics Corporation | Stowers Institute for Medical Research | 1.44M | 4.5% | SCHEDULE 13G/A ↗ |
| Aug 14, 2026 | SCHEDULE 13G/A (amended) | ATRO Astronics Corporation | American Century Companies, Inc. | 1.44M | 4.5% | SCHEDULE 13G/A ↗ |
| Aug 14, 2026 | SCHEDULE 13G/A (amended) | ATRO Astronics Corporation | American Century Investment Management, Inc. | 1.44M | 4.5% | SCHEDULE 13G/A ↗ |
| Aug 12, 2026 | SCHEDULE 13G | ATRO Astronics Corporation | Capital International Investors | 264,925 | 5.8% | SCHEDULE 13G ↗ |
| Aug 7, 2026 | SCHEDULE 13G | ATRO Astronics Corporation | Ssga Funds Management, Inc. | 1,042 | 0.0% | SCHEDULE 13G ↗ |
| Aug 7, 2026 | SCHEDULE 13G | ATRO Astronics Corporation | State Street Corporation | 14,821 | 0.1% | SCHEDULE 13G ↗ |
| Aug 6, 2026 | SCHEDULE 13G/A (amended) | ATRO Astronics Corporation | BlackRock, Inc. | 82,314 | 0.8% | SCHEDULE 13G/A ↗ |
| Jul 14, 2026 | SCHEDULE 13G | ATRO Astronics Corporation | Dimensional Fund Advisors LP | 345,139 | 7.5% | SCHEDULE 13G ↗ |
| Jul 8, 2026 | SCHEDULE 13G | ATRO Astronics Corporation | BlackRock, Inc. | 481,097 | 12.6% | SCHEDULE 13G ↗ |
| Jul 8, 2026 | SCHEDULE 13G | ATRO Astronics Corporation | Ssga Funds Management, Inc. | 339,640 | 7.4% | SCHEDULE 13G ↗ |
| Jul 8, 2026 | SCHEDULE 13G | ATRO Astronics Corporation | State Street Corporation | 475,871 | 10.4% | SCHEDULE 13G ↗ |
| May 14, 2026 | SCHEDULE 13G/A (amended) | ATRO Astronics Corporation | Capital International Investors | 1.29M | 4.0% | SCHEDULE 13G/A ↗ |
| May 12, 2026 | SCHEDULE 13G | ATRO Astronics Corporation | Ssga Funds Management, Inc. | 1.70M | 5.3% | SCHEDULE 13G ↗ |
| May 12, 2026 | SCHEDULE 13G | ATRO Astronics Corporation | State Street Corporation | 2.35M | 7.4% | SCHEDULE 13G ↗ |
| Apr 29, 2026 | SCHEDULE 13G | ATRO Astronics Corporation | Vanguard Capital Management | 1.62M | 5.1% | SCHEDULE 13G ↗ |
| Mar 26, 2026 | SCHEDULE 13G/A (amended) | ATRO Astronics Corporation | The Vanguard Group | 0 | 0.0% | SCHEDULE 13G/A ↗ |
| Feb 13, 2026 | SCHEDULE 13G | ATRO Astronics Corporation | Capital International Investors | 1.85M | 5.9% | SCHEDULE 13G ↗ |
| Feb 13, 2026 | SCHEDULE 13G | ATRO Astronics Corporation | Stowers Institute for Medical Research | 1.76M | 5.6% | SCHEDULE 13G ↗ |
| Feb 13, 2026 | SCHEDULE 13G | ATRO Astronics Corporation | American Century Companies, Inc. | 1.76M | 5.6% | SCHEDULE 13G ↗ |
| Feb 13, 2026 | SCHEDULE 13G | ATRO Astronics Corporation | American Century Investment Management, Inc. | 1.76M | 5.6% | SCHEDULE 13G ↗ |
| Feb 9, 2026 | SCHEDULE 13G | ATRO Astronics Corporation | State Street Corporation | 1.83M | 5.8% | SCHEDULE 13G ↗ |
| Jan 21, 2026 | SCHEDULE 13G/A (amended) | ATRO Astronics Corporation | BlackRock, Inc. | 2.75M | 8.7% | SCHEDULE 13G/A ↗ |
| Jan 15, 2026 | SCHEDULE 13D/A (amended) | ATRO Astronics Corporation | Anil K. Shrivastava | 0 | 0.0% | SCHEDULE 13D/A ↗ |
| Jan 15, 2026 | SCHEDULE 13D/A (amended) | ATRO Astronics Corporation | Daniel M. Friedberg | 0 | 0.0% | SCHEDULE 13D/A ↗ |
| Jan 15, 2026 | SCHEDULE 13D/A (amended) | ATRO Astronics Corporation | Michael David Braner | 0 | 0.0% | SCHEDULE 13D/A ↗ |
| Jan 15, 2026 | SCHEDULE 13D/A (amended) | ATRO Astronics Corporation | 325 Capital LLC | 0 | 0.0% | SCHEDULE 13D/A ↗ |
| Jan 15, 2026 | SCHEDULE 13D/A (amended) | ATRO Astronics Corporation | 325 Capital GP, LLC | 0 | 0.0% | SCHEDULE 13D/A ↗ |
| Jan 15, 2026 | SCHEDULE 13D/A (amended) | ATRO Astronics Corporation | 325 Capital Master Fund LP | 0 | 0.0% | SCHEDULE 13D/A ↗ |
| Nov 18, 2025 | SCHEDULE 13G/A (amended) | ATRO Astronics Corporation | John Reilly | 1.23M | 4.0% | SCHEDULE 13G/A ↗ |
| Nov 18, 2025 | SCHEDULE 13G/A (amended) | ATRO Astronics Corporation | Richard Meisenberg | 1.23M | 4.0% | SCHEDULE 13G/A ↗ |
| Nov 18, 2025 | SCHEDULE 13G/A (amended) | ATRO Astronics Corporation | ACK Asset Management LLC | 1.23M | 4.0% | SCHEDULE 13G/A ↗ |
| Oct 30, 2025 | SCHEDULE 13G/A (amended) | ATRO Astronics Corporation | The Vanguard Group | 1.94M | 6.2% | SCHEDULE 13G/A ↗ |
| Aug 13, 2025 | SCHEDULE 13G/A (amended) | ATRO Astronics Corporation | Goldman Sachs & Co. LLC | 223,445 | 0.7% | SCHEDULE 13G/A ↗ |
| Aug 13, 2025 | SCHEDULE 13G/A (amended) | ATRO Astronics Corporation | The Goldman Sachs Group, Inc. | 223,445 | 0.7% | SCHEDULE 13G/A ↗ |
| May 15, 2025 | SCHEDULE 13G/A (amended) | ATRO Astronics Corporation | Kliksberg Ruben | 225,893 | 0.7% | SCHEDULE 13G/A ↗ |
| May 15, 2025 | SCHEDULE 13G/A (amended) | ATRO Astronics Corporation | Double Twins K, LLC | 225,893 | 0.7% | SCHEDULE 13G/A ↗ |
| May 15, 2025 | SCHEDULE 13G/A (amended) | ATRO Astronics Corporation | Redwood Capital Management Holdings, LP | 225,893 | 0.7% | SCHEDULE 13G/A ↗ |
| May 15, 2025 | SCHEDULE 13G/A (amended) | ATRO Astronics Corporation | Redwood Capital Management LLC | 225,893 | 0.7% | SCHEDULE 13G/A ↗ |
| May 9, 2025 | SCHEDULE 13G | ATRO Astronics Corporation | Goldman Sachs & Co. LLC | 1.56M | 5.2% | SCHEDULE 13G ↗ |
| May 9, 2025 | SCHEDULE 13G | ATRO Astronics Corporation | The Goldman Sachs Group, Inc. | 1.56M | 5.2% | SCHEDULE 13G ↗ |
| Apr 17, 2025 | SCHEDULE 13G/A (amended) | ATRO Astronics Corporation | BlackRock, Inc. | 2.19M | 7.2% | SCHEDULE 13G/A ↗ |
| Feb 14, 2025 | SCHEDULE 13G | ATRO Astronics Corporation | Ruben Kliksberg | 2.12M | 6.8% | SCHEDULE 13G ↗ |
| Feb 14, 2025 | SCHEDULE 13G | ATRO Astronics Corporation | Double Twins K, LLC | 2.12M | 6.8% | SCHEDULE 13G ↗ |
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