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 ATEX
| 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 |
|---|---|---|---|---|---|---|
| Oct 27, 2026 | SCHEDULE 13G/A (amended) | ATEX Anterix Inc. | BlackRock, Inc. | 914,372 | 4.7% | SCHEDULE 13G/A ↗ |
| Jul 27, 2026 | SCHEDULE 13G | ATEX Anterix Inc. | BlackRock, Inc. | 999,278 | 5.1% | SCHEDULE 13G ↗ |
| Jul 8, 2026 | SCHEDULE 13G | ATEX Anterix Inc. | T. Rowe Price Investment Management, Inc. | 2.35M | 12.0% | SCHEDULE 13G ↗ |
| Jul 8, 2026 | SCHEDULE 13D/A (amended) | ATEX Anterix Inc. | Jeffrey A. Altman | 5.55M | 28.5% | SCHEDULE 13D/A ↗ |
| Jul 8, 2026 | SCHEDULE 13D/A (amended) | ATEX Anterix Inc. | Owl Creek Asset Management, L.P. | 5.41M | 27.7% | SCHEDULE 13D/A ↗ |
| Apr 27, 2026 | SCHEDULE 13G/A (amended) | ATEX Anterix Inc. | BlackRock, Inc. | 934,649 | 5.0% | SCHEDULE 13G/A ↗ |
| Jan 30, 2026 | SCHEDULE 13G/A (amended) | ATEX Anterix Inc. | The Vanguard Group | 931,305 | 5.0% | SCHEDULE 13G/A ↗ |
| Nov 12, 2025 | SCHEDULE 13G/A (amended) | ATEX Anterix Inc. | Dov Gertzulin | 744,544 | 4.0% | SCHEDULE 13G/A ↗ |
| Nov 12, 2025 | SCHEDULE 13G/A (amended) | ATEX Anterix Inc. | DG Capital Management, LLC | 744,544 | 4.0% | SCHEDULE 13G/A ↗ |
| Oct 17, 2025 | SCHEDULE 13G/A (amended) | ATEX Anterix Inc. | BlackRock, Inc. | 950,842 | 5.1% | SCHEDULE 13G/A ↗ |
| Aug 14, 2025 | SCHEDULE 13G | ATEX Anterix Inc. | Dov Gertzulin | 975,739 | 5.2% | SCHEDULE 13G ↗ |
| Aug 14, 2025 | SCHEDULE 13G | ATEX Anterix Inc. | DG Capital Management, LLC | 975,739 | 5.2% | SCHEDULE 13G ↗ |
| Mar 5, 2025 | SCHEDULE 13D/A (amended) | ATEX Anterix Inc. | William Heard | 1.74M | 9.4% | SCHEDULE 13D/A ↗ |
| Mar 5, 2025 | SCHEDULE 13D/A (amended) | ATEX Anterix Inc. | William E. Heard Declaration of Trust | 1.74M | 9.4% | SCHEDULE 13D/A ↗ |
| Mar 5, 2025 | SCHEDULE 13D/A (amended) | ATEX Anterix Inc. | Heard Investment Manager LLC | 1.74M | 9.4% | SCHEDULE 13D/A ↗ |
| Mar 5, 2025 | SCHEDULE 13D/A (amended) | ATEX Anterix Inc. | Heard Capital LLC | 1.74M | 9.4% | SCHEDULE 13D/A ↗ |
16 items, most recent first (up to 50). Every row links to its original filing. Updated Nov 15, 2026, 6:42 PM EST.
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