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 OKLO
| 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 12, 2026 | SCHEDULE 13G | OKLO Oklo Inc. | Jane Street Global Trading, LLC | 983,551 | 0.5% | SCHEDULE 13G ↗ |
| Nov 12, 2026 | SCHEDULE 13G | OKLO Oklo Inc. | Jane Street Capital, LLC | 8.55M | 4.6% | SCHEDULE 13G ↗ |
| Nov 12, 2026 | SCHEDULE 13G | OKLO Oklo Inc. | Jane Street Group, LLC | 9.53M | 5.1% | SCHEDULE 13G ↗ |
| Jul 29, 2026 | SCHEDULE 13G/A (amended) | OKLO Oklo Inc. | BlackRock, Inc. | 6.23M | 3.6% | SCHEDULE 13G/A ↗ |
| Jul 6, 2026 | SCHEDULE 13D/A (amended) | OKLO Oklo Inc. | Caroline Cochran | 20.56M | 11.1% | SCHEDULE 13D/A ↗ |
| Jul 6, 2026 | SCHEDULE 13D/A (amended) | OKLO Oklo Inc. | Jacob DeWitte | 20.56M | 11.1% | SCHEDULE 13D/A ↗ |
| Apr 21, 2026 | SCHEDULE 13D/A (amended) | OKLO Oklo Inc. | Caroline Cochran | 21.16M | 12.2% | SCHEDULE 13D/A ↗ |
| Apr 21, 2026 | SCHEDULE 13D/A (amended) | OKLO Oklo Inc. | Jacob DeWitte | 21.16M | 12.2% | SCHEDULE 13D/A ↗ |
| Mar 27, 2026 | SCHEDULE 13G/A (amended) | OKLO Oklo Inc. | The Vanguard Group | 0 | 0.0% | SCHEDULE 13G/A ↗ |
| Jan 21, 2026 | SCHEDULE 13G/A (amended) | OKLO Oklo Inc. | BlackRock, Inc. | 14.42M | 9.2% | SCHEDULE 13G/A ↗ |
| Oct 31, 2025 | SCHEDULE 13G/A (amended) | OKLO Oklo Inc. | The Vanguard Group | 11.59M | 7.8% | SCHEDULE 13G/A ↗ |
| Oct 17, 2025 | SCHEDULE 13G | OKLO Oklo Inc. | BlackRock, Inc. | 8.08M | 5.5% | SCHEDULE 13G ↗ |
| Jul 29, 2025 | SCHEDULE 13G | OKLO Oklo Inc. | The Vanguard Group | 8.69M | 5.9% | SCHEDULE 13G ↗ |
| Jul 2, 2025 | SCHEDULE 13D/A (amended) | OKLO Oklo Inc. | Caroline Cochran | 23.91M | 16.2% | SCHEDULE 13D/A ↗ |
| Jul 2, 2025 | SCHEDULE 13D/A (amended) | OKLO Oklo Inc. | Jacob DeWitte | 23.91M | 16.2% | SCHEDULE 13D/A ↗ |
| Apr 4, 2025 | SCHEDULE 13D/A (amended) | OKLO Oklo Inc. | Apollo Projects GP, LLC | 478,500 | 0.3% | SCHEDULE 13D/A ↗ |
| Apr 4, 2025 | SCHEDULE 13D/A (amended) | OKLO Oklo Inc. | Apollo Projects, L.P. | 478,500 | 0.3% | SCHEDULE 13D/A ↗ |
| Apr 4, 2025 | SCHEDULE 13D/A (amended) | OKLO Oklo Inc. | Hydrazine Capital II, GP, LLC | 0 | 0.0% | SCHEDULE 13D/A ↗ |
| Apr 4, 2025 | SCHEDULE 13D/A (amended) | OKLO Oklo Inc. | Hydrazine Capital II, L.P. | 0 | 0.0% | SCHEDULE 13D/A ↗ |
| Apr 4, 2025 | SCHEDULE 13D/A (amended) | OKLO Oklo Inc. | Samuel H. Altman | 6.65M | 4.8% | SCHEDULE 13D/A ↗ |
| Apr 2, 2025 | SCHEDULE 13D/A (amended) | OKLO Oklo Inc. | Caroline Cochran | 25.40M | 18.2% | SCHEDULE 13D/A ↗ |
| Apr 2, 2025 | SCHEDULE 13D/A (amended) | OKLO Oklo Inc. | Jacob DeWitte | 25.40M | 18.2% | SCHEDULE 13D/A ↗ |
| Feb 14, 2025 | SCHEDULE 13G/A (amended) | OKLO Oklo Inc. | Todd J. Kantor | 0 | 0.0% | SCHEDULE 13G/A ↗ |
| Feb 14, 2025 | SCHEDULE 13G/A (amended) | OKLO Oklo Inc. | Encompass Capital Advisors LLC | 0 | 0.0% | SCHEDULE 13G/A ↗ |
| Feb 14, 2025 | SCHEDULE 13G/A (amended) | OKLO Oklo Inc. | Matthew Ocko | 5.38M | 4.4% | SCHEDULE 13G/A ↗ |
| Feb 14, 2025 | SCHEDULE 13G/A (amended) | OKLO Oklo Inc. | Zachary Bogue | 5.33M | 4.4% | SCHEDULE 13G/A ↗ |
| Feb 14, 2025 | SCHEDULE 13G/A (amended) | OKLO Oklo Inc. | Archimedes Capital Asia, LLC | 104,702 | 0.0% | SCHEDULE 13G/A ↗ |
| Feb 14, 2025 | SCHEDULE 13G/A (amended) | OKLO Oklo Inc. | Three Kingdoms Capital Partners, L.P. | 104,702 | 0.0% | SCHEDULE 13G/A ↗ |
| Feb 14, 2025 | SCHEDULE 13G/A (amended) | OKLO Oklo Inc. | Data Collective IV GP, LLC | 5.28M | 4.3% | SCHEDULE 13G/A ↗ |
| Feb 14, 2025 | SCHEDULE 13G/A (amended) | OKLO Oklo Inc. | Data Collective IV, L.P. | 5.28M | 4.3% | SCHEDULE 13G/A ↗ |
| Feb 14, 2025 | SCHEDULE 13G/A (amended) | OKLO Oklo Inc. | Michael Klein | 500,000 | 0.4% | SCHEDULE 13G/A ↗ |
| Feb 14, 2025 | SCHEDULE 13G/A (amended) | OKLO Oklo Inc. | M. Klein Associates, Inc. | 500,000 | 0.4% | SCHEDULE 13G/A ↗ |
| Feb 14, 2025 | SCHEDULE 13G/A (amended) | OKLO Oklo Inc. | AltC Sponsor LLC | 0 | 0.0% | SCHEDULE 13G/A ↗ |
| Feb 14, 2025 | SCHEDULE 13G/A (amended) | OKLO Oklo Inc. | Peter Thiel | 0 | 0.0% | SCHEDULE 13G/A ↗ |
| Feb 14, 2025 | SCHEDULE 13G/A (amended) | OKLO Oklo Inc. | Ajay Royan | 0 | 0.0% | SCHEDULE 13G/A ↗ |
| Feb 14, 2025 | SCHEDULE 13G/A (amended) | OKLO Oklo Inc. | Mithril II UGP LLC | 0 | 0.0% | SCHEDULE 13G/A ↗ |
| Feb 14, 2025 | SCHEDULE 13G/A (amended) | OKLO Oklo Inc. | Mithril II GP LP | 0 | 0.0% | SCHEDULE 13G/A ↗ |
| Feb 14, 2025 | SCHEDULE 13G/A (amended) | OKLO Oklo Inc. | Mithril II LP | 0 | 0.0% | SCHEDULE 13G/A ↗ |
| Dec 23, 2024 | SCHEDULE 13D | OKLO Oklo Inc. | Apollo Projects GP, LLC | 478,500 | 0.4% | SCHEDULE 13D ↗ |
| Dec 23, 2024 | SCHEDULE 13D | OKLO Oklo Inc. | Apollo Projects, L.P. | 478,500 | 0.4% | SCHEDULE 13D ↗ |
| Dec 23, 2024 | SCHEDULE 13D | OKLO Oklo Inc. | Hydrazine Capital II, GP, LLC | 3.73M | 3.1% | SCHEDULE 13D ↗ |
| Dec 23, 2024 | SCHEDULE 13D | OKLO Oklo Inc. | Hydrazine Capital II, L.P. | 3.73M | 3.1% | SCHEDULE 13D ↗ |
| Dec 23, 2024 | SCHEDULE 13D | OKLO Oklo Inc. | Samuel H. Altman | 9.97M | 8.2% | SCHEDULE 13D ↗ |
43 items, most recent first (up to 50). Every row links to its original filing. Updated Nov 15, 2026, 6:54 PM EST.
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