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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 CEG
| 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 |
|---|---|---|---|---|---|---|
| Aug 7, 2026 | SCHEDULE 13G/A (amended) | CEG Constellation Energy Corporation | ECP Calpine Rollover Fund, LP | 399,812 | 0.1% | SCHEDULE 13G/A ↗ |
| Aug 7, 2026 | SCHEDULE 13G/A (amended) | CEG Constellation Energy Corporation | ECP Calpine Continuation Fund, LP | 4.70M | 1.3% | SCHEDULE 13G/A ↗ |
| Aug 7, 2026 | SCHEDULE 13G/A (amended) | CEG Constellation Energy Corporation | ECP Calpine Fund GP, LP | 5.74M | 1.6% | SCHEDULE 13G/A ↗ |
| Aug 7, 2026 | SCHEDULE 13G/A (amended) | CEG Constellation Energy Corporation | ECP IV-D Volt Holdings, LP | 764,919 | 0.2% | SCHEDULE 13G/A ↗ |
| Aug 7, 2026 | SCHEDULE 13G/A (amended) | CEG Constellation Energy Corporation | ECP IV-C Volt Holdings, LP | 291,129 | 0.1% | SCHEDULE 13G/A ↗ |
| Aug 7, 2026 | SCHEDULE 13G/A (amended) | CEG Constellation Energy Corporation | ECP IV-B Volt Holdings, LP | 58,863 | 0.0% | SCHEDULE 13G/A ↗ |
| Aug 7, 2026 | SCHEDULE 13G/A (amended) | CEG Constellation Energy Corporation | ECP IV-A Volt Holdings, LP | 351,240 | 0.1% | SCHEDULE 13G/A ↗ |
| Aug 7, 2026 | SCHEDULE 13G/A (amended) | CEG Constellation Energy Corporation | ECP Checkerspot Holdings, LP | 2.40M | 0.7% | SCHEDULE 13G/A ↗ |
| Aug 7, 2026 | SCHEDULE 13G/A (amended) | CEG Constellation Energy Corporation | ECP III-D Volt Holdings, LP | 1.19M | 0.3% | SCHEDULE 13G/A ↗ |
| Aug 7, 2026 | SCHEDULE 13G/A (amended) | CEG Constellation Energy Corporation | ECP III-C Volt Holdings, LP | 962,349 | 0.3% | SCHEDULE 13G/A ↗ |
| Aug 7, 2026 | SCHEDULE 13G/A (amended) | CEG Constellation Energy Corporation | ECP III-B Volt Holdings, LLC | 281,120 | 0.1% | SCHEDULE 13G/A ↗ |
| Aug 7, 2026 | SCHEDULE 13G/A (amended) | CEG Constellation Energy Corporation | ECP III-A Volt Holdings, LLC | 2.33M | 0.7% | SCHEDULE 13G/A ↗ |
| Aug 7, 2026 | SCHEDULE 13G/A (amended) | CEG Constellation Energy Corporation | ECP III Volt Holdings, LLC | 69,149 | 0.0% | SCHEDULE 13G/A ↗ |
| Aug 7, 2026 | SCHEDULE 13G/A (amended) | CEG Constellation Energy Corporation | ECP Calpine GP, LLC | 5.74M | 1.6% | SCHEDULE 13G/A ↗ |
| Aug 7, 2026 | SCHEDULE 13G/A (amended) | CEG Constellation Energy Corporation | Energy Capital Partners IV, LLC | 1.47M | 0.4% | SCHEDULE 13G/A ↗ |
| Aug 7, 2026 | SCHEDULE 13G/A (amended) | CEG Constellation Energy Corporation | Energy Capital Partners III, LLC | 7.23M | 2.0% | SCHEDULE 13G/A ↗ |
| Aug 7, 2026 | SCHEDULE 13G/A (amended) | CEG Constellation Energy Corporation | ECP ControlCo, LLC | 14.44M | 4.0% | SCHEDULE 13G/A ↗ |
| May 14, 2026 | SCHEDULE 13G/A (amended) | CEG Constellation Energy Corporation | Capital International Investors | 11.94M | 3.3% | SCHEDULE 13G/A ↗ |
| Apr 29, 2026 | SCHEDULE 13G | CEG Constellation Energy Corporation | Vanguard Capital Management | 23.17M | 6.4% | SCHEDULE 13G ↗ |
| Mar 26, 2026 | SCHEDULE 13G/A (amended) | CEG Constellation Energy Corporation | The Vanguard Group | 0 | 0.0% | SCHEDULE 13G/A ↗ |
| Feb 13, 2026 | SCHEDULE 13G/A (amended) | CEG Constellation Energy Corporation | Capital International Investors | 17.17M | 5.5% | SCHEDULE 13G/A ↗ |
| Jan 14, 2026 | SCHEDULE 13G | CEG Constellation Energy Corporation | ECP Calpine Rollover Fund, LP | 618,188 | 0.2% | SCHEDULE 13G ↗ |
| Jan 14, 2026 | SCHEDULE 13G | CEG Constellation Energy Corporation | ECP Calpine Continuation Fund, LP | 7.27M | 2.0% | SCHEDULE 13G ↗ |
| Jan 14, 2026 | SCHEDULE 13G | CEG Constellation Energy Corporation | ECP Calpine Fund GP, LP | 8.59M | 2.4% | SCHEDULE 13G ↗ |
| Jan 14, 2026 | SCHEDULE 13G | CEG Constellation Energy Corporation | ECP IV-D Volt Holdings, LP | 1.18M | 0.3% | SCHEDULE 13G ↗ |
| Jan 14, 2026 | SCHEDULE 13G | CEG Constellation Energy Corporation | ECP IV-C Volt Holdings, LP | 450,142 | 0.1% | SCHEDULE 13G ↗ |
| Jan 14, 2026 | SCHEDULE 13G | CEG Constellation Energy Corporation | ECP IV-B Volt Holdings, LP | 91,013 | 0.0% | SCHEDULE 13G ↗ |
| Jan 14, 2026 | SCHEDULE 13G | CEG Constellation Energy Corporation | ECP IV-A Volt Holdings, LP | 543,086 | 0.1% | SCHEDULE 13G ↗ |
| Jan 14, 2026 | SCHEDULE 13G | CEG Constellation Energy Corporation | ECP Checkerspot Holdings, LP | 3.72M | 1.0% | SCHEDULE 13G ↗ |
| Jan 14, 2026 | SCHEDULE 13G | CEG Constellation Energy Corporation | ECP III-D Volt Holdings, LP | 1.84M | 0.5% | SCHEDULE 13G ↗ |
| Jan 14, 2026 | SCHEDULE 13G | CEG Constellation Energy Corporation | ECP III-C Volt Holdings, LP | 1.49M | 0.4% | SCHEDULE 13G ↗ |
| Jan 14, 2026 | SCHEDULE 13G | CEG Constellation Energy Corporation | ECP III-B Volt Holdings, LLC | 434,667 | 0.1% | SCHEDULE 13G ↗ |
| Jan 14, 2026 | SCHEDULE 13G | CEG Constellation Energy Corporation | ECP III-A Volt Holdings, LLC | 3.60M | 1.0% | SCHEDULE 13G ↗ |
| Jan 14, 2026 | SCHEDULE 13G | CEG Constellation Energy Corporation | ECP III Volt Holdings, LLC | 106,918 | 0.0% | SCHEDULE 13G ↗ |
| Jan 14, 2026 | SCHEDULE 13G | CEG Constellation Energy Corporation | ECP Calpine GP, LLC | 8.59M | 2.4% | SCHEDULE 13G ↗ |
| Jan 14, 2026 | SCHEDULE 13G | CEG Constellation Energy Corporation | Energy Capital Partners IV, LLC | 2.27M | 0.6% | SCHEDULE 13G ↗ |
| Jan 14, 2026 | SCHEDULE 13G | CEG Constellation Energy Corporation | Energy Capital Partners III, LLC | 11.18M | 3.1% | SCHEDULE 13G ↗ |
| Jan 14, 2026 | SCHEDULE 13G | CEG Constellation Energy Corporation | ECP ControlCo, LLC | 22.04M | 6.1% | SCHEDULE 13G ↗ |
| Feb 12, 2025 | SCHEDULE 13G/A (amended) | CEG Constellation Energy Corporation | Abigail P. Johnson | 14.34M | 4.6% | SCHEDULE 13G/A ↗ |
| Feb 12, 2025 | SCHEDULE 13G/A (amended) | CEG Constellation Energy Corporation | FMR LLC | 14.34M | 4.6% | SCHEDULE 13G/A ↗ |
40 items, most recent first (up to 50). Every row links to its original filing. Updated Nov 15, 2026, 6:27 PM EST.
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