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 TAC
| 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 |
|---|---|---|---|---|---|---|
| May 13, 2026 | SCHEDULE 13G | TAC TransAlta Corporation | Bmo Nesbitt Burns Inc. | 4.03M | 1.4% | SCHEDULE 13G ↗ |
| May 13, 2026 | SCHEDULE 13G | TAC TransAlta Corporation | Bmo Asset Management Inc. | 4.71M | 1.6% | SCHEDULE 13G ↗ |
| May 13, 2026 | SCHEDULE 13G | TAC TransAlta Corporation | Bmo Private Investment Counsel Inc. | 3,668 | 0.0% | SCHEDULE 13G ↗ |
| May 13, 2026 | SCHEDULE 13G | TAC TransAlta Corporation | Bmo Nesbitt Burns Securities Ltd. | 31,477 | 0.0% | SCHEDULE 13G ↗ |
| May 13, 2026 | SCHEDULE 13G | TAC TransAlta Corporation | Bmo Nesbitt Burns Inc. Wealth Management | 4.79M | 1.6% | SCHEDULE 13G ↗ |
| May 13, 2026 | SCHEDULE 13G | TAC TransAlta Corporation | Bank of Montreal Holding Inc. | 8.81M | 3.0% | SCHEDULE 13G ↗ |
| May 13, 2026 | SCHEDULE 13G | TAC TransAlta Corporation | Bank of Montreal | 17.76M | 6.0% | SCHEDULE 13G ↗ |
| May 6, 2026 | SCHEDULE 13G/A (amended) | TAC TransAlta Corporation | Abigail P. Johnson | 13.60M | 4.6% | SCHEDULE 13G/A ↗ |
| May 6, 2026 | SCHEDULE 13G/A (amended) | TAC TransAlta Corporation | FMR LLC | 13.60M | 4.6% | SCHEDULE 13G/A ↗ |
| Feb 13, 2026 | SCHEDULE 13G/A (amended) | TAC TransAlta Corporation | Royal Bank of Canada | 22.96M | 7.7% | SCHEDULE 13G/A ↗ |
| Feb 5, 2026 | SCHEDULE 13G/A (amended) | TAC TransAlta Corporation | Abigail P. Johnson | 23.71M | 8.0% | SCHEDULE 13G/A ↗ |
| Feb 5, 2026 | SCHEDULE 13G/A (amended) | TAC TransAlta Corporation | FMR LLC | 23.71M | 8.0% | SCHEDULE 13G/A ↗ |
| Nov 14, 2025 | SCHEDULE 13G/A (amended) | TAC TransAlta Corporation | Israel A. Englander | 13.12M | 4.4% | SCHEDULE 13G/A ↗ |
| Nov 14, 2025 | SCHEDULE 13G/A (amended) | TAC TransAlta Corporation | Millennium Group Management LLC | 13.12M | 4.4% | SCHEDULE 13G/A ↗ |
| Nov 14, 2025 | SCHEDULE 13G/A (amended) | TAC TransAlta Corporation | Millennium Management LLC | 13.12M | 4.4% | SCHEDULE 13G/A ↗ |
| Nov 14, 2025 | SCHEDULE 13G/A (amended) | TAC TransAlta Corporation | Integrated Core Strategies (Asia) Pte. Ltd. | 11.67M | 3.9% | SCHEDULE 13G/A ↗ |
| Nov 13, 2025 | SCHEDULE 13G/A (amended) | TAC TransAlta Corporation | Goldman Sachs & Co. LLC | 7.05M | 2.4% | SCHEDULE 13G/A ↗ |
| Nov 13, 2025 | SCHEDULE 13G/A (amended) | TAC TransAlta Corporation | The Goldman Sachs Group, Inc. | 7.05M | 2.4% | SCHEDULE 13G/A ↗ |
| Nov 7, 2025 | SCHEDULE 13G/A (amended) | TAC TransAlta Corporation | Abigail P. Johnson | 32.25M | 10.9% | SCHEDULE 13G/A ↗ |
| Nov 7, 2025 | SCHEDULE 13G/A (amended) | TAC TransAlta Corporation | FMR LLC | 32.25M | 10.9% | SCHEDULE 13G/A ↗ |
| Nov 5, 2025 | SCHEDULE 13G/A (amended) | TAC TransAlta Corporation | Abigail P. Johnson | 22.62M | 7.6% | SCHEDULE 13G/A ↗ |
| Nov 5, 2025 | SCHEDULE 13G/A (amended) | TAC TransAlta Corporation | FMR LLC | 22.62M | 7.6% | SCHEDULE 13G/A ↗ |
| Oct 7, 2025 | SCHEDULE 13G/A (amended) | TAC TransAlta Corporation | Bank of Nova Scotia | 13.87M | 4.7% | SCHEDULE 13G/A ↗ |
| Aug 14, 2025 | SCHEDULE 13G | TAC TransAlta Corporation | Goldman Sachs & Co. LLC | 16.35M | 5.5% | SCHEDULE 13G ↗ |
| Aug 14, 2025 | SCHEDULE 13G | TAC TransAlta Corporation | The Goldman Sachs Group, Inc. | 16.35M | 5.5% | SCHEDULE 13G ↗ |
| Aug 6, 2025 | SCHEDULE 13G | TAC TransAlta Corporation | Abigail P. Johnson | 16.92M | 5.7% | SCHEDULE 13G ↗ |
| Aug 6, 2025 | SCHEDULE 13G | TAC TransAlta Corporation | FMR LLC | 16.92M | 5.7% | SCHEDULE 13G ↗ |
| Jul 9, 2025 | SCHEDULE 13G | TAC TransAlta Corporation | David Rosen | 15.95M | 5.4% | SCHEDULE 13G ↗ |
| Jul 9, 2025 | SCHEDULE 13G | TAC TransAlta Corporation | Rubric Capital Management LP | 15.95M | 5.4% | SCHEDULE 13G ↗ |
| May 7, 2025 | SCHEDULE 13G | TAC TransAlta Corporation | Bank of Nova Scotia | 16.52M | 5.5% | SCHEDULE 13G ↗ |
| Apr 15, 2025 | SCHEDULE 13G/A (amended) | TAC TransAlta Corporation | Israel A. Englander | 17.42M | 5.8% | SCHEDULE 13G/A ↗ |
| Apr 15, 2025 | SCHEDULE 13G/A (amended) | TAC TransAlta Corporation | Millennium Group Management LLC | 17.42M | 5.8% | SCHEDULE 13G/A ↗ |
| Apr 15, 2025 | SCHEDULE 13G/A (amended) | TAC TransAlta Corporation | Millennium Management LLC | 17.42M | 5.8% | SCHEDULE 13G/A ↗ |
| Apr 15, 2025 | SCHEDULE 13G/A (amended) | TAC TransAlta Corporation | Integrated Core Strategies (Asia) Pte. Ltd. | 14.98M | 5.0% | SCHEDULE 13G/A ↗ |
| Feb 25, 2025 | SCHEDULE 13G | TAC TransAlta Corporation | Israel A. Englander | 15.20M | 5.1% | SCHEDULE 13G ↗ |
| Feb 25, 2025 | SCHEDULE 13G | TAC TransAlta Corporation | Millennium Group Management LLC | 15.20M | 5.1% | SCHEDULE 13G ↗ |
| Feb 25, 2025 | SCHEDULE 13G | TAC TransAlta Corporation | Millennium Management LLC | 15.20M | 5.1% | SCHEDULE 13G ↗ |
| Feb 12, 2025 | SCHEDULE 13G/A (amended) | TAC TransAlta Corporation | Royal Bank of Canada | 26.15M | 8.8% | SCHEDULE 13G/A ↗ |
| Jan 8, 2025 | SCHEDULE 13D/A (amended) | TAC TransAlta Corporation | Big Timber Holdings L.P. | 26.92M | 9.0% | SCHEDULE 13D/A ↗ |
| Jan 8, 2025 | SCHEDULE 13D/A (amended) | TAC TransAlta Corporation | Brookfield Infrastructure Group Limited | 26.92M | 9.0% | SCHEDULE 13D/A ↗ |
| Jan 8, 2025 | SCHEDULE 13D/A (amended) | TAC TransAlta Corporation | Bif IV CDN GP Ltd. | 26.92M | 9.0% | SCHEDULE 13D/A ↗ |
| Jan 8, 2025 | SCHEDULE 13D/A (amended) | TAC TransAlta Corporation | Bif IV CDN GP LP | 26.92M | 9.0% | SCHEDULE 13D/A ↗ |
| Jan 8, 2025 | SCHEDULE 13D/A (amended) | TAC TransAlta Corporation | Bif IV CDN Split LP | 26.92M | 9.0% | SCHEDULE 13D/A ↗ |
| Jan 8, 2025 | SCHEDULE 13D/A (amended) | TAC TransAlta Corporation | Bif IV Ltip Canada Splitter LP | 16.61M | 5.6% | SCHEDULE 13D/A ↗ |
| Jan 8, 2025 | SCHEDULE 13D/A (amended) | TAC TransAlta Corporation | Bif IV Eagle NR Carry LP | 16.61M | 5.6% | SCHEDULE 13D/A ↗ |
| Jan 8, 2025 | SCHEDULE 13D/A (amended) | TAC TransAlta Corporation | Eagle Canada Common Holdings LP | 10.32M | 3.5% | SCHEDULE 13D/A ↗ |
| Jan 8, 2025 | SCHEDULE 13D/A (amended) | TAC TransAlta Corporation | Bam Partners Trust | 26.92M | 9.0% | SCHEDULE 13D/A ↗ |
| Jan 8, 2025 | SCHEDULE 13D/A (amended) | TAC TransAlta Corporation | BROOKFIELD Corp /ON/ | 26.92M | 9.0% | SCHEDULE 13D/A ↗ |
48 items, most recent first (up to 50). Every row links to its original filing. Updated Nov 15, 2026, 6:22 PM EST.
Download CSV The rows of this feed, with the filters above. A download holds at most 10,000 rows; narrow the filters to get a smaller slice.
Other feeds: Congressional trades · Executive-branch trades · Bills in Congress · Roll-call votes · Corporate PAC donations · Lobbying · Capitol Hires · Lobbying and contracts · Government contracts · Insider trades · Planned insider sales · Executive pay · Institutional holdings (13F) · Short interest · Fails to deliver · Daily short volume · Wikipedia page views · App store ratings · H-1B visa applications · Stock splits · 8-K events · IPO filings · Deals · Private placements (Form D) · Merger clearances (HSR) · Layoff notices (WARN) · SEC enforcement · Patents · Clinical trial updates · FDA approvals and clearances