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 ACHC
| 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 8, 2026 | SCHEDULE 13G | ACHC Acadia Healthcare Company, Inc. | Dimensional Fund Advisors LP | 4.70M | 5.0% | SCHEDULE 13G ↗ |
| Aug 14, 2026 | SCHEDULE 13G/A (amended) | ACHC Acadia Healthcare Company, Inc. | Eric Khrom | 653,914 | 0.7% | SCHEDULE 13G/A ↗ |
| Aug 14, 2026 | SCHEDULE 13G/A (amended) | ACHC Acadia Healthcare Company, Inc. | Khrom Capital Management LLC | 647,006 | 0.7% | SCHEDULE 13G/A ↗ |
| Aug 14, 2026 | SCHEDULE 13G/A (amended) | ACHC Acadia Healthcare Company, Inc. | Khrom Investments Fund, LP | 647,006 | 0.7% | SCHEDULE 13G/A ↗ |
| Aug 13, 2026 | SCHEDULE 13G/A (amended) | ACHC Acadia Healthcare Company, Inc. | Wellington Management Company LLP | 5.73M | 5.9% | SCHEDULE 13G/A ↗ |
| Aug 13, 2026 | SCHEDULE 13G/A (amended) | ACHC Acadia Healthcare Company, Inc. | Wellington Investment Advisors Holdings LLP | 5.73M | 6.2% | SCHEDULE 13G/A ↗ |
| Aug 13, 2026 | SCHEDULE 13G/A (amended) | ACHC Acadia Healthcare Company, Inc. | Wellington Group Holdings LLP | 5.73M | 6.2% | SCHEDULE 13G/A ↗ |
| Aug 13, 2026 | SCHEDULE 13G/A (amended) | ACHC Acadia Healthcare Company, Inc. | Wellington Management Group LLP | 5.73M | 6.2% | SCHEDULE 13G/A ↗ |
| Aug 6, 2026 | SCHEDULE 13G/A (amended) | ACHC Acadia Healthcare Company, Inc. | Abigail P. Johnson | 5.02M | 5.5% | SCHEDULE 13G/A ↗ |
| Aug 6, 2026 | SCHEDULE 13G/A (amended) | ACHC Acadia Healthcare Company, Inc. | FMR LLC | 5.02M | 5.5% | SCHEDULE 13G/A ↗ |
| Jul 27, 2026 | SCHEDULE 13G/A (amended) | ACHC Acadia Healthcare Company, Inc. | BlackRock, Inc. | 13.83M | 15.0% | SCHEDULE 13G/A ↗ |
| May 15, 2026 | SCHEDULE 13G/A (amended) | ACHC Acadia Healthcare Company, Inc. | Eric Khrom | 5.20M | 5.7% | SCHEDULE 13G/A ↗ |
| May 15, 2026 | SCHEDULE 13G/A (amended) | ACHC Acadia Healthcare Company, Inc. | Khrom Capital Management LLC | 5.19M | 5.7% | SCHEDULE 13G/A ↗ |
| May 15, 2026 | SCHEDULE 13G/A (amended) | ACHC Acadia Healthcare Company, Inc. | Khrom Investments Fund, LP | 5.19M | 5.7% | SCHEDULE 13G/A ↗ |
| May 15, 2026 | SCHEDULE 13G/A (amended) | ACHC Acadia Healthcare Company, Inc. | Wellington Management Company LLP | 9.07M | 9.6% | SCHEDULE 13G/A ↗ |
| May 15, 2026 | SCHEDULE 13G/A (amended) | ACHC Acadia Healthcare Company, Inc. | Wellington Investment Advisors Holdings LLP | 9.07M | 9.9% | SCHEDULE 13G/A ↗ |
| May 15, 2026 | SCHEDULE 13G/A (amended) | ACHC Acadia Healthcare Company, Inc. | Wellington Group Holdings LLP | 9.07M | 9.9% | SCHEDULE 13G/A ↗ |
| May 15, 2026 | SCHEDULE 13G/A (amended) | ACHC Acadia Healthcare Company, Inc. | Wellington Management Group LLP | 9.07M | 9.9% | SCHEDULE 13G/A ↗ |
| May 11, 2026 | SCHEDULE 13G/A (amended) | ACHC Acadia Healthcare Company, Inc. | Goldman Sachs & Co. LLC | 1.46M | 1.6% | SCHEDULE 13G/A ↗ |
| May 11, 2026 | SCHEDULE 13G/A (amended) | ACHC Acadia Healthcare Company, Inc. | The Goldman Sachs Group, Inc. | 1.46M | 1.6% | SCHEDULE 13G/A ↗ |
| Apr 29, 2026 | SCHEDULE 13G | ACHC Acadia Healthcare Company, Inc. | Vanguard Capital Management | 4.84M | 5.3% | SCHEDULE 13G ↗ |
| Apr 28, 2026 | SCHEDULE 13G | ACHC Acadia Healthcare Company, Inc. | Vanguard Portfolio Management | 5.08M | 5.5% | SCHEDULE 13G ↗ |
| Mar 26, 2026 | SCHEDULE 13G/A (amended) | ACHC Acadia Healthcare Company, Inc. | The Vanguard Group | 0 | 0.0% | SCHEDULE 13G/A ↗ |
| Mar 11, 2026 | SCHEDULE 13G | ACHC Acadia Healthcare Company, Inc. | Eric Khrom | 7.46M | 8.1% | SCHEDULE 13G ↗ |
| Mar 11, 2026 | SCHEDULE 13G | ACHC Acadia Healthcare Company, Inc. | Khrom Capital Management LLC | 7.45M | 8.1% | SCHEDULE 13G ↗ |
| Mar 11, 2026 | SCHEDULE 13G | ACHC Acadia Healthcare Company, Inc. | Khrom Investments Fund, LP | 7.45M | 8.1% | SCHEDULE 13G ↗ |
| Feb 12, 2026 | SCHEDULE 13G | ACHC Acadia Healthcare Company, Inc. | Goldman Sachs & Co. LLC | 4.71M | 5.1% | SCHEDULE 13G ↗ |
| Feb 12, 2026 | SCHEDULE 13G | ACHC Acadia Healthcare Company, Inc. | The Goldman Sachs Group, Inc. | 4.71M | 5.1% | SCHEDULE 13G ↗ |
| Feb 10, 2026 | SCHEDULE 13G/A (amended) | ACHC Acadia Healthcare Company, Inc. | Wellington Management Company LLP | 11.77M | 12.5% | SCHEDULE 13G/A ↗ |
| Feb 10, 2026 | SCHEDULE 13G/A (amended) | ACHC Acadia Healthcare Company, Inc. | Wellington Investment Advisors Holdings LLP | 11.77M | 12.8% | SCHEDULE 13G/A ↗ |
| Feb 10, 2026 | SCHEDULE 13G/A (amended) | ACHC Acadia Healthcare Company, Inc. | Wellington Group Holdings LLP | 11.77M | 12.8% | SCHEDULE 13G/A ↗ |
| Feb 10, 2026 | SCHEDULE 13G/A (amended) | ACHC Acadia Healthcare Company, Inc. | Wellington Management Group LLP | 11.77M | 12.8% | SCHEDULE 13G/A ↗ |
| Jan 23, 2026 | SCHEDULE 13D/A (amended) | ACHC Acadia Healthcare Company, Inc. | Eric Khrom | 8.13M | 8.8% | SCHEDULE 13D/A ↗ |
| Jan 23, 2026 | SCHEDULE 13D/A (amended) | ACHC Acadia Healthcare Company, Inc. | Khrom Capital Management LLC | 8.12M | 8.8% | SCHEDULE 13D/A ↗ |
| Jan 23, 2026 | SCHEDULE 13D/A (amended) | ACHC Acadia Healthcare Company, Inc. | Khrom Investments Fund, LP | 8.12M | 8.8% | SCHEDULE 13D/A ↗ |
| Nov 24, 2025 | SCHEDULE 13D/A (amended) | ACHC Acadia Healthcare Company, Inc. | Eric Khrom | 7.15M | 7.7% | SCHEDULE 13D/A ↗ |
| Nov 24, 2025 | SCHEDULE 13D/A (amended) | ACHC Acadia Healthcare Company, Inc. | Khrom Capital Management LLC | 7.14M | 7.7% | SCHEDULE 13D/A ↗ |
| Nov 24, 2025 | SCHEDULE 13D/A (amended) | ACHC Acadia Healthcare Company, Inc. | Khrom Investments Fund, LP | 7.14M | 7.7% | SCHEDULE 13D/A ↗ |
| Oct 6, 2025 | SCHEDULE 13G/A (amended) | ACHC Acadia Healthcare Company, Inc. | Wellington Management Company LLP | 9.42M | 9.9% | SCHEDULE 13G/A ↗ |
| Oct 6, 2025 | SCHEDULE 13G/A (amended) | ACHC Acadia Healthcare Company, Inc. | Wellington Investment Advisors Holdings LLP | 9.42M | 10.2% | SCHEDULE 13G/A ↗ |
| Oct 6, 2025 | SCHEDULE 13G/A (amended) | ACHC Acadia Healthcare Company, Inc. | Wellington Group Holdings LLP | 9.42M | 10.2% | SCHEDULE 13G/A ↗ |
| Oct 6, 2025 | SCHEDULE 13G/A (amended) | ACHC Acadia Healthcare Company, Inc. | Wellington Management Group LLP | 9.42M | 10.2% | SCHEDULE 13G/A ↗ |
| Oct 6, 2025 | SCHEDULE 13G/A (amended) | ACHC Acadia Healthcare Company, Inc. | The Vanguard Group | 9.42M | 10.2% | SCHEDULE 13G/A ↗ |
| Oct 2, 2025 | SCHEDULE 13G/A (amended) | ACHC Acadia Healthcare Company, Inc. | BlackRock, Inc. | 10.35M | 11.2% | SCHEDULE 13G/A ↗ |
| Oct 1, 2025 | SCHEDULE 13D | ACHC Acadia Healthcare Company, Inc. | Eric Khrom | 5.04M | 5.5% | SCHEDULE 13D ↗ |
| Oct 1, 2025 | SCHEDULE 13D | ACHC Acadia Healthcare Company, Inc. | Khrom Capital Management LLC | 5.04M | 5.5% | SCHEDULE 13D ↗ |
| Oct 1, 2025 | SCHEDULE 13D | ACHC Acadia Healthcare Company, Inc. | Khrom Investments Fund, LP | 5.04M | 5.5% | SCHEDULE 13D ↗ |
| Aug 12, 2025 | SCHEDULE 13G/A (amended) | ACHC Acadia Healthcare Company, Inc. | Wellington Management Company LLP | 8.43M | 8.9% | SCHEDULE 13G/A ↗ |
| Aug 12, 2025 | SCHEDULE 13G/A (amended) | ACHC Acadia Healthcare Company, Inc. | Wellington Investment Advisors Holdings LLP | 8.43M | 9.2% | SCHEDULE 13G/A ↗ |
| Aug 12, 2025 | SCHEDULE 13G/A (amended) | ACHC Acadia Healthcare Company, Inc. | Wellington Group Holdings LLP | 8.43M | 9.2% | SCHEDULE 13G/A ↗ |
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