--- title: "Acadia Healthcare Shares Jump on Activist Investor Stake Report" description: "Acadia Healthcare shares increased by 5% following a report from the Financial Times that activist investor Engine Capital has acquired a 3% stake in the company. Engine Capital is pushing for signifi" type: "news" locale: "en" url: "https://longbridge.com/en/news/258718701.md" published_at: "2025-09-24T13:14:10.000Z" --- # Acadia Healthcare Shares Jump on Activist Investor Stake Report > Acadia Healthcare shares increased by 5% following a report from the Financial Times that activist investor Engine Capital has acquired a 3% stake in the company. Engine Capital is pushing for significant corporate changes while federal investigations are ongoing. Shares of Acadia Healthcare Company (NASDAQ:ACHC) rose 5% on Wednesday after the Financial Times reported that activist investor Engine Capital has acquired a stake in the mental health services provider. The report indicates that Engine Capital now holds roughly 3% of Acadia’s shares and is advocating for major corporate changes amid ongoing federal investigations. In \[…\] ### Related Stocks - [ACHC.US - Acadia Healthcare](https://longbridge.com/en/quote/ACHC.US.md) ## Related News & Research | Title | Description | URL | |-------|-------------|-----| | Acadia Healthcare to Participate in March Investor Conferences \| ACHC Stock News | Acadia Healthcare Company, Inc. (NASDAQ: ACHC) will participate in three investor conferences in March 2026. The events | [Link](https://longbridge.com/en/news/276462426.md) | | Hedge Fund Manager David Einhorn Flags Acadia Healthcare As Recent Buy | Hedge fund manager David Einhorn has recently bought shares of Acadia Healthcare Company Inc. (ACHC), leading to a 15% s | [Link](https://longbridge.com/en/news/275646447.md) | | Public Sector Pension Investment Board Takes $8.92 Million Position in Acadia Healthcare Company, Inc. $ACHC | Public Sector Pension Investment Board has acquired a new position in Acadia Healthcare Company, Inc. (NASDAQ: ACHC) wor | [Link](https://longbridge.com/en/news/276113432.md) | | King Luther Capital Management Corp Has $4.59 Million Position in UnitedHealth Group Incorporated $UNH | King Luther Capital Management Corp reduced its stake in UnitedHealth Group (NYSE:UNH) by 58% in Q3, holding 13,303 shar | [Link](https://longbridge.com/en/news/276511787.md) | | Jim Snow 2.0: Mamdani Requires Snow-Shovel Volunteers Show Two Forms Of ID, Social Security Card | New York City Mayor Zohran Mamdani has called for volunteers to shovel snow as a blizzard approaches, requiring them to | [Link](https://longbridge.com/en/news/276520974.md) | --- > **Disclaimer**: This article is for reference only and does not constitute any investment advice.