ACADIA HEALTHCARE CO INC (ACHC) Institutional Shareholders
ACADIA HEALTHCARE CO INC (ACHC) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $3.83B in ACHC holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of ACHC tracked by InsiderSet, reporting ownership valued at approximately $441.69M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $423.74M, representing an estimated loss of -4.06% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 44% of the total disclosed ACHC value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Wellington Management Group Llp, Vanguard Portfolio Management Llc, and several other long-term asset managers with concentrated positions in ACADIA HEALTHCARE CO INC (ACHC).
This page ranks the largest institutional ACHC shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
300
Total Reported Value
$3.83B
Largest Holder
Blackrock, Inc.
Largest Position
$441.69M
Insider Transactions (90d)
2
Latest Filing Quarter
Q2 2026
New Institutional Positions
68
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.01% | 14,957,168 | $441,685,152 | $423,736,569 | -$17,948,583 | -4.06% | |
| Wellington Management Group Llp | 0.03% | 5,726,246 | $169,096,045 | $162,224,549 | -$6,871,496 | -4.06% | |
| Vanguard Portfolio Management Llc | 0.01% | 5,369,461 | $158,560,183 | $152,116,830 | -$6,443,353 | -4.06% | |
| Fmr Llc | 0.01% | 5,015,727 | $148,114,405 | $142,095,546 | -$6,018,859 | -4.06% | |
| Carronade Capital Management, Lp | 2.44% | 4,762,635 | $140,641,000 | $134,925,450 | -$5,715,550 | -4.06% | |
| Morgan Stanley | 0.01% | 4,534,269 | $133,896,971 | $128,455,841 | -$5,441,130 | -4.06% | |
| Deerfield Management Company, L.P. | 1.39% | 4,520,000 | $133,475,600 | $128,051,600 | -$5,424,000 | -4.06% | |
| Greenlight Capital | David Einhorn | 3.32% | 4,400,641 | $129,950,928 | $124,670,160 | -$5,280,768 | -4.06% |
| Abrams Bison Investments, Llc | 6.00% | 4,165,000 | $122,992,450 | $117,994,450 | -$4,998,000 | -4.06% | |
| Ubs Group Ag | 0.02% | 4,044,500 | $119,434,085 | $114,580,685 | -$4,853,400 | -4.06% | |
| Dimensional Fund Advisors Lp | 0.02% | 4,013,718 | $118,511,090 | $113,708,631 | -$4,802,459 | -4.05% | |
| Vanguard Capital Management Llc | 0.00% | 4,010,582 | $118,432,486 | $113,619,788 | -$4,812,698 | -4.06% | |
| State Street Corp | 0.00% | 3,893,124 | $114,812,378 | $110,292,203 | -$4,520,175 | -3.94% | |
| Jefferies Financial Group Inc. | 0.98% | 3,605,067 | $106,457,629 | $102,131,548 | -$4,326,081 | -4.06% | |
| American Century Companies Inc | 0.04% | 2,908,887 | $85,899,433 | $82,408,769 | -$3,490,664 | -4.06% | |
| Goldman Sachs Group Inc | 0.01% | 2,872,128 | $84,813,929 | $81,367,386 | -$3,446,543 | -4.06% | |
| Citadel Advisors Llc | 0.05% | 2,665,603 | $78,715,257 | $75,516,533 | -$3,198,724 | -4.06% | |
| Geode Capital Management, Llc | 0.00% | 2,465,247 | $72,812,489 | $69,840,448 | -$2,972,041 | -4.08% | |
| Mak Capital One Llc | 10.07% | 2,432,962 | $71,845,368 | $68,925,813 | -$2,919,555 | -4.06% | |
| Neuberger Berman Group Llc | 0.04% | 2,238,423 | $65,796,677 | $63,414,524 | -$2,382,153 | -3.62% | |
| Charles Schwab Investment Management Inc | 0.01% | 2,062,966 | $60,919,386 | $58,443,827 | -$2,475,559 | -4.06% | |
| Vaughan Nelson Investment Management, L.P. | 0.47% | 1,807,697 | $53,381,293 | $51,212,056 | -$2,169,237 | -4.06% | |
| Invesco Ltd. | 0.00% | 1,790,454 | $52,872,107 | $50,723,562 | -$2,148,545 | -4.06% | |
| P2 Capital Partners, Llc | 21.34% | 1,774,484 | $52,400,513 | $50,271,132 | -$2,129,381 | -4.06% | |
| Deutsche Bank Ag\ | 0.01% | 1,684,607 | $49,746,445 | $47,724,916 | -$2,021,529 | -4.06% | |
| Frontier Capital Management Co Llc | 0.46% | 1,672,857 | $49,399,461 | $47,392,039 | -$2,007,422 | -4.06% | |
| Mangrove Partners Im, Llc | 2.71% | 1,396,059 | $41,225,622 | $39,550,351 | -$1,675,271 | -4.06% | |
| Braidwell Lp | 1.25% | 1,141,477 | $33,707,816 | $32,338,043 | -$1,369,773 | -4.06% | |
| Northern Trust Corp | 0.00% | 1,130,639 | $33,387,770 | $32,031,003 | -$1,356,767 | -4.06% | |
| Brown Advisory Inc | 0.05% | 1,108,390 | $32,730,753 | $31,400,689 | -$1,330,064 | -4.06% | |
| Bnp Paribas Financial Markets | 0.01% | 857,730 | $25,328,767 | $24,299,491 | -$1,029,276 | -4.06% | |
| Ameriprise Financial Inc | 0.01% | 845,879 | $24,978,806 | $23,963,752 | -$1,015,054 | -4.06% | |
| Barclays Plc | 0.01% | 821,340 | $24,254,170 | $23,268,562 | -$985,608 | -4.06% | |
| Principal Financial Group Inc | 0.01% | 813,417 | $24,020,204 | $23,044,104 | -$976,100 | -4.06% | |
| Bank Of America Corp | 0.00% | 731,656 | $21,605,803 | $20,727,814 | -$877,989 | -4.06% | |
| Khrom Capital Management Llc | 1.60% | 647,006 | $19,106,087 | $18,329,680 | -$776,407 | -4.06% | |
| Freestone Grove Partners Lp | 0.12% | 643,486 | $19,002,142 | $18,229,958 | -$772,184 | -4.06% | |
| Vanguard Fiduciary Trust Co | 0.00% | 604,796 | $17,859,626 | $17,133,871 | -$725,755 | -4.06% | |
| Allianz Asset Management Gmbh | 0.02% | 578,942 | $17,096,157 | $16,401,427 | -$694,730 | -4.06% | |
| Bank Of New York Mellon Corp | 0.00% | 559,436 | $16,520,147 | $15,848,822 | -$671,325 | -4.06% | |
| Citigroup Inc | 0.01% | 553,412 | $16,342,257 | $15,678,162 | -$664,095 | -4.06% | |
| Pfm Health Sciences, Lp | 1.35% | 524,934 | $15,501,301 | $14,871,380 | -$629,921 | -4.06% | |
| Aberdeen Group Plc | 0.02% | 522,963 | $15,443,097 | $14,815,542 | -$627,555 | -4.06% | |
| Macquarie Group Ltd | 0.07% | 522,500 | $15,429,425 | $14,802,425 | -$627,000 | -4.06% | |
| Toronto Dominion Bank | 0.02% | 499,981 | $14,764,440 | $14,164,462 | -$599,978 | -4.06% | |
| Bank Of Nova Scotia | 0.02% | 495,632 | $14,636,013 | $14,041,255 | -$594,758 | -4.06% | |
| Segall Bryant & Hamill, Llc | 0.16% | 468,207 | $13,826,153 | $13,264,304 | -$561,849 | -4.06% | |
| Palisade Capital Management, Lp | 0.59% | 456,960 | $13,494,029 | $12,945,677 | -$548,352 | -4.06% | |
| Aristotle Capital Boston, Llc | 0.86% | 435,076 | $12,847,811 | $12,325,703 | -$522,108 | -4.06% | |
| Hawk Ridge Capital Management Lp | 0.40% | 418,017 | $12,344,042 | $11,842,422 | -$501,620 | -4.06% |
Frequently asked questions about ACHC
Who owns the most ACHC stock?
The largest holders of ACHC are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for ACADIA HEALTHCARE CO INC (ACHC).
Is ACHC widely held by superinvestors?
Many widely followed stocks like ACHC appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly ACHC is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.