ACADIA HEALTHCARE COMPANY IN

Ticker: ACHC CUSIP: 00404A109 Class: Common Stock

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0001081019)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 84,324 Value ($000) $1,197 Avg Close $18.92 Range $12.63 - $27.50

Q3 2025

Shares 90,923 Value ($000) $2,251 Avg Close $22.31 Range $17.13 - $25.04

Q2 2025

Shares 85,784 Value ($000) $1,946 Avg Close $23.70 Range $20.36 - $30.97

Q1 2025

Shares 85,312 Value ($000) $2,587 Avg Close $38.10 Range $27.61 - $47.08

Q4 2024

Shares 86,761 Value ($000) $3,440 Avg Close $45.11 Range $36.50 - $63.41

Q3 2024

Shares 87,679 Value ($000) $5,560 Avg Close $72.20 Range $53.22 - $82.41

Q2 2024

Shares 90,120 Value ($000) $6,087 Avg Close $69.83 Range $62.04 - $79.44

Q1 2024

Shares 92,063 Value ($000) $7,293 Avg Close $81.78 Range $75.00 - $87.77

Q4 2023

Shares 96,978 Value ($000) $7,541 Avg Close $74.02 Range $66.49 - $79.86

Q3 2023

Shares 101,352 Value ($000) $7,126 Avg Close $74.72 Range $67.63 - $81.33

Q2 2023

Shares 111,102 Value ($000) $8,848 Avg Close $72.27 Range $67.07 - $80.17

Q1 2023

Shares 113,256 Value ($000) $8,183 Avg Close $77.95 Range $66.87 - $86.37

Q4 2022

Shares 114,799 Value ($000) $9,450 Avg Close $82.44 Range $73.58 - $89.85

Q3 2022

Shares 113,349 Value ($000) $8,862 Avg Close $79.93 Range $66.89 - $86.75

Q2 2022

Shares 115,086 Value ($000) $7,783 Avg Close $69.76 Range $63.20 - $76.69

Q1 2022

Shares 110,839 Value ($000) $7,263 Avg Close $58.09 Range $50.07 - $68.47

Q4 2021

Shares 120,709 Value ($000) $7,327 Avg Close $59.63 Range $53.67 - $66.77

Q3 2021

Shares 145,813 Value ($000) $9,300 Avg Close $63.13 Range $56.70 - $68.65

Q2 2021

Shares 150,525 Value ($000) $9,445 Avg Close $62.71 Range $55.55 - $68.00

Q1 2021

Shares 152,842 Value ($000) $8,733 Avg Close $54.11 Range $48.62 - $61.00

Q4 2020

Shares 153,029 Value ($000) $7,691 Avg Close $39.86 Range $27.96 - $50.99

Q3 2020

Shares 150,621 Value ($000) $4,440 Avg Close $29.03 Range $24.01 - $32.95

Q2 2020

Shares 147,631 Value ($000) $3,708 Avg Close $24.96 Range $15.12 - $31.50

Q1 2020

Shares 144,676 Value ($000) $2,655 Avg Close $28.63 Range $11.09 - $35.30

Q4 2019

Shares 134,464 Value ($000) $4,467 Avg Close $31.34 Range $28.36 - $33.69

Q3 2019

Shares 138,464 Value ($000) $4,303 Avg Close $30.45 Range $25.53 - $35.40

Q2 2019

Shares 138,088 Value ($000) $4,826 Avg Close $32.33 Range $28.08 - $35.15

Q1 2019

Shares 176,882 Value ($000) $5,184 Avg Close $28.33 Range $25.13 - $31.29

Q4 2018

Shares 229,879 Value ($000) $5,910 Avg Close $34.61 Range $24.27 - $45.35

Q3 2018

Shares 141,107 Value ($000) $4,967 Avg Close $39.85 Range $34.34 - $45.02

Q2 2018

Shares 141,831 Value ($000) $5,802 Avg Close $40.33 Range $35.19 - $44.73

Q1 2018

Shares 127,935 Value ($000) $5,012 Avg Close $36.67 Range $32.06 - $42.27

Q4 2017

Shares 132,080 Value ($000) $4,310 Avg Close $34.65 Range $26.92 - $48.35

Q3 2017

Shares 131,317 Value ($000) $6,272 Avg Close $48.74 Range $44.26 - $54.34

Q2 2017

Shares 144,727 Value ($000) $7,147 Avg Close $44.29 Range $40.37 - $49.99

Q1 2017

Shares 147,707 Value ($000) $6,440 Avg Close $40.58 Range $32.69 - $47.39

Q4 2016

Shares 154,307 Value ($000) $5,108 Avg Close $38.81 Range $32.54 - $50.18

Q3 2016

Shares 158,307 Value ($000) $7,844 Avg Close $52.09 Range $46.99 - $57.29

Q2 2016

Shares 157,007 Value ($000) $8,698 Avg Close $58.49 Range $50.30 - $65.00

Q1 2016

Shares 127,537 Value ($000) $7,029 Avg Close $57.07 Range $49.77 - $65.89

Q4 2015

Shares 95,733 Value ($000) $5,979 Avg Close $65.14 Range $54.41 - $74.77

Q3 2015

Shares 94,294 Value ($000) $6,249 Avg Close $76.93 Range $58.70 - $85.62

Q2 2015

Shares 94,394 Value ($000) $7,394 Avg Close $71.98 Range $64.91 - $78.51

Q1 2015

Shares 78,361 Value ($000) $5,611 Avg Close $64.13 Range $55.57 - $73.81

Q4 2014

Shares 79,661 Value ($000) $4,876 Avg Close $58.20 Range $46.87 - $66.88

Q3 2014

Shares 78,924 Value ($000) $3,828 Avg Close $48.89 Range $43.45 - $52.37

Q2 2014

Shares 66,343 Value ($000) $3,019 Avg Close $43.95 Range $38.76 - $49.29

Q1 2014

Shares 64,343 Value ($000) $2,903 Avg Close $49.33 Range $44.00 - $53.87

Q4 2013

Shares 64,143 Value ($000) $3,036 Avg Close $43.45 Range $37.88 - $49.14

Q3 2013

Shares 63,643 Value ($000) $2,509 Avg Close $37.12 Range $30.70 - $41.30

Q2 2013

Shares 61,717 Value ($000) $2,041 Avg Close $32.45 Range $27.85 - $35.78

Q1 2013

Shares 46,888 Value ($000) $1,378 Avg Close $26.60 Range $22.64 - $29.50

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	84,324	$1,197	$18.92	$12.63 - $27.50
Q3 2025	90,923	$2,251	$22.31	$17.13 - $25.04
Q2 2025	85,784	$1,946	$23.70	$20.36 - $30.97
Q1 2025	85,312	$2,587	$38.10	$27.61 - $47.08
Q4 2024	86,761	$3,440	$45.11	$36.50 - $63.41
Q3 2024	87,679	$5,560	$72.20	$53.22 - $82.41
Q2 2024	90,120	$6,087	$69.83	$62.04 - $79.44
Q1 2024	92,063	$7,293	$81.78	$75.00 - $87.77
Q4 2023	96,978	$7,541	$74.02	$66.49 - $79.86
Q3 2023	101,352	$7,126	$74.72	$67.63 - $81.33
Q2 2023	111,102	$8,848	$72.27	$67.07 - $80.17
Q1 2023	113,256	$8,183	$77.95	$66.87 - $86.37
Q4 2022	114,799	$9,450	$82.44	$73.58 - $89.85
Q3 2022	113,349	$8,862	$79.93	$66.89 - $86.75
Q2 2022	115,086	$7,783	$69.76	$63.20 - $76.69
Q1 2022	110,839	$7,263	$58.09	$50.07 - $68.47
Q4 2021	120,709	$7,327	$59.63	$53.67 - $66.77
Q3 2021	145,813	$9,300	$63.13	$56.70 - $68.65
Q2 2021	150,525	$9,445	$62.71	$55.55 - $68.00
Q1 2021	152,842	$8,733	$54.11	$48.62 - $61.00
Q4 2020	153,029	$7,691	$39.86	$27.96 - $50.99
Q3 2020	150,621	$4,440	$29.03	$24.01 - $32.95
Q2 2020	147,631	$3,708	$24.96	$15.12 - $31.50
Q1 2020	144,676	$2,655	$28.63	$11.09 - $35.30
Q4 2019	134,464	$4,467	$31.34	$28.36 - $33.69
Q3 2019	138,464	$4,303	$30.45	$25.53 - $35.40
Q2 2019	138,088	$4,826	$32.33	$28.08 - $35.15
Q1 2019	176,882	$5,184	$28.33	$25.13 - $31.29
Q4 2018	229,879	$5,910	$34.61	$24.27 - $45.35
Q3 2018	141,107	$4,967	$39.85	$34.34 - $45.02
Q2 2018	141,831	$5,802	$40.33	$35.19 - $44.73
Q1 2018	127,935	$5,012	$36.67	$32.06 - $42.27
Q4 2017	132,080	$4,310	$34.65	$26.92 - $48.35
Q3 2017	131,317	$6,272	$48.74	$44.26 - $54.34
Q2 2017	144,727	$7,147	$44.29	$40.37 - $49.99
Q1 2017	147,707	$6,440	$40.58	$32.69 - $47.39
Q4 2016	154,307	$5,108	$38.81	$32.54 - $50.18
Q3 2016	158,307	$7,844	$52.09	$46.99 - $57.29
Q2 2016	157,007	$8,698	$58.49	$50.30 - $65.00
Q1 2016	127,537	$7,029	$57.07	$49.77 - $65.89
Q4 2015	95,733	$5,979	$65.14	$54.41 - $74.77
Q3 2015	94,294	$6,249	$76.93	$58.70 - $85.62
Q2 2015	94,394	$7,394	$71.98	$64.91 - $78.51
Q1 2015	78,361	$5,611	$64.13	$55.57 - $73.81
Q4 2014	79,661	$4,876	$58.20	$46.87 - $66.88
Q3 2014	78,924	$3,828	$48.89	$43.45 - $52.37
Q2 2014	66,343	$3,019	$43.95	$38.76 - $49.29
Q1 2014	64,343	$2,903	$49.33	$44.00 - $53.87
Q4 2013	64,143	$3,036	$43.45	$37.88 - $49.14
Q3 2013	63,643	$2,509	$37.12	$30.70 - $41.30
Q2 2013	61,717	$2,041	$32.45	$27.85 - $35.78
Q1 2013	46,888	$1,378	$26.60	$22.64 - $29.50