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HowShorted

How shorted is Acadia Healthcare Company, Inc.? ACHC

#69most shorted US stockof 3,805 ranked stocks, more shorted than 98%

23.10%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
−1.16
5 reports (~10 weeks)
−1.34
days to cover
18.79
Aggregate net short position time series for Acadia Healthcare Company, Inc.

Markers along the chart's base: ▲ results announced (an 8-K reporting results was filed) ▲ quarterly or annual report filed. Dates are SEC filing dates; hover a point to see events since the previous settlement.

Days to cover

FINRA's own figure: reported shares short divided by the stock's average daily trading volume, published alongside each settlement. It expresses the short position in days of typical trading rather than as a percentage of the company; the two can move differently.

Aggregate net short position time series for Acadia Healthcare Company, Inc. days to cover

Short interest around results

For each results announcement (an 8-K reporting results, by its SEC filing date), the FINRA settlement before it and the first one after. Settlements fall twice a month, so the two figures can sit up to a month apart and much else changes in between: this shows what was reported, not why.

Reported short interest before and after each results announcement
Results filedSettlement beforeSettlement afterChange
28 Jul 202623.64% 15 Jul 202623.42% 31 Jul 2026−0.22
29 Apr 202624.01% 15 Apr 202625.85% 30 Apr 2026+1.84
25 Feb 202635.18% 13 Feb 202629.85% 27 Feb 2026−5.33
13 Jan 202621.04% 31 Dec 202523.81% 15 Jan 2026+2.77
5 Nov 202512.24% 31 Oct 202512.62% 14 Nov 2025+0.38
5 Aug 202511.34% 31 Jul 202511.67% 15 Aug 2025+0.33
12 May 20259.04% 30 Apr 202510.33% 15 May 2025+1.29
27 Feb 20256.20% 14 Feb 20255.51% 28 Feb 2025−0.69

Fails to deliver

The SEC's fails-to-deliver figure for ACHC: the aggregate net balance of shares that failed to be delivered at each settlement date, published by the SEC twice a month and shown here verbatim for the trailing window. A balance is not a daily flow, and a fail has many ordinary causes; the SEC says it cannot guarantee the accuracy of the data. See what fails to deliver are and the largest balances today.

Last balance on file
52
27 Aug 2026
Highest in window
304,297
1 Oct 2025
Days with a balance
85
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Acadia Healthcare Company, Inc. fails to deliver

Source: U.S. Securities and Exchange Commission, fails-to-deliver data (public domain). Only settlement days with a positive balance appear; the largest balance in the window was 304K shares.

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Sector: Healthcare · By year: 2018 · 2019 · 2020 · 2021 · 2022 · 2023 · 2024 · 2025 · 2026

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 202623.10%−1.16
31 Aug 202624.26%+1.75
14 Aug 202622.51%−0.91
31 Jul 202623.42%−0.22
15 Jul 202623.64%−0.80
30 Jun 202624.44%+2.44
15 Jun 202622.00%−2.90
29 May 202624.90%+0.35
15 May 202624.55%−1.30
30 Apr 202625.85%+1.84
15 Apr 202624.01%+0.06
31 Mar 202623.95%−3.22
13 Mar 202627.17%−2.68
27 Feb 202629.85%−5.33
13 Feb 202635.18%+6.61
30 Jan 202628.57%+4.76
15 Jan 202623.81%+2.77
31 Dec 202521.04%+3.00
15 Dec 202518.04%+2.35
28 Nov 202515.69%+3.07
14 Nov 202512.62%+0.38
31 Oct 202512.24%−0.87
15 Oct 202513.11%−2.23
30 Sep 202515.34%+2.44
15 Sep 202512.90%+0.08
29 Aug 202512.82%+1.15
15 Aug 202511.67%+0.33
31 Jul 202511.34%−0.06
15 Jul 202511.40%−0.50
30 Jun 202511.90%+1.89
13 Jun 202510.01%−0.34
30 May 202510.35%+0.02
15 May 202510.33%+1.29
30 Apr 20259.04%+0.93
15 Apr 20258.11%+0.47
31 Mar 20257.64%+0.62
14 Mar 20257.02%+1.51
28 Feb 20255.51%−0.69
14 Feb 20256.20%+0.26
31 Jan 20255.94%−0.43
15 Jan 20256.37%−0.81
31 Dec 20247.18%−0.19
13 Dec 20247.37%+0.04
29 Nov 20247.33%+0.28
15 Nov 20247.05%+0.60
31 Oct 20246.45%+0.45
15 Oct 20246.00%+1.46
30 Sep 20244.54%+0.52
13 Sep 20244.02%−0.14
30 Aug 20244.16%+0.23
15 Aug 20243.93%+0.11
31 Jul 20243.82%−0.04
15 Jul 20243.86%−0.26
28 Jun 20244.12%−0.20
14 Jun 20244.32%+0.43
31 May 20243.89%+0.36
15 May 20243.53%+0.05
30 Apr 20243.48%−0.34
15 Apr 20243.82%−0.23
28 Mar 20244.05%+0.42
15 Mar 20243.63%+0.62
29 Feb 20243.01%−0.55
15 Feb 20243.56%+0.07
31 Jan 20243.49%+0.10
12 Jan 20243.39%+0.14
29 Dec 20233.25%−0.19
15 Dec 20233.44%+0.25
30 Nov 20233.19%+0.14
15 Nov 20233.05%−0.12
31 Oct 20233.17%+0.03
13 Oct 20233.14%−0.10
29 Sep 20233.24%+0.14
15 Sep 20233.10%−0.06
31 Aug 20233.16%+0.08
15 Aug 20233.08%−0.22
31 Jul 20233.30%−1.13
14 Jul 20234.43%−0.53
30 Jun 20234.96%+0.74
15 Jun 20234.22%+0.16
31 May 20234.06%−0.17
15 May 20234.23%+0.32
28 Apr 20233.91%−0.06
14 Apr 20233.97%−0.07
31 Mar 20234.04%−0.09
15 Mar 20234.13%+0.11
28 Feb 20234.02%+0.04
15 Feb 20233.98%−0.12
31 Jan 20234.10%+0.36
13 Jan 20233.74%+0.04
30 Dec 20223.70%−0.09
15 Dec 20223.79%−0.20
30 Nov 20223.99%−0.09
15 Nov 20224.08%−0.51
31 Oct 20224.59%−0.37
14 Oct 20224.96%+0.19
30 Sep 20224.77%+0.10
15 Sep 20224.67%+0.14
31 Aug 20224.53%+0.51
15 Aug 20224.02%+0.12
29 Jul 20223.90%+0.11
15 Jul 20223.79%+0.05
30 Jun 20223.74%−0.30
15 Jun 20224.04%+0.13
31 May 20223.91%−0.25
13 May 20224.16%+0.16
29 Apr 20224.00%+0.63
14 Apr 20223.37%+0.28
31 Mar 20223.09%−0.53
15 Mar 20223.62%−0.18
28 Feb 20223.80%+0.13
15 Feb 20223.67%+0.35
31 Jan 20223.32%+0.21
14 Jan 20223.11%+0.07
31 Dec 20213.04%−0.04
15 Dec 20213.08%−0.06
30 Nov 20213.14%+0.05
15 Nov 20213.09%0.00
29 Oct 20213.09%−0.17
15 Oct 20213.26%+0.01
30 Sep 20213.25%−0.34
15 Sep 20213.59%+0.15
31 Aug 20213.44%+0.38
13 Aug 20213.06%+0.24
30 Jul 20212.82%−0.34
15 Jul 20213.16%−0.16
30 Jun 20213.32%−0.40
15 Jun 20213.72%−0.18
28 May 20213.90%−0.22
14 May 20214.12%−0.19
30 Apr 20214.31%−0.40
15 Apr 20214.71%−0.07
31 Mar 20214.78%−0.27
15 Mar 20215.05%−0.07
26 Feb 20215.12%−1.00
12 Feb 20216.12%+0.08
29 Jan 20216.04%−0.16
15 Jan 20216.20%−0.18
31 Dec 20206.38%−0.53
15 Dec 20206.91%−1.35
30 Nov 20208.26%−0.35
13 Nov 20208.61%+0.01
30 Oct 20208.60%+0.17
15 Oct 20208.43%−0.61
30 Sep 20209.04%+0.24
15 Sep 20208.80%−0.14
31 Aug 20208.94%−0.22
14 Aug 20209.16%−0.34
31 Jul 20209.50%+0.20
15 Jul 20209.30%−0.36
30 Jun 20209.66%−0.40
15 Jun 202010.06%−0.77
29 May 202010.83%−0.36
15 May 202011.19%−0.70
30 Apr 202011.89%−0.49
15 Apr 202012.38%+0.63
31 Mar 202011.75%−1.51
13 Mar 202013.26%+0.12
28 Feb 202013.14%+0.12
14 Feb 202013.02%+0.17
31 Jan 202012.85%−0.28
15 Jan 202013.13%+0.60
31 Dec 201912.53%−0.24
13 Dec 201912.77%−1.02
29 Nov 201913.79%+1.16
15 Nov 201912.63%−0.45
31 Oct 201913.08%−0.74
15 Oct 201913.82%−0.22
30 Sep 201914.04%−0.10
13 Sep 201914.14%−1.98
30 Aug 201916.12%+0.10
15 Aug 201916.02%+1.12
31 Jul 201914.90%−0.96
15 Jul 201915.86%−0.84
28 Jun 201916.70%+1.68
14 Jun 201915.02%−0.79
31 May 201915.81%−0.77
15 May 201916.58%+0.97
30 Apr 201915.61%−0.47
15 Apr 201916.08%+1.00
29 Mar 201915.08%+0.25
15 Mar 201914.83%+0.63
28 Feb 201914.20%−2.20
15 Feb 201916.40%+2.13
31 Jan 201914.27%+0.76
15 Jan 201913.51%+1.25
31 Dec 201812.26%+1.11
14 Dec 201811.15%−0.38
30 Nov 201811.53%−0.95
15 Nov 201812.48%−1.99
31 Oct 201814.47%−1.26
15 Oct 201815.73%+1.84
28 Sep 201813.89%+0.24
14 Sep 201813.65%−0.49
31 Aug 201814.14%−1.08
15 Aug 201815.22%+2.01
31 Jul 201813.21%−0.30
13 Jul 201813.51%−0.54
29 Jun 201814.05%−1.62
15 Jun 201815.67%+1.23
31 May 201814.44%+0.20
15 May 201814.24%−0.48
30 Apr 201814.72%−0.52
13 Apr 201815.24%−1.03
29 Mar 201816.27%+2.18
15 Mar 201814.09%−0.71
28 Feb 201814.80%−0.71
15 Feb 201815.51%−0.53
31 Jan 201816.04%+0.02
12 Jan 201816.02%+2.38
29 Dec 201713.64%–

Newest first. Scroll inside the table for earlier dates, back to 29 Dec 2017.

Frequently asked questions

How shorted is Acadia Healthcare Company, Inc. right now?
23.10% of Acadia Healthcare Company, Inc.'s (ACHC) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 69th most shorted US stock, out of 3,805 we rank.
What does this number include?
FINRA member firms must report their short positions in all US equities twice a month; FINRA consolidates them per security. We divide that official share count by the company's shares outstanding from its SEC filings. This is the regulatory figure, not a daily estimate.
Why does it only update twice a month?
US short interest is reported for settlement on the 15th and the last business day of each month, and FINRA publishes the consolidated figures about nine business days later. That cadence is set by regulation; no daily official figure exists.
Is this ACHC's short float?
No. This is short interest as a percentage of shares outstanding, the count in the company's SEC filings. "Short float" divides the same FINRA short count by the public float, which excludes closely held shares, so it comes out higher for the same company. We publish no float estimates: the float is not a regulatory figure.
What is ACHC's days to cover?
18.79 days for settlement date 15 Sep 2026: FINRA's own short interest ratio, the reported shares short divided by average daily trading volume. It is published in the same FINRA file and shown verbatim; we hold no volume data ourselves.
Which funds are short?
US public short interest is aggregate-only: individual short sellers are not named. Only some EU markets publish named positions.