Acadia Healthcare (ACHC) Short Interest Ratio & Short Volume $29.46 -0.05 (-0.17%) Closing price 10/29/2026 04:00 PM EasternExtended Trading$29.21 -0.25 (-0.85%) As of 08:01 AM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more. Add Compare Share Share Short Interest Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsInsider TradesNews and TrendsOptions ChainOwnershipSEC FilingsShort Interest Acadia Healthcare Short Interest OverviewAs of October 15, 2026, Acadia Healthcare (ACHC) had a short interest of 20.94 million shares sold short, representing 22.76% of the public float. This marks a 8.04% decrease in short interest since the prior report. The short interest ratio (days to cover) is 13.7, meaning it would take 13.7 days of the average trading volume of 1.54 million shares to cover all short positions.Current Short Interest20,939,393 sharesPrevious Short Interest22,770,844 sharesChange Vs. Previous Report-8.04%Dollar Volume Sold Short$649.96 millionShort Interest Ratio13.7 Days to CoverLast Record DateOctober 15, 2026Outstanding Shares93,100,000 sharesShort Percent of Float22.76%Today's Trading Volume2,738,260 sharesAverage Trading Volume1,538,264 sharesToday's Volume Vs. Average178% Short Selling Acadia Healthcare? Sign up to receive the latest short interest report for Acadia Healthcare and its competitors with MarketBeat's FREE newsletter. Email Address Get Report View SMS TermsSMS is currently available in Australia, Belgium, Canada, France, Germany, Ireland, Italy, New Zealand, the Netherlands, Singapore, South Africa, Spain, Switzerland, the United Kingdom, and the United States. 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Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartACHC Short Interest Over TimeACHC Days to Cover Over TimeACHC Percentage of Float Shorted Over Time Acadia Healthcare Tesla Short Interest History & Recent Changes ExportReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 10/15/202620,939,393 shares $649.96 million -8.0%22.8%13.7 $31.04 9/30/202622,770,844 shares $626.20 million +5.9%24.8%13.91 $27.50 9/15/202621,509,968 shares $588.94 million -4.8%23.4%18.79 $27.38 8/31/202622,583,163 shares $622.39 million +7.8%24.6%12.69 $27.56 8/14/202620,952,409 shares $645.96 million -3.9%22.8%12.5 $30.83 7/31/202621,801,530 shares $645.76 million +0.0%23.7%6.67 $29.62 7/15/202621,795,658 shares $703.35 million -3.3%24.0%7.17 $32.27 6/30/202622,539,485 shares $665.59 million +11.1%24.8%5.37 $29.53 6/15/202620,283,712 shares $506.89 million -11.7%22.3%8.41 $24.99 5/29/202622,961,829 shares $532.71 million +1.4%25.3%9.48 $23.20 Get the Latest News and Ratings for ACHC and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Acadia Healthcare and its competitors with MarketBeat's FREE daily newsletter. 5/15/202622,640,147 shares $584.34 million -5.0%24.9%8.17 $25.81 4/30/202623,836,977 shares $617.38 million +7.7%26.2%6.9 $25.90 4/15/202622,137,933 shares $589.09 million +0.3%24.4%7.9 $26.61 3/31/202622,082,847 shares $516.52 million -11.9%24.3%7.68 $23.39 3/13/202625,057,235 shares $589.35 million -9.0%27.7%7.47 $23.52 2/27/202627,527,415 shares $645.24 million -15.2%30.3%7.11 $23.44 2/13/202632,453,225 shares $544.24 million +23.1%35.7%7.27 $16.77 1/30/202626,360,014 shares $354.28 million +20.0%29.2%6.02 $13.44 1/15/202621,965,300 shares $261.61 million +13.2%24.3%7.6 $11.91 12/31/202519,412,833 shares $275.47 million +16.6%21.5%7.71 $14.19 12/15/202516,647,583 shares $236.73 million +15.0%18.4%4.24 $14.22 11/28/202514,473,235 shares $245.76 million +24.3%16.0%5.32 $16.98 11/14/202511,646,543 shares $186.58 million +3.1%12.8%4.27 $16.02 10/31/202511,301,282 shares $242.98 million -6.6%12.4%5.48 $21.50 10/15/202512,100,000 shares $298.63 million -14.6%13.4%4.4 $24.68 9/30/202514,160,000 shares $350.60 million +18.9%N/A5.2 $24.76 9/15/202511,910,000 shares $255.11 million +0.6%N/A4.6 $21.42 8/31/202511,840,000 shares $271.85 million +9.8%13.0%5.2 $22.96 8/15/202510,780,000 shares $226.16 million +2.3%N/A5.3 $20.98 7/31/202510,540,000 shares $229.46 million -0.6%11.6%4.8 $21.77 7/15/202510,600,000 shares $246.66 million -4.1%N/A4.8 $23.27 6/30/202511,050,000 shares $250.72 million +18.8%12.4%4.4 $22.69 6/15/20259,300,000 shares $197.44 million -3.2%10.4%3.7 $21.23 5/31/20259,610,000 shares $218.82 million +0.2%10.8%3.9 $22.77 5/15/20259,590,000 shares $245.89 million +14.2%10.7%3.5 $25.64 4/30/20258,400,000 shares $196.56 million +11.4%9.4%3.4 $23.40 4/15/20257,540,000 shares $186.46 million +6.4%8.4%3.4 $24.73 3/31/20257,090,000 shares $214.97 million +8.7%7.8%3.6 $30.32 3/15/20256,520,000 shares $186.08 million +27.3%7.2%3.5 $28.54 2/28/20255,120,000 shares $153.50 million -11.1%5.6%2.8 $29.98Financial legend: “This is bad, really bad...” (Ad)Dr. Martin D. 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Now he says a $3 trillion problem could trigger a chain reaction of crashes and failures, causing a global freeze in financial markets.See Dr. Weiss's full warning before the next crisis hits. 2/15/20255,760,000 shares $236.51 million +4.5%6.3%3.8 $41.06 1/31/20255,510,000 shares $248.56 million -6.9%N/A3.5 $45.11 1/15/20255,920,000 shares $254.80 million -11.2%N/A3.4 $43.04 12/31/20246,670,000 shares $264.47 million -2.6%N/A3.8 $39.65 12/15/20246,850,000 shares $278.52 million +0.6%N/A3.7 $40.66 11/30/20246,810,000 shares $276.69 million +4.0%N/A4.1 $40.63 11/15/20246,550,000 shares $247.72 million +9.4%N/A4.1 $37.82 10/31/20245,990,000 shares $255.71 million +7.5%N/A4 $42.69 10/15/20245,570,000 shares $317.27 million +32.0%N/A4 $56.96 9/30/20244,220,000 shares $267.59 million +13.1%N/A3.3 $63.41 9/15/20243,730,000 shares $291.80 million -3.4%N/A4.1 $78.23 8/31/20243,860,000 shares $316.25 million +5.8%N/A4.2 $81.93 8/15/20243,650,000 shares $270.57 million +3.1%N/A3.8 $74.13 7/31/20243,540,000 shares $229.57 million -1.1%N/A3.5 $64.85 7/15/20243,580,000 shares $233.34 million -6.3%N/A3.9 $65.18 6/30/20243,820,000 shares $258.00 million -4.7%N/A4.4 $67.54 6/15/20244,010,000 shares $262.25 million +11.1%N/A4.7 $65.40 5/31/20243,610,000 shares $248.69 million +10.4%N/A4.1 $68.89 5/15/20243,270,000 shares $224.94 million +1.9%N/A4.1 $68.79 4/30/20243,210,000 shares $237.35 million -8.8%N/A4.8 $73.94 4/15/20243,520,000 shares $257.35 million -5.6%3.9%6.2 $73.11 3/31/20243,730,000 shares $295.49 million +11.3%4.2%6.6 $79.22 3/15/20243,350,000 shares $260.60 million +20.5%3.7%6.2 $77.79 2/29/20242,780,000 shares $231.99 million -15.2%3.1%5.5 $83.45 2/15/20243,280,000 shares $272.90 million +1.9%3.7%6.9 $83.20 1/31/20243,220,000 shares $264.49 million +3.2%3.6%6.7 $82.14 1/15/20243,120,000 shares $267.88 million +4.0%3.5%5.9 $85.86 12/31/20233,000,000 shares $233.28 million -5.7%3.4%5.4 $77.76 12/15/20233,180,000 shares $239.87 million +8.2%3.6%5.8 $75.43 11/30/20232,940,000 shares $214.59 million +4.6%3.3%5.5 $72.99 11/15/20232,810,000 shares $210.53 million -3.8%3.1%5.4 $74.92 10/31/20232,920,000 shares $214.65 million +1.0%3.3%5.9 $73.51 10/15/20232,890,000 shares $220.59 million -3.3%3.2%6.1 $76.33 9/30/20232,990,000 shares $210.23 million +4.9%3.3%5.9 $70.31 9/15/20232,850,000 shares $199.76 million -2.4%3.2%5.3 $70.09 8/31/20232,920,000 shares $225.13 million +2.8%3.3%5 $77.10 8/15/20232,840,000 shares $218.62 million -6.6%3.2%4.5 $76.98 7/31/20233,040,000 shares $240.25 million -25.3%3.4%4.5 $79.03 7/15/20234,070,000 shares $306.47 million -10.8%4.6%5.7 $75.30 6/30/20234,560,000 shares $363.16 million +17.2%5.1%7.2 $79.64 6/15/20233,890,000 shares $285.84 million +4.0%4.4%6.3 $73.48 5/31/20233,740,000 shares $264.16 million -3.9%4.2%6.5 $70.63 5/15/20233,890,000 shares $279.30 million +8.1%4.4%6.1 $71.80 4/30/20233,600,000 shares $260.24 million -0.3%4.0%5.8 $72.29 4/15/20233,610,000 shares $273.42 million -1.9%4.1%6.2 $75.74 3/31/20233,680,000 shares $265.88 million -2.1%4.2%6.4 $72.25 3/15/20233,760,000 shares $257.41 million +3.0%4.2%6.6 $68.46 2/28/20233,650,000 shares $264.66 million +0.8%4.1%6 $72.51 2/15/20233,620,000 shares $293.94 million -3.0%4.1%6.8 $81.20 1/31/20233,730,000 shares $313.39 million +9.7%4.2%6.5 $84.02Elon Musk about to bankrupt Amazon, Microsoft & Google? 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Brown compares the scale of this project to the SpaceX IPO, which minted thousands of millionaires overnight.Click here to see the full details on Musk's next big move 1/15/20233,400,000 shares $292.40 million +0.9%3.8%5.6 $86.00 12/30/20223,370,000 shares $277.42 million -2.0%3.8%5.5 $82.32 12/15/20223,440,000 shares $291.92 million -5.2%3.9%5.3 $84.86 11/30/20223,630,000 shares $323.29 million -2.2%4.1%5.6 $89.06 11/15/20223,710,000 shares $301.10 million -11.0%4.2%5.9 $81.16 10/31/20224,170,000 shares $339.02 million -7.5%4.7%6.9 $81.30 10/15/20224,510,000 shares $361.66 million +4.2%5.1%7.7 $80.19 9/30/20224,330,000 shares $338.52 million +2.1%4.9%7.4 $78.18 9/15/20224,240,000 shares $355.31 million +3.2%4.8%7.2 $83.80 8/31/20224,110,000 shares $336.73 million +12.6%4.6%7.1 $81.93 8/15/20223,650,000 shares $301.60 million +3.1%4.1%6.8 $82.63 7/31/20223,540,000 shares $293.50 million +3.8%4.0%6.4 $82.91 7/15/20223,410,000 shares $259.19 million +1.5%4.0%5.7 $76.01 6/30/20223,360,000 shares $227.24 million -7.4%3.9%5.3 $67.63 6/15/20223,630,000 shares $239.40 million +3.1%4.2%5.6 $65.95 5/31/20223,520,000 shares $250.52 million -5.9%4.0%5.5 $71.17 5/15/20223,740,000 shares $264.01 million +4.2%4.2%5.6 $70.59 4/30/20223,590,000 shares $243.69 million +18.5%4.0%5.6 $67.88 4/15/20223,030,000 shares $227.31 million +9.0%3.4%5.2 $75.02 3/31/20222,780,000 shares $182.17 million -14.7%3.2%5.1 $65.53 3/15/20223,260,000 shares $209.75 million -4.4%3.7%7.1 $64.34 2/28/20223,410,000 shares $193.38 million +3.3%3.9%7.6 $56.71 2/15/20223,300,000 shares $180.41 million +10.4%3.7%7.9 $54.67 1/31/20222,990,000 shares $157.42 million +6.8%3.4%7.3 $52.65 1/15/20222,800,000 shares $161.36 million +2.6%3.2%6.5 $57.63 12/31/20212,730,000 shares $165.71 million -1.4%3.1%6.5 $60.70 12/15/20212,770,000 shares $160.49 million -1.8%3.1%6.5 $57.94 11/30/20212,820,000 shares $158.40 million +1.4%3.2%6.3 $56.17 11/15/20212,780,000 shares $180.45 million No Change3.1%6.3 $64.91 ACHC Short Interest - Frequently Asked Questions What is Acadia Healthcare's current short interest? Short interest is the volume of Acadia Healthcare shares that have been sold short but have not yet been covered or closed out. As of October 15th, investors have sold 20,939,393 shares of ACHC short. 22.76% of Acadia Healthcare's shares are currently sold short. Learn More on Acadia Healthcare's current short interest. What is a good short interest ratio for Acadia Healthcare? The short interest ratio, also known as the "days to cover ratio", is calculated by dividing the number of shares of a stock sold short divided by its average trading volume. A short interest ratio ranging between 1 and 4 generally indicates strong positive sentiment about a stock and a lack of short sellers. A short interest ratio of 10 or greater indicates strong pessimism about a stock. ACHC shares currently have a short interest ratio of 13.7. Learn More on Acadia Healthcare's short interest ratio. What is a good short interest percentage for Acadia Healthcare? Companies that have a short interest as a percentage of float below 10% indicates positive investor sentiment and few short sellers. Stocks with a short interest percentage above 10% is considered high, suggesting some investors are pessimistic about the stock. Companies with a short interest percentage of 20% or more indicates widespread negative sentiment. 22.76% of Acadia Healthcare's floating shares are currently sold short. Is Acadia Healthcare's short interest increasing or decreasing? Acadia Healthcare saw a decline in short interest since the prior report. As of October 15th, there was short interest totaling 20,939,393 shares, a decline of 8.0% from the previous total of 22,770,844 shares. Changes in short volume can be used to identify positive and negative investor sentiment. Investors that short sell a stock are betting that its price will decline in the future. An increase in short sale volume suggests bearish (negative) sentiment among investors. A decrease on short sale volume suggests bullish (positive) sentiment. How does Acadia Healthcare's short interest compare to its competitors? 22.76% of Acadia Healthcare's shares are currently sold short. Here is how the short interest of companies in the sector of "healthcare" compare to Acadia Healthcare: Integer Holdings Corporation (9.66%), Universal Health Services, Inc. (5.40%), The Ensign Group, Inc. (2.49%), PACS Group, Inc. (9.16%), Concentra Group Holdings Parent, Inc. (3.07%), Brookdale Senior Living Inc. (19.25%), Surgery Partners, Inc. (11.17%), Ardent Health, Inc. (2.71%), Sonida Senior Living, Inc. (13.10%), Nutex Health Inc. (32.66%), Which stocks are the most shorted right now? As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($71.77 billion), Invesco QQQ ($59.70 billion), iShares Russell 2000 ETF ($23.54 billion), Medtronic PLC ($13.33 billion), SPDR S&P Biotech ETF ($10.47 billion), iShares iBoxx $ High Yield Corporate Bond ETF ($10.36 billion), Nebius Group N.V. ($8.98 billion), iShares 20+ Year Treasury Bond ETF ($8.92 billion), iShares iBoxx $ Investment Grade Corporate Bond ETF ($8.10 billion), and iShares Semiconductor ETF ($7.74 billion). View all of the most shorted stocks. What does it mean to sell short Acadia Healthcare stock? Short selling ACHC is an investing strategy that aims to generate trading profit from Acadia Healthcare as its price is falling. ACHC shares are trading down $0.05 today. To short a stock, an investor borrows shares, sells them and buys the shares back on the public market later to return it to the lender. Short sellers are betting that a stock will decline in price. If the stock does drop after selling, the short seller buys it back at a lower price and returns it to the lender. The difference between the sell price and the buy price is the trader's profit. How does a short squeeze work against Acadia Healthcare? A short squeeze for Acadia Healthcare occurs when it has a large amount of short interest and its stock increases in price. This forces short sellers to cover their short interest positions by buying actual shares of ACHC, which in turn drives the price of the stock up even further. How often is Acadia Healthcare's short interest reported? Short interest is typically published by a stock exchange once per month. However, NASDAQ publishes a report for U.S. stocks, including ACHC, twice per month. The most recent reporting period available is October, 15 2026. What do ACHC's short interest metrics mean? Understanding short interest metrics can help you assess how traders are positioning around a stock like ACHC:Shares Sold Short: The total number of shares that have been sold by short sellers but have not yet been covered or closed out. A high number may indicate bearish sentiment.Short Float: The percentage of a company’s publicly available shares (or "float") that are sold short. A higher short float suggests a greater portion of the stock is being bet against.Days to Cover (Short Interest Ratio): This estimates how many days it would take short sellers to cover their positions, based on average daily trading volume. Higher values can signal potential for a short squeeze if buying pressure increases.These metrics are often used by traders to gauge sentiment, volatility risk, and the potential for price movements based on short covering activity. More Short Interest Resources from MarketBeat Related Companies ITGR Short Interest UHS Short Interest ENSG Short Interest PACS Short Interest CON Short Interest BKD Short Interest SGRY Short Interest ARDT Short Interest SNDA Short Interest NUTX Short Interest Short Interest Tools Stocks to Short Largest Short Interest Positions Short Interest Increases Short Interest Decreases Short Interest Reporting Dates Short interest data for NASDAQ:ACHC is sourced from the Financial Industry Regulatory Authority (FINRA), with the most recent report published on 10/26/2026. FINRA publishes updated short interest twice a month. From Our PartnersxIn 1929, the Dow fell 89 percent and took 25 years to recover. A 60-year-old who held on wasn't whole again un...USA Capital Gold | SponsoredFinancial legend: “This is bad, really bad...”Dr. Martin D. 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