Acadia Healthcare Company, Inc. (ACHC)
ACHC moved a median of -0.02% 30 minutes after news, and -0.18% by the close. How ACHC actually reacts to news — the realized, point-in-time move the market made, measured across 1,165 labeled events over the last three years with zero look-ahead.
ACHC’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 49% | 1,160 |
| 30-min | -0.02% | 49% | 1,161 |
| 60-min | +0.11% | 53% | 1,161 |
| to close | -0.18% | 45% | 1,158 |
| Middle 50% of ACHC reactions | -0.61% to +0.60% |
|---|---|
| Median reaction (30-min) | -0.02% |
| Measured reactions | 1,165 |
Half of all Acadia Healthcare Company, Inc. news events land between -0.61% and +0.60% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How ACHC reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 23 | -0.35% | 26% | -1.12% |
| Analyst downgrades | 21 | +0.80% | 57% | +1.51% |
| Coverage initiations | 11 | -0.28% | 36% | +0.27% |
| Rating reiterations | 114 | +0.01% | 50% | +0.12% |
| Price-target cuts | 30 | -0.16% | 43% | -0.64% |
Last 3 years, pulled 2026-09-21. Reaction = percent move vs. the price at the news timestamp. Counts and medians only. The same measurement runs across every name in the dataset. 1 further class was observed with fewer than 10 measured events and is not published. See how ACHC ranks against every other measured name →
That’s how ACHC usually reacts — get an email when it moves on news →Email me when ACHC moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to ACHC's baseline. Nothing else.
Recent ACHC events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Acadia Healthcare Announces Date for Third Quarter 2026 Earnings Release | Press release | Business Wire | +1.51% | +0.10% | |
| Did Acadia Healthcare Company, Inc. Insiders Breach their Fiduciary Duties to Shareholders? | Press release | PR Newswire | +0.26% | -0.59% | |
| Acadia Healthcare Provides Notice of Proposed Derivative Action Settlement | Press release | Business Wire | +1.94% | +2.16% | |
| Form 8-K Acadia Healthcare Compan For: Sep 25 | SEC filing · Form 8-K | SEC EDGAR | +1.94% | +2.16% | |
| Acadia Healthcare to Participate in 2026 Jefferies Healthcare Services and Technology Conference | Press release | Business Wire | +0.15% | +2.81% | |
| Did Acadia Healthcare Company, Inc. Insiders Breach their Fiduciary Duties to Shareholders? | Press release | PR Newswire | +0.43% | -0.76% | |
| Did Acadia Healthcare Company, Inc. Insiders Breach their Fiduciary Duties to Shareholders? | Press release | PR Newswire | -0.59% | +3.04% | |
| Did Acadia Healthcare Company, Inc. Insiders Breach their Fiduciary Duties to Shareholders? | Press release | PR Newswire | -0.27% | -0.74% | |
| Acadia Healthcare Announces Second Quarter 2026 Results and Updates Full Year 2026 Financial and Cash Flow Guidance | Press release | Business Wire | -5.06% | -16.92% | |
| Form 10-Q Acadia Healthcare Compan For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | -5.06% | -16.92% | |
| Form 8-K Acadia Healthcare Compan For: Jul 28 | SEC filing · Form 8-K | SEC EDGAR | -5.06% | -16.92% | |
| Acadia Healthcare Announces Date for Second Quarter 2026 Earnings Release | Press release | Business Wire | -0.55% | -1.57% | |
| Form 8-K Acadia Healthcare Compan For: May 18 | SEC filing · Form 8-K | SEC EDGAR | -2.54% | -0.20% | |
| Form S-8 Acadia Healthcare Compan | SEC filing · Form S-8 | SEC EDGAR | -0.96% | +3.79% | |
| Form 8-K Acadia Healthcare Compan For: May 06 | SEC filing · Form 8-K | SEC EDGAR | +0.99% | -2.63% | |
| Form 10-Q Acadia Healthcare Compan For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +0.70% | -4.55% | |
| Acadia Healthcare Announces First Quarter 2026 Results | Press release | Business Wire | +0.70% | -4.55% | |
| Form 8-K Acadia Healthcare Compan For: Apr 29 | SEC filing · Form 8-K | SEC EDGAR | +0.70% | -4.55% | |
| National Veterinary Associates Appoints Todd S. Young as Chief Financial Officer | Press release | Business Wire | -2.54% | +2.09% | |
| Acadia Healthcare Appoints David Duckworth as Interim Chief Financial Officer | Press release | Business Wire | -2.54% | +2.09% | |
| Form 8-K Acadia Healthcare Compan For: Apr 22 | SEC filing · Form 8-K | SEC EDGAR | -2.54% | +2.09% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages Acadia Healthcare Company, Inc. (ACHC) Shareholders to Inquire about Securities Investigation | Press release | ACCESS Newswire | +0.29% | +0.15% | |
| Acadia Healthcare Announces Date for First Quarter 2026 Earnings Release | Press release | Business Wire | +0.35% | +2.57% | |
| Bronstein, Gewirtz & Grossman, LLC Is Investigating Acadia Healthcare Company, Inc. (ACHC) And Encourages Shareholders to Connect | Press release | ACCESS Newswire | — | +0.00% | |
| Bronstein, Gewirtz & Grossman, LLC Initiates an Investigation into Allegations Against Acadia Healthcare Company, Inc. (ACHC) And Encourages Shareholders to Reach Out | Press release | ACCESS Newswire | +0.38% | +4.05% | |
| Bronstein, Gewirtz & Grossman, LLC Announces an Investigation Against Acadia Healthcare Company, Inc. (ACHC) and Encourages Shareholders to Learn More About the Investigation | Press release | ACCESS Newswire | -0.54% | +0.08% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages Acadia Healthcare Company, Inc. (ACHC) Stockholders to Inquire about Securities Investigation | Press release | ACCESS Newswire | +0.61% | +1.25% | |
| Acadia Healthcare Company, Inc. (ACHC) Investigation: Bronstein, Gewirtz & Grossman, LLC Encourages Shareholders to Contact the Firm to Learn More About the Investigation | Press release | ACCESS Newswire | +0.16% | -2.09% | |
| Form ARS Acadia Healthcare Compan For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | +0.06% | -1.04% | |
| Form DEF 14A Acadia Healthcare Compan For: May 06 | SEC filing · Form DEF | SEC EDGAR | +0.06% | -1.04% | |
| Form DEFA14A Acadia Healthcare Compan | SEC filing · Form DEFA14A | SEC EDGAR | +0.06% | -1.04% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages Acadia Healthcare Company, Inc. (ACHC) Stockholders to Inquire about Securities Investigation | Press release | ACCESS Newswire | +0.30% | +0.96% | |
| Bronstein, Gewirtz & Grossman, LLC Initiates an Investigation into Allegations Against Acadia Healthcare Company, Inc. (ACHC) And Encourages Stockholders to Reach Out | Press release | ACCESS Newswire | -0.37% | -1.23% | |
| Bronstein, Gewirtz & Grossman, LLC Is Investigating Acadia Healthcare Company, Inc. (ACHC) And Encourages Stockholders to Connect | Press release | ACCESS Newswire | +0.31% | -2.83% | |
| Acadia Healthcare Company, Inc. (ACHC) Investigation: Bronstein, Gewirtz & Grossman, LLC Encourages Stockholders to Contact the Firm to Learn More About the Investigation | Press release | ACCESS Newswire | +0.77% | -2.19% | |
| Acadia Healthcare Appoints Daniel Cancelmi to Board of Directors | Press release | Business Wire | -0.56% | -2.61% | |
| Bronstein, Gewirtz & Grossman, LLC Announces an Investigation Against Acadia Healthcare Company, Inc. (ACHC) and Encourages Stockholders to Learn More About the Investigation | Press release | ACCESS Newswire | +0.39% | +0.10% | |
| Form 8-K Acadia Healthcare Compan For: Mar 09 | SEC filing · Form 8-K | SEC EDGAR | -0.56% | -2.61% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages Acadia Healthcare Company, Inc. (ACHC) Investors to Inquire about Securities Investigation | Press release | ACCESS Newswire | +0.18% | +0.82% | |
| Form 10-K Acadia Healthcare Compan For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +0.29% | +6.06% | |
| Acadia Healthcare Announces Fourth Quarter and 2025 Results | Press release | Business Wire | +4.14% | +1.41% | |
| Form 8-K Acadia Healthcare Compan For: Feb 25 | SEC filing · Form 8-K | SEC EDGAR | +4.14% | +1.41% | |
| Acadia Healthcare to Participate in March Investor Conferences | Press release | Business Wire | +0.13% | +1.34% | |
| Acadia Healthcare Announces Date for Fourth Quarter and Year-End 2025 Earnings Release | Press release | Business Wire | +0.81% | -0.44% | |
| Form 8-K Acadia Healthcare Compan For: Jan 20 | SEC filing · Form 8-K | SEC EDGAR | +1.95% | +2.28% | |
| Acadia Healthcare Appoints Debbie Osteen as Chief Executive Officer | Press release | Business Wire | +3.81% | +15.58% | |
| Form 8-K Acadia Healthcare Compan For: Jan 19 | SEC filing · Form 8-K | SEC EDGAR | +3.81% | +15.58% | |
| Form 8-K Acadia Healthcare Compan For: Jan 13 | SEC filing · Form 8-K | SEC EDGAR | -1.58% | -5.71% | |
| Acadia Healthcare to Participate in 44th Annual J.P. Morgan Healthcare Conference | Press release | Business Wire | -0.38% | +2.17% | |
| Bronstein, Gewirtz & Grossman, LLC Is Investigating Acadia Healthcare Company, Inc. (ACHC) And Encourages Shareholders to Connect | Press release | ACCESS Newswire | +0.21% | +0.21% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the ACHC section they belong to.
Where else ACHC is measured.
ACHC earnings → · Analyst actions → · SEC filings →
Other Healthcare names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| ICON plc - Ordinary Shares (ICLR) | 1,176 | -0.01% | 50% |
| WRIGHT MEDICAL GROUP NV (WMGI) | 1,168 | -0.07% | 42% |
| Corcept Therapeutics Incorporated (CORT) | 1,158 | +0.11% | 53% |
| Medpace Holdings, Inc. (MEDP) | 1,147 | -0.01% | 50% |
Same sector, same measurement: percent move vs. the price at the news timestamp, read at 30 minutes. Sample sizes differ, so the medians are comparable but the confidence behind them is not.
All Healthcare names, measured the same way →
Every ticker we measure the same way24
Apple (AAPL)
How AAPL actually reacts to news, measured.
NVIDIA (NVDA)
How NVDA actually reacts to news, measured.
Tesla (TSLA)
How TSLA actually reacts to news, measured.
Microsoft (MSFT)
How MSFT actually reacts to news, measured.
Advanced Micro Devices (AMD)
How AMD actually reacts to news, measured.
Amazon (AMZN)
How AMZN actually reacts to news, measured.
Alphabet (GOOG)
How GOOG actually reacts to news, measured.
Meta Platforms (META)
How META actually reacts to news, measured.
Broadcom (AVGO)
How AVGO actually reacts to news, measured.
JPMorgan Chase (JPM)
How JPM actually reacts to news, measured.
Visa (V)
How V actually reacts to news, measured.
Walmart (WMT)
How WMT actually reacts to news, measured.
Eli Lilly (LLY)
How LLY actually reacts to news, measured.
UnitedHealth Group (UNH)
How UNH actually reacts to news, measured.
Netflix (NFLX)
How NFLX actually reacts to news, measured.
Johnson & Johnson (JNJ)
How JNJ actually reacts to news, measured.
Exxon Mobil (XOM)
How XOM actually reacts to news, measured.
Home Depot (HD)
How HD actually reacts to news, measured.
Costco (COST)
How COST actually reacts to news, measured.
Mastercard (MA)
How MA actually reacts to news, measured.
Oracle (ORCL)
How ORCL actually reacts to news, measured.
Salesforce (CRM)
How CRM actually reacts to news, measured.
Bank of America (BAC)
How BAC actually reacts to news, measured.
Coca-Cola (KO)
How KO actually reacts to news, measured.
Walt Disney (DIS)
How DIS actually reacts to news, measured.
Browse all tickers
Every name we’ve measured, in one place.
How the numbers are made.
How is Acadia Healthcare Company, Inc.'s median reaction calculated?
Every labeled ACHC news event is measured from its own timestamp: the last trade before the news is the base price, and the move is read at fixed horizons — 30 minutes of trading, then the close. The median across 1,165 events is what this page reports. Point-in-time, zero look-ahead: no event borrows information from a later one.
What counts as a positive reaction?
Any event whose price move is above zero at the horizon, relative to the last trade before the news timestamp. 49% of ACHC's measured events are up at 30 minutes; the rest close the window flat or negative.
How often is this page updated?
The news table refreshes automatically as new events are labeled and priced. The reaction medians are re-pulled in batches from the dataset — the figures here are as of 2026-09-21.
Does ACHC's past reaction predict its next one?
No. These are realized facts about past events, not forecasts. They describe a distribution — they say nothing certain about any future move.