Atrion Corporation (ATRI)
ATRI moved a median of +0.04% 30 minutes after news, and -0.08% by the close. How ATRI actually reacts to news — the realized, point-in-time move the market made, measured across 102 labeled events over the last three years with zero look-ahead.
ATRI’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 46% | 48 |
| 30-min | +0.04% | 52% | 60 |
| 60-min | 0.00% | 49% | 71 |
| to close | -0.08% | 38% | 80 |
| Middle 50% of ATRI reactions | -0.27% to +1.35% |
|---|---|
| Median reaction (30-min) | +0.04% |
| Measured reactions | 102 |
Half of all Atrion Corporation news events land between -0.27% and +1.35% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
Email me when ATRI moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to ATRI's baseline. Nothing else.
Recent ATRI events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 15-12G ATRION CORP | SEC filing · Form 15-12G | SEC EDGAR | — | — | |
| Form 8-K ATRION CORP For: Aug 21 | SEC filing · Form 8-K | SEC EDGAR | — | — | |
| Form S-8 POS ATRION CORP | SEC filing · Form S-8 | SEC EDGAR | — | — | |
| Form 8-K ATRION CORP For: Aug 19 | SEC filing · Form 8-K | SEC EDGAR | +0.04% | +0.02% | |
| Form 10-Q ATRION CORP For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | -0.00% | -0.08% | |
| Form 8-K ATRION CORP For: Aug 08 | SEC filing · Form 8-K | SEC EDGAR | -0.00% | -0.08% | |
| Form 8-K ATRION CORP For: Aug 09 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -0.02% | |
| Form DEFA14A ATRION CORP | SEC filing · Form DEFA14A | SEC EDGAR | +0.00% | -0.02% | |
| Atrion Reports Second Quarter 2024 Results | Press release | GlobeNewswire | -0.00% | -0.08% | |
| Form DEFM14A ATRION CORP | SEC filing · Form DEFM14A | SEC EDGAR | -0.06% | -0.10% | |
| Form PREM14A ATRION CORP For: Jul 02 | SEC filing · Form PREM14A | SEC EDGAR | +0.00% | +0.66% | |
| SHAREHOLDER UPDATE: Halper Sadeh LLC Continues to Investigate OSG, CALT, ATRI | Press release | GlobeNewswire | — | -0.06% | |
| SHAREHOLDER UPDATE: Halper Sadeh LLC Continues to Investigate SRCL, MRO, SRDX, ATRI | Press release | PR Newswire | +0.00% | -0.68% | |
| Form SD ATRION CORP | SEC filing · Form SD | SEC EDGAR | +0.00% | -0.38% | |
| Form 8-K ATRION CORP For: May 28 | SEC filing · Form 8-K | SEC EDGAR | +0.84% | +1.86% | |
| ALERT: Rowley Law PLLC is Investigating Proposed Acquisition of Atrion Corporation | Press release | PR Newswire | +0.84% | +1.86% | |
| ATRI Alert: Monsey Firm of Wohl & Fruchter Investigating Fairness of the Sale of Atrion to Nordson | Press release | GlobeNewswire | +0.17% | -1.45% | |
| ATRI Stock Alert: Halper Sadeh LLC Is Investigating Whether the Sale of Atrion Corporation Is Fair to Shareholders | Press release | Business Wire | +0.00% | -2.31% | |
| Atrion Corporation Enters Into Merger Agreement with Nordson Corporation | Press release | GlobeNewswire | +0.00% | -2.31% | |
| Form 8-K ATRION CORP For: May 28 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -2.31% | |
| Form 8-K ATRION CORP For: May 20 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -2.31% | |
| Atrion Corporation Declares Quarterly Cash Dividend | Press release | GlobeNewswire | — | +4.94% | |
| Atrion Reports First Quarter 2024 Results | Press release | GlobeNewswire | +1.47% | -0.41% | |
| Form 10-Q ATRION CORP For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +1.47% | -0.41% | |
| Form 8-K ATRION CORP For: May 10 | SEC filing · Form 8-K | SEC EDGAR | +1.47% | -0.41% | |
| Form ARS ATRION CORP For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | +1.01% | +6.53% | |
| Form DEF 14A ATRION CORP For: May 21 | SEC filing · Form DEF | SEC EDGAR | +1.01% | +6.53% | |
| Form DEFA14A ATRION CORP | SEC filing · Form DEFA14A | SEC EDGAR | +1.01% | +6.53% | |
| Form PRE 14A ATRION CORP For: May 21 | SEC filing · Form PRE | SEC EDGAR | -0.18% | +1.55% | |
| Atrion Reports Fourth Quarter And Full Year 2023 Results | Press release | GlobeNewswire | -2.03% | -4.01% | |
| Form 10-K ATRION CORP For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | -2.03% | -4.01% | |
| Form 8-K ATRION CORP For: Feb 29 | SEC filing · Form 8-K | SEC EDGAR | -2.03% | -4.01% | |
| Atrion Corporation Declares Quarterly Cash Dividend | Press release | GlobeNewswire | — | -2.15% | |
| Form 8-K ATRION CORP For: Dec 21 | SEC filing · Form 8-K | SEC EDGAR | — | +1.25% | |
| Atrion Corporation Declares Quarterly Cash Dividend | Press release | GlobeNewswire | — | -2.66% | |
| Atrion Reports Third Quarter 2023 Results | Press release | GlobeNewswire | — | -4.81% | |
| Form 10-Q ATRION CORP For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | — | -4.81% | |
| Form 8-K ATRION CORP For: Nov 07 | SEC filing · Form 8-K | SEC EDGAR | — | -4.81% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the ATRI section they belong to.
Where else ATRI is measured.
ATRI earnings → · Analyst actions → · SEC filings →
Other Healthcare names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| COVALON TECHS LTD (CVALF) | 103 | 0.00% | 35% |
| ENCISION INC (ECIA) | 103 | 0.00% | 33% |
| FINCANNA CAPITAL CORP (FNNZF) | 102 | 0.00% | 32% |
| MAVEN BRANDS INC (TRLFF) | 102 | 0.00% | 46% |
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 Atrion Corporation's median reaction calculated?
Every labeled ATRI 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 102 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. 52% of ATRI'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 ATRI'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.