STERIS plc (Ireland) Ordinary Shares (STE)
STE moved a median of -0.02% 30 minutes after news, and -0.06% by the close. How STE actually reacts to news — the realized, point-in-time move the market made, measured across 299 labeled events over the last three years with zero look-ahead.
STE’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | -0.10% | 42% | 299 |
| 30-min | -0.02% | 47% | 299 |
| 60-min | -0.15% | 42% | 299 |
| to close | -0.06% | 47% | 294 |
| Middle 50% of STE reactions | -0.54% to +0.35% |
|---|---|
| Median reaction (30-min) | -0.02% |
| Measured reactions | 299 |
Half of all STERIS plc (Ireland) Ordinary Shares news events land between -0.54% and +0.35% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How STE reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 19 | +0.23% | 79% | -0.04% |
| Analyst downgrades | 11 | +0.16% | 82% | +0.34% |
| Rating reiterations | 59 | +0.26% | 73% | +0.77% |
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. 3 further classes were observed with fewer than 10 measured events and are not published. See how STE ranks against every other measured name →
That’s how STE usually reacts — get an email when it moves on news →Email me when STE moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to STE's baseline. Nothing else.
Recent STE events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 8-K STERIS plc For: Oct 11 | SEC filing · Form 8-K | SEC EDGAR | +0.17% | -0.18% | |
| STERIS Expands Healthcare Consumables Offering with Definitive Agreement to Acquire Xodus Medical, a Specialty Surgical Products Business Focused on Patient and OR Staff Safety | Press release | GlobeNewswire | -0.13% | +1.34% | |
| Xodus Medical Announces Agreement to Be Acquired by STERIS (NYSE: STE) | Press release | PR Newswire | -0.03% | +0.27% | |
| STERIS to Present at the Morgan Stanley Healthcare Conference | Press release | GlobeNewswire | +0.91% | +0.49% | |
| Form 10-Q STERIS plc For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.25% | — | |
| Form 8-K STERIS plc For: Jul 31 | SEC filing · Form 8-K | SEC EDGAR | -0.33% | +3.52% | |
| Form 8-K/A STERIS plc For: May 07 | SEC filing · Form 8-K | SEC EDGAR | -0.33% | +3.52% | |
| Form 8-K STERIS plc For: Aug 05 | SEC filing · Form 8-K | SEC EDGAR | +4.41% | +8.04% | |
| STERIS Announces Financial Results for Fiscal 2027 First Quarter | Press release | GlobeNewswire | +4.41% | +8.04% | |
| STERIS To Invest $600 Million to Build a Formulated Chemistries Manufacturing and Distribution Center of Excellence in North Carolina | Press release | GlobeNewswire | -1.26% | -0.53% | |
| STERIS Raises Dividend to $0.69 per share | Press release | GlobeNewswire | -0.28% | +0.01% | |
| STERIS to Host a Conference Call for Fiscal 2027 First Quarter on August 6, 2026 | Press release | GlobeNewswire | +1.55% | +3.55% | |
| Form 11-K STERIS plc For: Dec 31 | SEC filing · Form 11-K | SEC EDGAR | +0.29% | -2.83% | |
| Form ARS STERIS plc For: Mar 31 | SEC filing · Form ARS | SEC EDGAR | -0.42% | -0.26% | |
| Form DEF 14A STERIS plc For: Jul 31 | SEC filing · Form DEF | SEC EDGAR | -0.42% | -0.26% | |
| Form DEFA14A STERIS plc | SEC filing · Form DEFA14A | SEC EDGAR | -0.42% | -0.26% | |
| Form SD STERIS plc | SEC filing · Form SD | SEC EDGAR | +0.57% | +0.53% | |
| Form 10-K STERIS plc For: Mar 31 | SEC filing · Form 10-K | SEC EDGAR | -0.26% | -0.68% | |
| Form 8-K STERIS plc For: May 11 | SEC filing · Form 8-K | SEC EDGAR | -0.13% | +2.38% | |
| STERIS Announces Financial Results for Fiscal 2026 Fourth Quarter and Full Year | Press release | GlobeNewswire | -0.13% | +2.38% | |
| Form 8-K STERIS plc For: May 01 | SEC filing · Form 8-K | SEC EDGAR | +0.02% | -3.04% | |
| STERIS Appoints Pierre Boulud to Board of Directors | Press release | GlobeNewswire | +0.02% | -3.04% | |
| STERIS Announces Dividend of $0.63 per share | Press release | GlobeNewswire | -0.56% | -0.25% | |
| STERIS to Host a Conference Call for Fiscal 2026 Fourth Quarter and Full Year Results on May 12, 2026 | Press release | GlobeNewswire | +0.22% | +0.89% | |
| Form 8-K STERIS plc For: Mar 31 | SEC filing · Form 8-K | SEC EDGAR | +0.18% | +0.02% | |
| Form 10-Q STERIS plc For: Dec 31 | SEC filing · Form 10-Q | SEC EDGAR | -0.38% | -1.95% | |
| Form 8-K STERIS plc For: Feb 04 | SEC filing · Form 8-K | SEC EDGAR | -2.13% | +1.51% | |
| STERIS Announces Financial Results for Fiscal 2026 Third Quarter | Press release | GlobeNewswire | -2.13% | +1.51% | |
| STERIS Announces Dividend of $0.63 per share | Press release | GlobeNewswire | +0.63% | +0.24% | |
| STERIS to Host a Conference Call for Fiscal 2026 Third Quarter Results on February 5, 2026 | Press release | GlobeNewswire | +0.00% | +0.27% | |
| Form 10-Q STERIS plc For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.33% | +1.62% | |
| Form 8-K STERIS plc For: Nov 05 | SEC filing · Form 8-K | SEC EDGAR | +5.23% | +4.85% | |
| STERIS Announces Financial Results for Fiscal 2026 Second Quarter | Press release | GlobeNewswire | +5.23% | +4.85% | |
| STERIS Announces Dividend of $0.63 per share | Press release | GlobeNewswire | +0.47% | +0.17% | |
| STERIS to Host a Conference Call for Fiscal 2026 Second Quarter Results on November 6, 2025 | Press release | GlobeNewswire | +0.05% | -0.76% | |
| Form 10-Q STERIS plc For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | -0.14% | +1.78% | |
| Form 8-K STERIS plc For: Jul 31 | SEC filing · Form 8-K | SEC EDGAR | +3.23% | +4.00% | |
| STERIS Announces Chief Financial Officer Transition | Press release | GlobeNewswire | +3.23% | +4.00% | |
| STERIS Announces Financial Results for Fiscal 2026 First Quarter | Press release | GlobeNewswire | +3.23% | +4.00% | |
| STERIS Raises Dividend to $0.63 per share | Press release | GlobeNewswire | -0.10% | -0.91% | |
| STERIS to Host a Conference Call for Fiscal 2026 First Quarter Results on August 7, 2025 | Press release | GlobeNewswire | -0.24% | -0.03% | |
| Form 8-K STERIS plc For: Jul 01 | SEC filing · Form 8-K | SEC EDGAR | -0.43% | -1.78% | |
| Form DEFA14A STERIS plc | SEC filing · Form DEFA14A | SEC EDGAR | -0.43% | -1.78% | |
| Form 11-K STERIS plc For: Dec 31 | SEC filing · Form 11-K | SEC EDGAR | -0.72% | -1.03% | |
| Form ARS STERIS plc For: Mar 31 | SEC filing · Form ARS | SEC EDGAR | +0.99% | +0.53% | |
| Form DEF 14A STERIS plc For: Jul 31 | SEC filing · Form DEF | SEC EDGAR | +0.99% | +0.53% | |
| Form DEFA14A STERIS plc | SEC filing · Form DEFA14A | SEC EDGAR | +0.99% | +0.53% | |
| Form SD STERIS plc | SEC filing · Form SD | SEC EDGAR | -0.36% | -0.71% | |
| Form 10-K STERIS plc For: Mar 31 | SEC filing · Form 10-K | SEC EDGAR | -0.20% | +0.78% | |
| Form 8-K STERIS plc For: May 14 | SEC filing · Form 8-K | SEC EDGAR | -0.34% | +2.74% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the STE section they belong to.
Where else STE is measured.
STE earnings → · Analyst actions → · SEC filings →
Other Healthcare names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Merit Medical Systems, Inc. (MMSI) | 299 | -0.03% | 48% |
| PLx Pharma Inc. (PLXP) | 299 | -0.05% | 35% |
| Hancock Jaffe Laboratories, Inc. (HJLI) | 298 | 0.00% | 50% |
| RESTORATION ROBOTICS (HAIR) | 297 | -0.24% | 40% |
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 →
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Every name we’ve measured, in one place.
How the numbers are made.
How is STERIS plc (Ireland) Ordinary Shares's median reaction calculated?
Every labeled STE 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 299 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. 47% of STE'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 STE'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.