ICON plc - Ordinary Shares (ICLR)
ICLR moved a median of -0.01% 30 minutes after news, and -0.04% by the close. How ICLR actually reacts to news — the realized, point-in-time move the market made, measured across 1,176 labeled events over the last three years with zero look-ahead.
ICLR’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | -0.06% | 44% | 1,174 |
| 30-min | -0.01% | 50% | 1,174 |
| 60-min | +0.07% | 53% | 1,174 |
| to close | -0.04% | 49% | 1,174 |
| Middle 50% of ICLR reactions | -0.57% to +0.47% |
|---|---|
| Median reaction (30-min) | -0.01% |
| Measured reactions | 1,176 |
Half of all ICON plc - Ordinary Shares news events land between -0.57% and +0.47% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How ICLR reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 29 | +0.08% | 52% | -0.13% |
| Analyst downgrades | 35 | +0.67% | 63% | +0.73% |
| Coverage initiations | 19 | +0.63% | 74% | +0.02% |
| Rating reiterations | 117 | -0.06% | 47% | -0.33% |
| Price-target raises | 31 | +0.08% | 58% | +0.54% |
| Price-target cuts | 30 | +0.03% | 60% | -0.05% |
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. See how ICLR ranks against every other measured name →
That’s how ICLR usually reacts — get an email when it moves on news →Email me when ICLR moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to ICLR's baseline. Nothing else.
Recent ICLR events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 6-K ICON PLC For: Oct 08 | SEC filing · Form 6-K | SEC EDGAR | -0.48% | +1.78% | |
| ICON Schedules Third Quarter 2026 Earnings Conference Call | Press release | Business Wire | -0.48% | +1.78% | |
| Form 6-K ICON PLC For: Sep 09 | SEC filing · Form 6-K | SEC EDGAR | -0.85% | +4.03% | |
| Form 6-K ICON PLC For: Aug 14 | SEC filing · Form 6-K | SEC EDGAR | -0.06% | +1.41% | |
| Form 6-K ICON PLC For: Aug 20 | SEC filing · Form 6-K | SEC EDGAR | +1.31% | +2.41% | |
| ICON Releases 2025 ICON Cares Report, Highlighting Progress in Patient Impact, Innovation and Sustainability | Press release | Business Wire | +1.31% | +2.41% | |
| Form 6-K ICON PLC For: Aug 14 | SEC filing · Form 6-K | SEC EDGAR | +0.65% | -1.74% | |
| Form 6-K ICON PLC For: Aug 06 | SEC filing · Form 6-K | SEC EDGAR | -0.25% | -0.74% | |
| ICON Announces Pricing of USD 2.15 Billion Notes | Press release | Business Wire | -0.25% | -0.74% | |
| ICON Announces Private Offering of Notes | Press release | Business Wire | -2.86% | +0.09% | |
| Form 6-K ICON PLC For: Jul 31 | SEC filing · Form 6-K | SEC EDGAR | -3.04% | -4.17% | |
| ICON Announces Results of Annual General Meeting | Press release | Business Wire | -3.04% | -4.17% | |
| Form 6-K ICON PLC For: Jun 30 | SEC filing · Form 6-K | SEC EDGAR | -0.25% | -0.13% | |
| Form 6-K ICON PLC For: Jul 29 | SEC filing · Form 6-K | SEC EDGAR | -0.25% | -0.13% | |
| ICON Reports Second Quarter 2026 Results | Press release | Business Wire | -0.25% | -0.13% | |
| ICON announces multi-year collaboration with Anthropic to bring frontier AI to clinical trials | Press release | Business Wire | +2.49% | +1.50% | |
| Form 6-K ICON PLC For: Jul 22 | SEC filing · Form 6-K | SEC EDGAR | -0.72% | +0.05% | |
| ICON Schedules Second Quarter 2026 Earnings Conference Call | Press release | Business Wire | -0.72% | +0.05% | |
| Form 6-K ICON PLC For: Jun 26 | SEC filing · Form 6-K | SEC EDGAR | +1.84% | +5.65% | |
| Form 6-K ICON PLC For: Jun 23 | SEC filing · Form 6-K | SEC EDGAR | +3.03% | +7.02% | |
| Form 6-K ICON PLC For: Mar 31 | SEC filing · Form 6-K | SEC EDGAR | +3.03% | +7.02% | |
| ICON Reports First Quarter 2026 Results | Press release | Business Wire | +3.03% | +7.02% | |
| ICON selects Microsoft as a preferred technology partner to power AI-enabled clinical development | Press release | Business Wire | +0.84% | -3.46% | |
| Form 6-K ICON PLC For: Jun 17 | SEC filing · Form 6-K | SEC EDGAR | +0.38% | +0.47% | |
| ICON Schedules First Quarter 2026 Earnings Conference Call | Press release | Business Wire | +0.38% | +0.47% | |
| Form 20-F ICON PLC For: Dec 31 | SEC filing · Form 20-F | SEC EDGAR | +6.39% | +16.11% | |
| Form 6-K ICON PLC For: May 27 | SEC filing · Form 6-K | SEC EDGAR | +6.39% | +16.11% | |
| Form 6-K/A ICON PLC For: Sep 30 | SEC filing · Form 6-K | SEC EDGAR | +6.39% | +16.11% | |
| ICON Reports Fourth Quarter and Full Year 2025 Results and Provides Outcome of Audit Committee Investigation | Press release | Business Wire | +6.39% | +16.11% | |
| Form 6-K ICON PLC For: May 26 | SEC filing · Form 6-K | SEC EDGAR | +0.89% | +3.45% | |
| ICON Schedules Fourth Quarter and Full Year 2025 Earnings Conference Call and Acknowledges Receipt of Deficiency Notice from Nasdaq | Press release | Business Wire | +0.89% | +3.45% | |
| ICON expands US early phase research capabilities with new clinic and outpatient centres | Press release | Business Wire | -1.08% | -3.60% | |
| Form NT 20-F ICON PLC For: May 01 | SEC filing · Form NT | SEC EDGAR | -0.30% | +0.34% | |
| Form 6-K ICON PLC For: Apr 29 | SEC filing · Form 6-K | SEC EDGAR | -1.70% | +0.58% | |
| ICON Provides Update on Audit Committee Investigation and Timing of Fourth Quarter and Full Year 2025 Financial Results | Press release | Business Wire | -1.70% | +0.58% | |
| ICON and Advarra Introduce New ‘Research-Ready,’ Connected Site Network Model | Press release | Business Wire | +0.59% | +1.40% | |
| Bronstein, Gewirtz & Grossman, LLC Is Investigating ICON plc (ICLR) And Encourages Shareholders to Connect | Press release | ACCESS Newswire | -0.06% | +1.65% | |
| Bronstein, Gewirtz & Grossman, LLC Initiates an Investigation into Allegations Against ICON plc (ICLR) And Encourages Shareholders to Reach Out | Press release | ACCESS Newswire | -0.32% | +0.74% | |
| Bronstein, Gewirtz & Grossman, LLC Announces an Investigation Against ICON plc (ICLR) and Encourages Shareholders to Learn More About the Investigation | Press release | ACCESS Newswire | -0.56% | -0.11% | |
| ICON plc (ICLR) Investigation: Bronstein, Gewirtz & Grossman, LLC Encourages Shareholders to Contact the Firm to Learn More About the Investigation | Press release | ACCESS Newswire | +2.25% | +3.95% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages ICON plc (ICLR) Stockholders to Inquire about Securities Investigation | Press release | ACCESS Newswire | -0.26% | +4.69% | |
| ICON plc Faces Investigation After Internal Probe Reveals Multi-Year Revenue Overstatement | Press release | PR Newswire | +0.63% | +8.16% | |
| Bronstein, Gewirtz & Grossman, LLC Is Investigating ICON plc (ICLR) And Encourages Stockholders to Connect | Press release | ACCESS Newswire | -0.39% | -1.57% | |
| ICON plc (ICLR) Investigation: Bronstein, Gewirtz & Grossman, LLC Encourages Stockholders to Contact the Firm to Learn More About the Investigation | Press release | ACCESS Newswire | +3.33% | -2.06% | |
| Bronstein, Gewirtz & Grossman, LLC Announces an Investigation Against ICON plc (ICLR) and Encourages Stockholders to Learn More About the Investigation | Press release | ACCESS Newswire | +3.33% | -2.06% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages ICON plc (ICLR) Investors to Inquire about Securities Investigation | Press release | ACCESS Newswire | +0.86% | +2.93% | |
| Form 6-K ICON PLC For: Feb 11 | SEC filing · Form 6-K | SEC EDGAR | -8.50% | +0.73% | |
| ICON plc Provides Update on Timing of Fourth Quarter and Full Year 2025 Earnings Results and Investigation into Accounting Practices | Press release | Business Wire | -8.50% | +0.73% | |
| ICON’s Accellacare Site Network Expands Oncology Research Capabilities With New Cancer Institute Partnership | Press release | Business Wire | +1.03% | +0.56% | |
| Form 6-K ICON PLC For: Jan 07 | SEC filing · Form 6-K | SEC EDGAR | +3.63% | +5.11% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the ICLR section they belong to.
Where else ICLR is measured.
ICLR earnings → · Analyst actions → · SEC filings →
Other Healthcare names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Insulet Corporation (PODD) | 1,198 | +0.14% | 55% |
| Invacare Corporation (IVC) | 1,193 | 0.00% | 49% |
| WRIGHT MEDICAL GROUP NV (WMGI) | 1,168 | -0.07% | 42% |
| Acadia Healthcare Company, Inc. (ACHC) | 1,165 | -0.02% | 49% |
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 ICON plc - Ordinary Shares's median reaction calculated?
Every labeled ICLR 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 1,176 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. 50% of ICLR'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 ICLR'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.