iRhythm Holdings, Inc. (IRTC)
IRTC moved a median of -0.12% 30 minutes after news, and -0.15% by the close. How IRTC actually reacts to news — the realized, point-in-time move the market made, measured across 1,114 labeled events over the last three years with zero look-ahead.
IRTC’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 45% | 1,109 |
| 30-min | -0.12% | 46% | 1,112 |
| 60-min | -0.25% | 43% | 1,112 |
| to close | -0.15% | 46% | 1,107 |
| Middle 50% of IRTC reactions | -0.72% to +0.46% |
|---|---|
| Median reaction (30-min) | -0.12% |
| Measured reactions | 1,114 |
Half of all iRhythm Holdings, Inc. news events land between -0.72% and +0.46% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How IRTC reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 21 | -0.26% | 43% | +1.15% |
| Coverage initiations | 15 | +0.09% | 60% | +0.43% |
| Rating reiterations | 94 | -0.06% | 48% | -0.19% |
| Price-target raises | 37 | -0.15% | 41% | +0.02% |
| Price-target cuts | 29 | +0.07% | 52% | -0.23% |
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 IRTC ranks against every other measured name →
That’s how IRTC usually reacts — get an email when it moves on news →Email me when IRTC moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to IRTC's baseline. Nothing else.
Recent IRTC events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| iRhythm Holdings to Report Third Quarter 2026 Financial Results on November 5, 2026 | Press release | GlobeNewswire | +1.90% | -2.01% | |
| Did iRhythm Technologies, Inc. Insiders Breach their Fiduciary Duties to Shareholders? | Press release | PR Newswire | +0.51% | +1.25% | |
| iRhythm Technologies, Inc. (IRTC) Investigation: Bronstein, Gewirtz & Grossman, LLC Encourages Shareholders to Contact the Firm to Learn More About the Investigation | Press release | ACCESS Newswire | +0.00% | +0.84% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages iRhythm Technologies, Inc. (IRTC) Investors to Inquire about Securities Investigation | Press release | ACCESS Newswire | -1.50% | -0.41% | |
| Bronstein, Gewirtz & Grossman, LLC Initiates an Investigation into Allegations Against iRhythm Technologies, Inc. (IRTC) And Encourages Stockholders to Reach Out | Press release | ACCESS Newswire | +0.19% | -0.44% | |
| Form 8-K iRhythm Holdings, Inc. For: Oct 05 | SEC filing · Form 8-K | SEC EDGAR | +0.63% | -1.01% | |
| iRhythm Completes Acquisition of VitalConnect, Expanding Its Cardiac Monitoring Platform Across Ambulatory, Inpatient and Hospital-to-Home Care | Press release | GlobeNewswire | +0.63% | -1.01% | |
| iRhythm Provides Update on Cybersecurity Incident Previously Disclosed in June 2026 | Press release | GlobeNewswire | +0.63% | -1.01% | |
| iRhythm Technologies, Inc. (IRTC) Investigation: Bronstein, Gewirtz & Grossman, LLC Encourages Stockholders to Contact the Firm to Learn More About the Investigation | Press release | ACCESS Newswire | -0.11% | +2.87% | |
| Bronstein, Gewirtz & Grossman, LLC Announces an Investigation Against iRhythm Technologies, Inc. (IRTC) and Encourages Stockholders to Learn More About the Investigation | Press release | ACCESS Newswire | -0.04% | +0.05% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages iRhythm Technologies, Inc. (IRTC) Investors to Inquire about Securities Investigation | Press release | ACCESS Newswire | -0.18% | -0.28% | |
| Form 8-K iRhythm Holdings, Inc. For: Sep 22 | SEC filing · Form 8-K | SEC EDGAR | +4.13% | +0.67% | |
| Bronstein, Gewirtz & Grossman, LLC Is Investigating iRhythm Technologies, Inc. (IRTC) And Encourages Shareholders to Connect | Press release | ACCESS Newswire | -0.43% | +1.06% | |
| Bronstein, Gewirtz & Grossman, LLC Initiates an Investigation into Allegations Against iRhythm Technologies, Inc. (IRTC) And Encourages Shareholders to Reach Out | Press release | ACCESS Newswire | +0.03% | -0.19% | |
| Bronstein, Gewirtz & Grossman, LLC Announces an Investigation Against iRhythm Technologies, Inc. (IRTC) and Encourages Shareholders to Learn More About the Investigation | Press release | ACCESS Newswire | -0.17% | -0.36% | |
| iRhythm Technologies, Inc. (IRTC) Investigation: Bronstein, Gewirtz & Grossman, LLC Encourages Shareholders to Contact the Firm to Learn More About the Investigation | Press release | ACCESS Newswire | +0.44% | +1.05% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages iRhythm Technologies, Inc. (IRTC) Stockholders to Inquire about Securities Investigation | Press release | ACCESS Newswire | -0.17% | -0.17% | |
| Bronstein, Gewirtz & Grossman, LLC Is Investigating iRhythm Technologies, Inc. (IRTC) And Encourages Stockholders to Connect | Press release | ACCESS Newswire | -0.89% | +0.27% | |
| iRhythm Technologies, Inc. (IRTC) Investigation: Bronstein, Gewirtz & Grossman, LLC Encourages Stockholders to Contact the Firm to Learn More About the Investigation | Press release | ACCESS Newswire | -0.12% | -0.32% | |
| iRhythm Holdings to Participate in Wells Fargo 21st Annual Healthcare Conference | Press release | GlobeNewswire | +0.67% | -1.13% | |
| Bronstein, Gewirtz & Grossman, LLC Announces an Investigation Against iRhythm Technologies, Inc. (IRTC) and Encourages Stockholders to Learn More About the Investigation | Press release | ACCESS Newswire | +0.03% | -1.37% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages iRhythm Technologies, Inc. (IRTC) Investors to Inquire about Securities Investigation | Press release | ACCESS Newswire | -0.44% | -2.92% | |
| Did iRhythm Technologies, Inc. Insiders Breach their Fiduciary Duties to Shareholders? | Press release | PR Newswire | +0.83% | -6.35% | |
| Form 8-K iRhythm Holdings, Inc. For: Aug 11 | SEC filing · Form 8-K | SEC EDGAR | -2.36% | +2.42% | |
| Form 10-Q iRhythm Holdings, Inc. For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.49% | -2.83% | |
| Form 8-K iRhythm Holdings, Inc. For: Aug 05 | SEC filing · Form 8-K | SEC EDGAR | +0.49% | -2.83% | |
| Form 8-K iRhythm Holdings, Inc. For: Jul 31 | SEC filing · Form 8-K | SEC EDGAR | +0.49% | -2.83% | |
| iRhythm Holdings Announces Second Quarter 2026 Financial Results | Press release | GlobeNewswire | +0.49% | -2.83% | |
| iRhythm to Acquire VitalConnect, Expanding Its Cardiac Monitoring Platform Across Ambulatory, Inpatient and Hospital-to-Home Care | Press release | GlobeNewswire | +0.49% | -2.83% | |
| Did iRhythm Technologies, Inc. Insiders Breach their Fiduciary Duties to Shareholders? | Press release | PR Newswire | -0.01% | +1.85% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages iRhythm Technologies, Inc. (IRTC) Shareholders to Inquire about Securities Investigation | Press release | ACCESS Newswire | -0.04% | +2.38% | |
| Bronstein, Gewirtz & Grossman, LLC Is Investigating iRhythm Technologies, Inc. (IRTC) And Encourages Shareholders to Connect | Press release | ACCESS Newswire | +1.47% | +1.21% | |
| Bronstein, Gewirtz & Grossman, LLC Initiates an Investigation into Allegations Against iRhythm Technologies, Inc. (IRTC) And Encourages Shareholders to Reach Out | Press release | ACCESS Newswire | -0.19% | +0.60% | |
| Bronstein, Gewirtz & Grossman, LLC Announces an Investigation Against iRhythm Technologies, Inc. (IRTC) and Encourages Shareholders to Learn More About the Investigation | Press release | ACCESS Newswire | +0.04% | -1.54% | |
| iRhythm Holdings to Report Second Quarter 2026 Financial Results on August 6, 2026 | Press release | GlobeNewswire | +0.07% | -2.69% | |
| iRhythm Technologies, Inc. (IRTC) Investigation: Bronstein, Gewirtz & Grossman, LLC Encourages Shareholders to Contact the Firm to Learn More About the Investigation | Press release | ACCESS Newswire | -0.59% | -3.62% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages iRhythm Technologies, Inc. (IRTC) Stockholders to Inquire about Securities Investigation | Press release | ACCESS Newswire | -0.67% | +0.97% | |
| Bronstein, Gewirtz & Grossman, LLC Initiates an Investigation into Allegations Against iRhythm Technologies, Inc. (IRTC) And Encourages Stockholders to Reach Out | Press release | ACCESS Newswire | -0.83% | -0.11% | |
| Did iRhythm Technologies, Inc. Insiders Breach their Fiduciary Duties to Shareholders? | Press release | PR Newswire | -0.83% | -0.11% | |
| Bronstein, Gewirtz & Grossman, LLC Is Investigating iRhythm Technologies, Inc. (IRTC) And Encourages Stockholders to Connect | Press release | ACCESS Newswire | -0.02% | +1.93% | |
| iRhythm Technologies, Inc. (IRTC) Investigation: Bronstein, Gewirtz & Grossman, LLC Encourages Stockholders to Contact the Firm to Learn More About the Investigation | Press release | ACCESS Newswire | +0.73% | +1.77% | |
| Bronstein, Gewirtz & Grossman, LLC Announces an Investigation Against iRhythm Technologies, Inc. (IRTC) and Encourages Stockholders to Learn More About the Investigation | Press release | ACCESS Newswire | +1.64% | +0.49% | |
| Bronstein, Gewirtz & Grossman, LLC Is Investigating iRhythm Technologies, Inc. (IRTC) And Encourages Shareholders to Connect | Press release | ACCESS Newswire | -0.20% | +1.43% | |
| Bronstein, Gewirtz & Grossman, LLC Initiates an Investigation into Allegations Against iRhythm Technologies, Inc. (IRTC) And Encourages Shareholders to Reach Out | Press release | ACCESS Newswire | -0.07% | +2.38% | |
| Bronstein, Gewirtz & Grossman, LLC Announces an Investigation Against iRhythm Technologies, Inc. (IRTC) and Encourages Shareholders to Learn More About the Investigation | Press release | ACCESS Newswire | -0.91% | -0.15% | |
| iRhythm Technologies, Inc. (IRTC) Investigation: Bronstein, Gewirtz & Grossman, LLC Encourages Shareholders to Contact the Firm to Learn More About the Investigation | Press release | ACCESS Newswire | -0.17% | -0.45% | |
| Form 8-K iRhythm Holdings, Inc. For: Jun 10 | SEC filing · Form 8-K | SEC EDGAR | -0.81% | -4.41% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages iRhythm Technologies, Inc. (IRTC) Stockholders to Inquire about Securities Investigation | Press release | ACCESS Newswire | -0.28% | +1.54% | |
| iRhythm Technologies, Inc. (IRTC) Investigation: Bronstein, Gewirtz & Grossman, LLC Encourages Shareholders to Contact the Firm to Learn More About the Investigation | Press release | ACCESS Newswire | +1.23% | -0.91% | |
| Form 8-K iRhythm Holdings, Inc. For: Jun 03 | SEC filing · Form 8-K | SEC EDGAR | -0.33% | -0.82% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the IRTC section they belong to.
Where else IRTC is measured.
IRTC earnings → · Analyst actions → · SEC filings →
Other Healthcare names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Neovasc Inc. - Common Shares (NVCN) | 1,136 | -0.47% | 37% |
| Iovance Biotherapeutics, Inc. (IOVA) | 1,135 | +0.11% | 51% |
| GENOMIC HEALTH (GHDX) | 1,111 | 0.00% | 49% |
| INDIVIOR PLC S/ADR (INVVY) | 1,105 | 0.00% | 33% |
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 iRhythm Holdings, Inc.'s median reaction calculated?
Every labeled IRTC 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 1,114 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. 46% of IRTC'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 IRTC'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.