Penumbra, Inc. (PEN)
PEN moved a median of +0.06% 30 minutes after news, and +0.06% by the close. How PEN actually reacts to news — the realized, point-in-time move the market made, measured across 369 labeled events over the last three years with zero look-ahead.
PEN’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | +0.01% | 51% | 366 |
| 30-min | +0.06% | 60% | 368 |
| 60-min | +0.10% | 55% | 368 |
| to close | +0.06% | 52% | 367 |
| Middle 50% of PEN reactions | -0.28% to +0.65% |
|---|---|
| Median reaction (30-min) | +0.06% |
| Measured reactions | 369 |
Half of all Penumbra, Inc. news events land between -0.28% and +0.65% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How PEN reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 18 | +0.26% | 56% | -0.03% |
| Analyst downgrades | 48 | +0.65% | 88% | +0.47% |
| Coverage initiations | 19 | +0.23% | 63% | -0.08% |
| Rating reiterations | 112 | +0.22% | 61% | +0.09% |
| Price-target raises | 37 | -0.14% | 35% | +0.39% |
| Price-target cuts | 23 | -0.09% | 39% | -0.18% |
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 PEN ranks against every other measured name →
That’s how PEN usually reacts — get an email when it moves on news →Email me when PEN moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to PEN's baseline. Nothing else.
Recent PEN events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| New STORM-PE Data Demonstrate Correlation Between Clinical Assessments and Real-world Functional Recovery Captured Through Wearable Technology in Patients with Pulmonary Embolism | Press release | PR Newswire | +0.12% | -0.02% | |
| Form 10-Q Penumbra Inc For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.11% | +0.72% | |
| Form 8-K Penumbra Inc For: Jul 30 | SEC filing · Form 8-K | SEC EDGAR | +0.11% | +0.72% | |
| Penumbra, Inc. Reports Second Quarter 2026 Financial Results | Press release | PR Newswire | +0.11% | +0.72% | |
| THUNDER Study Demonstrates Penumbra's THUNDERBOLT is Safe and Effective for Stroke Care | Press release | PR Newswire | +0.02% | -0.07% | |
| First Patient Enrolled in Penumbra's FORWARD Study Evaluating Mechanical Thrombectomy and Computer Assisted Vacuum Thrombectomy for Distal Acute Ischemic Stroke | Press release | PR Newswire | -0.24% | -0.54% | |
| Form 8-K Penumbra Inc For: Jun 18 | SEC filing · Form 8-K | SEC EDGAR | -0.16% | +0.08% | |
| Penumbra Expands CAVT for Stroke to Europe with CE Mark for THUNDERBOLT | Press release | PR Newswire | +0.26% | -0.01% | |
| Penumbra's THUNDERBOLT Receives FDA Clearance - Bringing Computer Assisted Vacuum Thrombectomy Technology to Stroke | Press release | PR Newswire | -1.06% | -0.96% | |
| Form SD Penumbra Inc | SEC filing · Form SD | SEC EDGAR | -0.05% | +0.17% | |
| Form 8-K Penumbra Inc For: May 06 | SEC filing · Form 8-K | SEC EDGAR | +0.74% | +0.26% | |
| Form 10-Q Penumbra Inc For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +0.74% | +0.26% | |
| Form 8-K Penumbra Inc For: May 06 | SEC filing · Form 8-K | SEC EDGAR | +0.74% | +0.26% | |
| Penumbra, Inc. Reports First Quarter 2026 Financial Results | Press release | PR Newswire | +0.74% | +0.26% | |
| Form ARS Penumbra Inc For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | -0.29% | +0.29% | |
| Form DEF 14A Penumbra Inc For: Jun 18 | SEC filing · Form DEF | SEC EDGAR | -0.29% | +0.29% | |
| Form DEFA14A Penumbra Inc | SEC filing · Form DEFA14A | SEC EDGAR | -0.29% | +0.29% | |
| New STORM-PE Data Show Computer Assisted Vacuum Thrombectomy with Anticoagulation Resulted in Significantly Better Functional Outcomes at 90 Days Compared to Anticoagulation Alone for Pulmonary Embolism Patients | Press release | PR Newswire | -0.04% | +0.45% | |
| Form DEFM14A Penumbra Inc | SEC filing · Form DEFM14A | SEC EDGAR | +0.35% | +0.65% | |
| Form 10-K Penumbra Inc For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | -0.01% | -0.23% | |
| Form 8-K Penumbra Inc For: Feb 25 | SEC filing · Form 8-K | SEC EDGAR | — | -0.16% | |
| Penumbra, Inc. Reports Fourth Quarter and Full Year 2025 Financial Results | Press release | PR Newswire | — | -0.16% | |
| Halper Sadeh LLC is Investigating Whether PEN, CVGW, SNCY, BKKT are Obtaining Fair Deals for their Shareholders | Press release | GlobeNewswire | -0.11% | -0.04% | |
| Halper Sadeh LLC Encourages PEN, FOLD, DBRG, FFIC Shareholders to Contact the Firm to Discuss Their Rights | Press release | GlobeNewswire | -0.02% | -0.28% | |
| BRODSKY & SMITH SHAREHOLDER UPDATE: Notifying Investors of the Following Investigations: RAPT Therapeutics, Inc. (Nasdaq – RAPT), Penumbra, Inc. (NYSE – PEN), Calavo Growers, Inc. (Nasdaq – CVGW), FONAR Corporation (Nasdaq - FONR) | Press release | GlobeNewswire | -0.38% | -0.01% | |
| BRODSKY & SMITH SHAREHOLDER UPDATE: Notifying Investors of the Following Investigations: Penumbra, Inc. (NYSE – PEN), Calavo Growers, Inc. (Nasdaq – CVGW), Clearwater Analytics Holdings, Inc. (NYSE - CWAN) | Press release | GlobeNewswire | -0.01% | -0.42% | |
| Form 8-K Penumbra Inc For: Jan 14 | SEC filing · Form 8-K | SEC EDGAR | +0.07% | +0.43% | |
| PEN Stock Alert: Halper Sadeh LLC is Investigating Whether the Sale of Penumbra, Inc. is Fair to Shareholders | Press release | Business Wire | +0.07% | +0.43% | |
| Penumbra, Inc. Provides Preliminary Update on Fourth Quarter and Full Year 2025 Financial Results | Press release | PR Newswire | +0.07% | +0.43% | |
| Penumbra, Inc. to Present at the 44th Annual J.P. Morgan Healthcare Conference | Press release | PR Newswire | +0.96% | -0.70% | |
| Penumbra, Inc. to Present at the Piper Sandler 37th Annual Healthcare Conference | Press release | PR Newswire | -0.04% | -1.34% | |
| Form 10-Q Penumbra Inc For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | +1.20% | +0.01% | |
| Form 8-K Penumbra Inc For: Nov 05 | SEC filing · Form 8-K | SEC EDGAR | +1.20% | +0.01% | |
| Penumbra, Inc. Reports Third Quarter 2025 Financial Results | Press release | PR Newswire | +1.20% | +0.01% | |
| Latest Data from Landmark STORM-PE Randomized Controlled Trial Demonstrate that CAVT with Anticoagulation Significantly Improves Functional Outcomes for Patients with Pulmonary Embolism | Press release | PR Newswire | +0.06% | +0.55% | |
| Landmark STORM-PE Randomized Controlled Trial Finds Computer Assisted Vacuum Thrombectomy (CAVT) with Anticoagulation Superior to Traditional Anticoagulation Treatment for Pulmonary Embolism | Press release | PR Newswire | -0.73% | -4.39% | |
| Penumbra, Inc. Schedules Investor Event at TCT Conference on October 26, 2025; Earnings Release and Conference Call for Third Quarter 2025 Scheduled for November 5, 2025 | Press release | PR Newswire | -0.65% | +0.94% | |
| New Survey Shows Management of Blood Clots is Inconsistent, Even for Patients with the Same Risk Profile | Press release | PR Newswire | -0.13% | +0.52% | |
| Form 8-K Penumbra Inc For: Aug 22 | SEC filing · Form 8-K | SEC EDGAR | -0.74% | +0.45% | |
| Penumbra, Inc. Names Shruthi Narayan as Company President | Press release | PR Newswire | -0.74% | +0.45% | |
| Penumbra, Inc. to Present at Upcoming Investor Conferences | Press release | PR Newswire | -0.03% | -1.81% | |
| Penumbra, Inc. to Present at the Canaccord Genuity 45th Annual Growth Conference | Press release | PR Newswire | +0.23% | +0.71% | |
| Form 10-Q Penumbra Inc For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | -2.60% | +0.96% | |
| Form 8-K Penumbra Inc For: Jul 29 | SEC filing · Form 8-K | SEC EDGAR | -2.60% | +0.96% | |
| Penumbra, Inc. Reports Second Quarter 2025 Financial Results | Press release | PR Newswire | -2.60% | +0.96% | |
| Penumbra, Inc. Schedules Second Quarter 2025 Earnings Release and Conference Call for July 29, 2025 | Press release | PR Newswire | -0.40% | -0.10% | |
| Penumbra, Inc. Announces Completion of Enrollment for Landmark STORM-PE Randomized Controlled Trial | Press release | PR Newswire | -0.04% | +0.46% | |
| Penumbra Introduces the Ruby® XL System - the Longest, Largest, and Softest Coil on the Market for Vascular Embolization | Press release | PR Newswire | +0.38% | +0.99% | |
| Form 8-K Penumbra Inc For: May 28 | SEC filing · Form 8-K | SEC EDGAR | +0.15% | -3.93% | |
| Form SD Penumbra Inc | SEC filing · Form SD | SEC EDGAR | +0.15% | -3.93% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the PEN section they belong to.
Where else PEN is measured.
PEN earnings → · Analyst actions → · SEC filings →
Other Healthcare names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| RITTER PHARMACEUTICALS (RTTR) | 374 | -0.61% | 37% |
| MIRAGEN THERAPEUTICS INC (MGEN) | 369 | -0.39% | 39% |
| Kura Oncology, Inc. (KURA) | 368 | -0.13% | 49% |
| Arcus Biosciences, Inc. (RCUS) | 368 | -0.09% | 45% |
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 Penumbra, Inc.'s median reaction calculated?
Every labeled PEN 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 369 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. 60% of PEN'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 PEN'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.