Personalis, Inc. (PSNL)
PSNL moved a median of -0.16% 30 minutes after news, and -0.02% by the close. How PSNL actually reacts to news — the realized, point-in-time move the market made, measured across 312 labeled events over the last three years with zero look-ahead.
PSNL’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | -0.21% | 40% | 309 |
| 30-min | -0.16% | 45% | 310 |
| 60-min | -0.25% | 49% | 310 |
| to close | -0.02% | 47% | 312 |
| Middle 50% of PSNL reactions | -2.05% to +1.73% |
|---|---|
| Median reaction (30-min) | -0.16% |
| Measured reactions | 312 |
Half of all Personalis, Inc. news events land between -2.05% and +1.73% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How PSNL reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Rating reiterations | 56 | 0.00% | 43% | -1.87% |
| Price-target raises | 17 | -0.81% | 35% | -2.20% |
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. 4 further classes were observed with fewer than 10 measured events and are not published. See how PSNL ranks against every other measured name →
That’s how PSNL usually reacts — get an email when it moves on news →Email me when PSNL moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to PSNL's baseline. Nothing else.
Recent PSNL events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Personalis Brings Resistance Mutation Tracking to NeXT Personal® MRD Test | Press release | Business Wire | -0.03% | +0.00% | |
| Form 8-K Personalis, Inc. For: Oct 02 | SEC filing · Form 8-K | SEC EDGAR | +0.89% | +1.59% | |
| Form CT ORDER Personalis, Inc. | SEC filing · Form CT | SEC EDGAR | -0.06% | -0.55% | |
| BRODSKY & SMITH SHAREHOLDER UPDATE: Notifying Investors of the Following Investigations: Personalis, Inc. (Nasdaq – PSNL), Werewolf Therapeutics, Inc. (Nasdaq – HOWL), Beazer Homes USA, Inc. (NYSE – BZH), MarketAxess Holdings Inc. (Nasdaq – MKTX) | Press release | GlobeNewswire | -0.21% | -1.21% | |
| Form 8-K Personalis, Inc. For: Aug 20 | SEC filing · Form 8-K | SEC EDGAR | +0.48% | +10.06% | |
| Halper Sadeh LLC is Investigating Whether UTZ, PSNL, DSGR are Obtaining Fair Deals for their Shareholders | Press release | GlobeNewswire | +0.22% | +3.13% | |
| Are BOW, UTZ, PSNL Obtaining Fair Deals for their Shareholders? | Press release | PR Newswire | -0.07% | -0.04% | |
| Form 10-Q Personalis, Inc. For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | -0.41% | +0.59% | |
| Form 8-K Personalis, Inc. For: Aug 04 | SEC filing · Form 8-K | SEC EDGAR | -0.41% | +0.59% | |
| Personalis Reports Second Quarter Results and Recent Highlights | Press release | Business Wire | -0.41% | +0.59% | |
| PSNL Alert: Monsey Firm of Wohl & Fruchter Investigating Fairness of the Proposed Sale of Personalis to Tempus AI | Press release | GlobeNewswire | -0.89% | +0.30% | |
| Halper Sadeh LLC is Investigating Whether FNWD and PSNL are Obtaining Fair Deals for their Shareholders | Press release | GlobeNewswire | +1.35% | +3.28% | |
| Halper Sadeh LLC is Investigating Whether UTZ, PSNL, LXP are Obtaining Fair Deals for their Shareholders | Press release | GlobeNewswire | -0.90% | -6.52% | |
| BRODSKY & SMITH SHAREHOLDER UPDATE: Notifying Investors of the Following Investigations: Personalis, Inc. (Nasdaq – PSNL), Distribution Solutions Group, Inc. (Nasdaq – DSGR), Cross Country Healthcare, Inc. (Nasdaq – CCRN), Nuvalent, Inc. (Nasdaq – NUVL) | Press release | GlobeNewswire | +0.00% | +0.30% | |
| Form 8-K Personalis, Inc. For: Jul 20 | SEC filing · Form 8-K | SEC EDGAR | -8.49% | -8.69% | |
| PSNL Stock Alert: Halper Sadeh LLC is Investigating Whether Personalis, Inc. is Obtaining a Fair Price for Shareholders | Press release | Business Wire | — | -0.30% | |
| Tempus to Acquire Personalis, More Tightly Integrating Molecular Residual Disease (MRD) into Its AI-Enabled Precision Oncology Platform | Press release | Business Wire | -8.49% | -8.69% | |
| Personalis Accelerates Global Expansion with UKCA Marking for NeXT Personal®, Expanding MRD Access and Biopharma Support in Great Britain | Press release | Business Wire | -1.55% | -0.73% | |
| Personalis Enables Global Biopharma Support with CE-IVD Marked Specimen Collection Kits | Press release | Business Wire | -0.50% | -3.08% | |
| Personalis Highlights Early Colorectal Cancer Recurrence Detection and Ultrasensitive MRD Performance Across a Broad Set of Tumor Types at ASCO 2026 | Press release | Business Wire | -0.54% | +1.09% | |
| Personalis to Highlight Breadth of NeXT Personal® Ultra-Sensitive ctDNA Data at ASCO 2026 Annual Meeting, Including Podium Presentation from TRACERx Consortium | Press release | Business Wire | +0.80% | +2.52% | |
| Form 8-K Personalis, Inc. For: May 19 | SEC filing · Form 8-K | SEC EDGAR | -0.76% | +4.96% | |
| Personalis Secures Fourth Medicare Coverage Decision for NeXT Personal®, Expanding Breast Cancer Coverage to Pre-Surgical Treatment Monitoring | Press release | Business Wire | +2.01% | +10.26% | |
| Personalis to Participate in Upcoming Investor Events | Press release | Business Wire | -1.15% | -2.45% | |
| Form 8-K Personalis, Inc. For: May 12 | SEC filing · Form 8-K | SEC EDGAR | +1.08% | +4.03% | |
| Personalis Receives Medicare Coverage for NeXT Personal® for Immunotherapy Monitoring Across Late-stage Solid Tumors | Press release | Business Wire | +3.30% | -6.30% | |
| Form 10-Q Personalis, Inc. For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +0.00% | +4.91% | |
| Form 8-K Personalis, Inc. For: May 07 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +4.91% | |
| Form S-3ASR Personalis, Inc. | SEC filing · Form S-3ASR | SEC EDGAR | +0.00% | +4.91% | |
| Personalis Reports First Quarter Results and Recent Highlights | Press release | Business Wire | +0.00% | +4.91% | |
| Personalis to Announce First Quarter 2026 Financial Results | Press release | Business Wire | +0.34% | +3.39% | |
| Personalis Highlights Clinical Impact of Ultrasensitive ctDNA Monitoring and New Therapy Resistance Tracking at AACR 2026 | Press release | Business Wire | +1.03% | -0.80% | |
| Personalis and Collaborators to Highlight Ultrasensitive ctDNA Data and New Therapy Resistance Tracking Capabilities at AACR 2026 | Press release | Business Wire | -0.33% | +5.52% | |
| Form ARS Personalis, Inc. For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | +0.97% | -0.45% | |
| Form DEF 14A Personalis, Inc. For: May 12 | SEC filing · Form DEF | SEC EDGAR | +0.97% | -0.45% | |
| Form DEFA14A Personalis, Inc. | SEC filing · Form DEFA14A | SEC EDGAR | +0.97% | -0.45% | |
| Personalis to Participate in the 25th Annual Needham Virtual Conference | Press release | Business Wire | +1.29% | +6.30% | |
| Form 8-K Personalis, Inc. For: Mar 13 | SEC filing · Form 8-K | SEC EDGAR | +0.14% | -0.57% | |
| Personalis Appoints Dr. Richard Chen as President to Further Accelerate MRD Adoption | Press release | Business Wire | +0.14% | -0.57% | |
| Personalis Announces New Publication Advancing Neoadjuvant Treatment Monitoring in Breast Cancer with NeXT Personal® | Press release | Business Wire | -0.78% | -13.97% | |
| Form 10-K Personalis, Inc. For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +3.37% | +5.23% | |
| Form 8-K Personalis, Inc. For: Feb 26 | SEC filing · Form 8-K | SEC EDGAR | +3.37% | +5.23% | |
| Form S-8 Personalis, Inc. | SEC filing · Form S-8 | SEC EDGAR | +3.37% | +5.23% | |
| Personalis Reports Fourth Quarter and Full Year 2025 Results and Recent Highlights | Press release | Business Wire | +3.37% | +5.23% | |
| Personalis to Participate in the TD Cowen 46th Annual Healthcare Conference | Press release | Business Wire | +0.00% | +5.63% | |
| Personalis to Announce Fourth Quarter and Full Year 2025 Financial Results | Press release | Business Wire | -0.35% | -2.84% | |
| Personalis Receives Medicare Coverage for NeXT Personal® in Lung Cancer Surveillance | Press release | Business Wire | +0.12% | +1.05% | |
| Personalis Announces New Publication Expanding Evidence for Ultrasensitive ctDNA Monitoring of Cancer Immunotherapy Response Across Solid Tumors | Press release | Business Wire | +0.59% | -0.32% | |
| Personalis to Participate in the BTIG 13th Annual MedTech, Digital Health, Life Science & Diagnostic Tools Conference | Press release | Business Wire | -3.70% | -0.30% | |
| Personalis Pioneers Advancement in MRD Testing with the Launch of its Real-Time Variant Tracker™ | Press release | Business Wire | -1.18% | +1.39% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the PSNL section they belong to.
Where else PSNL is measured.
PSNL earnings → · Analyst actions → · SEC filings →
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How the numbers are made.
How is Personalis, Inc.'s median reaction calculated?
Every labeled PSNL 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 312 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. 45% of PSNL'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 PSNL'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.