QuidelOrtho Corporation (QDEL)
QDEL moved a median of +0.02% 30 minutes after news, and -0.18% by the close. How QDEL actually reacts to news — the realized, point-in-time move the market made, measured across 965 labeled events over the last three years with zero look-ahead.
QDEL’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | -0.00% | 48% | 963 |
| 30-min | +0.02% | 50% | 963 |
| 60-min | +0.04% | 52% | 963 |
| to close | -0.18% | 47% | 964 |
| Middle 50% of QDEL reactions | -0.80% to +0.64% |
|---|---|
| Median reaction (30-min) | +0.02% |
| Measured reactions | 965 |
Half of all QuidelOrtho Corporation news events land between -0.80% and +0.64% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How QDEL reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 15 | +0.50% | 67% | +3.09% |
| Analyst downgrades | 22 | -0.08% | 41% | -1.32% |
| Rating reiterations | 36 | -0.34% | 33% | -0.10% |
| Price-target cuts | 10 | +0.09% | 50% | -0.06% |
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. 2 further classes were observed with fewer than 10 measured events and are not published. See how QDEL ranks against every other measured name →
That’s how QDEL usually reacts — get an email when it moves on news →Email me when QDEL moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to QDEL's baseline. Nothing else.
Recent QDEL events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| QuidelOrtho Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4) | Press release | PR Newswire | — | — | |
| Did QuidelOrtho Corporation Insiders Breach their Fiduciary Duties to Shareholders? | Press release | PR Newswire | +0.41% | +0.81% | |
| QuidelOrtho Appoints Sanjeev Sharma as Vice President of Investor Relations | Press release | PR Newswire | -2.59% | -0.24% | |
| Early Intervention Aids Emergency Medicine Teams in Identifying and Personalizing Sepsis Treatment | Press release | PR Newswire | +4.06% | +3.29% | |
| Form 8-K QuidelOrtho Corp For: Sep 23 | SEC filing · Form 8-K | SEC EDGAR | +4.06% | +3.29% | |
| Faster Answers, Better Decisions: ADLM 2026 Highlights | Press release | PR Newswire | +1.84% | +2.68% | |
| Form 10-Q QuidelOrtho Corp For: Jun 28 | SEC filing · Form 10-Q | SEC EDGAR | -4.46% | -3.04% | |
| Form 8-K QuidelOrtho Corp For: Aug 06 | SEC filing · Form 8-K | SEC EDGAR | -4.46% | -3.04% | |
| QuidelOrtho Reports Second Quarter 2026 Financial Results | Press release | PR Newswire | -4.46% | -3.04% | |
| QuidelOrtho to Report Second Quarter 2026 Financial Results | Press release | PR Newswire | -2.03% | -4.29% | |
| Beyond Fentanyl: How the Drug Crisis Is Changing | Press release | PR Newswire | +0.84% | -0.72% | |
| QuidelOrtho Announces Inducement Grant Under Nasdaq Listing Rule 5635(c)(4) | Press release | PR Newswire | +0.90% | -0.71% | |
| Form S-8 QuidelOrtho Corp | SEC filing · Form S-8 | SEC EDGAR | -3.16% | -1.23% | |
| Form 8-K QuidelOrtho Corp For: Jun 22 | SEC filing · Form 8-K | SEC EDGAR | +0.46% | +1.92% | |
| QuidelOrtho Appoints Micah Young as Chief Financial Officer | Press release | PR Newswire | +1.44% | -1.85% | |
| Form 8-K QuidelOrtho Corp For: Jun 16 | SEC filing · Form 8-K | SEC EDGAR | +2.23% | -5.61% | |
| QuidelOrtho and Allo Hope Foundation Join Forces to Advance Education, Connection and Early Testing for Alloimmunized Pregnancies | Press release | PR Newswire | -2.70% | +2.63% | |
| When Blood Compatibility Becomes a Pregnancy Risk | Press release | PR Newswire | -0.94% | +5.99% | |
| QuidelOrtho to Participate in Upcoming June 2026 Investor Conferences | Press release | PR Newswire | -1.93% | +4.47% | |
| Form SD QuidelOrtho Corp | SEC filing · Form SD | SEC EDGAR | +2.09% | +10.54% | |
| Form 10-Q QuidelOrtho Corp For: Mar 29 | SEC filing · Form 10-Q | SEC EDGAR | -1.66% | -1.79% | |
| Form 8-K QuidelOrtho Corp For: May 05 | SEC filing · Form 8-K | SEC EDGAR | -1.66% | -1.79% | |
| QuidelOrtho Reports First Quarter 2026 Financial Results | Press release | PR Newswire | -1.66% | -1.79% | |
| Form ARS QuidelOrtho Corp For: Dec 28 | SEC filing · Form ARS | SEC EDGAR | -0.45% | -1.80% | |
| Form DEF 14A QuidelOrtho Corp For: Jun 16 | SEC filing · Form DEF | SEC EDGAR | -0.45% | -1.80% | |
| Form DEFA14A QuidelOrtho Corp | SEC filing · Form DEFA14A | SEC EDGAR | -0.45% | -1.80% | |
| Understanding and Addressing Syphilis Trends - and What's Being Missed | Press release | PR Newswire | -1.94% | -5.31% | |
| QuidelOrtho Corporation Completes Acquisition of LEX Diagnostics | Press release | PR Newswire | +0.16% | +1.58% | |
| TTP Group Announces the Sale of LEX Diagnostics | Press release | Business Wire | +0.16% | +1.58% | |
| Form 8-K QuidelOrtho Corp For: Apr 15 | SEC filing · Form 8-K | SEC EDGAR | -1.86% | -7.41% | |
| QuidelOrtho Announces Preliminary Revenue for the First Quarter 2026 and Provides Update on Full-Year 2026 Guidance | Press release | PR Newswire | -1.86% | -7.41% | |
| Form 8-K QuidelOrtho Corp For: Mar 18 | SEC filing · Form 8-K | SEC EDGAR | +3.03% | -0.12% | |
| Nathaniel Sisitsky Joins QuidelOrtho as Chief Legal Officer | Press release | PR Newswire | +3.03% | -0.12% | |
| Faster Cardiac Answers with High-Sensitivity Troponin | Press release | PR Newswire | -0.43% | -3.24% | |
| Form 10-K QuidelOrtho Corp For: Dec 28 | SEC filing · Form 10-K | SEC EDGAR | -0.43% | -3.24% | |
| QuidelOrtho to Present at the 47th Annual Raymond James Institutional Investor Conference | Press release | PR Newswire | -0.43% | -3.24% | |
| QuidelOrtho Enters Strategic Supply Agreement to Expand Global Immunoassay Portfolio | Press release | PR Newswire | +0.73% | -3.10% | |
| Form 8-K QuidelOrtho Corp For: Feb 09 | SEC filing · Form 8-K | SEC EDGAR | +0.73% | -3.10% | |
| Form 8-K QuidelOrtho Corp For: Feb 11 | SEC filing · Form 8-K | SEC EDGAR | -11.51% | -11.04% | |
| QuidelOrtho Reports Fourth Quarter and Full-Year 2025 Financial Results | Press release | PR Newswire | -11.51% | -11.04% | |
| Form 8-K QuidelOrtho Corp For: Jan 30 | SEC filing · Form 8-K | SEC EDGAR | +1.59% | +0.52% | |
| QuidelOrtho Receives Excellence Services Label in EMEA and Two Stevie® Awards | Press release | PR Newswire | -0.04% | +1.45% | |
| Strengthening the blood supply: Awareness, challenges and donor impact | Press release | PR Newswire | +1.28% | +1.29% | |
| QuidelOrtho to Report Fourth Quarter and Full-Year 2025 Financial Results | Press release | PR Newswire | +0.15% | -8.63% | |
| Innovating Diagnostics and What's Next | Press release | PR Newswire | -0.07% | -5.03% | |
| QuidelOrtho To Participate In Upcoming Investor Conferences | Press release | PR Newswire | -0.92% | +8.36% | |
| The Power of Prevention: Detecting Diabetes Before It Strikes | Press release | PR Newswire | +1.06% | +0.09% | |
| Form 8-K QuidelOrtho Corp For: Nov 10 | SEC filing · Form 8-K | SEC EDGAR | +1.23% | -3.09% | |
| Form 10-Q QuidelOrtho Corp For: Sep 28 | SEC filing · Form 10-Q | SEC EDGAR | -5.95% | -19.71% | |
| Form 8-K QuidelOrtho Corp For: Nov 05 | SEC filing · Form 8-K | SEC EDGAR | -5.95% | -19.71% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the QDEL section they belong to.
Where else QDEL is measured.
QDEL earnings → · Analyst actions → · SEC filings →
Other Healthcare names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| PDL BIOPHARMA (PDLI) | 967 | 0.00% | 46% |
| Ultragenyx Pharmaceutical Inc. (RARE) | 967 | +0.12% | 56% |
| Recro Pharma, Inc. (REPH) | 965 | 0.00% | 43% |
| Athenex, Inc. (ATNX) | 964 | -0.43% | 41% |
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 QuidelOrtho Corporation's median reaction calculated?
Every labeled QDEL 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 965 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 QDEL'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 QDEL'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.