Bio-Rad Laboratories, Inc. Class A (BIO)
BIO moved a median of -0.06% 30 minutes after news, and -0.23% by the close. How BIO actually reacts to news — the realized, point-in-time move the market made, measured across 231 labeled events over the last three years with zero look-ahead.
BIO’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | -0.01% | 37% | 227 |
| 30-min | -0.06% | 46% | 231 |
| 60-min | -0.04% | 48% | 231 |
| to close | -0.23% | 42% | 229 |
| Middle 50% of BIO reactions | -0.73% to +0.73% |
|---|---|
| Median reaction (30-min) | -0.06% |
| Measured reactions | 231 |
Half of all Bio-Rad Laboratories, Inc. Class A news events land between -0.73% and +0.73% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How BIO reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 17 | +0.09% | 53% | -0.25% |
| Analyst downgrades | 16 | +1.20% | 63% | +0.88% |
| Rating reiterations | 29 | +0.19% | 62% | +0.17% |
| Price-target raises | 10 | +0.19% | 80% | +0.55% |
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 BIO ranks against every other measured name →
That’s how BIO usually reacts — get an email when it moves on news →Email me when BIO moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to BIO's baseline. Nothing else.
Recent BIO events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Bio-Rad to Report Third-Quarter 2026 Financial Results on Wednesday, November 4, 2026 | Press release | Business Wire | +0.77% | -0.29% | |
| Bio-Rad to Participate in Fireside Chat During Bernstein Insights Healthcare Leaders and Disruptors 3rd Annual Forum | Press release | Business Wire | +1.76% | +0.21% | |
| Bio-Rad to Participate in Fireside Chat During Wells Fargo’s 21st Annual Healthcare Conference | Press release | Business Wire | +0.95% | +0.88% | |
| Bio-Rad Reports Second-Quarter 2026 Financial Results | Press release | Business Wire | +0.21% | +2.31% | |
| Bio-Rad to Report Second-Quarter 2026 Financial Results on Tuesday, August 4, 2026 | Press release | Business Wire | +2.00% | +2.56% | |
| Form SD BIO-RAD LABORATORIES, | SEC filing · Form SD | SEC EDGAR | +0.26% | +1.06% | |
| Bio-Rad to Participate in Upcoming Investor Conferences | Press release | Business Wire | +0.23% | -0.81% | |
| Bio-Rad Reports First-Quarter 2026 Financial Results | Press release | Business Wire | -1.68% | -1.88% | |
| Form 10-Q BIO-RAD LABORATORIES, For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | -1.68% | -1.88% | |
| Form 8-K BIO-RAD LABORATORIES, For: Apr 30 | SEC filing · Form 8-K | SEC EDGAR | -1.68% | -1.88% | |
| Form S-8 BIO-RAD LABORATORIES, | SEC filing · Form S-8 | SEC EDGAR | -1.68% | -1.88% | |
| Form 8-K BIO-RAD LABORATORIES, For: Apr 21 | SEC filing · Form 8-K | SEC EDGAR | -1.09% | -0.18% | |
| Bio-Rad to Report First-Quarter 2026 Financial Results on Thursday, April 30, 2026 | Press release | Business Wire | -0.04% | +1.39% | |
| Form ARS BIO-RAD LABORATORIES, For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | +0.41% | +1.49% | |
| Form DEF 14A BIO-RAD LABORATORIES, For: Apr 21 | SEC filing · Form DEF | SEC EDGAR | +0.41% | +1.49% | |
| Form 8-K BIO-RAD LABORATORIES, For: Feb 19 | SEC filing · Form 8-K | SEC EDGAR | -0.02% | +0.48% | |
| Form 10-K BIO-RAD LABORATORIES, For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +0.00% | -3.19% | |
| Bio-Rad Reports Fourth-Quarter and Full-Year 2025 Financial Results | Press release | Business Wire | +0.00% | -3.19% | |
| Form 8-K BIO-RAD LABORATORIES, For: Feb 12 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -3.19% | |
| Bio-Rad to Report Fourth Quarter and Full Year 2025 Financial Results on Thursday, February 12, 2026 | Press release | Business Wire | -3.52% | -1.28% | |
| Bio-Rad’s Management to Host Investor Meetings at J.P. Morgan's 44th Annual Healthcare Conference | Press release | Business Wire | -0.52% | +0.48% | |
| Bio-Rad Reports Third-Quarter 2025 Financial Results | Press release | Business Wire | +3.46% | -3.60% | |
| Form 10-Q BIO-RAD LABORATORIES, For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | +3.46% | -3.60% | |
| Form 8-K BIO-RAD LABORATORIES, For: Oct 29 | SEC filing · Form 8-K | SEC EDGAR | +3.46% | -3.60% | |
| Bio-Rad to Report Third Quarter 2025 Financial Results on Wednesday, October 29, 2025 | Press release | Business Wire | +0.67% | +0.40% | |
| Form 8-K BIO-RAD LABORATORIES, For: Sep 29 | SEC filing · Form 8-K | SEC EDGAR | -0.82% | +3.62% | |
| Bio-Rad Laboratories, Inc. Co-Founder and Director Emeritus Alice Schwartz Passes Away | Press release | Business Wire | -0.82% | +3.62% | |
| Form 8-K BIO-RAD LABORATORIES, For: Aug 26 | SEC filing · Form 8-K | SEC EDGAR | -0.19% | -0.57% | |
| Bio-Rad's Management to Participate in Upcoming Investor Conferences | Press release | Business Wire | +0.00% | -1.38% | |
| Bio-Rad to Host Droplet Digital PCR Webinar on Tuesday, August 26, 2025 | Press release | Business Wire | -1.07% | +2.57% | |
| Bio-Rad Reports Second-Quarter 2025 Financial Results | Press release | Business Wire | -1.07% | +2.57% | |
| Form 10-Q BIO-RAD LABORATORIES, For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | -1.07% | +2.57% | |
| Form 8-K BIO-RAD LABORATORIES, For: Jul 31 | SEC filing · Form 8-K | SEC EDGAR | -1.07% | +2.57% | |
| Bio-Rad Appoints Rajat Mehta Executive Vice President, Global Commercial Operations | Press release | Business Wire | -0.01% | — | |
| Form 8-K BIO-RAD LABORATORIES, For: Jul 28 | SEC filing · Form 8-K | SEC EDGAR | -0.01% | — | |
| Bio-Rad to Report Second Quarter 2025 Financial Results on Thursday, July 31, 2025 | Press release | Business Wire | -0.97% | -2.16% | |
| Bio-Rad Expands Droplet Digital PCR Offering Through Strategic Acquisition and Platform Rollout | Press release | Business Wire | -0.91% | -0.75% | |
| Form 8-K BIO-RAD LABORATORIES, For: Jun 30 | SEC filing · Form 8-K | SEC EDGAR | -1.05% | +2.72% | |
| Bio-Rad’s Management to Host Investor Meetings During Jefferies Global Healthcare Conference | Press release | Business Wire | -1.79% | +0.25% | |
| Form SD BIO-RAD LABORATORIES, | SEC filing · Form SD | SEC EDGAR | +0.00% | -6.27% | |
| Bio-Rad's Management to Participate in Fireside Chat During 2025 RBC Capital Markets Global Healthcare Conference | Press release | Business Wire | -1.54% | -1.75% | |
| Bio-Rad Reports First-Quarter 2025 Financial Results | Press release | Business Wire | -3.13% | -5.46% | |
| Form 10-Q BIO-RAD LABORATORIES, For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | -3.13% | -5.46% | |
| Form 8-K BIO-RAD LABORATORIES, For: May 01 | SEC filing · Form 8-K | SEC EDGAR | -3.13% | -5.46% | |
| Form 8-K BIO-RAD LABORATORIES, For: Apr 22 | SEC filing · Form 8-K | SEC EDGAR | -0.41% | -1.82% | |
| Bio-Rad to Report First Quarter 2025 Financial Results on Thursday, May 1, 2025 | Press release | Business Wire | -0.61% | -0.62% | |
| Form ARS BIO-RAD LABORATORIES, For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | +0.13% | +0.66% | |
| Form DEF 14A BIO-RAD LABORATORIES, For: Apr 22 | SEC filing · Form DEF | SEC EDGAR | +0.13% | +0.66% | |
| Form 8-K BIO-RAD LABORATORIES, For: Feb 21 | SEC filing · Form 8-K | SEC EDGAR | +0.02% | +0.03% | |
| Form 10-K BIO-RAD LABORATORIES, For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +0.03% | +2.80% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the BIO section they belong to.
Where else BIO is measured.
BIO earnings → · Analyst actions → · SEC filings →
Other Healthcare names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Omeros Corporation (OMER) | 232 | +0.49% | 57% |
| SANUWAVE Health, Inc. (SNWV) | 232 | 0.00% | 49% |
| Cronos Group Inc. - Common Share (CRON) | 230 | +0.27% | 62% |
| Forward Pharma A/S - American Depositary Shares (FWP) | 230 | 0.00% | 37% |
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 Bio-Rad Laboratories, Inc. Class A's median reaction calculated?
Every labeled BIO 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 231 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 BIO'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 BIO'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.