Harvard Bioscience, Inc. (HBIO)
HBIO moved a median of -0.30% 30 minutes after news, and -0.42% by the close. How HBIO actually reacts to news — the realized, point-in-time move the market made, measured across 183 labeled events over the last three years with zero look-ahead.
HBIO’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 37% | 173 |
| 30-min | -0.30% | 43% | 178 |
| 60-min | -0.46% | 43% | 182 |
| to close | -0.42% | 43% | 179 |
| Middle 50% of HBIO reactions | -2.49% to +1.15% |
|---|---|
| Median reaction (30-min) | -0.30% |
| Measured reactions | 183 |
Half of all Harvard Bioscience, Inc. news events land between -2.49% and +1.15% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
Email me when HBIO moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to HBIO's baseline. Nothing else.
Recent HBIO events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Harvard Bioscience Announces Creation of Scientific Advisory Board | Press release | GlobeNewswire | — | +0.12% | |
| Form 10-Q HARVARD BIOSCIENCE INC For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.00% | -0.96% | |
| Form 8-K HARVARD BIOSCIENCE INC For: Aug 11 | SEC filing · Form 8-K | SEC EDGAR | -4.69% | -5.69% | |
| Harvard Bioscience Announces Second Quarter 2026 Financial Results | Press release | GlobeNewswire | -4.69% | -5.69% | |
| Harvard Bioscience Schedules Second Quarter 2026 Earnings Conference Call for August 11, 2026 at 8:00 AM ET | Press release | GlobeNewswire | -0.83% | -1.33% | |
| Form S-8 HARVARD BIOSCIENCE INC | SEC filing · Form S-8 | SEC EDGAR | +0.00% | +5.56% | |
| Form 8-K HARVARD BIOSCIENCE INC For: Jun 02 | SEC filing · Form 8-K | SEC EDGAR | -2.30% | -0.15% | |
| Form SD HARVARD BIOSCIENCE INC | SEC filing · Form SD | SEC EDGAR | — | +1.23% | |
| Form 10-Q HARVARD BIOSCIENCE INC For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +0.00% | +1.37% | |
| Form 8-K HARVARD BIOSCIENCE INC For: May 12 | SEC filing · Form 8-K | SEC EDGAR | -2.46% | -11.31% | |
| Harvard Bioscience Announces First Quarter 2026 Financial Results | Press release | GlobeNewswire | -2.46% | -11.31% | |
| Harvard Bioscience to Participate in Upcoming Investor Conferences | Press release | GlobeNewswire | +0.00% | -5.83% | |
| Harvard Bioscience Schedules First Quarter 2026 Earnings Conference Call for May 12, 2026 at 8:00 AM ET | Press release | GlobeNewswire | -0.15% | -5.56% | |
| Form DEF 14A HARVARD BIOSCIENCE INC For: Jun 02 | SEC filing · Form DEF | SEC EDGAR | +0.00% | +1.06% | |
| Form DEFA14A HARVARD BIOSCIENCE INC | SEC filing · Form DEFA14A | SEC EDGAR | +0.00% | +1.06% | |
| Form 8-K HARVARD BIOSCIENCE INC For: Mar 17 | SEC filing · Form 8-K | SEC EDGAR | +1.21% | -1.81% | |
| Form 10-K HARVARD BIOSCIENCE INC For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +2.13% | +0.74% | |
| Form 8-K HARVARD BIOSCIENCE INC For: Mar 12 | SEC filing · Form 8-K | SEC EDGAR | -0.60% | -1.42% | |
| Harvard Bioscience Announces Fourth Quarter and Full-Year 2025 Financial Results | Press release | GlobeNewswire | -0.60% | -1.42% | |
| Form 8-K HARVARD BIOSCIENCE INC For: Mar 06 | SEC filing · Form 8-K | SEC EDGAR | +1.56% | +7.53% | |
| Form 8-K HARVARD BIOSCIENCE INC For: Mar 06 | SEC filing · Form 8-K | SEC EDGAR | -7.67% | -6.54% | |
| Harvard Bioscience Announces Reverse Stock Split | Press release | GlobeNewswire | -7.67% | -6.54% | |
| Harvard Bioscience to Participate in KeyBanc’s Virtual Healthcare Forum | Press release | GlobeNewswire | +0.81% | -4.15% | |
| Harvard Bioscience Schedules Fourth Quarter 2025 Earnings Conference Call for March 12, 2026 at 8:00 AM ET | Press release | GlobeNewswire | +1.14% | -0.46% | |
| Form 8-K HARVARD BIOSCIENCE INC For: Feb 10 | SEC filing · Form 8-K | SEC EDGAR | -11.76% | -5.80% | |
| Form EFFECT HARVARD BIOSCIENCE INC | SEC filing · Form EFFECT | SEC EDGAR | -11.76% | -5.80% | |
| Harvard Bioscience Announces Preliminary Fourth Quarter Financial Results, Positive Outlook for 2026 & Outlines Long-Term Strategic Focus Areas | Press release | GlobeNewswire | -11.76% | -5.80% | |
| Form DEF 14A HARVARD BIOSCIENCE INC For: Mar 06 | SEC filing · Form DEF | SEC EDGAR | +1.96% | +0.44% | |
| Form S-3 HARVARD BIOSCIENCE INC | SEC filing · Form S-3 | SEC EDGAR | +1.96% | +0.44% | |
| Form 8-K HARVARD BIOSCIENCE INC For: Jan 23 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -3.67% | |
| Harvard Bioscience Announces Strategic Consolidation of Manufacturing Operations to Improve Efficiency and Support Long-Term Growth | Press release | GlobeNewswire | +0.00% | -3.67% | |
| Form 8-K HARVARD BIOSCIENCE INC For: Jan 19 | SEC filing · Form 8-K | SEC EDGAR | +3.10% | +4.92% | |
| Form PRE 14A HARVARD BIOSCIENCE INC For: Jan 20 | SEC filing · Form PRE | SEC EDGAR | +3.10% | +4.92% | |
| Form 8-K HARVARD BIOSCIENCE INC For: Jan 12 | SEC filing · Form 8-K | SEC EDGAR | -2.88% | -5.99% | |
| Form 8-K HARVARD BIOSCIENCE INC For: Dec 17 | SEC filing · Form 8-K | SEC EDGAR | +3.85% | +9.00% | |
| Harvard Bioscience Announces the Successful Completion of Debt Refinancing with Comprehensive Growth Financing Package | Press release | GlobeNewswire | +3.85% | +9.00% | |
| Form 8-K HARVARD BIOSCIENCE INC For: Dec 05 | SEC filing · Form 8-K | SEC EDGAR | -1.97% | -0.42% | |
| Form 10-Q HARVARD BIOSCIENCE INC For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | +2.80% | +5.46% | |
| Form 8-K HARVARD BIOSCIENCE INC For: Nov 06 | SEC filing · Form 8-K | SEC EDGAR | +1.66% | -4.41% | |
| Harvard Bioscience Announces Third Quarter 2025 Financial Results | Press release | GlobeNewswire | +1.66% | -4.41% | |
| Harvard Bioscience Schedules Third Quarter 2025 Earnings Conference Call for November 6, 2025 at 8:00 AM ET | Press release | GlobeNewswire | -0.96% | +11.90% | |
| Form 8-K HARVARD BIOSCIENCE INC For: Oct 02 | SEC filing · Form 8-K | SEC EDGAR | -0.46% | -2.37% | |
| Harvard Bioscience Expands Distribution Agreement with Fisher Scientific to Include United States | Press release | GlobeNewswire | +5.82% | -3.98% | |
| Form 8-K HARVARD BIOSCIENCE INC For: Sep 05 | SEC filing · Form 8-K | SEC EDGAR | +0.42% | -2.78% | |
| Harvard Bioscience Announces Appointment of Stephen DeNelsky to Board of Directors | Press release | GlobeNewswire | +0.42% | -2.78% | |
| Form 8-K HARVARD BIOSCIENCE INC For: Aug 12 | SEC filing · Form 8-K | SEC EDGAR | +6.17% | +4.13% | |
| Form 10-Q HARVARD BIOSCIENCE INC For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.01% | — | |
| Form 8-K HARVARD BIOSCIENCE INC For: Aug 08 | SEC filing · Form 8-K | SEC EDGAR | +0.01% | — | |
| Form 8-K HARVARD BIOSCIENCE INC For: Aug 11 | SEC filing · Form 8-K | SEC EDGAR | -3.94% | -6.10% | |
| Harvard Bioscience Announces Second Quarter 2025 Financial Results | Press release | GlobeNewswire | -3.94% | -6.10% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the HBIO section they belong to.
Where else HBIO is measured.
HBIO earnings → · Analyst actions → · SEC filings →
Other Healthcare names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| NORTH AMER CANNABIS HLDG (USMJ) | 184 | 0.00% | 32% |
| Cutera, Inc. (CUTR) | 183 | +0.09% | 51% |
| ELEKTA B SHS UNSP/ADR (EKTAY) | 182 | 0.00% | 17% |
| ENDRA Life Sciences Inc. (NDRA) | 181 | -0.92% | 38% |
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 Harvard Bioscience, Inc.'s median reaction calculated?
Every labeled HBIO 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 183 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. 43% of HBIO'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 HBIO'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.