XBiotech Inc. (XBIT)
XBIT moved a median of 0.00% 30 minutes after news, and -0.89% by the close. How XBIT actually reacts to news — the realized, point-in-time move the market made, measured across 165 labeled events over the last three years with zero look-ahead.
XBIT’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 28% | 116 |
| 30-min | 0.00% | 45% | 159 |
| 60-min | -0.37% | 40% | 164 |
| to close | -0.89% | 34% | 165 |
| Middle 50% of XBIT reactions | -1.10% to +0.70% |
|---|---|
| Median reaction (30-min) | 0.00% |
| Measured reactions | 165 |
Half of all XBiotech Inc. news events land between -1.10% and +0.70% 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 XBIT moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to XBIT's baseline. Nothing else.
Recent XBIT events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form ARS XBiotech Inc. For: Oct 02 | SEC filing · Form ARS | SEC EDGAR | +0.00% | +0.00% | |
| Form DEF 14A XBiotech Inc. For: Nov 24 | SEC filing · Form DEF | SEC EDGAR | +0.00% | +0.00% | |
| Form 10-Q XBiotech Inc. For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | — | -2.92% | |
| Form 10-Q XBiotech Inc. For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | — | -0.40% | |
| Form 10-K/A XBiotech Inc. For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | — | -1.18% | |
| Form 10-K XBiotech Inc. For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | — | -0.86% | |
| Form S-8 XBiotech Inc. | SEC filing · Form S-8 | SEC EDGAR | — | +0.00% | |
| Form 8-K XBiotech Inc. For: Dec 05 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -0.41% | |
| Form 10-Q XBiotech Inc. For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | +1.42% | +3.75% | |
| Form 8-K/A XBiotech Inc. For: Jun 24 | SEC filing · Form 8-K | SEC EDGAR | — | +2.83% | |
| Form 8-K XBiotech Inc. For: Oct 01 | SEC filing · Form 8-K | SEC EDGAR | -0.19% | -0.38% | |
| Form 8-K XBiotech Inc. For: Aug 29 | SEC filing · Form 8-K | SEC EDGAR | — | -0.66% | |
| Form 10-Q XBiotech Inc. For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.16% | +0.96% | |
| Form ARS XBiotech Inc. For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | +0.00% | +0.00% | |
| Form DEF 14A XBiotech Inc. For: Aug 29 | SEC filing · Form DEF | SEC EDGAR | +0.00% | +0.00% | |
| Form 8-K XBiotech Inc. For: Jun 24 | SEC filing · Form 8-K | SEC EDGAR | -1.84% | -2.21% | |
| Form 10-Q XBiotech Inc. For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | -1.37% | -1.37% | |
| Form 10-K/A XBiotech Inc. For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +0.00% | +3.40% | |
| Form 8-K XBiotech Inc. For: Apr 01 | SEC filing · Form 8-K | SEC EDGAR | -2.45% | -4.28% | |
| Form 8-K XBiotech Inc. For: Mar 27 | SEC filing · Form 8-K | SEC EDGAR | -2.45% | -7.36% | |
| Form 10-K XBiotech Inc. For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | -0.57% | -2.01% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages XBiotech Inc. (XBIT) Shareholders to Inquire about Securities Investigation | Press release | Accesswire | -0.54% | -3.33% | |
| Bronstein, Gewirtz & Grossman, LLC Is Investigating XBiotech Inc. (XBIT) And Encourages Shareholders to Connect | Press release | Accesswire | -1.07% | -2.67% | |
| Bronstein, Gewirtz & Grossman, LLC Initiates an Investigation into Allegations Against XBiotech Inc. (XBIT) And Encourages Shareholders to Reach Out | Press release | Accesswire | +0.00% | -0.82% | |
| XBiotech Inc. (XBIT) Investigation: Bronstein, Gewirtz & Grossman, LLC Encourages Shareholders to Contact the Firm to Learn More About the Investigation | Press release | Accesswire | +0.55% | +1.37% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages XBiotech Inc. (XBIT) Stockholders to Inquire about Securities Investigation | Press release | Accesswire | -1.53% | -2.30% | |
| Bronstein, Gewirtz & Grossman, LLC Announces an Investigation Against XBiotech Inc. (XBIT) and Encourages Stockholders to Learn More About the Investigation | Press release | Accesswire | -1.53% | -2.05% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages XBiotech Inc. (XBIT) Investors to Inquire about Securities Investigation | Press release | Accesswire | — | -1.55% | |
| Bronstein, Gewirtz & Grossman, LLC Initiates an Investigation into Allegations Against XBiotech Inc. (XBIT) And Encourages Stockholders to Reach Out | Press release | Accesswire | +0.00% | +3.46% | |
| Bronstein, Gewirtz & Grossman, LLC Is Investigating XBiotech Inc. (XBIT) And Encourages Stockholders to Connect | Press release | Accesswire | +1.63% | +0.54% | |
| Wolf Haldenstein Adler Freeman & Herz LLP announces that it is investigating XBiotech for potential violations of securities laws | Press release | GlobeNewswire | +0.00% | +2.10% | |
| Form 8-K XBiotech Inc. For: Dec 31 | SEC filing · Form 8-K | SEC EDGAR | +0.77% | +1.02% | |
| Form 10-Q XBiotech Inc. For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | -1.17% | -1.53% | |
| Form 10-Q XBiotech Inc. For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | — | +5.14% | |
| Form 8-K XBiotech Inc. For: Jun 20 | SEC filing · Form 8-K | SEC EDGAR | — | -4.66% | |
| Form 10-Q XBiotech Inc. For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | — | -3.26% | |
| Form 10-K/A XBiotech Inc. For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +0.36% | -2.51% | |
| Form ARS XBiotech Inc. For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | -1.09% | -2.91% | |
| Form DEF 14A XBiotech Inc. For: Jun 20 | SEC filing · Form DEF | SEC EDGAR | -1.09% | -2.91% | |
| Form DEFA14A XBiotech Inc. | SEC filing · Form DEFA14A | SEC EDGAR | -1.09% | -2.91% | |
| Form 10-K/A XBiotech Inc. For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | — | -3.47% | |
| Form 10-K XBiotech Inc. For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | -1.00% | -1.34% | |
| Form 8-K XBiotech Inc. For: Jan 03 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -1.40% | |
| Form 10-Q XBiotech Inc. For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | — | +0.13% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the XBIT section they belong to.
Where else XBIT is measured.
XBIT earnings → · Analyst actions → · SEC filings →
Other Healthcare names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Innoviva, Inc. (INVA) | 166 | +0.10% | 54% |
| MediWound Ltd. - Ordinary Shares (MDWD) | 166 | +0.11% | 53% |
| Minerva Neurosciences, Inc (NERV) | 164 | 0.00% | 48% |
| NIGHTSTAR THERAPEUTICS PLC AMERICAN DEPOSITARY SHA (NITE) | 164 | -0.04% | 28% |
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 XBiotech Inc.'s median reaction calculated?
Every labeled XBIT 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 165 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 XBIT'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 XBIT'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.