Biogen Inc. (BIIB) by event type
BIIB moves most on analyst upgrades — a median of +0.44% at 30 minutes across 36 measured events. Each row is measured over the last three years and read against the price at its own news timestamp. Back to the BIIB overview →
How BIIB reacts across 6 measured event types.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades 424 of 2,717 | 36 | +0.44% | 61% | +0.64% |
| Analyst downgrades 1,967 of 2,603 | 44 | -0.27% | 41% | -0.44% |
| Coverage initiations 873 of 2,283 | 20 | +0.11% | 55% | -0.69% |
| Rating reiterations 2,812 of 3,522 | 258 | -0.16% | 38% | -0.19% |
| Price-target raises 1,041 of 1,790 | 54 | -0.03% | 48% | -0.44% |
| Price-target cuts 364 of 1,527 | 69 | +0.11% | 58% | +0.13% |
Last 3 years, pulled 2026-09-21. Reaction = percent move vs. the price at the news timestamp. Counts and medians only. The rank under each event type orders every name measured for it by median 30-min reaction, most positive first — so a low rank on a downgrade means this name falls harder than most, not that it moves less. Names with an identical median share a rank; a name the cross-section does not carry shows no rank rather than a guessed one.
That’s how BIIB usually reacts — get an email when it moves on news →Every name measured for these event types: Analyst upgrades → · Analyst downgrades → · Coverage initiations → · Rating reiterations → · Price-target raises → · Price-target cuts → · BIIB overview →
Other Healthcare names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Orthofix Medical Inc. (OFIX) | 1,217 | +0.06% | 51% |
| IMMUNOMEDICS (IMMU) | 1,213 | -0.08% | 45% |
| Rocket Pharmaceuticals, Inc. (RCKT) | 1,202 | -0.02% | 47% |
| Insulet Corporation (PODD) | 1,198 | +0.14% | 55% |
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.