bluebird bio, Inc. (BLUE) by event type
BLUE moves most on analyst downgrades — a median of -9.08% at 30 minutes across 11 measured events. Each row is measured over the last three years and read against the price at its own news timestamp. Back to the BLUE overview →
How BLUE reacts across 4 measured event types.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst downgrades 2,594 of 2,603 | 11 | -9.08% | 9% | -12.23% |
| Coverage initiations 2,010 of 2,283 | 25 | -0.69% | 40% | -0.20% |
| Rating reiterations 3,258 of 3,522 | 28 | -0.42% | 39% | -1.81% |
| Price-target cuts 37 of 1,527 | 13 | +0.56% | 62% | -0.42% |
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. 2 further classes were observed with fewer than 10 measured events and are not published.
That’s how BLUE usually reacts — get an email when it moves on news →Every name measured for these event types: Analyst downgrades → · Coverage initiations → · Rating reiterations → · Price-target cuts → · BLUE overview →
Other Healthcare names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Cerecor, Inc (CERC) | 795 | -0.03% | 43% |
| Second Sight Medical Products, Inc. (EYES) | 788 | -0.56% | 34% |
| Actinium Pharmaceuticals, Inc. (Delaware) (ATNM) | 784 | 0.00% | 45% |
| Heat Biologics, Inc. (HTBX) | 781 | -0.40% | 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.