Gritstone bio, Inc. (GRTS) by event type
GRTS moves most on analyst downgrades — a median of -10.54% at 30 minutes across 10 measured events. Each row is measured over the last three years and read against the price at its own news timestamp. Back to the GRTS overview →
How GRTS reacts across 2 measured event types.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst downgrades 2,598 of 2,603 | 10 | -10.54% | 0% | -10.33% |
| Rating reiterations 3,318 of 3,522 | 17 | -0.51% | 47% | +0.96% |
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. 4 further classes were observed with fewer than 10 measured events and are not published.
That’s how GRTS usually reacts — get an email when it moves on news →Every name measured for these event types: Analyst downgrades → · Rating reiterations → · GRTS overview →
Other Healthcare names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Brainstorm Cell Therapeutics Inc. (BCLI) | 660 | 0.00% | 47% |
| OPHTHOTECH CORP COMMON (OPHT) | 660 | -0.20% | 43% |
| Inovio Pharmaceuticals, Inc. (INO) | 658 | -0.29% | 43% |
| VistaGen Therapeutics, Inc. (VTGN) | 658 | +0.16% | 52% |
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.