Atara Biotherapeutics, Inc. (ATRA) by event type
ATRA moves most on analyst downgrades — a median of -1.97% at 30 minutes across 18 measured events. Each row is measured over the last three years and read against the price at its own news timestamp. Back to the ATRA overview →
How ATRA reacts across 3 measured event types.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades 2,270 of 2,717 | 17 | -0.38% | 35% | +1.73% |
| Analyst downgrades 2,530 of 2,603 | 18 | -1.97% | 28% | -23.77% |
| Rating reiterations 84 of 3,522 | 24 | +0.72% | 67% | +2.58% |
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. 3 further classes were observed with fewer than 10 measured events and are not published.
That’s how ATRA usually reacts — get an email when it moves on news →Every name measured for these event types: Analyst upgrades → · Analyst downgrades → · Rating reiterations → · ATRA overview →
Other Healthcare names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| CYTRX CORP (CYTR) | 821 | -0.00% | 43% |
| Sinovac Biotech, Ltd. - Ordinary Shares (Antigua/Barbudo) (SVA) | 814 | 0.00% | 46% |
| Ionis Pharmaceuticals, Inc. (IONS) | 811 | +0.02% | 52% |
| Applied Genetic Technologies Corporation (AGTC) | 805 | 0.00% | 45% |
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.