Altimmune, Inc. (ALT) by event type
ALT moves most on coverage initiations — a median of +0.77% at 30 minutes across 22 measured events. Each row is measured over the last three years and read against the price at its own news timestamp. Back to the ALT overview →
How ALT reacts across 2 measured event types.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Coverage initiations 230 of 2,268 | 22 | +0.77% | 68% | +0.23% |
| Rating reiterations 2,970 of 3,515 | 55 | -0.23% | 29% | -0.80% |
Last 3 years, pulled 2026-08-31. 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 ALT usually reacts — get an email when it moves on news →Every name measured for these event types: Coverage initiations → · Rating reiterations → · ALT overview →
Other Healthcare names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| GENMARK DIAGNOSTICS (GNMK) | 1,451 | +0.06% | 51% |
| GSK plc American Depositary Shares (Each representing two Ordinary Shares) (GSK) | 1,448 | +0.01% | 51% |
| PerkinElmer, Inc. (PKI) | 1,409 | +0.11% | 56% |
| Zoetis Inc. Class A (ZTS) | 1,406 | +0.02% | 51% |
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.