ACM Research, Inc. - Class A (ACMR) by event type
ACMR moves most on rating reiterations — a median of -0.43% at 30 minutes across 34 measured events. Each row is measured over the last three years and read against the price at its own news timestamp. Back to the ACMR overview →
How ACMR reacts across 3 measured event types.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades 2,267 of 2,717 | 12 | -0.38% | 42% | -1.07% |
| Analyst downgrades 1,795 of 2,603 | 10 | -0.15% | 50% | +0.65% |
| Rating reiterations 3,269 of 3,522 | 34 | -0.43% | 35% | -0.71% |
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 ACMR usually reacts — get an email when it moves on news →Every name measured for these event types: Analyst upgrades → · Analyst downgrades → · Rating reiterations → · ACMR overview →
Other Technology names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| HealthStream, Inc. (HSTM) | 359 | +0.09% | 53% |
| Science Applications International Corporation (SAIC) | 359 | +0.08% | 55% |
| AstroNova, Inc. (ALOT) | 358 | 0.00% | 34% |
| Baidu, Inc. - American Depositary Shares, each representing 8 ordinary share (BIDU) | 357 | +0.02% | 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.