United Microelectronics Corporation (NEW) (UMC) by event type
UMC moves most on analyst downgrades — a median of -0.35% at 30 minutes across 31 measured events. Each row is measured over the last three years and read against the price at its own news timestamp. Back to the UMC overview →
How UMC reacts across 2 measured event types.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades 1,150 of 2,717 | 24 | +0.07% | 58% | +0.51% |
| Analyst downgrades 2,058 of 2,603 | 31 | -0.35% | 39% | -0.27% |
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 UMC usually reacts — get an email when it moves on news →Every name measured for these event types: Analyst upgrades → · Analyst downgrades → · UMC overview →
Other Technology names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Xperi Inc. (XPER) | 242 | +0.20% | 57% |
| TrueCar, Inc. (TRUE) | 241 | -0.17% | 38% |
| Ascent Solar Technologies, Inc (ASTI) | 240 | -0.70% | 38% |
| CEVA, Inc. (CEVA) | 240 | -0.08% | 42% |
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.