3D Systems Corporation (DDD) by event type
DDD moves most on analyst upgrades — a median of +0.49% at 30 minutes across 14 measured events. Each row is measured over the last three years and read against the price at its own news timestamp. Back to the DDD overview →
How DDD reacts across 2 measured event types.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades 374 of 2,717 | 14 | +0.49% | 57% | -0.69% |
| Rating reiterations 1,583 of 3,522 | 47 | 0.00% | 49% | -0.34% |
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 DDD usually reacts — get an email when it moves on news →Every name measured for these event types: Analyst upgrades → · Rating reiterations → · DDD overview →
Other Technology names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| GoDaddy Inc. Class A (GDDY) | 1,001 | -0.03% | 47% |
| Zix Corporation (ZIXI) | 1,001 | 0.00% | 49% |
| RUDOLPH TECHNOLOGIES (RTEC) | 991 | 0.00% | 51% |
| Stamps.com Inc. (STMP) | 990 | 0.00% | 50% |
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.