National Grid Transco, PLC National Grid PLC (NEW) American Depositary Shares (NGG) by event type
NGG moves most on analyst downgrades — a median of -0.11% at 30 minutes across 28 measured events. Each row is measured over the last three years and read against the price at its own news timestamp. Back to the NGG overview →
How NGG reacts across 3 measured event types.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades 1,279 of 2,717 | 25 | +0.03% | 60% | +0.16% |
| Analyst downgrades 1,705 of 2,603 | 28 | -0.11% | 43% | -0.44% |
| Rating reiterations 1,916 of 3,522 | 13 | -0.01% | 39% | -0.05% |
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. 1 further class was observed with fewer than 10 measured events and is not published.
That’s how NGG usually reacts — get an email when it moves on news →Every name measured for these event types: Analyst upgrades → · Analyst downgrades → · Rating reiterations → · NGG overview →
Other Utilities names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Huaneng Power Intl (HNP) | 615 | 0.00% | 48% |
| FirstEnergy Corp. (FE) | 598 | -0.04% | 46% |
| California Water Service Group (CWT) | 572 | -0.07% | 46% |
| CPFL ENERGIA (CPL) | 555 | 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.