83.06 USD
AT CLOSE
NGG Stock After Hours
National Grid PLC
NGGNYSE • USD
Market: OPEN
After-hours trading runs 4:00 PM – 8:00 PM ET.
📅 NGG is scheduled to report earnings on Nov 5, 2026 before the open (confirmed), with an estimated EPS of $2.29. NGG earnings details →
NGG After Hours Chart
NGG After Hours News
Gap Analytics — 5-year history, 5% minimum gap
Over the past 5 years, NGG has had 6 qualifying gap events (gaps of 5% or more at the open) — 4 gap-ups and 2 gap-downs. Gap-ups averaged +6%, 25% have fully filled, median time to fill 2 trading days. Gap-downs averaged -7.7%, 50% have fully filled, median time to fill 7 trading days. Most recent: a -6.4% gap down on May 15, 2026, which filled in 7 trading days. Average 20-trading-day return after a NGG gap up: +7.33%. After a gap down: -6.3%.
Gap Ups4 events
Fill Rate
25.0%
Avg Gap
6.0%
Avg 50% Fill
3.5d
Avg Fill
2d
Gap Downs2 events
Fill Rate
50.0%
Avg Gap
7.7%
Avg 50% Fill
3d
Avg Fill
7d
Avg Gap Fill by Timeframes
Gap Ups
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 50% | 75% | 75% | 75% |
| fills 50% | 0% | 50% | 50% | 50% |
| fills 75% | 0% | 25% | 25% | 25% |
| fills 100% | 0% | 25% | 25% | 25% |
Gap Downs
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 0% | 50% | 50% | 50% |
| fills 50% | 0% | 50% | 50% | 50% |
| fills 75% | 0% | 50% | 50% | 50% |
| fills 100% | 0% | 0% | 50% | 50% |
Complete Gap History — 6 events
| Date | Gap From | Gap % | Status | Days to 50% | Days to Fill | % of Gap Filled After | |||
|---|---|---|---|---|---|---|---|---|---|
| 1 day | 1 week | 2 week | 4 week | ||||||
| 2026-05-15 | $87.43 | -6.41% | Filled | 3d | 7d | 7% | 98% | 100% | 100% |
| 2025-04-03 | $63.01 | +6.87% | Filled | 2d | 2d | 25% | 100% | 100% | 100% |
| 2024-05-23 | $67.84 | -9.04% | Open | — | — | 0% | 0% | 0% | 0% |
| 2022-11-10 | $51.58 | +6.22% | Open | — | — | 25% | 25% | 25% | 25% |
| 2022-10-17 | $45.08 | +5.24% | Open | 5d | — | 6% | 56% | 56% | 56% |
| 2021-12-08 | $61.12 | +5.69% | Open | — | — | 5% | 5% | 5% | 5% |
Frequently Asked Questions
What is NGG's after-hours price?
National Grid (NGG) has no recorded after-hours trades for the latest session. Its regular-session close was $83.06. After-hours quotes appear here when the stock trades between 4:00 PM and 8:00 PM ET.
When does NGG after-hours trading start and end?
After-hours trading in NGG on the NYSE runs from 4:00 PM to 8:00 PM ET on trading days, immediately after the regular session closes. Not every broker offers the full window, and liquidity thins sharply after about 6:30 PM ET.
Will NGG's after-hours move hold at the open?
An after-hours move that carries into the next session becomes an opening gap, and NGG's gap history is the best guide to what happens next: 25% of NGG gap-ups have fully filled, and 50% of gap-downs have filled over the past 5 years. Fill rates this high mean a large after-hours move is more often faded than extended.
When does NGG report earnings?
NGG is scheduled to report earnings on Nov 5, 2026 before the open (confirmed), with an estimated EPS of $2.29. Earnings are the most common cause of a large after-hours move, since most companies report after the close.