Insider buying last 90 days
No open-market insider purchases were filed for NGG in the last 90 days.
From Form 4 filings, dated to when each was filed.
Every NGG insider filing, plotted on the chart in Gekko.Open NGG in Gekko
National Grid (NGG) Stock Analysis & Forecast
$76.80−0.80 (−1.0%)
Close on Sep 18, 2026. Page updated Sep 19, 9:18 pm ET.
Gekko Brief
AI summaryNational Grid closes at $76.80, down 1% on the day, sitting below both its 50-day average of $80.09 and its 200-day average of $83.13, with the 50-day itself below the 200-day. The GekkoIndex reads 61.3, placing the stock in the Accumulation zone, while the price stands 9.1% below the Gekko Fair Value of $84.53. Over the past six months the stock has returned -10.2%, though the one-year return remains positive at 7.9%.
This week's news centers on a new venture and analyst attention. National Grid Partners has invested in Terragrit, a move described as supporting faster operational decision-testing across the energy sector. Separately, National Grid shares rose 2.16% in London trading, outperforming the FTSE 100's 0.28% gain, though still 20.62% below their 52-week high of £14.29 set on March 2nd. Analyst activity was mixed: Marketbeat reports a consensus "Reduce" recommendation from ten brokerages with an $85.50 average price target, while Bernstein resumed coverage with an "outperform" rating and a Buy call, citing regulated growth potential and undemanding valuation. Separate commentary noted the stock's RSI near 25.95 after a 7.8% four-week decline, alongside a 0.7% rise in consensus EPS estimates over 30 days.
Looking ahead, the next earnings report is scheduled for 5 November 2026, before the open, 46 days out and beyond a typical 20-trading-day holding window. No insider, Congressional, or unusual options activity appears in the respective 90-day and 30-day windows. Seasonality data covering five years shows the next 20 trading days from this point averaging -3.5%, with gains in only 1 of those years — a pattern worth noting alongside the current gap to Gekko Fair Value.
Written by AI and checked automatically against the figures on this page. Generated Sep 20, 2026 from the data above.
Price vs fair value
Close $76.80200-day averageGekko Fair Value $84.53
Key stats
- Market cap
- $77.21B
- P/E ratio
- 17.2
- Forward P/E
- 12.7
- EPS, TTM
- $4.52
- Revenue, TTM
- $17.69B
- Profit margin
- 18.3%
- Dividend yield
- 4.26%
- Beta
- 0.59
- Volume
- 768,356 avg 818,173
- 1-year return
- +7.9%
- Typical daily move
- ±1.6%
- Typical 20-day move
- ±4%
- 50-day average
- $80.09
- 200-day average
- $83.13
- Next earnings
- Nov 5 before open
- Shares outstanding
- 1.01B
National Grid swing-trade checklist
National Grid scores 3 supportive, 0 mixed and 2 headwinds across the 5 checklist items with data.
Six things swing traders check before a 20-day hold, read from the latest data.
3 supportive0 mixed2 headwinds
- Trendheadwind
Below 50 and 200-day
Close $76.80 is below the 50-day ($80.09) and 200-day ($83.13) averages, and the 50-day is below the 200-day.
See the chart - GekkoIndexsupportive
61.3, Accumulation
Reading 61.3 is in the Accumulation zone.
See the GekkoIndex - Fair valuesupportive
9.1% below
Price is 9.1% below Gekko Fair Value (more than 5% below).
See fair value - Smart moneyno data
No data
No insider, Congress or unusual options activity in the window.
See smart money - Earnings risksupportive
Reports in 46 days
Next report Nov 5, 2026, 46 days away — outside a typical 20-trading-day hold.
See earnings - Seasonalityheadwind
−3.5% on average
From this point in the calendar, the next 20 trading days averaged −3.5% over 5 years, rising in 1 of them.
See seasonality
A description of current data, not a recommendation. How this page works
National Grid stock chart and price history
National Grid closed at $76.80 on Sep 18, 2026, +7.9% over the past year, inside a 52-week range of $69.99 to $94.64.
Close50-day average200-day averageVolume
Use the left and right arrow keys to read daily values.
Performance Breakdown
- 1 month
- −4.8%
- 3 months
- −3.3%
- 6 months
- −10.2%
- 1 year
- +7.9%
The full NGG chart adds GekkoIndex, insider, options, Congress and hedge fund markers, plus TrendCandles™.Open NGG in Gekko
Follow National Grid through every session
Put NGG on a Gekko watchlist and see its GekkoIndex, Gekko Fair Value and smart money signals update on the chart as they change.
Track NGG in GekkoFree for 7 days. No credit card required.
About National Grid
National Grid moves electricity and gas from where it is produced to where it is used, running the high-voltage power lines and gas networks that keep homes and businesses supplied. It is best known for operating the backbone of Britain's electricity transmission system, alongside distribution and transmission activities in parts of the northeastern United States.
The company is organised into several segments. Its UK arms handle electricity transmission across England and Wales and electricity distribution across the Midlands, the Southwest of England, and South Wales. In the United States, its New England and New York segments cover electricity and gas distribution together with high-voltage transmission. A further segment, National Grid Ventures, runs electricity interconnectors and liquefied natural gas importing at the Isle of Grain, while a separate segment covers commercial property leasing and sales and insurance work in the United Kingdom.
National Grid was founded in 1990 and is headquartered in London, in the United Kingdom. Its shares trade under the ticker NGG.
- Sector
- Utilities
- Website
- nationalgrid.com
National Grid GekkoIndex: the smart money zone
National Grid’s GekkoIndex — Gekko’s 0 to 100 smart money score — reads 61.3, in the Accumulation zone, down 7.8 points over five sessions.
61.3Accumulation
Down 7.8 points over five sessions.
Reading for Sep 18, 2026
What followed past readings in each zone
| Zone | Readings | 5 days | 20 days | ||
|---|---|---|---|---|---|
| Buying | 25 | +1.3% | +0.9% | ||
| Accumulation (current zone) | 188 | +0.4% | +1.4% | ||
| Neutral | 361 | 0.0% | +0.9% | ||
| Distribution | 41 | −0.3% | −3.0% | ||
| Selling | 0 | Not available | |||
Average NGG share-price change over the trading days after each daily reading in its GekkoIndex history. Across every stock Gekko tracks, Accumulation readings averaged +2.3% over 20 days. Past behaviour doesn’t guarantee future results.
Accumulation zone: Institutional interest building. About the five zones →
See every daily GekkoIndex reading plotted over the NGG price, zone by zone.Track NGG in Gekko
Is National Grid stock overvalued? Gekko Fair Value
National Grid trades 9.1% below Gekko Fair Value of $84.53, so the shares are undervalued on Gekko’s estimate.
Gekko’s own estimate of what National Grid shares are worth, recalculated every trading day.
$84.53
Gekko Fair Value, Sep 19, 2026
9.1% Undervalued
Gekko Fair Value on every chart, with the gap to price updating daily.Open NGG in Gekko
National Grid insider and Congress trading
No open-market insider purchases were filed for National Grid, and no Congress trades were disclosed, in the last 90 days.
Plus buybacks, unusual options and fund positions, each dated to when it became public.
Congress trades last 90 days
No trades in NGG were disclosed by members of Congress in the last 90 days.
From congressional disclosures, which report amounts as ranges.
Congress disclosures for NGG, plotted on the chart in Gekko.Open NGG in Gekko
National Grid earnings: next date and track record
National Grid reports on Nov 5, 2026, before the open (46 days away), and beat the EPS estimate in 2 of its last 8 reports.
Next earnings report
Nov 5, 2026
Expected before the open, 46 days away
- EPS estimate
- $2.32
- Revenue estimate
- $10.28B
2 of 8reports beat the EPS estimate
±3.8%average move across the report
4 of 8reports followed by a gain
Share-price move across each report
| Reported | EPS | Revenue | Move |
|---|---|---|---|
| Feb 25, 2026 | $0.00 est $0.00 | — | +1.5% |
| Nov 6, 2025 | $0.00 est $0.00 | $7.60B est $11.22B | +3.2% |
| Sep 3, 2025 | $0.00 est $0.00 | — | +1.4% |
| May 15, 2025 | $0.46 est $0.00 | $14.08B est $16.34B | +5.7% |
| Feb 26, 2025 | $0.13 est $0.00 | — | −2.0% |
| Nov 7, 2024 | $0.00 est $0.00 | $10.53B est $11.68B | −0.3% |
| Aug 28, 2024 | $0.00 est $0.00 | — | −0.5% |
| May 23, 2024 | $0.00 est $0.00 | $14.40B est $14.07B | −15.7% |
“Move” is the close of the first session after the report compared with the close of the last session before it, so it reads the same whether the company reported before the open or after the close.
National Grid stock forecast and analyst price targets
Analysts’ average 12-month price target for National Grid is $91.19, +18.7% from the last close, from 1 firm rating the stock in the last 90 days.
$91.19consensus 12-month target, +18.7% from the last close
Each firm’s latest rating in the last 90 days: 1 firm.
Latest analyst actions
| Date | Firm | Target | vs price |
|---|---|---|---|
| Sep 8 | Berenberg Bank | $90.30 | +17.6% |
+1.4%average 20-day move after past Accumulation readings
−3.5%average move over the next 20 trading days in the last 5 years
±1.6%typical daily move, from the 14-day average range
Gekko doesn’t publish price predictions. These are analyst targets and historical base rates, which don’t guarantee future results.
National Grid seasonality: the next 20 trading days
Over the next 20 trading days from Sep 19, National Grid averaged −3.5% across the last 5 years, rising in 1 of them.
Next 20 trading days, by year
Average move and hit rate
| Window | Average | Years higher |
|---|---|---|
| Next 5 trading days | −3.3% | 2 of 5 |
| Next 10 trading days | −4.7% | 1 of 5 |
| Next 15 trading days | −6.0% | 1 of 5 |
| Next 20 trading days | −3.5% | 1 of 5 |
| Next 30 trading days | −2.9% | 1 of 5 |
For scale, NGG’s typical 20-trading-day move in either direction is about 4%.
National Grid market cap and key statistics
National Grid’s market cap is $77.21B, with a P/E ratio of 17.2 and revenue of $17.69B over the last twelve months.
Valuation
- Market cap
- $77.21B
- P/E ratio
- 17.2
- Forward P/E
- 12.7
- EPS, TTM
- $4.52
- Gekko Fair Value
- $84.53
Trading
- Volume
- 768,356
- Avg volume, 20 days
- 818,173
- 52-week high
- $94.64
- 52-week low
- $69.99
- Shares outstanding
- 1.01B
Financials
- Revenue, TTM
- $17.69B
- Profit margin
- 18.3%
- Return on equity
- 8.4%
- Quarterly earnings growth, YoY
- +14.4%
Risk and income
- Beta
- 0.59
- Typical daily move
- ±1.6%
- Typical 20-day move
- ±4%
- Dividend yield
- 4.26%
National Grid stock news this week
Coverage of National Grid this week reads positive: 5 positive, 0 neutral and 0 negative headlines.
- National Grid Partners Invests in Terragrit, Terragrit Saysmarketscreener.com, Sep 17
- Terragrit Secures Strategic Investment from National Grid Partners to Advance Operational Decision-Making Across Energy and UtilitiesPRNewsWire, Sep 17
- National Grid advances Wednesday, outperforms marketMarketWatch, Sep 16
- National Grid Transco, PLC (NYSE:NGG) Receives $85.50 Average Price Target from AnalystsDefense World, Sep 16
- After Plunging 7.8% in 4 Weeks, Here's Why the Trend Might Reverse for National Grid (NGG)Yahoo Finance, Sep 15
- Bernstein resumes coverage on National Grid on regulated growth outlookInvesting.com, Sep 15
National Grid stock FAQ
What is National Grid’s market cap?
National Grid’s market cap is $77.21B at the Sep 18, 2026 close of $76.80, with 1.01B shares outstanding. The shares trade on a P/E ratio of 17.2.
What is the National Grid stock forecast?
The consensus analyst 12-month price target for National Grid is $91.19, +18.7% from the last close. Of the 1 firm that rated the stock in the last 90 days, 0 rate it a buy, 1 a hold and 0 a sell. Gekko doesn’t publish price predictions of its own.
Is National Grid stock overvalued or undervalued?
On Gekko’s estimate National Grid is undervalued: the Sep 18, 2026 close of $76.80 is 9.1% below Gekko Fair Value of $84.53. Gekko Fair Value is recalculated every trading day, and a gap inside 5% either way counts as about fair value.
When does National Grid report earnings next?
National Grid is expected to report on Nov 5, 2026, before the market opens (46 days away). Analysts expect earnings of $2.32 per share on revenue of $10.28B. National Grid beat the earnings estimate in 2 of its last 8 reports, moving 3.8% on average across the report.
What is National Grid’s 52-week high and low?
National Grid’s 52-week high is $94.64 and its 52-week low is $69.99; it closed at $76.80 on Sep 18, 2026, +7.9% over the past year.
Is National Grid stock a buy right now?
Gekko describes the data; it does not make buy or sell recommendations. On the swing-trade checklist, 3 of the 5 items with data read as supportive (gekkoindex, fair value and earnings risk) and 2 as headwinds (trend and seasonality). The checklist is a description of current data, not a recommendation.
How this page works
Prices and signals update after every US market close; the GekkoIndex, Gekko Fair Value and the checklist are Gekko’s own, and the Gekko Brief is written by AI from this page’s data and checked against it before it is published. How Gekko’s data works →
See National Grid the way Gekko members do
Every GekkoIndex reading, insider trade, options bet and Congress disclosure plotted on the chart, plus the 5,800-name screener and trade planning tools.
Join 1,349 other traders using Gekko
Start Your FREE 7 Day Trial → Every feature unlocked. No credit card required.