National Grid Transco (NGG) Stock Chart & Stock Price History $71.00 -0.65 (-0.91%) Closing price 06/18/2025 03:59 PM EasternExtended Trading$71.02 +0.02 (+0.03%) As of 06/18/2025 06:21 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsDividendFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock National Grid Transco Stock Price Performance The National Grid Transco (NGG) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 25.55%, with a year-to-date return of 19.49%. In the past month, the stock has decreased 1.95%, reflecting recent market activity. As of the latest close, National Grid Transco traded at $71.00 with a market cap of $69.47 billion and volume of 1.27 million shares. Five years ago, the stock traded at $59.75, representing a 18.83% increase over that period. At the time, it had a market cap of $43.93 billion and a volume of 535,359 shares. Receive NGG Stock News and Ratings via EmailSign-up to receive the latest news and ratings for National Grid Transco and its competitors with MarketBeat's FREE daily newsletter. Email Address 5 Day Performance-2.26%1 Month Performance-1.95%3 Month Performance+11.28%Year-To-Date Performance+19.49%1 Year Performance+25.55%5 Year Performance+18.83% NGG Stock Chart for Thursday, June, 19, 2025 NGG Chart by TradingView National Grid Transco Stock Price History Daily Weekly Monthly Yearly Time Frame Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 3 Year 5 Year Time Frame Start Date End Date Export to Excel DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization06/18/2025$71.64$71.00-0.90%$71.46$70.951.27 million shs$69.47 billion06/17/2025$71.43$71.64+0.30%$71.73$71.211.53 million shs$70.10 billion06/16/2025$72.64$71.43-1.67%$72.76$71.301.13 million shs$69.89 billion06/13/2025$72.86$72.64-0.30%$73.03$72.47670,075 shs$71.08 billion06/12/2025$71.43$72.86+2.00%$72.97$72.23652,404 shs$71.29 billion06/11/2025$71.16$71.43+0.38%$71.75$71.23923,656 shs$69.89 billion06/10/2025$71.10$71.16+0.09%$71.37$70.97656,752 shs$69.63 billion06/09/2025$70.74$71.10+0.51%$71.35$70.191.58 million shs$69.57 billion06/06/2025$70.95$70.74-0.30%$71.09$70.62536,940 shs$69.21 billion06/05/2025$71.07$70.95-0.16%$71.28$70.87755,542 shs$69.42 billion Get the Latest News and Ratings for NGG and Related StocksEnter your email address below to receive the latest news and analysts' ratings for National Grid Transco and its competitors with MarketBeat's FREE daily newsletter. 06/04/2025$71.33$71.07-0.37%$71.70$71.011.84 million shs$69.54 billion06/03/2025$71.99$71.33-0.91%$71.69$71.141.02 million shs$69.80 billion06/02/2025$71.40$71.99+0.82%$72.17$70.991.68 million shs$70.44 billion05/30/2025$72.56$71.40-1.60%$71.56$70.80785,260 shs$69.86 billion05/29/2025$72.74$72.56-0.25%$72.86$72.131.28 million shs$71.00 billion05/28/2025$74.65$72.74-2.56%$73.10$72.421.09 million shs$71.17 billion05/27/2025$74.78$74.65-0.17%$74.70$73.732.44 million shs$73.04 billion05/26/2025$74.78$74.78$74.81$73.21947,106 shs$73.17 billion05/23/2025$73.60$74.78+1.60%$74.81$73.21947,106 shs$73.17 billion05/22/2025$73.57$73.60+0.04%$73.80$72.371.01 million shs$72.01 billion05/21/2025$73.39$73.57+0.25%$73.96$73.321.02 million shs$71.98 billion05/20/2025$72.41$73.39+1.35%$73.46$72.49746,662 shs$71.81 billion05/19/2025$71.32$72.41+1.53%$72.46$70.741.29 million shs$70.85 billion Related Companies CEG Stock Price Chart EPD Stock Price Chart ET Stock Price Chart VST Stock Price Chart AEP Stock Price Chart TRP Stock Price Chart EXC Stock Price Chart XEL Stock Price Chart VG Stock Price Chart CQP Stock Price Chart Receive NGG Stock News and Ratings via EmailSign-up to receive the latest news and ratings for National Grid Transco and its competitors with MarketBeat's FREE daily newsletter. 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