National Grid Transco (NGG) Options Chain & Prices $70.90 -0.84 (-1.16%) Closing price 08/28/2025 03:59 PM EasternExtended Trading$70.56 -0.33 (-0.47%) As of 04:53 AM 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 Options Chain Stock AnalysisAnalyst ForecastsChartCompetitorsDividendFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock NGG Put and Call Options List 12/18/2026 3/20/2026 2/20/2026 1/16/2026 12/19/2025 10/17/2025 9/19/2025 Options Date Put and Call Options Put Options Call Options Options Type All In The Money Out of The Money Moneyness With Volume Without Volume All Volume Strike Price Min Strike Price Max Export to Excel ExpiresStrike PriceClose PricePut/CallVolumeVolume AskVolume BidOpen InterestImplied VolatilityDeltaTrades9/19/2025$70.00$0.768Put98 - 266(+0)18.05% (-0.29%)-0.35641149/19/2025$70.00$1.903Call10 - - 846(+0)18.05% (-0.29%)0.65140319/19/2025$75.00$0.200Call824111498(+3)18.45% (+2.07%)0.1289737End-of-day options data provided by Trade Alert and Intrinio. Related Companies and Tools Related Companies Constellation Energy Options Data Enterprise Products Partners Options Data Vistra Options Data Energy Transfer Options Data American Electric Power Options Data TC Energy Options Data Exelon Options Data Xcel Energy Options Data Fortis Options Data Korea Electric Power Options Data Options Chain Tools Short Interest TrackerShort Interest IncreasesShort Interest DecreasesUnusual Call VolumeUnusual Put Volume This page (NYSE:NGG) was last updated on 8/29/2025 by MarketBeat.com Staff From Our PartnersMusk’s Project Colossus could mint millionairesI predict this single breakthrough could make Elon the world’s first trillionaire — and mint more new milliona...Brownstone Research | SponsoredINVESTOR ALERT: Tiny “$3 AI Wonder Stock” on the Verge of Blasting OffRight now, we’re witnessing a monumental shift in the world.Traders Agency | SponsoredBONUS GUIDE - Ben Stein Prepares For the Next Financial CrisisWith inflation high, debt soaring, and global tensions rising, a financial storm may be brewing. 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