National Grid Transco (NGG) Options Chain & Prices $71.57 +0.40 (+0.56%) Closing price 07/18/2025 03:59 PM EasternExtended Trading$71.56 0.00 (-0.01%) As of 07/18/2025 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 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 9/19/2025 8/15/2025 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 VolatilityDeltaTrades8/15/2025$65.00$0.132Put1 - 146(+40)24.07% (+0.21%)-0.06348518/15/2025$70.00$0.717Put5 - - 117(+0)18.56% (+0.10%)-0.30243118/15/2025$75.00$3.573Put1 - 14(+1)17.06% (-0.68%)-0.84630418/15/2025$75.00$0.347Call53244(+14)17.06% (-0.68%)0.1919364End-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 7/19/2025 by MarketBeat.com Staff From Our PartnersThis Signal Only Flashes Once Every 4 Years – And It Just TriggeredThis same signal has appeared twice before in the past 8 years — both times, it kicked off major moves in cryp...Crypto Swap Profits | SponsoredGoogle did what!?!?A new technology has sparked a modern-day gold rush in Silicon Valley. OpenAI’s Sam Altman invested $375M. 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