Knife River (KNF) Options Chain & Prices $71.42 -1.27 (-1.74%) As of 11:40 AM Eastern This is a fair market value price provided by Polygon.io. Learn more. Add Compare Share Share Options Chain Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock KNF Put and Call Options List 5/15/2026 2/20/2026 1/16/2026 11/21/2025 10/17/2025 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 VolatilityDeltaTrades10/17/2025$65.00$0.669Put1 - - 366(+0)57.29% (+4.43%)-0.152097110/17/2025$70.00$1.708Put11 - 1(+0)50.18% (+1.78%)-0.34186110/17/2025$75.00$4.092Put21 - 364(+0)46.44% (+0.32%)-0.627429210/17/2025$75.00$1.628Call2 - - 131(+0)46.44% (+0.32%)0.375946110/17/2025$80.00$0.508Call2 - - 132(+0)46.70% (+0.67%)0.1550971End-of-day options data provided by Trade Alert and Intrinio. 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