TransAlta (TAC) Options Chain & Prices $12.66 +0.32 (+2.55%) Closing price 03:59 PM EasternExtended Trading$12.68 +0.02 (+0.16%) As of 05:54 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 ForecastsChartCompetitorsDividendEarningsFinancialsHeadlinesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock TAC Put and Call Options List 3/20/2026 1/16/2026 12/19/2025 11/21/2025 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$13.00$0.188Call8922227811(+98)40.33% (+0.17%)0.35788414End-of-day options data provided by Trade Alert and Intrinio. Related Companies and Tools Related Companies Western Midstream Partners Options Chain Essential Utilities Options Chain Oklo Options Chain Brookfield Renewable Partners Options Chain TXNM Energy Options Chain Comp En De Mn Cemig ADS Options Chain Clearway Energy Options Chain Companhia Paranaense de Energia (COPEL) Options Chain Brookfield Infrastructure Options Chain Brookfield Renewable Options Chain Options Chain Tools Short Interest TrackerShort Interest IncreasesShort Interest DecreasesUnusual Call VolumeUnusual Put Volume This page (NYSE:TAC) was last updated on 9/10/2025 by MarketBeat.com Staff From Our PartnersGENIUS Act: The Plot to Seize Your Cash?A new law called the GENIUS Act could quietly trigger the most radical shift in American finance in decades. 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