TransAlta (TAC) Options Chain & Prices $12.92 -0.08 (-0.62%) Closing price 09/16/2025 03:59 PM EasternExtended Trading$13.03 +0.11 (+0.86%) As of 04:42 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 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$12.00$0.948Call70 - 702396(-5)62.38% (+5.79%)0.9056239/19/2025$13.00$0.203Call141137600(-3)51.61% (+6.05%)0.4544462End-of-day options data provided by Trade Alert and Intrinio. Related Companies and Tools Related Companies Western Midstream Partners Options Chain Oklo Options Chain Essential Utilities 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 Enel Chile 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 9/17/2025 by MarketBeat.com Staff From Our PartnersINVESTOR ALERT: Tiny “$3 AI Wonder Stock” on the Verge of Blasting OffRight now, we’re witnessing a monumental shift in the world.Traders Agency | SponsoredWhy Trump’s “Smart Dollar” could rewrite the rulesMUST SEE: Donald Trump's Radical Overhaul of the U.S. Dollar Congress just approved President Trump's lates...Stansberry Research | SponsoredTrump's Law S.1582: $21T Dollar Revolution ComingDo you have money in any of these banks? 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