TransAlta (TAC) Options Chain & Prices $12.77 +0.01 (+0.08%) Closing price 05/11/2026 03:59 PM EasternExtended Trading$12.80 +0.03 (+0.24%) As of 07:09 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 Massive. Learn more. Add Compare Share Share Options Chain Stock AnalysisAnalyst ForecastsChartCompetitorsDividendEarningsFinancialsHeadlinesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock TAC Put and Call Options List 12/18/2026 11/20/2026 9/18/2026 8/21/2026 6/18/2026 5/15/2026 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 ExpiresStrike PriceClose PricePut/CallVolumeVolume AskVolume BidOpen InterestImplied VolatilityDeltaTrades5/15/2026$12.00$0.106Put55 - 470(+0)70.65% (+12.84%)-0.19706715/15/2026$12.00$0.859Call71563(-2)70.65% (+12.84%)0.80329935/15/2026$13.00$0.165Call5 - 11571(+4)50.23% (+5.73%)0.36936345/15/2026$14.00$0.030Call751980(+1)62.31% (+9.91%)0.08317265/15/2026$15.00$2.262Put1 - - 171(+0)79.24% (+14.63%)-0.97462915/15/2026$15.00$0.011Call1 - - 1140(+0)79.24% (+14.63%)0.0287791End-of-day options data provided by Trade Alert and Intrinio. Related Companies and Tools Related Companies Oklo Options Chain Essential Utilities Options Chain Enlight Renewable Energy Options Chain Brookfield Renewable Partners Options Chain Clearway Energy Options Chain Comp En De Mn Cemig ADS Options Chain Archrock Options Chain Ultrapar Participacoes Options Chain TXNM Energy Options Chain Enel Chile Options Chain Options Chain Tools Short Interest TrackerShort Interest IncreasesShort Interest DecreasesUnusual Call VolumeUnusual Put Volume This page (NYSE:TAC) was last updated on 5/12/2026 by MarketBeat.com Staff. 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