Prothena (PRTA) Options Chain & Prices $8.20 -0.04 (-0.49%) Closing price 08/29/2025 04:00 PM EasternExtended Trading$8.16 -0.04 (-0.43%) As of 08/29/2025 04:43 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 ForecastsChartCompetitorsEarningsFDA EventsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock PRTA Put and Call Options List 3/20/2026 1/16/2026 12/19/2025 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$7.50$0.135Put4010 - 6496(-218)53.56% (-0.26%)-0.21288549/19/2025$7.50$0.884Call11371978(-256)53.56% (-0.24%)0.7911517End-of-day options data provided by Trade Alert and Intrinio. Related Companies and Tools Related Companies Dyne Therapeutics Options Apogee Therapeutics Options Twist Bioscience Options Travere Therapeutics Options Biohaven Options Immunocore Options Aurinia Pharmaceuticals Options WAVE Life Sciences Options Janux Therapeutics Options Edgewise Therapeutics Options Options Chain Tools Short Interest TrackerShort Interest IncreasesShort Interest DecreasesUnusual Call VolumeUnusual Put Volume This page (NASDAQ:PRTA) was last updated on 8/30/2025 by MarketBeat.com Staff From Our PartnersBuffett, Gates and Bezos Quietly Dumping Stocks—Here's WhyImagine a bull market so powerful, every single investor became a millionaire. Not by finding the next NVIDIA ...Banyan Hill Publishing | SponsoredINVESTOR ALERT: Tiny “$3 AI Wonder Stock” on the Verge of Blasting OffRight now, we’re witnessing a monumental shift in the world.Traders Agency | SponsoredEveryone’s watching Nvidia right now. 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