Prothena (PRTA) Options Chain & Prices $6.26 -0.21 (-3.25%) Closing price 07/18/2025 04:00 PM EasternExtended Trading$6.64 +0.38 (+6.07%) As of 07/18/2025 07:33 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 9/19/2025 8/15/2025 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 VolatilityDeltaTrades8/15/2025$7.50$0.285Call37215508(+10)100.94% (+2.30%)0.29772910End-of-day options data provided by Trade Alert and Intrinio. Related Companies and Tools Related Companies Harrow Options Phibro Animal Health Options AbCellera Biologics Options Cogent Biosciences Options Intellia Therapeutics Options CureVac Options Aurinia Pharmaceuticals Options WAVE Life Sciences Options Calliditas Therapeutics AB (publ) Options Enliven Therapeutics Options Options Chain Tools Short Interest TrackerShort Interest IncreasesShort Interest DecreasesUnusual Call VolumeUnusual Put Volume This page (NASDAQ:PRTA) was last updated on 7/19/2025 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 | SponsoredThis Signal Only Flashes Once Every 4 Years – And It Just TriggeredThis same signal has appeared twice before in the past 8 years — both times, it kicked off major moves in cryp...Crypto Swap Profits | SponsoredGoogle did what!?!?A new technology has sparked a modern-day gold rush in Silicon Valley. 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