Prothena (PRTA) Options Chain & Prices $8.06 -0.10 (-1.23%) Closing price 09/17/2025 04:00 PM EasternExtended Trading$8.13 +0.07 (+0.87%) As of 07:16 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 ForecastsChartCompetitorsEarningsFDA EventsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock PRTA Put and Call Options List 1/21/2028 1/15/2027 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$0.004Put22 - 5948(-1)53.45% (-56.71%)-0.02967219/19/2025$7.50$0.585Call33 - 1808(-9)53.45% (-56.71%)0.9720481End-of-day options data provided by Trade Alert and Intrinio. Related Companies and Tools Related Companies Apogee Therapeutics Options Sarepta Therapeutics Options Aurinia Pharmaceuticals Options Vericel Options Phibro Animal Health Options Ardelyx Options Twist Bioscience Options Vera Therapeutics Options Edgewise Therapeutics Options Avadel Pharmaceuticals Options Options Chain Tools Short Interest TrackerShort Interest IncreasesShort Interest DecreasesUnusual Call VolumeUnusual Put Volume This page (NASDAQ:PRTA) was last updated on 9/18/2025 by MarketBeat.com Staff From Our PartnersREVEALED: Something Big Happening Behind White House Doorswhat I just learned about what’s unfolding in the White House is truly stunning… And you need to see it for...Paradigm Press | SponsoredTrump’s national nightmare is herePorter Stansberry and Jeff Brown say a new U.S. national emergency is already underway — and it could trigger ...Porter & Company | SponsoredWarren Buffett’s #1 AI Stock: Not Mag 7, And NOT on the NasdaqNew Amazon Crisis Could Tank U.S. Stock Market A new panic is halting AI projects at Amazon and could split...Altimetry | SponsoredCrypto Gets Official Government Backing—Here's the WinnerTrump Just Signed the GENIUS Act—One Coin is About to Explode We're at the BEGINNING of smart money really ...Crypto 101 Media | SponsoredTen Bucks, Five Minutes... 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