Prothena (PRTA) Stock Chart & Stock Price History $13.18 -0.09 (-0.68%) Closing price 04:00 PM EasternExtended Trading$13.18 0.00 (0.00%) As of 04:45 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 Chart Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrends Prothena Stock Price Performance 5 Day Performance+1.69%1 Month Performance+5.23%3 Month Performance-22.49%6 Month Performance-45.01%Year-To-Date Performance-4.19%1 Year Performance-59.93% Receive PRTA Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Prothena and its competitors with MarketBeat's FREE daily newsletter. Email Address PRTA Stock Chart for Thursday, January, 16, 2025 PRTA Chart by TradingView Prothena Stock Price History Daily Weekly Monthly Time Frame Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year Time Frame * Start Date * End Date Export to Excel DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization01/15/2025$12.67$13.27+4.74%$13.64$12.89332,789 shs$714.05 million01/14/2025$13.13$12.67-3.50%$13.41$12.41616,804 shs$681.76 million01/13/2025$13.05$13.13+0.61%$13.30$12.39390,259 shs$706.51 million01/10/2025$14.16$13.05-7.84%$13.91$12.84521,545 shs$702.21 million01/09/2025$14.16$14.16$14.25$13.58308,898 shs$761.94 million01/08/2025$14.15$14.16+0.07%$14.25$13.58308,898 shs$761.94 million Get the Latest News and Ratings for PRTA and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Prothena and its competitors with MarketBeat's FREE daily newsletter. 01/07/2025$13.15$14.15+7.60%$14.47$12.97535,577 shs$761.40 million01/06/2025$13.87$13.15-5.19%$14.18$13.05655,841 shs$707.59 million01/03/2025$13.67$13.87+1.46%$14.05$13.65321,824 shs$746.33 million01/02/2025$13.85$13.67-1.30%$14.50$13.53529,998 shs$735.57 million01/01/2025$13.85$13.85$15.30$12.791.42 million shs$745.26 million12/31/2024$14.88$13.85-6.92%$15.30$12.791.42 million shs$745.26 million12/30/2024$15.14$14.88-1.72%$15.25$14.64415,453 shs$800.68 million12/27/2024$15.74$15.14-3.81%$15.80$14.80475,150 shs$814.67 million12/26/2024$15.40$15.74+2.21%$15.79$14.85336,786 shs$828.66 million12/25/2024$15.40$15.40$15.43$14.95246,140 shs$828.66 million12/24/2024$15.33$15.40+0.46%$15.43$14.95246,140 shs$828.66 million12/23/2024$15.22$15.33+0.72%$15.50$14.89567,893 shs$824.89 million12/20/2024$16.01$15.22-4.93%$16.42$15.101.56 million shs$818.97 million12/19/2024$11.95$16.01+33.97%$17.66$12.203.28 million shs$861.48 million12/18/2024$14.04$11.95-14.89%$14.22$11.70856,864 shs$643.02 million12/17/2024$12.61$14.04+11.34%$14.28$12.311.05 million shs$755.48 million12/16/2024$12.79$12.61-1.41%$13.13$12.44603,029 shs$678.53 million Related Companies Denali Therapeutics Stock Chart SpringWorks Therapeutics Stock Chart Merus Stock Chart Zai Lab Stock Chart Bausch Health Companies Stock Chart Catalyst Pharmaceuticals Stock Chart Recursion Pharmaceuticals Stock Chart Gemini Therapeutics Stock Chart Twist Bioscience Stock Chart HUTCHMED Stock Chart Receive PRTA Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Prothena and its competitors with MarketBeat's FREE daily newsletter. 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