Protagonist Therapeutics (PTGX) Stock Chart & Stock Price History $45.66 -0.25 (-0.54%) Closing price 05/23/2025 04:00 PM EasternExtended Trading$44.86 -0.79 (-1.74%) As of 05/23/2025 04:09 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 InterestTrendsBuy This Stock Protagonist Therapeutics Stock Price Performance The Protagonist Therapeutics (PTGX) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 50.15%, with a year-to-date return of 18.29%. In the past month, the stock has increased 2.63%, reflecting recent market activity. As of the latest close, Protagonist Therapeutics traded at $45.66 with a market cap of $2.83 billion and volume of 486,198 shares. Five years ago, the stock traded at $15.84, representing a 188.26% increase over that period. At the time, it had a market cap of $434.57 million and a volume of 437,452 shares. Receive PTGX Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Protagonist Therapeutics and its competitors with MarketBeat's FREE daily newsletter. Email Address 5 Day Performance-2.04%1 Month Performance+2.63%3 Month Performance+30.12%Year-To-Date Performance+18.29%1 Year Performance+50.15%5 Year Performance+188.26% PTGX Stock Chart for Sunday, May, 25, 2025 PTGX Chart by TradingView Protagonist Therapeutics Stock Price History Daily Weekly Monthly Yearly Time Frame Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 3 Year 5 Year Time Frame * Start Date * End Date Export to Excel DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization05/23/2025$45.91$45.66-0.54%$45.99$45.14486,198 shs$2.83 billion05/22/2025$45.82$45.91+0.20%$46.03$45.18901,585 shs$2.85 billion05/21/2025$46.61$45.82-1.69%$46.80$45.05832,191 shs$2.84 billion05/20/2025$45.57$46.61+2.28%$46.63$44.72535,193 shs$2.89 billion05/19/2025$44.49$45.57+2.43%$45.58$44.04551,847 shs$2.82 billion05/16/2025$44.41$44.49+0.18%$45.20$44.11647,034 shs$2.76 billion05/15/2025$43.77$44.41+1.46%$44.76$43.47625,803 shs$2.75 billion05/14/2025$44.27$43.77-1.13%$45.26$43.20840,110 shs$2.71 billion05/13/2025$45.27$44.27-2.21%$45.23$43.27910,114 shs$2.74 billion05/12/2025$43.04$45.27+5.18%$45.83$43.751.00 million shs$2.80 billion Get the Latest News and Ratings for PTGX and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Protagonist Therapeutics and its competitors with MarketBeat's FREE daily newsletter. 05/09/2025$43.98$43.04-2.14%$45.43$42.85671,228 shs$2.67 billion05/08/2025$43.09$43.98+2.07%$44.37$41.601.10 million shs$2.72 billion05/07/2025$42.01$43.09+2.57%$43.20$41.291.36 million shs$2.67 billion05/06/2025$44.28$42.01-5.13%$44.23$41.74807,789 shs$2.60 billion05/05/2025$45.51$44.28-2.70%$45.53$44.20876,702 shs$2.74 billion05/02/2025$44.99$45.51+1.16%$46.12$44.82644,080 shs$2.79 billion05/01/2025$45.82$44.99-1.81%$45.63$43.49739,458 shs$2.76 billion04/30/2025$45.62$45.82+0.44%$46.02$44.22860,806 shs$2.81 billion04/29/2025$44.39$45.62+2.77%$46.00$43.691.25 million shs$2.80 billion04/28/2025$44.49$44.39-0.22%$45.50$44.08592,255 shs$2.72 billion04/25/2025$44.85$44.49-0.80%$44.84$43.62634,255 shs$2.73 billion04/24/2025$46.16$44.85-2.84%$46.06$44.27859,223 shs$2.75 billion Related Companies Viatris Stock Price Chart Moderna Stock Price Chart Ascendis Pharma A/S Stock Price Chart Qiagen Stock Price Chart Roivant Sciences Stock Price Chart Revolution Medicines Stock Price Chart Elanco Animal Health Stock Price Chart Blueprint Medicines Stock Price Chart BridgeBio Pharma Stock Price Chart Verona Pharma Stock Price Chart Receive PTGX Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Protagonist Therapeutics and its competitors with MarketBeat's FREE daily newsletter. 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