Protagonist Therapeutics (PTGX) Stock Chart & Stock Price History $49.44 -0.12 (-0.24%) Closing price 04:00 PM EasternExtended Trading$49.46 +0.02 (+0.04%) As of 04:24 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 5 Day Performance-6.10%1 Month Performance+36.05%3 Month Performance+26.90%6 Month Performance+10.95%Year-To-Date Performance+28.08%1 Year Performance+73.60% 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 PTGX Stock Chart for Thursday, March, 27, 2025 PTGX Chart by TradingViewRemove Ads Protagonist Therapeutics 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 Capitalization03/26/2025$51.05$49.56-2.92%$51.40$49.40881,894 shs$3.04 billion03/25/2025$52.53$51.05-2.82%$53.58$50.72790,374 shs$3.13 billion03/24/2025$52.65$52.53-0.23%$53.70$51.611.52 million shs$3.22 billion03/21/2025$53.05$52.65-0.75%$53.23$51.063.70 million shs$3.23 billion03/20/2025$54.35$53.05-2.39%$54.11$52.47890,942 shs$3.26 billion03/19/2025$54.52$54.35-0.31%$54.54$52.431.05 million shs$3.34 billion03/18/2025$53.01$54.52+2.85%$54.55$51.84784,643 shs$3.35 billion03/17/2025$54.78$53.01-3.23%$54.25$52.261.28 million shs$3.25 billion03/14/2025$54.90$54.78-0.22%$55.39$53.531.27 million shs$3.36 billion03/13/2025$57.65$54.90-4.77%$58.70$54.791.40 million shs$3.37 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. 03/12/2025$59.76$57.65-3.53%$60.60$56.662.25 million shs$3.54 billion03/11/2025$55.95$59.76+6.81%$60.14$54.122.62 million shs$3.67 billion03/10/2025$38.35$55.95+45.89%$57.97$48.505.23 million shs$3.43 billion03/07/2025$39.05$38.35-1.79%$39.90$37.941.60 million shs$2.35 billion03/06/2025$38.45$39.05+1.56%$39.40$37.921.03 million shs$2.40 billion03/05/2025$38.66$38.45-0.54%$39.63$37.671.51 million shs$2.36 billion03/04/2025$38.50$38.66+0.42%$39.70$37.631.62 million shs$2.37 billion03/03/2025$37.59$38.50+2.42%$42.51$37.202.39 million shs$2.36 billion02/28/2025$36.34$37.59+3.44%$37.66$35.97720,436 shs$2.31 billion02/27/2025$36.15$36.34+0.53%$37.21$35.95998,964 shs$2.17 billion02/26/2025$35.09$36.15+3.02%$36.25$34.811.02 million shs$2.15 billion Related Companies Viatris Stock Price Chart Dr. Reddy's Laboratories Stock Price Chart Ascendis Pharma A/S Stock Price Chart Sarepta Therapeutics Stock Price Chart Vaxcyte Stock Price Chart Qiagen Stock Price Chart Roivant Sciences Stock Price Chart Revolution Medicines Stock Price Chart Lantheus Stock Price Chart Legend Biotech 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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