Kiniksa Pharmaceuticals International (KNSA) Stock Chart & Stock Price History $33.75 +0.17 (+0.51%) Closing price 08/22/2025 04:00 PM EasternExtended Trading$33.44 -0.31 (-0.92%) As of 08/22/2025 07:05 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 ForecastsChartCompetitorsEarningsFDA EventsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Kiniksa Pharmaceuticals International Stock Price Performance The Kiniksa Pharmaceuticals International (KNSA) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 23.27%, with a year-to-date return of 70.63%. In the past month, the stock has increased 24.45%, reflecting recent market activity. As of the latest close, Kiniksa Pharmaceuticals International traded at $33.75 with a market cap of $2.50 billion and volume of 356,168 shares. Five years ago, the stock traded at $17.64, representing a 91.33% increase over that period. At the time, it had a market cap of $1.18 billion and a volume of 303,599 shares. Receive KNSA Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Kiniksa Pharmaceuticals International and its competitors with MarketBeat's FREE daily newsletter. Email Address 5 Day Performance+0.09%1 Month Performance+24.45%3 Month Performance+25.51%Year-To-Date Performance+70.63%1 Year Performance+23.27%5 Year Performance+91.33% KNSA Stock Chart for Saturday, August, 23, 2025 KNSA Chart by TradingView Kiniksa Pharmaceuticals International 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 Capitalization08/22/2025$33.58$33.75+0.51%$34.24$33.53356,168 shs$2.50 billion08/21/2025$33.21$33.58+1.11%$33.68$32.90337,397 shs$2.49 billion08/20/2025$33.15$33.21+0.18%$33.49$32.92396,690 shs$2.46 billion08/19/2025$33.72$33.15-1.69%$33.97$33.06371,536 shs$2.46 billion08/18/2025$33.38$33.72+1.02%$34.55$33.41586,358 shs$2.50 billion08/15/2025$33.28$33.38+0.30%$33.81$32.96588,646 shs$2.47 billion08/14/2025$33.65$33.28-1.10%$33.50$32.82474,071 shs$2.47 billion08/13/2025$32.78$33.65+2.65%$33.66$32.69573,094 shs$2.49 billion08/12/2025$32.74$32.78+0.12%$33.00$32.06400,821 shs$2.43 billion08/11/2025$32.15$32.74+1.84%$32.87$32.00418,457 shs$2.43 billion Get the Latest News and Ratings for KNSA and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Kiniksa Pharmaceuticals International and its competitors with MarketBeat's FREE daily newsletter. 08/08/2025$33.11$32.15-2.90%$33.68$31.78675,329 shs$2.35 billion08/07/2025$32.72$33.11+1.19%$33.16$32.11606,877 shs$2.42 billion08/06/2025$33.07$32.72-1.06%$33.10$32.13656,035 shs$2.39 billion08/05/2025$32.95$33.07+0.36%$33.98$32.821.28 million shs$2.41 billion08/04/2025$31.98$32.95+3.03%$33.10$32.02848,345 shs$2.40 billion08/01/2025$30.26$31.98+5.68%$32.15$30.041.07 million shs$2.33 billion07/31/2025$30.06$30.26+0.67%$30.84$29.90617,580 shs$2.21 billion07/30/2025$30.37$30.06-1.02%$31.05$29.661.22 million shs$2.19 billion07/29/2025$27.04$30.37+12.32%$31.92$29.241.68 million shs$2.22 billion07/28/2025$26.33$27.04+2.70%$27.34$26.51669,914 shs$1.97 billion07/25/2025$26.90$26.33-2.12%$26.97$26.27623,373 shs$1.92 billion07/24/2025$27.12$26.90-0.81%$27.39$26.52405,658 shs$1.96 billion07/23/2025$27.64$27.12-1.88%$28.17$27.03380,462 shs$1.98 billion07/22/2025$28.42$27.64-2.74%$28.56$27.44456,499 shs$2.02 billion Related Companies Verona Pharma PLC American Depositary Share Stock Price Chart BridgeBio Pharma Stock Price Chart Blueprint Medicines Stock Price Chart Elanco Animal Health Stock Price Chart Roivant Sciences Stock Price Chart Grifols Stock Price Chart Legend Biotech Stock Price Chart Revolution Medicines Stock Price Chart Rhythm Pharmaceuticals Stock Price Chart Avidity Biosciences Stock Price Chart Receive KNSA Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Kiniksa Pharmaceuticals International and its competitors with MarketBeat's FREE daily newsletter. 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