Sionna Therapeutics (SION) Stock Chart & Stock Price History $23.23 +1.01 (+4.55%) As of 04:00 PM Eastern Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFDA EventsHeadlinesInsider TradesOwnershipSEC FilingsShort InterestTrendsBuy This Stock Sionna Therapeutics Stock Price Performance The Sionna Therapeutics (SION) stock chart highlights key performance trends across multiple timeframes. In the past month, the stock has increased 8.60%, reflecting recent market activity. As of the latest close, Sionna Therapeutics traded at $22.22 with a market cap of $980.79 million and volume of 252,730 shares. Receive SION Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Sionna Therapeutics and its competitors with MarketBeat's FREE daily newsletter. 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Read our full terms of service and privacy policy. 5 Day Performance+1.75%1 Month Performance+8.60%3 Month Performance+57.71% SION Stock Chart for Thursday, September, 18, 2025 SION Chart by TradingView Sionna 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 Capitalization09/17/2025$23.27$22.22-4.51%$24.77$22.00252,730 shs$980.79 million09/16/2025$22.31$23.27+4.30%$23.79$21.74169,047 shs$1.03 billion09/15/2025$22.83$22.31-2.28%$23.23$21.76102,572 shs$984.76 million09/12/2025$23.80$22.83-4.08%$24.31$22.56180,272 shs$1.01 billion09/11/2025$23.47$23.80+1.41%$24.47$23.31131,408 shs$1.05 billion09/10/2025$24.50$23.47-4.20%$26.47$23.05348,429 shs$1.04 billion09/09/2025$21.62$24.50+13.32%$26.09$20.60442,847 shs$1.08 billion09/08/2025$24.00$21.62-9.92%$24.99$21.53499,256 shs$954.31 million09/05/2025$23.06$24.00+4.08%$24.29$22.35323,084 shs$1.06 billion09/04/2025$24.55$23.06-6.07%$25.00$21.70249,245 shs$1.02 billion Get the Latest News and Ratings for SION and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Sionna Therapeutics and its competitors with MarketBeat's FREE daily newsletter. 09/03/2025$25.39$24.55-3.31%$26.48$24.30617,701 shs$1.08 billion09/02/2025$24.62$25.39+3.13%$25.46$23.16178,685 shs$1.12 billion09/01/2025$24.62$24.62$25.72$24.31103,269 shs$1.09 billion08/29/2025$25.72$24.62-4.28%$25.72$24.31103,269 shs$1.09 billion08/28/2025$25.13$25.72+2.35%$26.50$25.07171,112 shs$1.14 billion08/27/2025$25.22$25.13-0.36%$25.88$24.48174,627 shs$1.11 billion08/26/2025$24.06$25.22+4.82%$25.49$24.03156,461 shs$1.11 billion08/25/2025$24.39$24.06-1.35%$24.73$23.67135,440 shs$1.06 billion08/22/2025$23.74$24.39+2.74%$25.00$23.35184,624 shs$1.08 billion08/21/2025$22.77$23.74+4.26%$23.78$20.95152,268 shs$1.05 billion08/20/2025$21.48$22.77+6.01%$24.07$21.13430,065 shs$1.01 billion08/19/2025$21.39$21.48+0.42%$21.61$20.66152,686 shs$948.13 million08/18/2025$20.82$21.39+2.74%$21.99$20.50334,523 shs$944.16 million Related Companies KRYS Stock Price Chart ACAD Stock Price Chart ARWR Stock Price Chart MTSR Stock Price Chart ADMA Stock Price Chart MIRM Stock Price Chart LNTH Stock Price Chart PTGX Stock Price Chart AAPG Stock Price Chart ZLAB Stock Price Chart Receive SION Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Sionna Therapeutics and its competitors with MarketBeat's FREE daily newsletter. 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