Sionna Therapeutics (SION) Stock Chart & Stock Price History $16.98 -0.55 (-3.14%) As of 08/6/2025 04:00 PM Eastern Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFDA EventsHeadlinesInsider TradesOwnershipSEC FilingsTrendsBuy 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 decreased 18.99%, reflecting recent market activity. As of the latest close, Sionna Therapeutics traded at $16.98 with a market cap of $749.16 million and volume of 152,725 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. Email Address 5 Day Performance+0.35%1 Month Performance-18.99%3 Month Performance+30.62% SION Stock Chart for Thursday, August, 7, 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 Capitalization08/06/2025$17.53$16.98-3.14%$18.15$16.48152,725 shs$749.16 million08/05/2025$17.12$17.53+2.39%$18.22$16.82107,682 shs$773.42 million08/04/2025$16.92$17.12+1.18%$17.28$16.5079,593 shs$755.40 million08/01/2025$16.76$16.92+0.95%$17.23$16.38118,284 shs$746.51 million07/31/2025$17.75$16.76-5.58%$18.65$16.5089,893 shs$739.52 million07/30/2025$18.33$17.75-3.16%$19.58$17.66158,766 shs$783.13 million07/29/2025$19.85$18.33-7.66%$20.55$18.1042,859 shs$808.72 million07/28/2025$19.10$19.85+3.93%$20.15$18.55140,481 shs$875.86 million07/25/2025$19.14$19.10-0.21%$19.53$18.2170,231 shs$842.77 million07/24/2025$19.77$19.14-3.19%$20.06$17.2493,215 shs$844.46 million 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. 07/23/2025$19.02$19.77+3.94%$19.82$18.36155,872 shs$872.25 million07/22/2025$17.44$19.02+9.06%$19.24$17.59116,952 shs$839.24 million07/21/2025$16.74$17.44+4.18%$17.45$16.46102,397 shs$769.45 million07/18/2025$18.33$16.74-8.67%$19.20$16.59395,731 shs$738.57 million07/17/2025$18.49$18.33-0.87%$20.19$18.08170,319 shs$808.72 million07/16/2025$18.53$18.49-0.22%$19.14$18.00273,278 shs$815.85 million07/15/2025$19.94$18.53-7.07%$20.16$18.4598,371 shs$817.54 million07/14/2025$20.43$19.94-2.40%$20.99$19.54122,631 shs$879.75 million07/11/2025$20.94$20.43-2.44%$20.87$20.1251,638 shs$901.37 million07/10/2025$20.93$20.94+0.05%$21.14$19.9581,041 shs$923.96 million07/09/2025$21.57$20.93-2.97%$21.87$20.78169,229 shs$923.43 million07/08/2025$20.96$21.57+2.91%$21.72$20.86148,734 shs$951.67 million07/07/2025$21.19$20.96-1.09%$21.26$20.28201,764 shs$924.76 million Related Companies MOR Stock Price Chart KYMR Stock Price Chart APLS Stock Price Chart IMVT Stock Price Chart ALVO Stock Price Chart CRNX Stock Price Chart CPRX Stock Price Chart RARE Stock Price Chart GMTX Stock Price Chart MIRM 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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