Siga Technologies (SIGA) Stock Chart & Stock Price History $8.19 -0.07 (-0.85%) Closing price 04:00 PM EasternExtended Trading$8.20 +0.01 (+0.06%) As of 04:44 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 ForecastsChartCompetitorsDividendEarningsFinancialsHeadlinesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Siga Technologies Stock Price Performance The Siga Technologies (SIGA) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 21.33%, with a year-to-date return of 36.27%. In the past month, the stock has decreased 8.18%, reflecting recent market activity. As of the latest close, Siga Technologies traded at $8.26 with a market cap of $588.60 million and volume of 291,383 shares. Five years ago, the stock traded at $6.75, representing a 21.33% increase over that period. At the time, it had a market cap of $527.32 million and a volume of 374,311 shares. Receive SIGA Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Siga Technologies and its competitors with MarketBeat's FREE daily newsletter. Subscribe Now View SMS TermsBy entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. Message and data rates may apply. Message frequency will vary. Messages will consist of stock alerts, news stories, and partner advertisements/offers. Consent is not a condition of the purchase of any goods or services. Text HELP for help/customer support. 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Read our full terms of service and privacy policy. 5 Day Performance-2.96%1 Month Performance-8.18%3 Month Performance+19.39%Year-To-Date Performance+36.27%1 Year Performance+21.33%5 Year Performance+21.33% SIGA Stock Chart for Tuesday, October, 14, 2025 SIGA Chart by TradingView Siga Technologies 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 Capitalization10/13/2025$8.22$8.26+0.49%$8.44$8.20291,383 shs$588.60 million10/10/2025$8.44$8.22-2.61%$8.47$8.20292,852 shs$588.60 million10/09/2025$8.28$8.44+1.93%$8.46$8.28240,123 shs$604.39 million10/08/2025$8.44$8.28-1.90%$8.54$8.25303,418 shs$592.93 million10/07/2025$8.23$8.44+2.55%$8.56$8.15517,129 shs$604.36 million10/06/2025$8.95$8.23-8.04%$8.95$8.21645,125 shs$589.35 million10/03/2025$8.95$8.95$9.17$8.90422,020 shs$640.91 million10/02/2025$9.23$8.95-3.03%$9.25$8.90456,307 shs$640.91 million10/01/2025$9.15$9.23+0.87%$9.29$8.90592,386 shs$660.92 million09/30/2025$8.96$9.15+2.12%$9.18$8.96472,152 shs$655.23 million Get the Latest News and Ratings for SIGA and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Siga Technologies and its competitors with MarketBeat's FREE daily newsletter. 09/29/2025$9.16$8.96-2.18%$9.22$8.92418,414 shs$641.63 million09/26/2025$8.78$9.16+4.33%$9.17$8.84516,423 shs$655.95 million09/25/2025$8.91$8.78-1.46%$8.92$8.72253,106 shs$628.70 million09/24/2025$9.06$8.91-1.66%$9.20$8.86427,186 shs$638.05 million09/23/2025$9.37$9.06-3.31%$9.45$9.02464,083 shs$648.79 million09/22/2025$8.78$9.37+6.72%$9.38$8.82548,574 shs$670.95 million09/19/2025$8.87$8.78-1.01%$9.00$8.78828,222 shs$628.70 million09/18/2025$8.66$8.87+2.42%$8.87$8.64264,158 shs$635.18 million09/17/2025$8.99$8.66-3.67%$9.03$8.56436,057 shs$620.14 million09/16/2025$9.00$8.99-0.11%$9.13$8.93617,555 shs$643.74 million09/15/2025$8.92$9.00+0.90%$9.16$8.87542,351 shs$644.49 million Related Companies Catalyst Pharmaceuticals Stock Price Chart Mineralys Therapeutics Stock Price Chart Alvotech Stock Price Chart Bausch Health Cos Stock Price Chart IDEAYA Biosciences Stock Price Chart Belite Bio Stock Price Chart ImmunityBio Stock Price Chart Arcutis Biotherapeutics Stock Price Chart Recursion Pharmaceuticals Stock Price Chart Mesoblast Stock Price Chart Receive SIGA Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Siga Technologies and its competitors with MarketBeat's FREE daily newsletter. 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In short: I believe we are...Timothy Sykes | Sponsored Adding Choose a watchlist: Watchlist Adding You have already added ten stocks to your watchlist. Upgrade to MarketBeat All Access to add more stocks to your watchlist. Adding Siga Technologies Inc. Please log in to your account or sign up in order to add this asset to your watchlist. Share Siga Technologies With A Colleague Link copied to clipboard. Get 30 Days of MarketBeat All Access for Free Sign up for MarketBeat All Access to gain access to MarketBeat's full suite of research tools. Start Your 30-Day Trial MarketBeat All Access Features Best-in-Class Portfolio Monitoring Get personalized stock ideas. Compare portfolio to indices. Check stock news, ratings, SEC filings, and more. Stock Ideas and Recommendations See daily stock ideas from top analysts. Receive short-term trading ideas from MarketBeat. Identify trending stocks on social media. 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