Quantum Biopharma (QNTM) Stock Chart & Stock Price History $14.06 -0.23 (-1.61%) Closing price 09/5/2025 04:00 PM EasternExtended Trading$14.13 +0.07 (+0.50%) As of 09/5/2025 07:59 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 EventsHeadlinesOwnershipSEC FilingsTrendsBuy This Stock Quantum Biopharma Stock Price Performance The Quantum Biopharma (QNTM) stock chart highlights key performance trends across multiple timeframes. Since the beginning of the year, the stock increased 282.07%. In the past month, the stock has decreased 45.94%, reflecting recent market activity. As of the latest close, Quantum Biopharma traded at $14.06 with a market cap of $53.71 million and volume of 117,584 shares. 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Read our full terms of service and privacy policy. 5 Day Performance-13.80%1 Month Performance-45.94%3 Month Performance-9.00%Year-To-Date Performance+282.07% QNTM Stock Chart for Sunday, September, 7, 2025 QNTM Chart by TradingView Quantum Biopharma 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 Capitalization09/05/2025$14.29$14.06-1.61%$14.64$13.70117,584 shs$53.71 million09/04/2025$15.70$14.29-8.98%$15.69$14.07120,304 shs$54.59 million09/03/2025$16.31$15.70-3.74%$16.86$15.51162,355 shs$59.97 million09/02/2025$16.85$16.31-3.20%$17.65$16.2198,225 shs$62.24 million09/01/2025$16.85$16.85$17.50$16.4855,222 shs$64.37 million08/29/2025$17.25$16.85-2.32%$17.50$16.4855,222 shs$65.38 million08/28/2025$16.75$17.25+2.99%$18.08$16.5690,001 shs$66.93 million08/27/2025$16.35$16.75+2.45%$18.13$16.0097,729 shs$64.97 million08/26/2025$17.70$16.35-7.63%$17.92$16.25104,761 shs$63.44 million08/25/2025$18.08$17.70-2.10%$18.45$17.4870,014 shs$68.68 million Get the Latest News and Ratings for QNTM and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Quantum Biopharma and its competitors with MarketBeat's FREE daily newsletter. 08/22/2025$18.05$18.08+0.17%$18.84$17.5076,613 shs$52.61 million08/21/2025$18.14$18.05-0.50%$19.48$17.8587,119 shs$52.49 million08/20/2025$18.03$18.14+0.61%$18.86$17.50100,291 shs$52.79 million08/19/2025$20.61$18.03-12.52%$20.94$17.80228,867 shs$52.47 million08/18/2025$22.45$20.61-8.20%$22.47$20.4394,653 shs$59.98 million08/15/2025$22.35$22.45+0.45%$22.57$21.01121,269 shs$65.33 million08/14/2025$23.25$22.35-3.87%$23.66$21.73123,352 shs$64.99 million08/13/2025$24.33$23.25-4.44%$25.30$22.75238,028 shs$67.66 million08/12/2025$26.26$24.33-7.35%$27.00$21.75451,018 shs$70.80 million08/11/2025$29.21$26.26-10.10%$31.91$25.30371,407 shs$76.36 million08/08/2025$26.01$29.21+12.30%$29.25$26.94215,475 shs$84.94 million08/07/2025$26.14$26.01-0.50%$30.75$25.24342,296 shs$75.69 million08/06/2025$24.57$26.14+6.39%$26.50$24.37121,678 shs$76.07 million Related Companies Contineum Therapeutics Stock Price Chart Vor Biopharma Stock Price Chart DBV Technologies Stock Price Chart Mereo BioPharma Group Stock Price Chart Jade Biosciences Stock Price Chart Lexeo Therapeutics Stock Price Chart Puma Biotechnology Stock Price Chart Allogene Therapeutics Stock Price Chart Tvardi Therapeutics Stock Price Chart Galectin Therapeutics Stock Price Chart Receive QNTM Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Quantum Biopharma and its competitors with MarketBeat's FREE daily newsletter. 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