Quantum (QMCO) Stock Chart & Stock Price History $15.39 +0.38 (+2.53%) Closing price 04:00 PM EasternExtended Trading$15.38 -0.02 (-0.10%) As of 07:58 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 ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Quantum Stock Price Performance 5 Day Performance-7.95%1 Month Performance+28.79%3 Month Performance-78.22%6 Month Performance+351.32%Year-To-Date Performance-71.46%1 Year Performance+39.91% Receive QMCO Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Quantum and its competitors with MarketBeat's FREE daily newsletter. Email Address QMCO Stock Chart for Thursday, March, 27, 2025 QMCO Chart by TradingViewRemove Ads Quantum Stock Price History Daily Weekly Monthly Time Frame Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year Time Frame * Start Date * End Date Export to Excel DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization03/26/2025$16.22$15.01-7.46%$17.07$14.691.19 million shs$87.57 million03/25/2025$17.22$16.22-5.81%$17.64$15.92909,301 shs$94.63 million03/24/2025$16.72$17.22+2.99%$18.45$17.001.60 million shs$100.46 million03/21/2025$16.45$16.72+1.64%$18.60$15.752.63 million shs$97.54 million03/20/2025$19.63$16.45-16.20%$19.50$15.552.13 million shs$95.97 million03/19/2025$19.80$19.63-0.86%$22.84$18.803.20 million shs$114.52 million03/18/2025$21.49$19.80-7.86%$24.40$17.566.85 million shs$115.51 million03/17/2025$15.34$21.49+40.09%$21.59$15.686.70 million shs$125.37 million03/14/2025$14.82$15.34+3.51%$18.66$14.986.33 million shs$89.49 million03/13/2025$11.26$14.82+31.62%$15.43$11.484.12 million shs$86.46 million Get the Latest News and Ratings for QMCO and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Quantum and its competitors with MarketBeat's FREE daily newsletter. 03/12/2025$10.23$11.26+10.07%$11.62$10.40428,408 shs$65.69 million03/11/2025$10.79$10.23-5.19%$10.85$10.11240,912 shs$59.68 million03/10/2025$11.76$10.79-8.25%$11.60$10.33289,950 shs$62.95 million03/07/2025$11.40$11.76+3.16%$11.79$10.83240,297 shs$68.61 million03/06/2025$12.42$11.40-8.21%$12.49$11.25370,043 shs$66.51 million03/05/2025$11.51$12.42+7.91%$12.60$11.45482,440 shs$72.46 million03/04/2025$11.04$11.51+4.26%$11.83$10.50499,954 shs$67.15 million03/03/2025$11.79$11.04-6.36%$12.63$11.00459,966 shs$64.41 million02/28/2025$11.95$11.79-1.34%$12.10$11.21413,371 shs$68.78 million02/27/2025$13.61$11.95-12.20%$13.80$11.87561,542 shs$69.72 million02/26/2025$13.57$13.61+0.29%$14.33$13.38482,485 shs$79.40 million Related Companies DDD Stock Chart KOPN Stock Chart RDCM Stock Chart LTRX Stock Chart SILC Stock Chart INVE Stock Chart ALOT Stock Chart MKFG Stock Chart OSS Stock Chart ZEPP Stock Chart Receive QMCO Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Quantum and its competitors with MarketBeat's FREE daily newsletter. This page (NASDAQ:QMCO) was last updated on 3/27/2025 by MarketBeat.com Staff From Our PartnersA market crash is coming—here’s whenThe stock market cycle I've used to identify the most likely day of the next market crash is the exact same in...Chaikin Analytics | SponsoredYour Wealth is Under AttackPlease don't wait—this is your moment to take action. Download your Wealth Protection Guide now, claim your fr...American Alternative | SponsoredA brutally honest economic warning for 2025 (see proof)New York Times best-selling financial author and world-renowned economist Addison Wiggin (a man who’s worked s...Banyan Hill Publishing | Sponsored$2 Trillion Disappears Because of Fed's Secretive New Move$2 trillion has disappeared from the US government's books. The reason why is a new, secretive move being c...Stansberry Research | SponsoredHas Trump finally met his match?Dylan Jovine predicted the 2008 crash over a year before it happened. Folks who listened to him had the chance...Behind the Markets | SponsoredCollect $7k per month from Tesla’s SECRET dividendTesla doesn't pay a traditional dividend.... But I just discovered a secret backdoor to collect a secret 69...Investors Alley | SponsoredEx CIA predicts 40% “double crash” – April 11The scientists here don’t study deadly viruses… directed energy weapons… or even weather control technology… ...Paradigm Press | Sponsored“Amazon Coin” set to outperform BitcoinChris Rowe – the man who recommended Amazon in 1998… Bitcoin and Ethereum in 2017… And has spotted 44 diffe...True Market Insiders | Sponsored Adding Choose a watchlist: Watchlist Adding You have already added five stocks to your watchlist. Upgrade to MarketBeat All Access to add more stocks to your watchlist. Adding Quantum Co. Please log in to your account or sign up in order to add this asset to your watchlist. Share Quantum 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. Advanced Stock Screeners and Research Tools Use our seven stock screeners to find suitable stocks. Stay informed with MarketBeat's real-time news. Export data to Excel for personal analysis. Sign in to your free account to enjoy these benefits In-depth profiles and analysis for 20,000 public companies. Real-time analyst ratings, insider transactions, earnings data, and more. Our daily ratings and market update email newsletter. Sign in to your free account to enjoy all that MarketBeat has to offer. Sign In Create Account Your Email Address: Email Address Required Your Password: Password Required Log In or Sign in with Facebook Sign in with Google Forgot your password? Your Email Address: Please enter your email address. Please enter a valid email address Choose a Password: Please enter your password. Your password must be at least 8 characters long and contain at least 1 number, 1 letter, and 1 special character. Create My Account (Free) or Sign in with Facebook Sign in with Google By creating a free account, you agree to our terms of service. This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
