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Quantum (QMCO) Stock Chart & Stock Price History

Quantum logo
$8.80 -0.01 (-0.11%)
Closing price 04:00 PM Eastern
Extended Trading
$8.86 +0.06 (+0.68%)
As of 05:33 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 Massive. Learn more.

Quantum Stock Price Performance

The Quantum (QMCO) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has decreased 20.07%, with a year-to-date return of 36.43%. In the past month, the stock has increased 27.35%, reflecting recent market activity.

As of the latest close, Quantum traded at $8.81 with a market cap of $128.98 million and volume of 375,635 shares. Five years ago, the stock traded at a split-adjusted price of $174.40, representing a 94.95% decrease over that period. At the time, it had a market cap of $476.91 million and a volume of 11,986 shares.

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5 Day
Performance
-8.52%
1 Month
Performance
+27.35%
3 Month
Performance
+52.25%
Year-To-Date
Performance
+36.43%
1 Year
Performance
-20.07%
5 Year
Performance
-94.95%

QMCO Stock Chart for Thursday, May, 14, 2026

Quantum Stock Price History

DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization
05/13/2026$8.94$8.81
-1.45%
$9.08$8.57375,635 shs$128.98 million
05/12/2026$9.78$8.94
-8.59%
$9.83$8.49676,158 shs$130.86 million
05/11/2026$9.62$9.78
+1.66%
$10.26$9.17931,626 shs$143.18 million
05/08/2026$9.13$9.62
+5.37%
$9.86$8.85500,061 shs$133.65 million
05/07/2026$10.03$9.13
-9.01%
$9.72$8.76876,023 shs$133.66 million
05/06/2026$8.27$10.03
+21.33%
$10.64$9.002.26 million shs$146.90 million
05/05/2026N/A$8.27$8.30$7.41707,914 shs$121.07 million
04/30/2026$6.81$7.14
+4.85%
$7.25$6.75275,771 shs$104.52 million
04/29/2026$6.72$6.81
+1.34%
$6.88$6.47272,076 shs$99.69 million
04/28/2026$6.92$6.72
-2.89%
$6.87$6.58205,770 shs$98.38 million
04/27/2026$7.17$6.92
-3.49%
$7.17$6.70338,888 shs$101.31 million
04/24/2026$7.04$7.17
+1.85%
$7.66$7.15599,415 shs$104.97 million
04/23/2026$7.18$7.04
-1.95%
$7.18$6.88269,254 shs$103.05 million
04/22/2026$6.97$7.18
+3.01%
$7.45$7.10218,924 shs$105.12 million
04/21/2026$7.20$6.97
-3.19%
$7.35$6.93253,076 shs$102.04 million
04/20/2026$7.28$7.20
-1.10%
$7.25$7.02230,454 shs$105.41 million
04/17/2026$7.07$7.28
+2.97%
$7.51$7.00518,985 shs$106.57 million
04/16/2026$7.25$7.07
-2.48%
$7.31$6.66580,189 shs$103.51 million
04/15/2026$6.91$7.25
+4.92%
$7.46$6.91967,475 shs$106.14 million
04/14/2026$6.42$6.91
+7.63%
$7.12$6.351.19 million shs$101.15 million
04/13/2026$6.04$6.42
+6.29%
$6.47$5.85348,566 shs$93.99 million

This page (NASDAQ:QMCO) was last updated on 5/14/2026 by MarketBeat.com Staff.
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