Quantum (QMCO) - Stock price history

Stock price history of Quantum from 1999 to 2025

Annual Stock Price Performance

Year	Performance
2025	-85.80%
2024	692.94%
2023	-70.34%
2022	-80.67%
2021	-13.21%
2020	-15.12%
2019	278.57%
2018	-66.16%
2017	-19.11%
2016	-5.68%
2015	-45.93%
2014	46.67%
2013	-7.69%
2012	-44.39%
2011	-38.30%
2010	24.00%
2009	536.96%
2008	-86.21%
2007	16.45%
2006	-23.93%
2005	17.31%
2004	-17.87%
2003	4.00%
2002	-73.17%
2001	-21.98%
2000	-15.54%
1999	-21.43%

Stock price for similar companies or competitors

Company	Stock price	Change 1d%	Country
Quantum QMCO	£5.76	-14.40%	🇺🇸 USA
Seagate Technology STX	£212.81	-0.72%	🇮🇪 Ireland

What is the market capitalization of a company?

The market capitalization sometimes referred as Marketcap, is the value of a publicly listed company.
In most cases it can be easily calculated by multiplying the share price with the amount of outstanding shares.

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Stock price history for Quantum (QMCO)