Quantum Corporation (QMCO) NASDAQ

Currency In USD

QMCO Historical Return

If you invested $1000 in Quantum Corporation (QMCO) 10 years ago, it would be worth $217.29 as of August 23, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $195.86, while $1000 invested 1 year ago would be worth $2,859.9. This corresponds to total returns of -78.27%, -80.41%, 185.99%, respectively, with annualized returns of -14.15%, -27.81%, 185.99%.

Custom investment amounts or purchase dates can also be explored using the Stoculator calculator. Past performance does not guarantee future results.

QMCO Historical Data

Date Range:

Date	Open	Close	Adj Close	High	Low	Volume
August 21, 2026	20.8	22.25	22.25	22.4	19.73	1.46M
August 20, 2026	21.52	20.49	20.49	21.79	19.73	1.46M
August 19, 2026	23.27	21.79	21.79	23.27	21.29	1.86M
August 18, 2026	23.84	23.52	23.52	26.28	23.46	1.58M
August 17, 2026	24.83	24.92	24.92	25.95	23.75	2.09M
August 14, 2026	24.68	26.11	26.11	27.8	24.1	4.27M
August 13, 2026	21.75	24.68	24.68	24.93	21.52	4.37M
August 12, 2026	20.1	21.94	21.94	22.22	20.01	5.03M
August 11, 2026	14.52	19.4	19.4	19.6	13.99	0
August 10, 2026	12.2	11.78	11.78	12.45	11.44	1.35M
August 07, 2026	11.88	12.04	12.04	12.18	11.65	0
August 06, 2026	11.39	11.68	11.68	12.19	11.06	547,683
August 05, 2026	11.33	11.58	11.58	11.98	11.13	485,529
August 04, 2026	10.88	11.45	11.45	11.63	10.76	1.19M
August 03, 2026	10.6	10.56	10.56	11.02	10.19	727,555
July 31, 2026	11.41	10.64	10.64	12.23	10.57	1.38M
July 30, 2026	11.41	11.24	11.24	11.43	10.34	1.47M
July 29, 2026	11.3	10.45	10.45	12.81	10.4	1.58M
July 28, 2026	10.91	11.28	11.28	11.43	9.86	1.14M
July 27, 2026	11.36	10.97	10.97	11.52	10.59	1.06M
July 23, 2026	11.37	11.55	11.55	12.35	11.34	610,996
July 22, 2026	11.29	11.66	11.66	12.24	11.27	651,964
July 21, 2026	11.54	11.46	11.46	11.67	11.32	687,386
July 20, 2026	10.67	10.99	10.99	11.48	10.54	687,977
July 17, 2026	9.16	10.63	10.63	10.8	9.06	1.02M
July 16, 2026	10.05	9.6	9.6	10.39	9.48	941,178
July 15, 2026	10.27	10.3	10.3	11.6	10.11	1.48M
July 14, 2026	9.66	10.06	10.06	10.31	9.66	555,205
July 13, 2026	9.88	9.67	9.67	10.16	9.56	434,981
July 10, 2026	10.35	10.02	10.02	10.45	9.63	720,644
July 09, 2026	10.78	10.4	10.4	10.97	10.31	767,582
July 08, 2026	9.89	10.6	10.6	10.69	9.83	1.42M
July 07, 2026	10.46	10.13	10.13	10.59	9.79	605,093
July 06, 2026	10.22	10.53	10.53	10.61	9.91	624,527
July 02, 2026	11.07	10.16	10.16	11.14	9.83	684,763
July 01, 2026	10.8	10.93	10.93	11.35	10.55	780,180
June 30, 2026	11.83	11	11	11.83	10.69	1.03M
June 29, 2026	11.71	11.85	11.85	12.73	11.33	1.12M
June 26, 2026	11.24	11.65	11.65	11.7	9.8	2.3M
June 25, 2026	14	12.93	12.93	14.41	12.53	1.31M
June 24, 2026	13.77	13.42	13.42	14.08	12.96	621,464
June 23, 2026	13.37	13.81	13.81	14.15	13.2	731,750
June 22, 2026	15.75	14.04	14.04	16.5	13.99	1.18M
June 18, 2026	15.49	15.6	15.6	16.38	15.09	1.31M
June 17, 2026	14.76	14.95	14.95	15.78	13.76	1.09M
June 16, 2026	13.74	14.41	14.41	16.15	13.56	1.64M
June 15, 2026	15.28	13.97	13.97	16	13.7	2.44M
June 12, 2026	13.1	13.74	13.74	14.84	12.7	1.28M
June 11, 2026	12.78	13.06	13.06	13.08	11.75	1.05M
June 10, 2026	12.82	12.59	12.59	14.12	12.55	877,882
June 09, 2026	12.67	13.05	13.05	14.98	11.99	2.08M
June 08, 2026	13.12	12.54	12.54	13.26	11.9	1.46M
June 05, 2026	15.23	12.7	12.7	15.74	12.15	0
June 04, 2026	14.65	15.78	15.78	18.48	14.61	3.85M
June 03, 2026	12.19	15.95	15.95	16.63	12.19	4.75M
June 02, 2026	10.43	12.54	12.54	13.01	10.22	3.3M
June 01, 2026	9.55	10.49	10.49	10.7	9.36	1.16M
May 29, 2026	9.31	9.71	9.71	9.92	9.05	520,100
May 28, 2026	8.65	9.32	9.32	9.54	8.61	600,311
May 27, 2026	8.68	8.82	8.82	8.96	8.33	398,164