NASDAQ:QMCO | Historical Stock Price | QUANTUM CORP /DE/

Complete retained daily price history on its own workbook tab. Split-adjusted close keeps every historical share price on one comparable split basis. Cumulative dividend-reinvested close is the daily close of a rebased total-return index: it starts with one share at the earliest retained close, reinvests every distribution, and normalizes every forward and reverse split exactly once. Admitted exchange opening prices remain a distinct current-session series.

Available history
1999-08-02 to 2026-09-04
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$2.74$11.43$47.72$199.28$832.22$3,475.501999-08-022026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

View year

Historical Stock Price — 2025

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2025-12-31$6.45$6.451,191,800
2025-12-30$6.75$6.75451,000
2025-12-29$6.78$6.78530,500
2025-12-26$6.96$6.96468,200
2025-12-24$7.37$7.37177,300
2025-12-23$7.24$7.24474,500
2025-12-22$7.43$7.43654,200
2025-12-19$7.32$7.32724,700
2025-12-18$7.25$7.25538,800
2025-12-17$7.42$7.42317,900
2025-12-16$7.96$7.96354,400
2025-12-15$7.73$7.73576,700
2025-12-12$9.03$9.03555,900
2025-12-11$9.75$9.75680,200
2025-12-10$9.49$9.49763,400
2025-12-09$9.04$9.04384,300
2025-12-08$9.10$9.10362,200
2025-12-05$8.72$8.72492,100
2025-12-04$8.74$8.74637,900
2025-12-03$8.26$8.26329,600
2025-12-02$7.72$7.72236,400
2025-12-01$7.54$7.54258,700
2025-11-28$7.85$7.85303,000
2025-11-26$7.48$7.48475,100
2025-11-25$6.95$6.95568,900
2025-11-24$6.97$6.97666,700
2025-11-21$6.98$6.98980,600
2025-11-20$7.31$7.31828,300
2025-11-19$7.64$7.64505,900
2025-11-18$7.71$7.71623,300
2025-11-17$7.39$7.39895,100
2025-11-14$7.87$7.872,204,300
2025-11-13$7.03$7.03808,200
2025-11-12$7.70$7.70437,900
2025-11-11$7.88$7.88320,700
2025-11-10$8.19$8.19502,200
2025-11-07$8.18$8.18838,600
2025-11-06$8.05$8.05711,400
2025-11-05$8.20$8.20677,700
2025-11-04$8.49$8.49744,600
2025-11-03$9.39$9.39676,100
2025-10-31$9.44$9.44866,300
2025-10-30$9.40$9.40605,600
2025-10-29$9.63$9.631,266,000
2025-10-28$10.05$10.051,074,700
2025-10-27$10.14$10.141,499,200
2025-10-24$10.46$10.461,247,700
2025-10-23$10.25$10.251,535,500
2025-10-22$9.32$9.321,284,300
2025-10-21$9.91$9.91860,900
2025-10-20$10.35$10.35866,300
2025-10-17$10.29$10.291,190,800
2025-10-16$11.18$11.181,457,300
2025-10-15$12.44$12.442,150,500
2025-10-14$12.69$12.692,884,300
2025-10-13$11.80$11.802,020,200
2025-10-10$10.96$10.962,761,500
2025-10-09$12.54$12.541,786,400
2025-10-08$12.94$12.943,058,400
2025-10-07$13.35$13.359,097,300
2025-10-06$11.91$11.912,423,400
2025-10-03$11.76$11.765,414,900
2025-10-02$10.92$10.922,191,800
2025-10-01$10.89$10.892,041,700
2025-09-30$9.92$9.921,389,300
2025-09-29$9.80$9.801,078,300
2025-09-26$9.48$9.481,926,800
2025-09-25$9.62$9.622,037,900
2025-09-24$10.16$10.162,563,700
2025-09-23$10.69$10.694,938,300
2025-09-22$11.46$11.469,818,500
2025-09-19$11.88$11.8822,217,500
2025-09-18$8.45$8.452,152,900
2025-09-17$8.35$8.351,422,100
2025-09-16$8.27$8.271,137,900
2025-09-15$7.88$7.881,156,900
2025-09-12$7.36$7.361,557,700
2025-09-11$7.12$7.122,176,200
2025-09-10$8.57$8.572,113,000
2025-09-09$7.99$7.99531,200
2025-09-08$7.59$7.59342,800
2025-09-05$7.42$7.42277,100
2025-09-04$7.18$7.18203,000
2025-09-03$7.21$7.21212,600
2025-09-02$7.30$7.30243,200
2025-08-29$7.43$7.43305,700
2025-08-28$7.63$7.63384,900
2025-08-27$7.33$7.33652,800
2025-08-26$7.94$7.94678,500
2025-08-25$7.78$7.78350,900
2025-08-22$7.75$7.75564,500
2025-08-21$7.03$7.03329,700
2025-08-20$6.77$6.77419,100
2025-08-19$6.83$6.83802,300
2025-08-18$7.44$7.44236,400
2025-08-15$7.55$7.55466,700
2025-08-14$7.87$7.87329,600
2025-08-13$8.00$8.00675,600
2025-08-12$7.43$7.43892,300
2025-08-11$7.66$7.66459,400
2025-08-08$7.80$7.80465,900
2025-08-07$7.92$7.92261,600
2025-08-06$7.91$7.91379,200
2025-08-05$8.31$8.31661,300
2025-08-04$8.08$8.08520,100
2025-08-01$7.53$7.53605,000
2025-07-31$8.01$8.01445,600
2025-07-30$7.87$7.87376,800
2025-07-29$7.88$7.88674,300
2025-07-28$8.28$8.281,011,500
2025-07-25$8.88$8.88423,200
2025-07-24$8.88$8.88476,800
2025-07-23$9.15$9.15597,700
2025-07-22$9.16$9.16664,700
2025-07-21$9.02$9.02702,300
2025-07-18$9.15$9.151,044,500
2025-07-17$9.38$9.381,314,500
2025-07-16$9.65$9.651,943,300
2025-07-15$8.61$8.61552,100
2025-07-14$8.71$8.71496,100
2025-07-11$8.65$8.65688,500
2025-07-10$9.01$9.01881,300
2025-07-09$8.87$8.87614,900
2025-07-08$9.07$9.07695,300
2025-07-07$8.91$8.91657,800
2025-07-03$9.06$9.06622,000
2025-07-02$9.18$9.18860,200
2025-07-01$8.97$8.971,736,800
2025-06-30$9.97$9.972,634,700
2025-06-27$9.04$9.041,171,500
2025-06-26$9.09$9.09887,700
2025-06-25$8.64$8.64977,100
2025-06-24$8.82$8.821,167,900
2025-06-23$8.19$8.191,739,700
2025-06-20$8.43$8.432,842,100
2025-06-18$9.61$9.611,038,600
2025-06-17$9.89$9.891,133,500
2025-06-16$10.60$10.601,311,200
2025-06-13$9.94$9.941,224,000
2025-06-12$10.40$10.401,638,000
2025-06-11$10.97$10.974,709,800
2025-06-10$10.61$10.611,772,500
2025-06-09$11.15$11.151,732,100
2025-06-06$10.63$10.631,533,200
2025-06-05$10.35$10.353,024,900
2025-06-04$11.94$11.94973,300
2025-06-03$11.88$11.881,268,900
2025-06-02$11.74$11.741,243,100
2025-05-30$11.87$11.872,033,000
2025-05-29$12.50$12.503,575,400
2025-05-28$13.98$13.986,145,600
2025-05-27$12.26$12.262,398,600
2025-05-23$11.87$11.874,108,600
2025-05-22$12.88$12.888,052,700
2025-05-21$11.51$11.513,072,500
2025-05-20$12.86$12.866,414,800
2025-05-19$13.65$13.659,512,500
2025-05-16$10.94$10.941,856,200
2025-05-15$10.52$10.521,055,700
2025-05-14$11.01$11.011,571,800
2025-05-13$10.69$10.69774,300
2025-05-12$11.13$11.131,260,600
2025-05-09$10.80$10.801,215,300
2025-05-08$11.45$11.451,433,300
2025-05-07$10.87$10.87492,600
2025-05-06$11.32$11.32342,000
2025-05-05$11.05$11.05395,500
2025-05-02$11.19$11.19631,600
2025-05-01$10.98$10.98348,700
2025-04-30$10.80$10.80328,500
2025-04-29$11.21$11.21356,700
2025-04-28$11.51$11.51663,700
2025-04-25$11.84$11.84677,000
2025-04-24$11.38$11.38947,100
2025-04-23$10.40$10.40746,100
2025-04-22$9.92$9.92402,300
2025-04-21$9.84$9.84310,600
2025-04-17$10.32$10.32298,700
2025-04-16$10.40$10.40466,000
2025-04-15$11.20$11.20552,200
2025-04-14$12.19$12.19530,600
2025-04-11$11.22$11.22357,500
2025-04-10$11.08$11.08820,400
2025-04-09$12.08$12.08754,300
2025-04-08$10.48$10.48581,400
2025-04-07$11.25$11.25747,200
2025-04-04$11.35$11.35648,300
2025-04-03$12.44$12.44527,500
2025-04-02$13.11$13.111,012,700
2025-04-01$14.07$14.07588,500
2025-03-31$14.38$14.38655,800
2025-03-28$14.15$14.15571,500
2025-03-27$15.39$15.391,164,700
2025-03-26$15.01$15.011,192,200
2025-03-25$16.22$16.22913,500
2025-03-24$17.22$17.221,605,200
2025-03-21$16.72$16.722,638,300
2025-03-20$16.45$16.452,146,600
2025-03-19$19.63$19.633,217,000
2025-03-18$19.80$19.806,859,000
2025-03-17$21.49$21.496,760,500
2025-03-14$15.34$15.346,363,600
2025-03-13$14.82$14.824,136,600
2025-03-12$11.26$11.26431,000
2025-03-11$10.23$10.23242,300
2025-03-10$10.79$10.79295,500
2025-03-07$11.76$11.76240,300
2025-03-06$11.40$11.40372,400
2025-03-05$12.42$12.42484,400
2025-03-04$11.51$11.51507,000
2025-03-03$11.04$11.04464,300
2025-02-28$11.79$11.79415,600
2025-02-27$11.95$11.95574,300
2025-02-26$13.61$13.61483,500
2025-02-25$13.57$13.57782,500
2025-02-24$13.15$13.15857,100
2025-02-21$15.16$15.16940,600
2025-02-20$16.40$16.402,068,000
2025-02-19$15.83$15.831,962,700
2025-02-18$15.31$15.311,249,900
2025-02-14$17.17$17.171,785,400
2025-02-13$19.89$19.891,950,700
2025-02-12$23.23$23.234,253,700
2025-02-11$17.81$17.81430,500
2025-02-10$19.00$19.00908,100
2025-02-07$18.90$18.90845,400
2025-02-06$19.90$19.90578,100
2025-02-05$21.17$21.17613,600
2025-02-04$21.25$21.25647,200
2025-02-03$21.38$21.38705,000
2025-01-31$22.40$22.401,892,200
2025-01-30$22.45$22.45878,600
2025-01-29$22.45$22.451,061,900
2025-01-28$25.00$25.001,493,200
2025-01-27$29.79$29.79926,800
2025-01-24$32.57$32.57985,100
2025-01-23$33.44$33.44624,600
2025-01-22$35.76$35.761,372,600
2025-01-21$37.20$37.201,775,300
2025-01-17$32.60$32.601,587,800
2025-01-16$38.57$38.573,311,300
2025-01-15$33.50$33.505,605,900
2025-01-14$22.41$22.411,768,900
2025-01-13$20.90$20.901,723,600
2025-01-10$27.47$27.471,588,100
2025-01-08$31.43$31.432,415,700
2025-01-07$45.11$45.111,468,500
2025-01-06$51.88$51.881,886,800
2025-01-03$54.43$54.431,711,200
2025-01-02$54.42$54.421,980,000