NASDAQ:QMCO | Stock Price History | 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.

Historical Stock Price

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2026-09-04$24.4226,908
2026-09-03$22.8132,690
2026-09-02$23.9645,687
2026-09-01$23.8024,983
2026-08-31$21.9838,443
2026-08-28$23.3022,237
2026-08-27$23.56$23.56878,300$23.3628,367
2026-08-26$23.21$23.21856,500$22.2728,175
2026-08-25$22.39$22.39961,000$22.0135,570
2026-08-24$21.56$21.56924,100$21.3331,430
2026-08-21$22.25$22.251,459,900$21.0157,591
2026-08-20$20.49$20.491,461,500$21.6874,923
2026-08-19$21.79$21.791,862,800$23.1146,380
2026-08-18$23.52$23.521,596,800$23.8845,225
2026-08-17$24.92$24.922,094,600$24.6657,316
2026-08-14$26.11$26.114,278,000$24.5689,400
2026-08-13$24.68$24.684,386,800$21.78140,961
2026-08-12$21.94$21.945,060,000$20.21146,395
2026-08-11$19.40$19.4016,536,800$14.59417,561
2026-08-10$11.78$11.781,443,500$12.1587,213
2026-08-07$12.04$12.04656,900$11.8432,449
2026-08-06$11.68$11.68548,100$11.2819,749
2026-08-05$11.58$11.58486,400$11.2832,478
2026-08-04$11.45$11.451,192,500$10.8664,178
2026-08-03$10.56$10.56728,100$10.3038,389
2026-07-31$10.64$10.641,407,200$11.47122,564
2026-07-30$11.24$11.241,472,300$11.31103,659
2026-07-29$10.45$10.451,583,300$11.2870,242
2026-07-28$11.28$11.281,136,900$10.8299,759
2026-07-27$10.97$10.971,063,700$11.34110,613
2026-07-24$11.10$11.10347,600$11.4032,425
2026-07-23$11.55$11.55611,000$11.5526,309
2026-07-22$11.66$11.66654,200$11.3129,971
2026-07-21$11.46$11.46688,900$11.5451,633
2026-07-20$10.99$10.99689,400$10.6929,163
2026-07-17$10.63$10.631,023,500
2026-07-16$9.60$9.60943,500
2026-07-15$10.30$10.301,483,700
2026-07-14$10.06$10.06555,200
2026-07-13$9.67$9.67437,100
2026-07-10$10.02$10.02720,600
2026-07-09$10.40$10.40772,600
2026-07-08$10.60$10.601,420,000
2026-07-07$10.13$10.13605,200
2026-07-06$10.53$10.53624,500
2026-07-02$10.16$10.16685,100
2026-07-01$10.93$10.93781,300
2026-06-30$11.00$11.001,031,600
2026-06-29$11.85$11.851,128,300
2026-06-26$11.65$11.652,305,700
2026-06-25$12.93$12.931,322,300
2026-06-24$13.42$13.42629,600
2026-06-23$13.81$13.81733,100
2026-06-22$14.04$14.041,192,100
2026-06-18$15.60$15.601,312,200
2026-06-17$14.95$14.951,095,100
2026-06-16$14.41$14.411,647,700
2026-06-15$13.97$13.972,448,200
2026-06-12$13.74$13.741,278,400
2026-06-11$13.06$13.061,062,100
2026-06-10$12.59$12.59884,000
2026-06-09$13.05$13.052,079,400
2026-06-08$12.54$12.541,467,000
2026-06-05$12.70$12.702,645,600
2026-06-04$15.78$15.783,860,200
2026-06-03$15.95$15.954,852,500
2026-06-02$12.54$12.543,310,200
2026-06-01$10.49$10.491,165,700
2026-05-29$9.71$9.71520,200
2026-05-28$9.32$9.32607,800
2026-05-27$8.82$8.82399,700
2026-05-26$8.73$8.73565,700
2026-05-22$9.05$9.051,860,000
2026-05-21$9.41$9.411,303,500
2026-05-20$8.16$8.16319,000
2026-05-19$7.71$7.71385,900
2026-05-18$7.98$7.98471,700
2026-05-15$8.35$8.35402,000
2026-05-14$8.80$8.80469,500
2026-05-13$8.81$8.81380,200
2026-05-12$8.94$8.94678,300
2026-05-11$9.78$9.78934,200
2026-05-08$9.62$9.62504,800
2026-05-07$9.13$9.13881,800
2026-05-06$10.03$10.032,269,700
2026-05-05$8.27$8.27765,300
2026-05-04$7.56$7.56342,200
2026-05-01$7.52$7.52359,100
2026-04-30$7.14$7.14275,800
2026-04-29$6.81$6.81272,700
2026-04-28$6.72$6.72212,200
2026-04-27$6.92$6.92342,500
2026-04-24$7.17$7.17599,400
2026-04-23$7.04$7.04269,300
2026-04-22$7.18$7.18219,900
2026-04-21$6.97$6.97256,700
2026-04-20$7.20$7.20232,300
2026-04-17$7.28$7.28523,500
2026-04-16$7.07$7.07581,100
2026-04-15$7.25$7.25977,000