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 — 2011

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2011-12-30$384.00$384.006,479
2011-12-29$379.20$379.205,135
2011-12-28$360.00$360.009,881
2011-12-27$371.20$371.205,549
2011-12-23$377.60$377.605,394
2011-12-22$376.00$376.008,788
2011-12-21$380.80$380.8010,874
2011-12-20$408.00$408.0012,763
2011-12-19$384.00$384.0010,536
2011-12-16$404.80$404.808,471
2011-12-15$403.20$403.208,541
2011-12-14$384.00$384.008,422
2011-12-13$403.20$403.208,966
2011-12-12$420.80$420.807,540
2011-12-09$440.00$440.006,724
2011-12-08$409.60$409.606,858
2011-12-07$430.40$430.405,073
2011-12-06$436.80$436.8015,009
2011-12-05$433.60$433.6010,559
2011-12-02$424.00$424.0012,508
2011-12-01$419.20$419.2011,659
2011-11-30$430.40$430.4019,698
2011-11-29$393.60$393.6012,061
2011-11-28$408.00$408.0017,858
2011-11-25$358.40$358.404,571
2011-11-23$376.00$376.0015,425
2011-11-22$411.20$411.2013,909
2011-11-21$408.00$408.0013,719
2011-11-18$414.40$414.407,862
2011-11-17$417.60$417.6013,720
2011-11-16$420.80$420.8010,664
2011-11-15$430.40$430.4012,113
2011-11-14$411.20$411.207,978
2011-11-11$416.00$416.006,829
2011-11-10$424.00$424.0010,735
2011-11-09$420.80$420.8018,351
2011-11-08$441.60$441.6016,903
2011-11-07$444.80$444.8012,743
2011-11-04$451.20$451.2012,255
2011-11-03$452.80$452.8018,738
2011-11-02$427.20$427.2014,696
2011-11-01$390.40$390.4031,857
2011-10-31$417.60$417.6018,312
2011-10-28$419.20$419.2034,519
2011-10-27$376.00$376.0026,327
2011-10-26$352.00$352.0022,139
2011-10-25$358.40$358.4015,529
2011-10-24$364.80$364.8014,734
2011-10-21$353.60$353.606,651
2011-10-20$344.00$344.0010,194
2011-10-19$356.80$356.806,828
2011-10-18$379.20$379.208,678
2011-10-17$368.00$368.009,016
2011-10-14$387.20$387.206,488
2011-10-13$379.20$379.209,938
2011-10-12$363.20$363.2014,991
2011-10-11$350.40$350.4016,669
2011-10-10$337.60$337.6017,926
2011-10-07$337.60$337.6021,384
2011-10-06$326.40$326.4014,111
2011-10-05$308.80$308.807,771
2011-10-04$304.00$304.0015,625
2011-10-03$273.60$273.6013,160
2011-09-30$289.60$289.6011,156
2011-09-29$302.40$302.4023,818
2011-09-28$299.20$299.2014,438
2011-09-27$323.20$323.2026,031
2011-09-26$292.80$292.809,433
2011-09-23$288.00$288.008,141
2011-09-22$288.00$288.0015,228
2011-09-21$302.40$302.409,261
2011-09-20$321.60$321.6010,013
2011-09-19$323.20$323.204,964
2011-09-16$340.80$340.8010,369
2011-09-15$337.60$337.606,423
2011-09-14$342.40$342.4014,820
2011-09-13$326.40$326.4013,668
2011-09-12$300.80$300.8011,305
2011-09-09$289.60$289.6010,549
2011-09-08$294.40$294.409,678
2011-09-07$308.80$308.8010,657
2011-09-06$280.00$280.0014,308
2011-09-02$276.80$276.8014,531
2011-09-01$299.20$299.2015,523
2011-08-31$312.00$312.008,053
2011-08-30$320.00$320.009,092
2011-08-29$316.80$316.807,875
2011-08-26$300.80$300.8016,522
2011-08-25$281.60$281.609,126
2011-08-24$297.60$297.607,431
2011-08-23$297.60$297.6017,336
2011-08-22$289.60$289.606,209
2011-08-19$286.40$286.409,471
2011-08-18$292.80$292.8014,838
2011-08-17$321.60$321.607,602
2011-08-16$329.60$329.6011,943
2011-08-15$339.20$339.2010,210
2011-08-12$329.60$329.6021,443
2011-08-11$304.00$304.0030,394
2011-08-10$272.00$272.0038,016
2011-08-09$273.60$273.6074,602
2011-08-08$283.20$283.2036,737
2011-08-05$348.80$348.8020,958
2011-08-04$348.80$348.8021,927
2011-08-03$380.80$380.8032,713
2011-08-02$390.40$390.4022,999
2011-08-01$404.80$404.8015,754
2011-07-29$420.80$420.8015,084
2011-07-28$433.60$433.6068,893
2011-07-27$500.80$500.8026,606
2011-07-26$497.60$497.606,450
2011-07-25$499.20$499.208,768
2011-07-22$507.20$507.206,848
2011-07-21$494.40$494.4027,926
2011-07-20$502.40$502.406,576
2011-07-19$505.60$505.607,820
2011-07-18$496.00$496.009,269
2011-07-15$505.60$505.6015,466
2011-07-14$512.00$512.007,832
2011-07-13$523.20$523.2012,321
2011-07-12$505.60$505.6012,811
2011-07-11$502.40$502.4012,191
2011-07-08$521.60$521.606,669
2011-07-07$532.80$532.809,683
2011-07-06$528.00$528.0011,258
2011-07-05$531.20$531.2012,456
2011-07-01$539.20$539.2013,759
2011-06-30$528.00$528.0015,790
2011-06-29$507.20$507.209,429
2011-06-28$513.60$513.607,504
2011-06-27$507.20$507.2011,107
2011-06-24$505.60$505.6030,205
2011-06-23$523.20$523.2013,624
2011-06-22$520.00$520.0011,692
2011-06-21$531.20$531.2022,416
2011-06-20$520.00$520.0015,118
2011-06-17$508.80$508.8017,706
2011-06-16$507.20$507.2023,170
2011-06-15$502.40$502.4022,448
2011-06-14$497.60$497.6019,180
2011-06-13$472.00$472.0016,626
2011-06-10$467.20$467.2020,264
2011-06-09$484.80$484.8011,071
2011-06-08$484.80$484.8014,053
2011-06-07$510.40$510.4013,122
2011-06-06$505.60$505.6020,624
2011-06-03$539.20$539.2061,706
2011-06-02$513.60$513.6018,463
2011-06-01$484.80$484.8027,799
2011-05-31$491.20$491.2018,082
2011-05-27$491.20$491.2015,240
2011-05-26$494.40$494.4015,506
2011-05-25$486.40$486.409,720
2011-05-24$462.40$462.409,549
2011-05-23$478.40$478.408,001
2011-05-20$492.80$492.8010,813
2011-05-19$496.00$496.0026,239
2011-05-18$502.40$502.4042,835
2011-05-17$446.40$446.4016,257
2011-05-16$454.40$454.4012,914
2011-05-13$480.00$480.007,363
2011-05-12$488.00$488.006,250
2011-05-11$480.00$480.008,630
2011-05-10$491.20$491.207,858
2011-05-09$480.00$480.007,808
2011-05-06$464.00$464.006,377
2011-05-05$454.40$454.4016,201
2011-05-04$472.00$472.0013,796
2011-05-03$486.40$486.4012,553
2011-05-02$492.80$492.8021,724
2011-04-29$508.80$508.8023,886
2011-04-28$494.40$494.407,443
2011-04-27$497.60$497.6019,754
2011-04-26$504.00$504.0018,125
2011-04-25$496.00$496.0013,638
2011-04-21$497.60$497.6018,651
2011-04-20$489.60$489.6028,140
2011-04-19$486.40$486.4019,154
2011-04-18$483.20$483.2026,061
2011-04-15$492.80$492.8025,809
2011-04-14$516.80$516.8063,037
2011-04-13$496.00$496.0076,246
2011-04-12$424.00$424.0011,539
2011-04-11$441.60$441.608,044
2011-04-08$448.00$448.0032,729
2011-04-07$438.40$438.409,697
2011-04-06$436.80$436.8023,876
2011-04-05$440.00$440.0033,925
2011-04-04$398.40$398.4016,631
2011-04-01$403.20$403.2017,730
2011-03-31$403.20$403.2017,813
2011-03-30$403.20$403.2028,167
2011-03-29$406.40$406.4022,993
2011-03-28$408.00$408.0016,344
2011-03-25$395.20$395.2014,391
2011-03-24$396.80$396.8017,959
2011-03-23$377.60$377.6019,414
2011-03-22$376.00$376.008,973
2011-03-21$395.20$395.2017,298
2011-03-18$377.60$377.6028,873
2011-03-17$361.60$361.6026,428
2011-03-16$377.60$377.6025,069
2011-03-15$403.20$403.2025,656
2011-03-14$406.40$406.4026,915
2011-03-11$411.20$411.2015,974
2011-03-10$406.40$406.4025,794
2011-03-09$414.40$414.4012,371
2011-03-08$425.60$425.6023,476
2011-03-07$398.40$398.4016,883
2011-03-04$404.80$404.8014,129
2011-03-03$400.00$400.0035,351
2011-03-02$392.00$392.0018,972
2011-03-01$411.20$411.2027,589
2011-02-28$414.40$414.4023,123
2011-02-25$424.00$424.0016,727
2011-02-24$425.60$425.6021,761
2011-02-23$427.20$427.2061,894
2011-02-22$433.60$433.6030,109
2011-02-18$452.80$452.8030,841
2011-02-17$459.20$459.2014,329
2011-02-16$462.40$462.4017,856
2011-02-15$451.20$451.2012,839
2011-02-14$454.40$454.4018,863
2011-02-11$456.00$456.0013,193
2011-02-10$457.60$457.6017,977
2011-02-09$465.60$465.6028,569
2011-02-08$464.00$464.0039,832
2011-02-07$457.60$457.6023,003
2011-02-04$452.80$452.8029,507
2011-02-03$441.60$441.6027,986
2011-02-02$444.80$444.8033,864
2011-02-01$457.60$457.6043,847
2011-01-31$430.40$430.4045,208
2011-01-28$441.60$441.6064,977
2011-01-27$481.60$481.60192,687
2011-01-26$574.40$574.4063,321
2011-01-25$612.80$612.8034,803
2011-01-24$628.80$628.8017,589
2011-01-21$624.00$624.0024,693
2011-01-20$627.20$627.2030,057
2011-01-19$638.40$638.4051,634
2011-01-18$656.00$656.0029,694
2011-01-14$608.00$608.0017,795
2011-01-13$608.00$608.0039,828
2011-01-12$636.80$636.8011,346
2011-01-11$640.00$640.0015,993
2011-01-10$652.80$652.8049,104
2011-01-07$688.00$688.0023,133
2011-01-06$697.60$697.6045,096
2011-01-05$676.80$676.8034,234
2011-01-04$678.40$678.4072,379
2011-01-03$622.40$622.4023,466