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.

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Historical Stock Price — 2012

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2012-12-31$198.40$198.4017,314
2012-12-28$198.40$198.404,944
2012-12-27$203.20$203.204,900
2012-12-26$206.40$206.402,766
2012-12-24$206.40$206.401,606
2012-12-21$209.60$209.6010,844
2012-12-20$217.60$217.6038,446
2012-12-19$206.40$206.405,111
2012-12-18$201.60$201.607,099
2012-12-17$200.00$200.004,894
2012-12-14$193.60$193.603,778
2012-12-13$192.00$192.0016,505
2012-12-12$200.00$200.006,063
2012-12-11$212.80$212.806,298
2012-12-10$211.20$211.208,843
2012-12-07$201.60$201.608,197
2012-12-06$195.20$195.2021,759
2012-12-05$187.20$187.206,720
2012-12-04$184.00$184.005,388
2012-12-03$184.00$184.0015,507
2012-11-30$192.00$192.0012,192
2012-11-29$193.60$193.606,031
2012-11-28$193.60$193.603,328
2012-11-27$193.60$193.604,620
2012-11-26$196.80$196.804,669
2012-11-23$200.00$200.004,068
2012-11-21$196.80$196.805,802
2012-11-20$195.20$195.2014,053
2012-11-19$196.80$196.8065,004
2012-11-16$200.00$200.006,959
2012-11-15$209.60$209.608,530
2012-11-14$209.60$209.6010,212
2012-11-13$224.00$224.0022,358
2012-11-12$214.40$214.4011,827
2012-11-09$228.80$228.8012,042
2012-11-08$227.20$227.208,388
2012-11-07$225.60$225.6013,334
2012-11-06$230.40$230.4010,700
2012-11-05$224.00$224.0017,913
2012-11-02$219.20$219.2077,011
2012-11-01$188.80$188.8028,951
2012-10-31$168.00$168.0083,509
2012-10-26$176.00$176.0098,909
2012-10-25$195.20$195.20138,011
2012-10-24$230.40$230.4032,141
2012-10-23$244.80$244.807,376
2012-10-22$248.00$248.004,301
2012-10-19$244.80$244.8010,516
2012-10-18$256.00$256.004,237
2012-10-17$262.40$262.4011,056
2012-10-16$270.40$270.404,939
2012-10-15$262.40$262.405,274
2012-10-12$267.20$267.203,924
2012-10-11$265.60$265.608,269
2012-10-10$265.60$265.602,298
2012-10-09$265.60$265.604,704
2012-10-08$259.20$259.205,903
2012-10-05$256.00$256.006,055
2012-10-04$270.40$270.409,676
2012-10-03$252.80$252.804,756
2012-10-02$256.00$256.004,411
2012-10-01$262.40$262.404,566
2012-09-28$257.60$257.604,045
2012-09-27$252.80$252.806,703
2012-09-26$259.20$259.204,660
2012-09-25$252.80$252.807,497
2012-09-24$260.80$260.806,811
2012-09-21$260.80$260.808,904
2012-09-20$252.80$252.801,957
2012-09-19$256.00$256.004,114
2012-09-18$256.00$256.006,850
2012-09-17$264.00$264.004,756
2012-09-14$265.60$265.6016,342
2012-09-13$262.40$262.4011,646
2012-09-12$256.00$256.009,663
2012-09-11$254.40$254.406,594
2012-09-10$265.60$265.605,833
2012-09-07$260.80$260.803,582
2012-09-06$251.20$251.206,750
2012-09-05$240.00$240.0011,963
2012-09-04$246.40$246.406,839
2012-08-31$256.00$256.006,568
2012-08-30$243.20$243.201,802
2012-08-29$254.40$254.402,051
2012-08-28$257.60$257.604,500
2012-08-27$256.00$256.004,500
2012-08-24$251.20$251.204,903
2012-08-23$254.40$254.406,929
2012-08-22$276.80$276.803,791
2012-08-21$272.00$272.0011,755
2012-08-20$268.80$268.805,924
2012-08-17$273.60$273.605,018
2012-08-16$272.00$272.0010,369
2012-08-15$256.00$256.002,919
2012-08-14$257.60$257.606,293
2012-08-13$268.80$268.808,514
2012-08-10$259.20$259.2010,780
2012-08-09$244.80$244.805,753
2012-08-08$235.20$235.207,387
2012-08-07$241.60$241.608,141
2012-08-06$233.60$233.607,934
2012-08-03$225.60$225.609,198
2012-08-02$206.40$206.409,713
2012-08-01$217.60$217.6012,657
2012-07-31$236.80$236.807,439
2012-07-30$236.80$236.805,467
2012-07-27$243.20$243.2013,356
2012-07-26$224.00$224.0014,201
2012-07-25$195.20$195.2013,549
2012-07-24$192.00$192.008,908
2012-07-23$198.40$198.4015,521
2012-07-20$204.80$204.8010,987
2012-07-19$214.40$214.4023,041
2012-07-18$195.20$195.2050,396
2012-07-17$203.20$203.2022,763
2012-07-16$200.00$200.0029,356
2012-07-13$216.00$216.0013,293
2012-07-12$225.60$225.6035,747
2012-07-11$224.00$224.0037,723
2012-07-10$243.20$243.2065,808
2012-07-09$336.00$336.004,218
2012-07-06$340.80$340.803,082
2012-07-05$345.60$345.604,396
2012-07-03$334.40$334.402,744
2012-07-02$331.20$331.2010,444
2012-06-29$324.80$324.809,037
2012-06-28$307.20$307.206,896
2012-06-27$310.40$310.403,544
2012-06-26$310.40$310.403,279
2012-06-25$316.80$316.8011,038
2012-06-22$347.20$347.2012,071
2012-06-21$328.00$328.006,100
2012-06-20$347.20$347.204,006
2012-06-19$339.20$339.206,384
2012-06-18$326.40$326.406,597
2012-06-15$339.20$339.207,894
2012-06-14$328.00$328.004,176
2012-06-13$323.20$323.207,752
2012-06-12$320.00$320.004,066
2012-06-11$304.00$304.004,237
2012-06-08$318.40$318.403,447
2012-06-07$308.80$308.805,154
2012-06-06$320.00$320.007,565
2012-06-05$308.80$308.803,456
2012-06-04$299.20$299.204,040
2012-06-01$294.40$294.405,944
2012-05-31$312.00$312.008,235
2012-05-30$304.00$304.004,097
2012-05-29$320.00$320.003,983
2012-05-25$302.40$302.405,534
2012-05-24$304.00$304.0010,834
2012-05-23$296.00$296.0011,478
2012-05-22$289.60$289.609,516
2012-05-21$304.00$304.0011,757
2012-05-18$302.40$302.407,166
2012-05-17$312.00$312.009,859
2012-05-16$321.60$321.605,054
2012-05-15$320.00$320.004,521
2012-05-14$321.60$321.604,228
2012-05-11$324.80$324.8014,746
2012-05-10$331.20$331.2016,538
2012-05-09$342.40$342.406,246
2012-05-08$331.20$331.207,113
2012-05-07$340.80$340.809,583
2012-05-04$358.40$358.407,056
2012-05-03$371.20$371.205,356
2012-05-02$380.80$380.807,386
2012-05-01$379.20$379.207,629
2012-04-30$380.80$380.803,516
2012-04-27$384.00$384.007,564
2012-04-26$388.80$388.801,658
2012-04-25$385.60$385.608,788
2012-04-24$376.00$376.009,134
2012-04-23$353.60$353.609,367
2012-04-20$363.20$363.207,293
2012-04-19$361.60$361.606,229
2012-04-18$376.00$376.006,022
2012-04-17$385.60$385.604,757
2012-04-16$392.00$392.0010,347
2012-04-13$372.80$372.806,168
2012-04-12$387.20$387.208,622
2012-04-11$384.00$384.005,703
2012-04-10$369.60$369.6018,102
2012-04-09$401.60$401.609,239
2012-04-05$403.20$403.207,892
2012-04-04$422.40$422.408,002
2012-04-03$432.00$432.008,356
2012-04-02$430.40$430.409,043
2012-03-30$419.20$419.209,306
2012-03-29$422.40$422.404,579
2012-03-28$412.80$412.806,373
2012-03-27$432.00$432.006,318
2012-03-26$433.60$433.605,885
2012-03-23$424.00$424.003,646
2012-03-22$417.60$417.607,004
2012-03-21$419.20$419.205,973
2012-03-20$419.20$419.204,216
2012-03-19$425.60$425.606,776
2012-03-16$416.00$416.0012,321
2012-03-15$404.80$404.8022,287
2012-03-14$385.60$385.603,401
2012-03-13$393.60$393.605,014
2012-03-12$385.60$385.604,398
2012-03-09$382.40$382.407,498
2012-03-08$376.00$376.005,905
2012-03-07$376.00$376.004,575
2012-03-06$376.00$376.009,008
2012-03-05$388.80$388.806,764
2012-03-02$398.40$398.4012,902
2012-03-01$416.00$416.006,989
2012-02-29$420.80$420.8010,619
2012-02-28$420.80$420.804,691
2012-02-27$425.60$425.6011,521
2012-02-24$440.00$440.003,941
2012-02-23$441.60$441.6010,804
2012-02-22$435.20$435.204,658
2012-02-21$436.80$436.805,360
2012-02-17$440.00$440.005,523
2012-02-16$444.80$444.8010,892
2012-02-15$400.00$400.0013,271
2012-02-14$406.40$406.408,681
2012-02-13$420.80$420.806,222
2012-02-10$432.00$432.004,240
2012-02-09$438.40$438.405,316
2012-02-08$456.00$456.005,764
2012-02-07$459.20$459.2012,529
2012-02-06$452.80$452.8018,441
2012-02-03$449.60$449.6020,391
2012-02-02$425.60$425.609,742
2012-02-01$430.40$430.4014,231
2012-01-31$403.20$403.2012,602
2012-01-30$384.00$384.0013,901
2012-01-27$409.60$409.6012,004
2012-01-26$388.80$388.8019,971
2012-01-25$449.60$449.6017,188
2012-01-24$443.20$443.2014,042
2012-01-23$435.20$435.204,219
2012-01-20$430.40$430.406,377
2012-01-19$425.60$425.605,189
2012-01-18$420.80$420.806,243
2012-01-17$401.60$401.609,290
2012-01-13$406.40$406.407,791
2012-01-12$412.80$412.8011,113
2012-01-11$387.20$387.2011,691
2012-01-10$363.20$363.207,741
2012-01-09$368.00$368.009,163
2012-01-06$364.80$364.808,242
2012-01-05$379.20$379.207,026
2012-01-04$366.40$366.406,078
2012-01-03$356.80$356.8017,421