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 — 2015

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2015-12-31$148.80$148.808,154
2015-12-30$144.00$144.006,620
2015-12-29$145.60$145.6017,317
2015-12-28$136.00$136.008,778
2015-12-24$136.00$136.004,226
2015-12-23$137.60$137.607,199
2015-12-22$134.40$134.408,273
2015-12-21$121.60$121.607,642
2015-12-18$131.20$131.2061,181
2015-12-17$112.00$112.0021,193
2015-12-16$112.00$112.00121,728
2015-12-15$120.00$120.006,000
2015-12-14$120.00$120.0011,271
2015-12-11$123.20$123.205,756
2015-12-10$128.00$128.007,273
2015-12-09$124.80$124.808,072
2015-12-08$129.60$129.609,233
2015-12-07$129.60$129.6010,048
2015-12-04$134.40$134.407,228
2015-12-03$137.60$137.606,171
2015-12-02$142.40$142.403,337
2015-12-01$142.40$142.403,810
2015-11-30$140.80$140.809,690
2015-11-27$142.40$142.402,015
2015-11-25$142.40$142.408,063
2015-11-24$142.40$142.406,737
2015-11-23$142.40$142.404,956
2015-11-20$145.60$145.6011,205
2015-11-19$137.60$137.6013,133
2015-11-18$131.20$131.207,393
2015-11-17$124.80$124.808,634
2015-11-16$134.40$134.406,343
2015-11-13$148.80$148.804,845
2015-11-12$152.00$152.003,420
2015-11-11$155.20$155.203,945
2015-11-10$153.60$153.605,159
2015-11-09$163.20$163.2014,361
2015-11-06$166.40$166.405,194
2015-11-05$168.00$168.0015,136
2015-11-04$148.80$148.809,820
2015-11-03$148.80$148.807,445
2015-11-02$142.40$142.406,081
2015-10-30$134.40$134.4020,593
2015-10-29$118.40$118.4010,296
2015-10-28$124.80$124.8013,001
2015-10-27$128.00$128.005,627
2015-10-26$136.00$136.003,208
2015-10-23$140.80$140.802,755
2015-10-22$137.60$137.603,363
2015-10-21$136.00$136.003,079
2015-10-20$144.00$144.002,743
2015-10-19$144.00$144.005,326
2015-10-16$148.80$148.808,146
2015-10-15$153.60$153.606,418
2015-10-14$156.80$156.8013,287
2015-10-13$137.60$137.603,265
2015-10-12$140.80$140.807,153
2015-10-09$148.80$148.8021,577
2015-10-08$121.60$121.6014,198
2015-10-07$121.60$121.6013,180
2015-10-06$115.20$115.2014,311
2015-10-05$120.00$120.005,331
2015-10-02$129.60$129.607,153
2015-10-01$124.80$124.808,731
2015-09-30$112.00$112.0016,214
2015-09-29$112.00$112.0015,628
2015-09-28$120.00$120.008,616
2015-09-25$124.80$124.8014,648
2015-09-24$126.40$126.4018,833
2015-09-23$129.60$129.6010,083
2015-09-22$128.00$128.0034,942
2015-09-21$136.00$136.0020,296
2015-09-18$148.80$148.8014,993
2015-09-17$158.40$158.408,204
2015-09-16$155.20$155.207,738
2015-09-15$150.40$150.409,406
2015-09-14$163.20$163.2011,256
2015-09-11$164.80$164.805,327
2015-09-10$168.00$168.0011,653
2015-09-09$176.00$176.0015,465
2015-09-08$174.40$174.4012,194
2015-09-04$171.20$171.205,794
2015-09-03$172.80$172.804,976
2015-09-02$169.60$169.6011,950
2015-09-01$177.60$177.6010,766
2015-08-31$187.20$187.2010,214
2015-08-28$187.20$187.2016,824
2015-08-27$179.20$179.2012,651
2015-08-26$174.40$174.4011,223
2015-08-25$172.80$172.8011,751
2015-08-24$172.80$172.8013,089
2015-08-21$168.00$168.0012,001
2015-08-20$171.20$171.2012,994
2015-08-19$180.80$180.8026,863
2015-08-18$172.80$172.806,581
2015-08-17$172.80$172.804,898
2015-08-14$176.00$176.0011,166
2015-08-13$163.20$163.2014,689
2015-08-12$174.40$174.406,313
2015-08-11$174.40$174.4032,804
2015-08-10$185.60$185.608,373
2015-08-07$184.00$184.0011,471
2015-08-06$184.00$184.0027,003
2015-08-05$184.00$184.0027,579
2015-08-04$171.20$171.207,039
2015-08-03$172.80$172.807,996
2015-07-31$169.60$169.6021,449
2015-07-30$190.40$190.4012,367
2015-07-29$192.00$192.0014,104
2015-07-28$195.20$195.207,244
2015-07-27$192.00$192.007,249
2015-07-24$192.00$192.0010,751
2015-07-23$196.80$196.807,967
2015-07-22$198.40$198.407,336
2015-07-21$201.60$201.607,282
2015-07-20$203.20$203.2021,304
2015-07-17$206.40$206.4017,846
2015-07-16$209.60$209.6072,462
2015-07-15$272.00$272.007,397
2015-07-14$270.40$270.4038,720
2015-07-13$270.40$270.405,360
2015-07-10$256.00$256.005,331
2015-07-09$254.40$254.406,573
2015-07-08$259.20$259.206,208
2015-07-07$262.40$262.409,422
2015-07-06$264.00$264.008,929
2015-07-02$267.20$267.204,467
2015-07-01$270.40$270.406,001
2015-06-30$268.80$268.805,994
2015-06-29$272.00$272.006,644
2015-06-26$275.20$275.2017,334
2015-06-25$284.80$284.809,063
2015-06-24$281.60$281.605,301
2015-06-23$300.80$300.803,263
2015-06-22$302.40$302.404,696
2015-06-19$288.00$288.0014,774
2015-06-18$302.40$302.407,166
2015-06-17$294.40$294.405,519
2015-06-16$291.20$291.205,321
2015-06-15$284.80$284.8015,058
2015-06-12$299.20$299.2011,996
2015-06-11$312.00$312.0010,323
2015-06-10$316.80$316.806,694
2015-06-09$315.20$315.206,502
2015-06-08$320.00$320.006,230
2015-06-05$323.20$323.209,271
2015-06-04$312.00$312.005,559
2015-06-03$320.00$320.005,276
2015-06-02$320.00$320.006,511
2015-06-01$308.80$308.808,415
2015-05-29$326.40$326.406,043
2015-05-28$323.20$323.2022,372
2015-05-27$310.40$310.406,238
2015-05-26$302.40$302.407,070
2015-05-22$305.60$305.604,301
2015-05-21$307.20$307.204,866
2015-05-20$304.00$304.003,693
2015-05-19$304.00$304.006,804
2015-05-18$315.20$315.2010,333
2015-05-15$302.40$302.4027,214
2015-05-14$308.80$308.806,840
2015-05-13$308.80$308.808,676
2015-05-12$316.80$316.8010,279
2015-05-11$329.60$329.608,529
2015-05-08$329.60$329.6011,636
2015-05-07$329.60$329.6029,428
2015-05-06$336.00$336.0013,541
2015-05-05$340.80$340.8012,103
2015-05-04$350.40$350.4032,156
2015-05-01$324.80$324.809,664
2015-04-30$321.60$321.6010,866
2015-04-29$339.20$339.2017,196
2015-04-28$331.20$331.206,976
2015-04-27$331.20$331.2011,316
2015-04-24$331.20$331.205,449
2015-04-23$334.40$334.407,777
2015-04-22$324.80$324.808,921
2015-04-21$332.80$332.8010,703
2015-04-20$331.20$331.2021,193
2015-04-17$315.20$315.2013,829
2015-04-16$312.00$312.0023,517
2015-04-15$302.40$302.4012,128
2015-04-14$294.40$294.409,717
2015-04-13$292.80$292.8013,952
2015-04-10$294.40$294.40129,436
2015-04-09$238.40$238.406,058
2015-04-08$248.00$248.0019,798
2015-04-07$249.60$249.603,056
2015-04-06$252.80$252.804,046
2015-04-02$256.00$256.002,489
2015-04-01$249.60$249.606,141
2015-03-31$256.00$256.0016,964
2015-03-30$262.40$262.402,352
2015-03-27$262.40$262.403,113
2015-03-26$259.20$259.203,176
2015-03-25$259.20$259.204,212
2015-03-24$267.20$267.203,514
2015-03-23$262.40$262.409,746
2015-03-20$265.60$265.6010,526
2015-03-19$273.60$273.602,090
2015-03-18$273.60$273.602,534
2015-03-17$275.20$275.202,819
2015-03-16$273.60$273.603,972
2015-03-13$275.20$275.207,931
2015-03-12$278.40$278.405,276
2015-03-11$270.40$270.406,956
2015-03-10$262.40$262.402,838
2015-03-09$265.60$265.603,158
2015-03-06$265.60$265.606,111
2015-03-05$281.60$281.607,153
2015-03-04$273.60$273.606,085
2015-03-03$273.60$273.604,946
2015-03-02$268.80$268.803,974
2015-02-27$260.80$260.803,328
2015-02-26$265.60$265.603,249
2015-02-25$268.80$268.801,973
2015-02-24$270.40$270.402,549
2015-02-23$270.40$270.403,466
2015-02-20$273.60$273.6013,233
2015-02-19$278.40$278.4011,054
2015-02-18$275.20$275.2010,211
2015-02-17$264.00$264.0011,506
2015-02-13$256.00$256.0013,336
2015-02-12$251.20$251.2034,190
2015-02-11$246.40$246.406,938
2015-02-10$252.80$252.803,563
2015-02-09$252.80$252.808,456
2015-02-06$257.60$257.6010,081
2015-02-05$259.20$259.2012,215
2015-02-04$257.60$257.605,021
2015-02-03$257.60$257.603,466
2015-02-02$256.00$256.005,133
2015-01-30$252.80$252.8016,610
2015-01-29$264.00$264.0024,323
2015-01-28$254.40$254.407,553
2015-01-27$257.60$257.606,811
2015-01-26$257.60$257.603,501
2015-01-23$257.60$257.604,699
2015-01-22$259.20$259.209,013
2015-01-21$246.40$246.403,182
2015-01-20$248.00$248.006,019
2015-01-16$256.00$256.008,192
2015-01-15$259.20$259.209,278
2015-01-14$257.60$257.6024,806
2015-01-13$280.00$280.0013,924
2015-01-12$267.20$267.205,893
2015-01-09$268.80$268.807,439
2015-01-08$267.20$267.207,776
2015-01-07$259.20$259.209,828
2015-01-06$260.80$260.807,218
2015-01-05$275.20$275.209,769
2015-01-02$275.20$275.206,933