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 — 2009

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2009-12-31$468.80$468.808,893
2009-12-30$475.20$475.209,049
2009-12-29$476.80$476.8011,019
2009-12-28$488.00$488.0017,961
2009-12-24$484.80$484.809,014
2009-12-23$475.20$475.2011,396
2009-12-22$467.20$467.2012,039
2009-12-21$464.00$464.0016,626
2009-12-18$441.60$441.6019,919
2009-12-17$456.00$456.0011,564
2009-12-16$457.60$457.609,566
2009-12-15$460.80$460.809,843
2009-12-14$460.80$460.8010,460
2009-12-11$465.60$465.6013,094
2009-12-10$459.20$459.2013,387
2009-12-09$449.60$449.6014,223
2009-12-08$438.40$438.4011,705
2009-12-07$444.80$444.8015,906
2009-12-04$432.00$432.0012,123
2009-12-03$420.80$420.8014,856
2009-12-02$419.20$419.2013,336
2009-12-01$406.40$406.4025,679
2009-11-30$390.40$390.4026,379
2009-11-27$374.40$374.407,838
2009-11-25$387.20$387.209,628
2009-11-24$400.00$400.0011,636
2009-11-23$404.80$404.8010,636
2009-11-20$401.60$401.607,108
2009-11-19$411.20$411.2014,970
2009-11-18$425.60$425.6013,169
2009-11-17$428.80$428.8021,734
2009-11-16$416.00$416.0023,673
2009-11-13$392.00$392.009,241
2009-11-12$395.20$395.2015,108
2009-11-11$388.80$388.8010,488
2009-11-10$384.00$384.0019,943
2009-11-09$392.00$392.0014,279
2009-11-06$390.40$390.4011,731
2009-11-05$393.60$393.6030,219
2009-11-04$376.00$376.0053,964
2009-11-03$328.00$328.0019,534
2009-11-02$286.40$286.4019,773
2009-10-30$296.00$296.0018,319
2009-10-29$305.60$305.6030,571
2009-10-28$316.80$316.8083,232
2009-10-27$260.80$260.8019,073
2009-10-26$244.80$244.8010,967
2009-10-23$241.60$241.6013,126
2009-10-22$244.80$244.8013,536
2009-10-21$235.20$235.2026,421
2009-10-20$217.60$217.606,304
2009-10-19$228.80$228.804,222
2009-10-16$228.80$228.805,797
2009-10-15$235.20$235.208,381
2009-10-14$235.20$235.2017,974
2009-10-13$233.60$233.606,733
2009-10-12$232.00$232.0010,818
2009-10-09$235.20$235.2015,763
2009-10-08$220.80$220.8023,133
2009-10-07$208.00$208.004,618
2009-10-06$203.20$203.2012,871
2009-10-05$198.40$198.407,709
2009-10-02$195.20$195.207,626
2009-10-01$196.80$196.808,121
2009-09-30$201.60$201.606,499
2009-09-29$200.00$200.006,356
2009-09-28$203.20$203.207,687
2009-09-25$188.80$188.804,555
2009-09-24$185.60$185.606,608
2009-09-23$193.60$193.605,648
2009-09-22$198.40$198.404,193
2009-09-21$196.80$196.806,249
2009-09-18$203.20$203.209,166
2009-09-17$204.80$204.807,128
2009-09-16$200.00$200.008,258
2009-09-15$192.00$192.0012,654
2009-09-14$187.20$187.203,473
2009-09-11$187.20$187.203,753
2009-09-10$192.00$192.006,343
2009-09-09$187.20$187.203,794
2009-09-08$182.40$182.407,293
2009-09-04$187.20$187.204,003
2009-09-03$182.40$182.403,129
2009-09-02$182.40$182.404,663
2009-09-01$185.60$185.607,020
2009-08-31$196.80$196.8016,937
2009-08-28$192.00$192.005,479
2009-08-27$195.20$195.207,266
2009-08-26$185.60$185.604,749
2009-08-25$185.60$185.607,614
2009-08-24$192.00$192.0011,324
2009-08-21$187.20$187.2012,120
2009-08-20$179.20$179.2012,125
2009-08-19$168.00$168.004,303
2009-08-18$163.20$163.203,445
2009-08-17$158.40$158.407,554
2009-08-14$168.00$168.007,433
2009-08-13$172.80$172.8016,619
2009-08-12$158.40$158.4011,074
2009-08-11$153.60$153.604,476
2009-08-10$155.20$155.205,356
2009-08-07$147.20$147.208,194
2009-08-06$152.00$152.003,726
2009-08-05$152.00$152.007,626
2009-08-04$144.00$144.009,396
2009-08-03$145.60$145.6011,308
2009-07-31$147.20$147.205,313
2009-07-30$150.40$150.404,741
2009-07-29$147.20$147.2011,038
2009-07-28$161.60$161.609,008
2009-07-27$153.60$153.604,864
2009-07-24$155.20$155.202,773
2009-07-23$156.80$156.8011,303
2009-07-22$158.40$158.403,981
2009-07-21$155.20$155.202,604
2009-07-20$161.60$161.605,241
2009-07-17$164.80$164.805,774
2009-07-16$163.20$163.205,436
2009-07-15$168.00$168.0011,537
2009-07-14$158.40$158.406,114
2009-07-13$147.20$147.205,133
2009-07-10$132.80$132.802,525
2009-07-09$131.20$131.204,159
2009-07-08$139.20$139.206,680
2009-07-07$140.80$140.803,088
2009-07-06$142.40$142.404,346
2009-07-02$145.60$145.605,289
2009-07-01$156.80$156.8015,896
2009-06-30$132.80$132.804,273
2009-06-29$136.00$136.003,834
2009-06-26$126.40$126.4017,073
2009-06-25$140.80$140.802,735
2009-06-24$129.60$129.603,634
2009-06-23$128.00$128.003,300
2009-06-22$128.00$128.004,390
2009-06-19$136.00$136.006,266
2009-06-18$132.80$132.806,639
2009-06-17$137.60$137.604,364
2009-06-16$147.20$147.204,294
2009-06-15$150.40$150.406,673
2009-06-12$152.00$152.005,508
2009-06-11$147.20$147.207,399
2009-06-10$142.40$142.409,538
2009-06-09$144.00$144.0016,456
2009-06-08$137.60$137.6013,396
2009-06-05$153.60$153.606,413
2009-06-04$152.00$152.0010,868
2009-06-03$145.60$145.6017,127
2009-06-02$153.60$153.6051,593
2009-06-01$187.20$187.209,753
2009-05-29$184.00$184.007,073
2009-05-28$180.80$180.806,316
2009-05-27$188.80$188.805,826
2009-05-26$195.20$195.205,135
2009-05-22$195.20$195.206,550
2009-05-21$198.40$198.4011,549
2009-05-20$188.80$188.8012,503
2009-05-19$174.40$174.407,144
2009-05-18$169.60$169.608,323
2009-05-15$163.20$163.2010,702
2009-05-14$163.20$163.209,045
2009-05-13$152.00$152.0026,363
2009-05-12$171.20$171.2011,606
2009-05-11$168.00$168.0013,203
2009-05-08$174.40$174.4015,291
2009-05-07$168.00$168.0014,121
2009-05-06$164.80$164.8015,022
2009-05-05$166.40$166.4011,756
2009-05-04$171.20$171.2016,343
2009-05-01$172.80$172.8016,986
2009-04-30$168.00$168.0066,066
2009-04-29$209.60$209.6017,237
2009-04-28$206.40$206.4012,016
2009-04-27$200.00$200.0014,775
2009-04-24$208.00$208.0013,179
2009-04-23$206.40$206.4014,528
2009-04-22$212.80$212.8016,568
2009-04-21$211.20$211.2026,101
2009-04-20$198.40$198.4047,111
2009-04-17$201.60$201.6070,111
2009-04-16$163.20$163.2068,812
2009-04-15$120.00$120.008,783
2009-04-14$110.40$110.4011,228
2009-04-13$121.60$121.603,312
2009-04-09$124.80$124.8020,302
2009-04-08$112.00$112.0010,638
2009-04-07$110.40$110.4013,991
2009-04-06$120.00$120.007,746
2009-04-03$128.00$128.0010,670
2009-04-02$121.60$121.6012,992
2009-04-01$123.20$123.208,431
2009-03-31$107.20$107.209,396
2009-03-30$104.00$104.0019,625
2009-03-27$123.20$123.2064,534
2009-03-26$64.00$64.005,624
2009-03-25$60.80$60.805,691
2009-03-24$57.60$57.603,648
2009-03-23$64.00$64.006,943
2009-03-20$56.00$56.006,955
2009-03-19$65.60$65.603,176
2009-03-18$72.00$72.006,249
2009-03-17$62.40$62.403,305
2009-03-16$57.60$57.604,509
2009-03-13$59.20$59.204,183
2009-03-12$59.20$59.206,421
2009-03-11$56.00$56.005,061
2009-03-10$59.20$59.208,924
2009-03-09$60.80$60.803,720
2009-03-06$65.60$65.609,054
2009-03-05$52.80$52.804,016
2009-03-04$59.20$59.205,579
2009-03-03$48.00$48.004,782
2009-03-02$52.80$52.8010,926
2009-02-27$59.20$59.205,834
2009-02-26$67.20$67.206,986
2009-02-25$72.00$72.004,177
2009-02-24$83.20$83.208,498
2009-02-23$72.00$72.006,611
2009-02-20$75.20$75.208,537
2009-02-19$86.40$86.407,788
2009-02-18$86.40$86.406,398
2009-02-17$92.80$92.804,059
2009-02-13$105.60$105.609,801
2009-02-12$107.20$107.207,107
2009-02-11$105.60$105.604,651
2009-02-10$107.20$107.2012,740
2009-02-09$105.60$105.607,363
2009-02-06$96.00$96.007,749
2009-02-05$88.00$88.0011,709
2009-02-04$83.20$83.209,569
2009-02-03$86.40$86.4016,547
2009-02-02$96.00$96.0018,239
2009-01-30$81.60$81.6026,713
2009-01-29$59.20$59.206,969
2009-01-28$65.60$65.6011,926
2009-01-27$56.00$56.007,746
2009-01-26$52.80$52.8010,289
2009-01-23$44.80$44.8011,703
2009-01-22$49.60$49.602,316
2009-01-21$56.00$56.004,389
2009-01-20$46.40$46.405,104
2009-01-16$57.60$57.604,264
2009-01-15$49.60$49.606,159
2009-01-14$48.00$48.009,418
2009-01-13$51.20$51.208,496
2009-01-12$56.00$56.008,044
2009-01-09$67.20$67.2010,728
2009-01-08$75.20$75.203,260
2009-01-07$76.80$76.808,514
2009-01-06$89.60$89.6011,926
2009-01-05$80.00$80.006,328
2009-01-02$73.60$73.6012,395