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 — 2021

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2021-12-31$110.40$110.4010,995
2021-12-30$109.20$109.2014,320
2021-12-29$108.00$108.0014,760
2021-12-28$105.80$105.809,875
2021-12-27$109.00$109.0019,340
2021-12-23$103.80$103.8015,125
2021-12-22$101.80$101.8014,855
2021-12-21$102.00$102.0018,685
2021-12-20$99.20$99.2017,565
2021-12-17$101.40$101.4024,805
2021-12-16$102.40$102.4015,715
2021-12-15$104.40$104.4019,415
2021-12-14$103.40$103.4018,000
2021-12-13$106.40$106.4011,060
2021-12-10$112.60$112.608,190
2021-12-09$113.20$113.209,765
2021-12-08$116.60$116.608,145
2021-12-07$116.20$116.2015,230
2021-12-06$109.40$109.4019,525
2021-12-03$109.00$109.0017,750
2021-12-02$115.20$115.2015,435
2021-12-01$106.60$106.6020,620
2021-11-30$109.40$109.4015,220
2021-11-29$112.60$112.6019,265
2021-11-26$115.60$115.6010,895
2021-11-24$122.00$122.008,520
2021-11-23$121.00$121.0013,555
2021-11-22$119.80$119.8011,360
2021-11-19$121.40$121.4010,510
2021-11-18$122.80$122.8014,390
2021-11-17$123.20$123.2010,930
2021-11-16$127.60$127.6011,915
2021-11-15$127.40$127.4012,115
2021-11-12$131.00$131.0015,470
2021-11-11$128.60$128.6019,220
2021-11-10$131.40$131.4023,120
2021-11-09$141.20$141.2013,830
2021-11-08$142.00$142.0013,820
2021-11-05$144.20$144.2017,980
2021-11-04$143.40$143.4050,100
2021-11-03$124.00$124.0015,735
2021-11-02$125.80$125.8017,390
2021-11-01$116.00$116.0010,860
2021-10-29$114.20$114.209,470
2021-10-28$112.20$112.205,790
2021-10-27$107.20$107.206,455
2021-10-26$110.00$110.005,570
2021-10-25$112.20$112.207,620
2021-10-22$109.00$109.0011,065
2021-10-21$115.40$115.407,465
2021-10-20$114.40$114.408,645
2021-10-19$112.20$112.208,905
2021-10-18$108.60$108.6010,870
2021-10-15$112.20$112.2014,325
2021-10-14$107.80$107.8012,120
2021-10-13$104.40$104.405,565
2021-10-12$103.00$103.006,740
2021-10-11$102.00$102.007,800
2021-10-08$103.80$103.8012,010
2021-10-07$105.20$105.2018,605
2021-10-06$102.80$102.809,125
2021-10-05$108.20$108.2014,415
2021-10-04$106.80$106.8010,700
2021-10-01$108.00$108.009,025
2021-09-30$103.60$103.607,285
2021-09-29$104.40$104.4011,275
2021-09-28$106.20$106.207,290
2021-09-27$108.80$108.808,600
2021-09-24$105.20$105.208,095
2021-09-23$105.40$105.408,125
2021-09-22$105.80$105.8016,675
2021-09-21$102.40$102.4018,245
2021-09-20$101.20$101.2014,235
2021-09-17$106.80$106.8047,880
2021-09-16$103.20$103.2016,220
2021-09-15$102.80$102.8013,240
2021-09-14$101.40$101.4011,170
2021-09-13$106.40$106.409,685
2021-09-10$105.20$105.2020,525
2021-09-09$109.20$109.2011,860
2021-09-08$110.20$110.2019,205
2021-09-07$114.20$114.2013,200
2021-09-03$118.80$118.806,870
2021-09-02$120.60$120.609,955
2021-09-01$122.20$122.2012,025
2021-08-31$124.80$124.8010,350
2021-08-30$122.20$122.208,850
2021-08-27$121.80$121.8011,605
2021-08-26$115.60$115.608,295
2021-08-25$113.00$113.0010,020
2021-08-24$112.20$112.209,715
2021-08-23$113.60$113.6015,025
2021-08-20$112.20$112.2031,130
2021-08-19$106.40$106.4017,220
2021-08-18$111.40$111.4015,530
2021-08-17$109.00$109.0025,790
2021-08-16$105.40$105.4019,585
2021-08-13$110.20$110.2015,660
2021-08-12$113.40$113.4018,515
2021-08-11$112.40$112.4028,645
2021-08-10$115.20$115.2041,820
2021-08-09$127.00$127.0012,140
2021-08-06$128.00$128.0012,320
2021-08-05$131.00$131.0012,240
2021-08-04$126.00$126.0010,690
2021-08-03$126.60$126.609,695
2021-08-02$125.80$125.808,355
2021-07-30$124.00$124.0011,700
2021-07-29$124.00$124.0014,340
2021-07-28$126.60$126.607,940
2021-07-27$125.40$125.4010,165
2021-07-26$127.60$127.6012,185
2021-07-23$124.80$124.805,855
2021-07-22$125.00$125.0011,090
2021-07-21$127.40$127.4025,830
2021-07-20$122.60$122.6027,030
2021-07-19$117.80$117.8018,175
2021-07-16$121.40$121.4017,885
2021-07-15$122.20$122.2016,800
2021-07-14$125.20$125.2028,170
2021-07-13$124.60$124.6013,675
2021-07-12$130.40$130.4015,725
2021-07-09$133.60$133.608,965
2021-07-08$130.80$130.8010,185
2021-07-07$133.60$133.6021,165
2021-07-06$135.40$135.4023,430
2021-07-02$138.60$138.6023,035
2021-07-01$141.80$141.8021,105
2021-06-30$137.80$137.8029,405
2021-06-29$135.80$135.8014,255
2021-06-28$138.00$138.0020,945
2021-06-25$141.40$141.40143,965
2021-06-24$137.80$137.8043,755
2021-06-23$143.00$143.0023,370
2021-06-22$149.60$149.6019,060
2021-06-21$157.00$157.0033,685
2021-06-18$152.40$152.4050,960
2021-06-17$155.80$155.8034,035
2021-06-16$156.80$156.8022,300
2021-06-15$157.40$157.4014,245
2021-06-14$155.20$155.2023,675
2021-06-11$150.80$150.8024,775
2021-06-10$143.80$143.8011,480
2021-06-09$142.20$142.2018,190
2021-06-08$145.00$145.0032,770
2021-06-07$142.00$142.0027,235
2021-06-04$140.60$140.6047,830
2021-06-03$141.60$141.6037,750
2021-06-02$149.00$149.0048,690
2021-06-01$154.00$154.0020,630
2021-05-28$150.20$150.2056,345
2021-05-27$163.40$163.4058,375
2021-05-26$176.40$176.4035,175
2021-05-25$177.20$177.2018,090
2021-05-24$180.40$180.4018,240
2021-05-21$180.00$180.0010,475
2021-05-20$180.00$180.009,200
2021-05-19$178.00$178.007,325
2021-05-18$177.40$177.408,910
2021-05-17$179.00$179.005,990
2021-05-14$174.40$174.4011,985
2021-05-13$168.80$168.8022,050
2021-05-12$159.00$159.0014,125
2021-05-11$171.20$171.2012,365
2021-05-10$181.20$181.2025,350
2021-05-07$186.00$186.0035,175
2021-05-06$173.80$173.8015,080
2021-05-05$172.60$172.609,730
2021-05-04$166.80$166.8012,445
2021-05-03$168.20$168.207,445
2021-04-30$170.40$170.4011,210
2021-04-29$170.40$170.408,605
2021-04-28$174.20$174.205,635
2021-04-27$176.60$176.6011,750
2021-04-26$171.60$171.6059,280
2021-04-23$169.00$169.008,670
2021-04-22$164.60$164.6028,490
2021-04-21$157.00$157.0010,435
2021-04-20$154.20$154.2010,195
2021-04-19$156.40$156.4011,460
2021-04-16$159.20$159.205,770
2021-04-15$161.60$161.606,610
2021-04-14$161.80$161.8013,010
2021-04-13$162.40$162.4011,940
2021-04-12$161.20$161.207,615
2021-04-09$166.60$166.609,220
2021-04-08$170.80$170.806,510
2021-04-07$166.60$166.6013,310
2021-04-06$175.00$175.0016,155
2021-04-05$178.00$178.0018,725
2021-04-01$173.00$173.0016,680
2021-03-31$166.60$166.6033,270
2021-03-30$159.60$159.6015,145
2021-03-29$155.00$155.0020,060
2021-03-26$160.80$160.8015,895
2021-03-25$158.00$158.0026,240
2021-03-24$161.00$161.0016,030
2021-03-23$173.00$173.0013,940
2021-03-22$175.40$175.4012,755
2021-03-19$178.20$178.20126,600
2021-03-18$176.40$176.4017,420
2021-03-17$189.00$189.0032,260
2021-03-16$174.60$174.6018,080
2021-03-15$181.40$181.4020,860
2021-03-12$181.20$181.2013,275
2021-03-11$179.00$179.0016,885
2021-03-10$173.40$173.4020,025
2021-03-09$178.00$178.0013,985
2021-03-08$169.40$169.4013,495
2021-03-05$170.40$170.4024,835
2021-03-04$168.00$168.0026,425
2021-03-03$179.00$179.0021,295
2021-03-02$178.20$178.2027,325
2021-03-01$173.80$173.8016,390
2021-02-26$166.80$166.8020,335
2021-02-25$162.00$162.0020,940
2021-02-24$169.60$169.6013,740
2021-02-23$159.40$159.4015,250
2021-02-22$165.20$165.2018,280
2021-02-19$168.00$168.0016,475
2021-02-18$169.60$169.6014,370
2021-02-17$168.00$168.0012,735
2021-02-16$172.80$172.8036,815
2021-02-12$167.20$167.2052,220
2021-02-11$172.00$172.0014,985
2021-02-10$169.80$169.8027,905
2021-02-09$178.80$178.8048,765
2021-02-08$173.60$173.6049,315
2021-02-05$161.00$161.0070,120
2021-02-04$155.00$155.00265,850
2021-02-03$143.20$143.2010,305
2021-02-02$145.20$145.206,005
2021-02-01$144.80$144.805,405
2021-01-29$142.60$142.6013,490
2021-01-28$147.80$147.8020,565
2021-01-27$140.00$140.0010,420
2021-01-26$140.20$140.205,785
2021-01-25$141.80$141.8010,340
2021-01-22$143.20$143.2013,060
2021-01-21$139.80$139.806,190
2021-01-20$141.00$141.008,465
2021-01-19$137.60$137.607,150
2021-01-15$137.60$137.609,270
2021-01-14$136.60$136.607,560
2021-01-13$133.60$133.604,435
2021-01-12$139.40$139.407,165
2021-01-11$136.20$136.206,905
2021-01-08$134.80$134.806,755
2021-01-07$141.20$141.207,655
2021-01-06$142.20$142.2024,485
2021-01-05$138.80$138.8018,445
2021-01-04$127.20$127.2013,260