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 — 2017

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2017-12-29$112.60$112.6014,600
2017-12-28$112.60$112.6014,620
2017-12-27$113.80$113.8014,315
2017-12-26$111.60$111.6010,210
2017-12-22$114.40$114.4012,535
2017-12-21$117.00$117.0021,555
2017-12-20$112.00$112.0014,665
2017-12-19$109.60$109.6019,960
2017-12-18$110.80$110.8011,150
2017-12-15$107.80$107.8015,540
2017-12-14$107.60$107.6020,550
2017-12-13$112.80$112.8020,570
2017-12-12$108.60$108.6030,360
2017-12-11$105.60$105.6016,885
2017-12-08$101.60$101.6022,500
2017-12-07$105.80$105.8020,255
2017-12-06$104.40$104.4025,890
2017-12-05$106.40$106.4017,995
2017-12-04$103.80$103.8034,870
2017-12-01$112.40$112.4060,005
2017-11-30$103.80$103.8026,740
2017-11-29$95.20$95.2017,985
2017-11-28$97.80$97.8017,655
2017-11-27$100.20$100.2013,065
2017-11-24$101.40$101.4010,480
2017-11-22$97.00$97.0029,710
2017-11-21$91.40$91.4042,115
2017-11-20$88.80$88.8020,315
2017-11-17$89.80$89.8049,325
2017-11-16$87.80$87.8033,080
2017-11-15$92.60$92.6045,685
2017-11-14$85.40$85.4037,635
2017-11-13$85.60$85.6072,475
2017-11-10$100.00$100.00155,175
2017-11-09$98.00$98.0019,180
2017-11-08$102.80$102.8010,030
2017-11-07$101.00$101.008,615
2017-11-06$106.00$106.0013,560
2017-11-03$99.00$99.009,505
2017-11-02$102.00$102.009,680
2017-11-01$100.80$100.8020,795
2017-10-31$106.00$106.009,395
2017-10-30$102.60$102.6015,355
2017-10-27$107.00$107.009,275
2017-10-26$109.00$109.009,915
2017-10-25$108.60$108.6011,890
2017-10-24$112.00$112.0019,710
2017-10-23$112.00$112.0014,400
2017-10-20$118.20$118.2010,030
2017-10-19$119.80$119.8013,585
2017-10-18$119.80$119.807,280
2017-10-17$117.80$117.805,215
2017-10-16$117.40$117.4010,435
2017-10-13$116.40$116.408,530
2017-10-12$119.80$119.806,265
2017-10-11$120.60$120.6010,145
2017-10-10$120.40$120.407,420
2017-10-09$118.80$118.8010,875
2017-10-06$121.40$121.409,575
2017-10-05$123.40$123.406,715
2017-10-04$123.00$123.005,010
2017-10-03$122.20$122.208,665
2017-10-02$124.20$124.208,015
2017-09-29$122.40$122.4014,940
2017-09-28$125.80$125.809,560
2017-09-27$128.20$128.2017,955
2017-09-26$126.00$126.0028,070
2017-09-25$125.00$125.0016,190
2017-09-22$123.20$123.2010,055
2017-09-21$118.40$118.4011,405
2017-09-20$114.80$114.8019,615
2017-09-19$116.00$116.0022,065
2017-09-18$118.20$118.2010,825
2017-09-15$118.00$118.0022,905
2017-09-14$118.80$118.805,295
2017-09-13$119.80$119.8017,100
2017-09-12$121.60$121.6012,240
2017-09-11$116.20$116.208,320
2017-09-08$113.20$113.2010,650
2017-09-07$110.20$110.2012,440
2017-09-06$112.00$112.0010,685
2017-09-05$112.00$112.0015,800
2017-09-01$111.20$111.2016,155
2017-08-31$110.20$110.2021,110
2017-08-30$105.80$105.8013,210
2017-08-29$101.20$101.2010,445
2017-08-28$100.40$100.4012,020
2017-08-25$100.00$100.009,740
2017-08-24$100.00$100.009,150
2017-08-23$101.80$101.8010,310
2017-08-22$103.40$103.4012,925
2017-08-21$99.20$99.2018,940
2017-08-18$100.80$100.8018,185
2017-08-17$103.00$103.0028,195
2017-08-16$112.20$112.2016,540
2017-08-15$112.80$112.8027,590
2017-08-14$115.40$115.4044,200
2017-08-11$102.40$102.4040,190
2017-08-10$107.60$107.6091,930
2017-08-09$148.20$148.2011,195
2017-08-08$151.80$151.809,280
2017-08-07$153.60$153.608,265
2017-08-04$156.60$156.6026,575
2017-08-03$162.20$162.208,930
2017-08-02$162.00$162.007,245
2017-08-01$162.60$162.606,460
2017-07-31$162.00$162.007,390
2017-07-28$164.80$164.807,440
2017-07-27$165.20$165.207,435
2017-07-26$166.20$166.205,155
2017-07-25$165.60$165.607,100
2017-07-24$164.00$164.0010,920
2017-07-21$162.00$162.0017,930
2017-07-20$162.20$162.209,050
2017-07-19$164.20$164.2012,820
2017-07-18$172.00$172.0016,785
2017-07-17$169.40$169.4021,820
2017-07-14$168.80$168.8011,305
2017-07-13$166.40$166.4011,350
2017-07-12$168.80$168.8020,405
2017-07-11$169.00$169.0023,755
2017-07-10$164.60$164.6017,040
2017-07-07$163.20$163.2016,535
2017-07-06$162.20$162.2032,360
2017-07-05$161.00$161.0020,200
2017-07-03$160.20$160.209,285
2017-06-30$156.20$156.2016,490
2017-06-29$155.40$155.4016,705
2017-06-28$157.00$157.0016,580
2017-06-27$152.00$152.0020,040
2017-06-26$150.60$150.6026,250
2017-06-23$136.40$136.40156,645
2017-06-22$139.00$139.0019,165
2017-06-21$137.80$137.8028,680
2017-06-20$145.00$145.0010,595
2017-06-19$145.60$145.6013,180
2017-06-16$144.60$144.6010,810
2017-06-15$143.00$143.0024,005
2017-06-14$154.20$154.2011,025
2017-06-13$152.60$152.6011,730
2017-06-12$155.80$155.8015,760
2017-06-09$158.60$158.6021,900
2017-06-08$167.20$167.2012,995
2017-06-07$165.00$165.0015,545
2017-06-06$165.20$165.2012,685
2017-06-05$169.60$169.608,350
2017-06-02$173.40$173.4010,585
2017-06-01$172.80$172.809,755
2017-05-31$169.80$169.808,325
2017-05-30$170.00$170.008,895
2017-05-26$172.60$172.6010,955
2017-05-25$173.00$173.0022,190
2017-05-24$167.00$167.0023,615
2017-05-23$167.00$167.0083,245
2017-05-22$157.80$157.808,170
2017-05-19$158.40$158.409,925
2017-05-18$154.20$154.2011,395
2017-05-17$160.40$160.408,650
2017-05-16$164.20$164.2010,365
2017-05-15$161.20$161.2010,740
2017-05-12$169.60$169.6033,165
2017-05-11$162.80$162.8046,700
2017-05-10$179.40$179.4017,005
2017-05-09$179.20$179.2013,900
2017-05-08$179.00$179.0012,740
2017-05-05$178.60$178.6038,620
2017-05-04$175.60$175.6027,710
2017-05-03$167.60$167.6023,960
2017-05-02$166.80$166.8014,465
2017-05-01$164.00$164.0011,140
2017-04-28$158.60$158.607,685
2017-04-27$158.80$158.8011,695
2017-04-26$161.00$161.0014,045
2017-04-25$158.60$158.6026,500
2017-04-24$148.40$148.4018,390
2017-04-21$145.60$145.6015,195
2017-04-20$144.00$144.0015,645
2017-04-19$141.80$141.8011,785
2017-04-18$137.60$137.605,078
2017-04-17$134.40$134.403,966
2017-04-13$132.80$132.802,971
2017-04-12$132.80$132.804,534
2017-04-11$129.60$129.602,692
2017-04-10$131.20$131.202,306
2017-04-07$129.60$129.608,809
2017-04-06$134.40$134.403,646
2017-04-05$134.40$134.405,115
2017-04-04$137.60$137.609,033
2017-04-03$139.20$139.202,922
2017-03-31$139.20$139.202,785
2017-03-30$137.60$137.602,497
2017-03-29$140.80$140.805,828
2017-03-28$136.00$136.002,699
2017-03-27$134.40$134.402,915
2017-03-24$136.00$136.002,951
2017-03-23$136.00$136.004,498
2017-03-22$132.80$132.809,787
2017-03-21$137.60$137.602,815
2017-03-20$140.80$140.803,447
2017-03-17$136.00$136.0018,772
2017-03-16$140.80$140.802,211
2017-03-15$142.40$142.402,319
2017-03-14$142.40$142.402,863
2017-03-13$144.00$144.002,431
2017-03-10$144.00$144.004,528
2017-03-09$147.20$147.207,385
2017-03-08$152.00$152.009,867
2017-03-07$148.80$148.803,108
2017-03-06$148.80$148.805,894
2017-03-03$153.60$153.6029,254
2017-03-02$144.00$144.006,855
2017-03-01$145.60$145.604,872
2017-02-28$139.20$139.2027,373
2017-02-27$145.60$145.603,059
2017-02-24$144.00$144.003,987
2017-02-23$145.60$145.607,259
2017-02-22$148.80$148.805,120
2017-02-21$147.20$147.206,309
2017-02-17$147.20$147.204,327
2017-02-16$145.60$145.604,396
2017-02-15$147.20$147.201,713
2017-02-14$152.00$152.005,575
2017-02-13$152.00$152.004,213
2017-02-10$150.40$150.402,881
2017-02-09$152.00$152.008,044
2017-02-08$148.80$148.807,749
2017-02-07$144.00$144.004,303
2017-02-06$144.00$144.003,849
2017-02-03$145.60$145.609,291
2017-02-02$152.00$152.004,661
2017-02-01$145.60$145.609,511
2017-01-31$142.40$142.403,481
2017-01-30$142.40$142.405,231
2017-01-27$144.00$144.0012,758
2017-01-26$145.60$145.6021,158
2017-01-25$150.40$150.408,041
2017-01-24$150.40$150.4010,603
2017-01-23$147.20$147.206,379
2017-01-20$145.60$145.609,769
2017-01-19$142.40$142.405,795
2017-01-18$142.40$142.401,816
2017-01-17$142.40$142.403,618
2017-01-13$145.60$145.605,819
2017-01-12$142.40$142.4015,871
2017-01-11$139.20$139.201,681
2017-01-10$139.20$139.201,456
2017-01-09$139.20$139.204,483
2017-01-06$136.00$136.002,581
2017-01-05$140.80$140.803,540
2017-01-04$144.00$144.005,687
2017-01-03$139.20$139.208,498