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 — 2003

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2003-12-31$499.20$499.209,485
2003-12-30$507.20$507.209,571
2003-12-29$507.20$507.203,738
2003-12-26$508.80$508.803,016
2003-12-24$488.00$488.001,159
2003-12-23$491.20$491.204,040
2003-12-22$488.00$488.005,083
2003-12-19$486.40$486.404,923
2003-12-18$475.20$475.205,614
2003-12-17$456.00$456.005,610
2003-12-16$460.80$460.803,412
2003-12-15$467.20$467.207,005
2003-12-12$507.20$507.204,709
2003-12-11$492.80$492.804,173
2003-12-10$465.60$465.602,973
2003-12-09$478.40$478.409,949
2003-12-08$478.40$478.404,239
2003-12-05$473.60$473.604,605
2003-12-04$494.40$494.403,103
2003-12-03$502.40$502.403,996
2003-12-02$507.20$507.204,129
2003-12-01$526.40$526.406,329
2003-11-28$505.60$505.601,411
2003-11-26$496.00$496.005,241
2003-11-25$507.20$507.203,853
2003-11-24$508.80$508.808,659
2003-11-21$496.00$496.008,721
2003-11-20$467.20$467.202,424
2003-11-19$468.80$468.802,539
2003-11-18$462.40$462.402,885
2003-11-17$472.00$472.003,235
2003-11-14$478.40$478.407,492
2003-11-13$476.80$476.807,028
2003-11-12$489.60$489.604,948
2003-11-11$484.80$484.808,618
2003-11-10$481.60$481.604,633
2003-11-07$496.00$496.006,401
2003-11-06$496.00$496.002,394
2003-11-05$496.00$496.002,003
2003-11-04$492.80$492.804,771
2003-11-03$488.00$488.005,519
2003-10-31$497.60$497.603,244
2003-10-30$497.60$497.604,686
2003-10-29$531.20$531.203,058
2003-10-28$520.00$520.002,456
2003-10-27$502.40$502.402,104
2003-10-24$480.00$480.003,586
2003-10-23$480.00$480.004,244
2003-10-22$505.60$505.605,938
2003-10-21$529.60$529.602,333
2003-10-20$528.00$528.001,988
2003-10-17$531.20$531.202,667
2003-10-16$534.40$534.404,894
2003-10-15$547.20$547.2013,958
2003-10-14$542.40$542.404,401
2003-10-13$528.00$528.0012,568
2003-10-10$512.00$512.002,170
2003-10-09$510.40$510.404,629
2003-10-08$516.80$516.804,694
2003-10-07$521.60$521.6014,578
2003-10-06$552.00$552.005,416
2003-10-03$556.80$556.807,553
2003-10-02$536.00$536.003,614
2003-10-01$542.40$542.404,524
2003-09-30$492.80$492.806,763
2003-09-29$515.20$515.205,304
2003-09-26$504.00$504.004,697
2003-09-25$516.80$516.805,706
2003-09-24$537.60$537.608,455
2003-09-23$579.20$579.208,744
2003-09-22$556.80$556.806,313
2003-09-19$566.40$566.4016,509
2003-09-18$553.60$553.6033,177
2003-09-17$496.00$496.0014,883
2003-09-16$491.20$491.207,054
2003-09-15$486.40$486.408,227
2003-09-12$496.00$496.005,166
2003-09-11$494.40$494.4010,685
2003-09-10$492.80$492.806,470
2003-09-09$512.00$512.004,999
2003-09-08$515.20$515.208,438
2003-09-05$502.40$502.4012,437
2003-09-04$489.60$489.603,604
2003-09-03$492.80$492.8018,086
2003-09-02$484.80$484.806,256
2003-08-29$483.20$483.209,401
2003-08-28$483.20$483.2010,994
2003-08-27$465.60$465.604,064
2003-08-26$451.20$451.207,204
2003-08-25$451.20$451.204,035
2003-08-22$464.00$464.004,451
2003-08-21$480.00$480.0011,633
2003-08-20$486.40$486.4014,376
2003-08-19$484.80$484.804,176
2003-08-18$488.00$488.0015,314
2003-08-15$475.20$475.201,862
2003-08-14$468.80$468.803,773
2003-08-13$457.60$457.6010,316
2003-08-12$464.00$464.004,469
2003-08-11$470.40$470.404,851
2003-08-08$464.00$464.004,603
2003-08-07$464.00$464.008,813
2003-08-06$460.80$460.807,868
2003-08-05$448.00$448.0010,854
2003-08-04$456.00$456.004,756
2003-08-01$457.60$457.606,047
2003-07-31$480.00$480.0016,049
2003-07-30$481.60$481.6011,857
2003-07-29$472.00$472.009,689
2003-07-28$481.60$481.6015,113
2003-07-25$510.40$510.4045,599
2003-07-24$515.20$515.2046,693
2003-07-23$619.20$619.202,314
2003-07-22$609.60$609.603,058
2003-07-21$608.00$608.002,242
2003-07-18$641.60$641.601,737
2003-07-17$612.80$612.803,113
2003-07-16$643.20$643.202,184
2003-07-15$649.60$649.602,743
2003-07-14$657.60$657.602,476
2003-07-11$652.80$652.8018,006
2003-07-10$758.40$758.402,863
2003-07-09$772.80$772.803,080
2003-07-08$763.20$763.203,274
2003-07-07$777.60$777.606,230
2003-07-03$651.20$651.201,488
2003-07-02$691.20$691.204,897
2003-07-01$648.00$648.004,128
2003-06-30$648.00$648.006,127
2003-06-27$649.60$649.602,675
2003-06-26$659.20$659.203,412
2003-06-25$633.60$633.603,506
2003-06-24$617.60$617.602,846
2003-06-23$641.60$641.604,909
2003-06-20$732.80$732.802,663
2003-06-19$720.00$720.002,890
2003-06-18$739.20$739.202,351
2003-06-17$742.40$742.402,917
2003-06-16$748.80$748.804,839
2003-06-13$710.40$710.404,199
2003-06-12$707.20$707.202,738
2003-06-11$736.00$736.002,398
2003-06-10$739.20$739.203,430
2003-06-09$720.00$720.002,284
2003-06-06$734.40$734.405,439
2003-06-05$744.00$744.003,823
2003-06-04$776.00$776.008,218
2003-06-03$766.40$766.405,915
2003-06-02$694.40$694.407,728
2003-05-30$678.40$678.405,978
2003-05-29$657.60$657.605,974
2003-05-28$646.40$646.407,214
2003-05-27$644.80$644.803,076
2003-05-23$603.20$603.201,198
2003-05-22$603.20$603.202,406
2003-05-21$603.20$603.202,250
2003-05-20$603.20$603.203,334
2003-05-19$600.00$600.003,923
2003-05-16$624.00$624.005,736
2003-05-15$638.40$638.403,773
2003-05-14$620.80$620.802,011
2003-05-13$625.60$625.608,307
2003-05-12$600.00$600.002,254
2003-05-09$622.40$622.405,131
2003-05-08$603.20$603.205,871
2003-05-07$601.60$601.603,124
2003-05-06$600.00$600.006,998
2003-05-05$568.00$568.001,851
2003-05-02$556.80$556.802,313
2003-05-01$545.60$545.603,601
2003-04-30$552.00$552.002,073
2003-04-29$547.20$547.207,296
2003-04-28$630.40$630.406,158
2003-04-25$600.00$600.001,949
2003-04-24$619.20$619.201,048
2003-04-23$633.60$633.601,513
2003-04-22$630.40$630.402,506
2003-04-21$611.20$611.202,692
2003-04-17$596.80$596.803,048
2003-04-16$580.80$580.801,518
2003-04-15$584.00$584.002,043
2003-04-14$596.80$596.802,069
2003-04-11$582.40$582.401,619
2003-04-10$600.00$600.001,618
2003-04-09$588.80$588.803,600
2003-04-08$600.00$600.003,001
2003-04-07$609.60$609.604,018
2003-04-04$608.00$608.005,887
2003-04-03$635.20$635.204,184
2003-04-02$635.20$635.208,014
2003-04-01$600.00$600.004,243
2003-03-31$577.60$577.603,594
2003-03-28$609.60$609.608,364
2003-03-27$587.20$587.203,338
2003-03-26$574.40$574.403,781
2003-03-25$580.80$580.802,380
2003-03-24$552.00$552.002,574
2003-03-21$566.40$566.407,759
2003-03-20$545.60$545.602,651
2003-03-19$529.60$529.601,311
2003-03-18$531.20$531.201,921
2003-03-17$518.40$518.402,324
2003-03-14$496.00$496.001,714
2003-03-13$496.00$496.001,937
2003-03-12$499.20$499.202,390
2003-03-11$499.20$499.203,339
2003-03-10$502.40$502.401,620
2003-03-07$510.40$510.401,463
2003-03-06$504.00$504.001,178
2003-03-05$513.60$513.601,171
2003-03-04$516.80$516.801,511
2003-03-03$523.20$523.201,339
2003-02-28$523.20$523.206,685
2003-02-27$520.00$520.001,850
2003-02-26$494.40$494.401,485
2003-02-25$504.00$504.002,007
2003-02-24$497.60$497.604,213
2003-02-21$507.20$507.202,770
2003-02-20$518.40$518.401,989
2003-02-19$536.00$536.001,974
2003-02-18$536.00$536.001,814
2003-02-14$500.80$500.802,757
2003-02-13$521.60$521.6014,109
2003-02-12$492.80$492.802,206
2003-02-11$516.80$516.802,919
2003-02-10$510.40$510.402,731
2003-02-07$465.60$465.601,914
2003-02-06$512.00$512.002,054
2003-02-05$544.00$544.002,422
2003-02-04$532.80$532.801,549
2003-02-03$529.60$529.601,923
2003-01-31$555.20$555.206,103
2003-01-30$531.20$531.207,335
2003-01-29$568.00$568.0013,422
2003-01-28$497.60$497.605,662
2003-01-27$497.60$497.609,718
2003-01-24$520.00$520.007,027
2003-01-23$516.80$516.803,597
2003-01-22$510.40$510.403,821
2003-01-21$520.00$520.001,571
2003-01-17$560.00$560.002,645
2003-01-16$560.00$560.006,291
2003-01-15$606.40$606.405,999
2003-01-14$539.20$539.203,562
2003-01-13$518.40$518.402,348
2003-01-10$529.60$529.601,887
2003-01-09$526.40$526.401,800
2003-01-08$496.00$496.004,596
2003-01-07$504.00$504.003,032
2003-01-06$488.00$488.002,450
2003-01-03$465.60$465.603,489
2003-01-02$480.00$480.001,426