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 — 1999

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1999-12-31$2,420.00$2,420.003,143
1999-12-30$2,360.00$2,360.004,674
1999-12-29$2,250.00$2,250.003,547
1999-12-28$2,270.00$2,270.005,244
1999-12-27$2,310.00$2,310.004,543
1999-12-23$2,290.00$2,290.007,881
1999-12-22$2,240.00$2,240.006,828
1999-12-21$2,240.00$2,240.006,509
1999-12-20$2,160.00$2,160.008,734
1999-12-17$2,240.00$2,240.005,103
1999-12-16$2,260.00$2,260.006,203
1999-12-15$2,210.00$2,210.0010,943
1999-12-14$2,230.00$2,230.006,390
1999-12-13$2,390.00$2,390.005,391
1999-12-10$2,360.00$2,360.006,081
1999-12-09$2,340.00$2,340.004,882
1999-12-08$2,520.00$2,520.004,156
1999-12-07$2,510.00$2,510.003,185
1999-12-06$2,580.00$2,580.003,538
1999-12-03$2,620.00$2,620.004,171
1999-12-02$2,600.00$2,600.002,798
1999-12-01$2,590.00$2,590.003,667
1999-11-30$2,520.00$2,520.003,783
1999-11-29$2,730.00$2,730.003,585
1999-11-26$2,770.00$2,770.001,409
1999-11-24$2,790.00$2,790.001,860
1999-11-23$2,820.00$2,820.003,420
1999-11-22$2,940.00$2,940.006,355
1999-11-19$2,920.00$2,920.006,682
1999-11-18$2,850.00$2,850.007,417
1999-11-17$2,970.00$2,970.009,352
1999-11-16$2,810.00$2,810.009,560
1999-11-15$2,600.00$2,600.005,232
1999-11-12$2,540.00$2,540.002,844
1999-11-11$2,440.00$2,440.004,687
1999-11-10$2,480.00$2,480.006,405
1999-11-09$2,480.00$2,480.006,016
1999-11-08$2,400.00$2,400.004,091
1999-11-05$2,260.00$2,260.005,491
1999-11-04$2,380.00$2,380.003,832
1999-11-03$2,400.00$2,400.005,503
1999-11-02$2,480.00$2,480.003,473
1999-11-01$2,520.00$2,520.006,229
1999-10-29$2,470.00$2,470.006,601
1999-10-28$2,370.00$2,370.004,686
1999-10-27$2,220.00$2,220.003,743
1999-10-26$2,160.00$2,160.008,829
1999-10-25$2,310.00$2,310.001,521
1999-10-22$2,350.00$2,350.002,384
1999-10-21$2,300.00$2,300.004,248
1999-10-20$2,380.00$2,380.006,294
1999-10-19$2,340.00$2,340.004,759
1999-10-18$2,260.00$2,260.003,924
1999-10-15$2,250.00$2,250.0024,498
1999-10-14$2,240.00$2,240.007,516
1999-10-13$2,200.00$2,200.0012,525
1999-10-12$2,270.00$2,270.0013,943
1999-10-11$2,170.00$2,170.0014,789
1999-10-08$1,840.00$1,840.0027,288
1999-10-07$2,140.00$2,140.004,688
1999-10-06$2,230.00$2,230.009,993
1999-10-05$2,230.00$2,230.007,724
1999-10-04$2,260.00$2,260.004,297
1999-10-01$2,250.00$2,250.008,598
1999-09-30$2,250.00$2,250.005,918
1999-09-29$2,220.00$2,220.005,076
1999-09-28$2,260.00$2,260.008,380
1999-09-27$2,380.00$2,380.009,946
1999-09-24$2,300.00$2,300.0011,629
1999-09-23$2,420.00$2,420.0015,222
1999-09-22$2,750.00$2,750.004,296
1999-09-21$2,770.00$2,770.009,299
1999-09-20$2,870.00$2,870.009,021
1999-09-17$2,880.00$2,880.008,964
1999-09-16$2,960.00$2,960.003,904
1999-09-15$2,950.00$2,950.004,914
1999-09-14$3,060.00$3,060.005,974
1999-09-13$2,960.00$2,960.003,889
1999-09-10$2,920.00$2,920.004,135
1999-09-09$2,890.00$2,890.005,310
1999-09-08$2,920.00$2,920.004,086
1999-09-07$2,880.00$2,880.005,624
1999-09-03$3,040.00$3,040.005,490
1999-09-02$3,060.00$3,060.004,306
1999-09-01$3,000.00$3,000.003,920
1999-08-31$2,930.00$2,930.0010,218
1999-08-30$2,860.00$2,860.005,811
1999-08-27$3,090.00$3,090.003,003
1999-08-26$3,130.00$3,130.002,035
1999-08-25$3,160.00$3,160.005,346
1999-08-24$3,160.00$3,160.006,607
1999-08-23$3,190.00$3,190.003,329
1999-08-20$3,280.00$3,280.003,847
1999-08-19$3,220.00$3,220.003,084
1999-08-18$3,310.00$3,310.003,695
1999-08-17$3,430.00$3,430.002,689
1999-08-16$3,390.00$3,390.003,281
1999-08-13$3,410.00$3,410.004,081
1999-08-12$3,280.00$3,280.006,307
1999-08-11$3,220.00$3,220.005,133
1999-08-10$3,040.00$3,040.004,454
1999-08-09$3,010.00$3,010.003,561
1999-08-06$3,020.00$3,020.001,985
1999-08-05$2,970.00$2,970.002,912
1999-08-04$3,060.00$3,060.004,359
1999-08-03$3,090.00$3,090.001,984
1999-08-02$3,080.00$3,080.002,120