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 — 2018

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2018-12-31$40.00$40.0041,900
2018-12-28$40.80$40.80209,900
2018-12-27$30.00$30.0093,165
2018-12-26$24.20$24.2044,350
2018-12-24$26.60$26.6015,685
2018-12-21$28.40$28.4017,045
2018-12-20$29.60$29.6025,220
2018-12-19$32.20$32.2024,495
2018-12-18$34.40$34.4015,800
2018-12-17$35.40$35.4035,700
2018-12-14$39.80$39.8033,305
2018-12-13$44.00$44.0019,600
2018-12-12$48.20$48.2011,740
2018-12-11$47.00$47.0011,580
2018-12-10$42.20$42.2014,625
2018-12-07$43.60$43.605,980
2018-12-06$46.00$46.0025,305
2018-12-04$45.20$45.2012,735
2018-12-03$47.60$47.6012,575
2018-11-30$47.80$47.8013,130
2018-11-29$48.00$48.0015,755
2018-11-28$49.20$49.2010,895
2018-11-27$49.60$49.604,485
2018-11-26$51.60$51.6026,835
2018-11-23$45.40$45.402,380
2018-11-21$45.60$45.6012,860
2018-11-20$48.00$48.0014,040
2018-11-19$50.00$50.0010,815
2018-11-16$52.40$52.4019,015
2018-11-15$59.40$59.4020,125
2018-11-14$54.20$54.2016,550
2018-11-13$49.80$49.8011,770
2018-11-12$55.20$55.2011,235
2018-11-09$57.00$57.0020,725
2018-11-08$53.40$53.4023,655
2018-11-07$46.00$46.007,420
2018-11-06$46.00$46.0010,725
2018-11-05$46.60$46.6014,040
2018-11-02$46.20$46.2029,110
2018-11-01$45.60$45.6019,570
2018-10-31$46.00$46.0010,620
2018-10-30$47.80$47.8012,480
2018-10-29$48.40$48.404,180
2018-10-26$50.00$50.004,080
2018-10-25$49.20$49.203,955
2018-10-24$48.20$48.206,015
2018-10-23$48.80$48.8010,205
2018-10-22$49.00$49.007,565
2018-10-19$50.00$50.007,480
2018-10-18$51.20$51.205,360
2018-10-17$51.60$51.608,265
2018-10-16$53.80$53.8022,465
2018-10-15$52.80$52.8017,530
2018-10-12$51.40$51.4012,585
2018-10-11$51.80$51.8010,355
2018-10-10$53.00$53.0014,230
2018-10-09$49.40$49.409,710
2018-10-08$46.60$46.603,040
2018-10-05$45.00$45.003,995
2018-10-04$45.00$45.0010,865
2018-10-03$43.80$43.807,735
2018-10-02$43.20$43.203,860
2018-10-01$44.20$44.205,150
2018-09-28$48.00$48.006,895
2018-09-27$47.40$47.407,635
2018-09-26$49.20$49.2027,535
2018-09-25$51.60$51.606,905
2018-09-24$51.60$51.6011,495
2018-09-21$50.60$50.6035,415
2018-09-20$50.20$50.2018,820
2018-09-19$48.20$48.2018,680
2018-09-18$48.00$48.0021,355
2018-09-17$46.20$46.2093,090
2018-09-14$40.20$40.204,200
2018-09-13$40.00$40.003,970
2018-09-12$40.80$40.803,075
2018-09-11$40.20$40.204,785
2018-09-10$41.80$41.805,055
2018-09-07$42.20$42.208,265
2018-09-06$42.20$42.207,835
2018-09-05$41.20$41.208,985
2018-09-04$39.40$39.408,780
2018-08-31$40.40$40.4010,835
2018-08-30$39.20$39.2095,610
2018-08-29$49.40$49.4025,125
2018-08-28$46.00$46.0020,290
2018-08-27$46.00$46.008,525
2018-08-24$45.80$45.8023,610
2018-08-23$47.00$47.0022,150
2018-08-22$43.20$43.2018,380
2018-08-21$40.60$40.609,955
2018-08-20$40.00$40.0013,215
2018-08-17$37.80$37.804,430
2018-08-16$37.20$37.205,605
2018-08-15$35.20$35.201,980
2018-08-14$36.20$36.204,485
2018-08-13$35.40$35.404,890
2018-08-10$34.80$34.805,685
2018-08-09$36.60$36.608,030
2018-08-08$37.20$37.2010,635
2018-08-07$35.20$35.206,690
2018-08-06$32.60$32.605,595
2018-08-03$35.00$35.007,555
2018-08-02$35.80$35.808,100
2018-08-01$34.80$34.8012,300
2018-07-31$34.00$34.0015,975
2018-07-30$34.80$34.8014,200
2018-07-27$33.60$33.6022,110
2018-07-26$36.20$36.2014,215
2018-07-25$35.80$35.8017,050
2018-07-24$39.00$39.008,260
2018-07-23$39.00$39.0011,715
2018-07-20$38.20$38.206,045
2018-07-19$38.20$38.2011,385
2018-07-18$38.00$38.009,955
2018-07-17$36.20$36.209,285
2018-07-16$37.60$37.609,335
2018-07-13$38.80$38.8022,000
2018-07-12$39.40$39.4014,550
2018-07-11$40.60$40.608,655
2018-07-10$42.40$42.407,795
2018-07-09$43.00$43.006,275
2018-07-06$42.40$42.4017,785
2018-07-05$42.20$42.2014,415
2018-07-03$40.40$40.4021,660
2018-07-02$41.60$41.6020,625
2018-06-29$44.00$44.0023,115
2018-06-28$41.40$41.4017,745
2018-06-27$42.80$42.8027,780
2018-06-26$46.40$46.4058,860
2018-06-25$41.40$41.40135,730
2018-06-22$41.20$41.20363,235
2018-06-21$47.00$47.0035,225
2018-06-20$53.40$53.4016,150
2018-06-19$55.40$55.4017,550
2018-06-18$55.80$55.8010,380
2018-06-15$58.00$58.0022,855
2018-06-14$56.60$56.6012,435
2018-06-13$59.40$59.406,530
2018-06-12$59.80$59.808,340
2018-06-11$61.20$61.2010,855
2018-06-08$62.00$62.008,710
2018-06-07$59.80$59.8016,295
2018-06-06$61.20$61.2011,310
2018-06-05$61.00$61.0015,735
2018-06-04$61.00$61.0013,950
2018-06-01$60.80$60.8016,830
2018-05-31$60.40$60.4054,725
2018-05-30$68.60$68.606,250
2018-05-29$69.00$69.003,480
2018-05-25$67.40$67.407,685
2018-05-24$66.20$66.2012,375
2018-05-23$66.40$66.4015,070
2018-05-22$72.80$72.809,285
2018-05-21$72.80$72.807,185
2018-05-18$73.60$73.6011,535
2018-05-17$73.20$73.207,825
2018-05-16$74.80$74.809,170
2018-05-15$74.40$74.407,685
2018-05-14$75.20$75.204,330
2018-05-11$74.60$74.606,985
2018-05-10$78.00$78.007,490
2018-05-09$78.00$78.0011,000
2018-05-08$74.40$74.408,830
2018-05-07$75.80$75.806,170
2018-05-04$75.20$75.2010,430
2018-05-03$75.20$75.2011,515
2018-05-02$78.80$78.8013,515
2018-05-01$78.60$78.606,000
2018-04-30$78.40$78.407,815
2018-04-27$78.40$78.406,365
2018-04-26$77.00$77.005,060
2018-04-25$78.20$78.2016,915
2018-04-24$78.80$78.8012,680
2018-04-23$80.80$80.8021,315
2018-04-20$78.80$78.807,200
2018-04-19$77.40$77.404,275
2018-04-18$76.40$76.409,065
2018-04-17$74.60$74.608,690
2018-04-16$73.00$73.007,255
2018-04-13$72.00$72.004,525
2018-04-12$72.20$72.206,645
2018-04-11$71.60$71.6010,015
2018-04-10$69.40$69.4011,535
2018-04-09$70.40$70.409,245
2018-04-06$68.20$68.209,885
2018-04-05$72.20$72.204,895
2018-04-04$73.20$73.2011,740
2018-04-03$70.40$70.4013,370
2018-04-02$70.00$70.0018,985
2018-03-29$72.80$72.8015,100
2018-03-28$72.40$72.4014,185
2018-03-27$75.40$75.409,250
2018-03-26$76.80$76.8013,500
2018-03-23$77.80$77.8010,365
2018-03-22$80.80$80.808,645
2018-03-21$81.80$81.806,770
2018-03-20$81.80$81.808,175
2018-03-19$83.60$83.605,045
2018-03-16$84.00$84.0012,325
2018-03-15$82.00$82.005,755
2018-03-14$83.00$83.007,320
2018-03-13$84.80$84.8011,975
2018-03-12$82.60$82.605,990
2018-03-09$82.60$82.6011,180
2018-03-08$82.40$82.408,560
2018-03-07$83.00$83.0011,460
2018-03-06$80.60$80.6012,100
2018-03-05$75.80$75.8011,545
2018-03-02$78.20$78.2015,975
2018-03-01$76.20$76.2012,160
2018-02-28$73.20$73.2014,010
2018-02-27$75.20$75.2011,170
2018-02-26$77.20$77.2017,700
2018-02-23$77.00$77.006,140
2018-02-22$78.80$78.8010,365
2018-02-21$78.60$78.608,445
2018-02-20$80.80$80.8011,945
2018-02-16$83.40$83.4023,915
2018-02-15$82.00$82.0013,955
2018-02-14$79.80$79.8015,920
2018-02-13$80.20$80.2024,530
2018-02-12$78.20$78.2035,815
2018-02-09$80.80$80.8051,935
2018-02-08$78.00$78.00145,865
2018-02-07$111.40$111.4018,930
2018-02-06$112.20$112.2018,830
2018-02-05$110.00$110.0020,675
2018-02-02$121.40$121.4021,630
2018-02-01$124.00$124.0011,045
2018-01-31$123.80$123.8013,050
2018-01-30$124.20$124.2013,200
2018-01-29$125.80$125.8012,455
2018-01-26$127.40$127.4013,355
2018-01-25$126.40$126.407,995
2018-01-24$126.40$126.4015,245
2018-01-23$125.20$125.2010,940
2018-01-22$126.60$126.6019,715
2018-01-19$128.00$128.0016,935
2018-01-18$121.20$121.209,400
2018-01-17$121.40$121.4015,330
2018-01-16$121.40$121.4013,505
2018-01-12$122.80$122.8018,690
2018-01-11$119.80$119.8013,925
2018-01-10$115.20$115.207,925
2018-01-09$116.40$116.4017,815
2018-01-08$119.40$119.4018,370
2018-01-05$123.00$123.0019,250
2018-01-04$122.80$122.8014,080
2018-01-03$124.00$124.0022,605
2018-01-02$118.20$118.2016,895