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 — 2020

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2020-12-31$122.40$122.406,090——
2020-12-30$116.00$116.007,350——
2020-12-29$112.80$112.809,485——
2020-12-28$113.20$113.2011,905——
2020-12-24$118.20$118.203,605——
2020-12-23$123.40$123.4011,810——
2020-12-22$126.60$126.606,830——
2020-12-21$131.20$131.2011,560——
2020-12-18$129.40$129.4021,175——
2020-12-17$126.80$126.806,610——
2020-12-16$125.00$125.006,510——
2020-12-15$123.00$123.006,945——
2020-12-14$118.60$118.606,850——
2020-12-11$115.20$115.205,630——
2020-12-10$118.00$118.0015,980——
2020-12-09$108.60$108.605,050——
2020-12-08$107.00$107.0019,625——
2020-12-07$112.60$112.609,515——
2020-12-04$111.20$111.206,415——
2020-12-03$108.40$108.405,750——
2020-12-02$114.40$114.405,275——
2020-12-01$114.80$114.804,870——
2020-11-30$114.60$114.608,335——
2020-11-27$118.80$118.803,260——
2020-11-25$120.80$120.805,590——
2020-11-24$121.20$121.2010,670——
2020-11-23$116.40$116.409,905——
2020-11-20$112.40$112.406,485——
2020-11-19$114.40$114.404,750——
2020-11-18$112.60$112.605,790——
2020-11-17$110.00$110.008,075——
2020-11-16$108.00$108.009,500——
2020-11-13$104.00$104.006,840——
2020-11-12$104.80$104.808,020——
2020-11-11$103.00$103.004,380——
2020-11-10$99.60$99.608,585——
2020-11-09$99.00$99.0012,635——
2020-11-06$93.00$93.001,740——
2020-11-05$95.60$95.603,785——
2020-11-04$92.20$92.203,250——
2020-11-03$92.80$92.804,810——
2020-11-02$89.60$89.604,485——
2020-10-30$83.60$83.6016,090——
2020-10-29$87.60$87.6013,815——
2020-10-28$90.40$90.408,250——
2020-10-27$93.00$93.004,920——
2020-10-26$96.00$96.002,795——
2020-10-23$97.00$97.002,710——
2020-10-22$96.20$96.204,250——
2020-10-21$96.00$96.003,595——
2020-10-20$95.80$95.805,660——
2020-10-19$95.20$95.202,805——
2020-10-16$94.80$94.803,220——
2020-10-15$96.80$96.804,310——
2020-10-14$98.00$98.008,615——
2020-10-13$97.00$97.003,520——
2020-10-12$97.80$97.804,320——
2020-10-09$96.60$96.605,090——
2020-10-08$102.00$102.004,375——
2020-10-07$99.20$99.204,635——
2020-10-06$97.00$97.005,110——
2020-10-05$93.40$93.406,940——
2020-10-02$90.80$90.803,235——
2020-10-01$92.80$92.804,600——
2020-09-30$92.00$92.005,465——
2020-09-29$92.80$92.806,885——
2020-09-28$89.00$89.005,110——
2020-09-25$89.60$89.607,110——
2020-09-24$86.40$86.4017,295——
2020-09-23$83.60$83.6014,585——
2020-09-22$97.80$97.809,620——
2020-09-21$98.80$98.8010,750——
2020-09-18$100.00$100.0024,015——
2020-09-17$107.00$107.006,050——
2020-09-16$109.80$109.803,925——
2020-09-15$111.60$111.607,190——
2020-09-14$108.80$108.804,085——
2020-09-11$104.80$104.803,540——
2020-09-10$105.40$105.404,470——
2020-09-09$106.80$106.804,305——
2020-09-08$102.40$102.408,715——
2020-09-04$106.60$106.608,480——
2020-09-03$107.40$107.409,390——
2020-09-02$115.20$115.209,900——
2020-09-01$106.40$106.406,640——
2020-08-31$109.20$109.2010,210——
2020-08-28$110.00$110.006,750——
2020-08-27$115.20$115.208,015——
2020-08-26$115.60$115.6011,960——
2020-08-25$115.60$115.6010,740——
2020-08-24$112.00$112.0012,405——
2020-08-21$111.00$111.0013,290——
2020-08-20$105.20$105.205,495——
2020-08-19$107.00$107.005,970——
2020-08-18$106.80$106.806,225——
2020-08-17$105.00$105.004,125——
2020-08-14$107.40$107.405,860——
2020-08-13$105.60$105.603,540——
2020-08-12$105.40$105.409,220——
2020-08-11$104.60$104.6010,670——
2020-08-10$107.60$107.6013,250——
2020-08-07$100.80$100.809,915——
2020-08-06$99.80$99.8016,595——
2020-08-05$98.40$98.408,585——
2020-08-04$98.40$98.4017,800——
2020-08-03$91.40$91.409,940——
2020-07-31$87.00$87.007,210——
2020-07-30$88.80$88.807,635——
2020-07-29$91.60$91.605,795——
2020-07-28$90.20$90.205,670——
2020-07-27$92.40$92.407,200——
2020-07-24$89.60$89.608,370——
2020-07-23$90.80$90.808,375——
2020-07-22$91.20$91.202,730——
2020-07-21$90.60$90.606,625——
2020-07-20$90.20$90.2015,760——
2020-07-17$85.80$85.807,205——
2020-07-16$86.60$86.608,575——
2020-07-15$85.00$85.0016,330——
2020-07-14$80.20$80.209,180——
2020-07-13$80.80$80.8020,880——
2020-07-10$82.40$82.4018,605——
2020-07-09$78.60$78.6012,825——
2020-07-08$80.20$80.2010,180——
2020-07-07$77.40$77.408,375——
2020-07-06$80.60$80.609,160——
2020-07-02$81.00$81.0017,000——
2020-07-01$75.40$75.4016,585——
2020-06-30$77.20$77.2017,290——
2020-06-29$78.80$78.8026,385——
2020-06-26$78.60$78.60203,560——
2020-06-25$87.40$87.4039,110——
2020-06-24$96.20$96.2025,280——
2020-06-23$88.00$88.0031,740——
2020-06-22$96.00$96.0016,560——
2020-06-19$94.80$94.8085,655——
2020-06-18$96.40$96.4029,575——
2020-06-17$91.80$91.8023,775——
2020-06-16$84.00$84.0013,730——
2020-06-15$90.60$90.6028,970——
2020-06-12$82.20$82.2010,985——
2020-06-11$79.60$79.6017,750——
2020-06-10$86.00$86.0015,685——
2020-06-09$93.60$93.6017,735——
2020-06-08$93.80$93.8019,170——
2020-06-05$87.80$87.8020,015——
2020-06-04$79.60$79.6011,535——
2020-06-03$83.60$83.6015,885——
2020-06-02$77.40$77.4010,645——
2020-06-01$76.80$76.8011,865——
2020-05-29$72.00$72.0015,510——
2020-05-28$78.40$78.408,935——
2020-05-27$81.20$81.2011,320——
2020-05-26$79.60$79.6012,510——
2020-05-22$79.00$79.0011,045——
2020-05-21$81.20$81.2010,680——
2020-05-20$78.20$78.2013,470——
2020-05-19$73.20$73.209,205——
2020-05-18$74.00$74.0023,165——
2020-05-15$66.80$66.808,955——
2020-05-14$67.00$67.0014,790——
2020-05-13$64.80$64.8017,955——
2020-05-12$74.40$74.4012,175——
2020-05-11$79.40$79.409,690——
2020-05-08$86.80$86.8031,060——
2020-05-07$78.00$78.0012,785——
2020-05-06$76.60$76.6012,695——
2020-05-05$84.60$84.609,775——
2020-05-04$83.00$83.005,645——
2020-05-01$82.20$82.2010,870——
2020-04-30$90.00$90.0015,335——
2020-04-29$83.80$83.809,745——
2020-04-28$79.00$79.009,220——
2020-04-27$80.00$80.007,650——
2020-04-24$80.00$80.0014,235——
2020-04-23$85.00$85.0015,990——
2020-04-22$82.40$82.4014,350——
2020-04-21$77.00$77.007,850——
2020-04-20$78.00$78.007,985——
2020-04-17$76.00$76.006,025——
2020-04-16$78.60$78.607,145——
2020-04-15$76.40$76.407,965——
2020-04-14$75.80$75.8016,495——
2020-04-13$72.00$72.0013,290——
2020-04-09$74.00$74.0016,230——
2020-04-08$67.80$67.8013,185——
2020-04-07$59.80$59.8014,730——
2020-04-06$53.40$53.4029,405——
2020-04-03$57.60$57.6015,480——
2020-04-02$60.00$60.008,300——
2020-04-01$60.00$60.009,550——
2020-03-31$59.00$59.0017,855——
2020-03-30$62.60$62.6010,610——
2020-03-27$57.00$57.0010,395——
2020-03-26$61.20$61.2020,210——
2020-03-25$57.60$57.6016,670——
2020-03-24$54.60$54.6017,135——
2020-03-23$45.00$45.0013,945——
2020-03-20$41.20$41.2022,230——
2020-03-19$40.00$40.0029,700——
2020-03-18$29.60$29.6037,440——
2020-03-17$44.40$44.4021,440——
2020-03-16$45.00$45.0063,450——
2020-03-13$63.00$63.0041,710——
2020-03-12$53.60$53.6031,475——
2020-03-11$68.20$68.2069,260——
2020-03-10$75.00$75.0042,915——
2020-03-09$80.60$80.6028,450——
2020-03-06$95.60$95.606,905——
2020-03-05$97.20$97.206,545——
2020-03-04$106.20$106.205,580——
2020-03-03$106.00$106.005,030——
2020-03-02$105.00$105.0011,455——
2020-02-28$104.20$104.208,915——
2020-02-27$106.40$106.4012,215——
2020-02-26$100.20$100.2020,010——
2020-02-25$102.00$102.006,300——
2020-02-24$105.80$105.807,215——
2020-02-21$111.20$111.2011,205——
2020-02-20$114.40$114.409,850——
2020-02-19$106.40$106.4013,025——
2020-02-18$111.40$111.4011,500——
2020-02-14$116.80$116.806,650——
2020-02-13$119.80$119.807,690——
2020-02-12$124.80$124.8012,240——
2020-02-11$128.60$128.6013,360——
2020-02-10$130.60$130.607,520——
2020-02-07$130.40$130.406,885——
2020-02-06$131.00$131.005,390——
2020-02-05$131.60$131.604,375——
2020-02-04$132.00$132.0015,065——
2020-02-03$130.80$130.805,900——
2020-01-31$138.00$138.006,920——
2020-01-30$140.20$140.2050,775——
2020-01-29$167.00$167.0020,605——
2020-01-28$167.00$167.0023,380——
2020-01-27$165.00$165.0022,665——
2020-01-24$162.40$162.4013,450——
2020-01-23$160.80$160.8037,405——
2020-01-22$150.00$150.0036,160——
2020-01-21$154.80$154.807,590——
2020-01-17$152.00$152.0017,585——
2020-01-16$147.20$147.203,630——
2020-01-15$145.00$145.007,925——
2020-01-14$141.00$141.009,680——
2020-01-13$136.80$136.804,220——
2020-01-10$144.80$144.804,295——
2020-01-09$144.00$144.001,020——
2020-01-08$142.00$142.005,400——
2020-01-07$145.00$145.003,540——
2020-01-06$145.00$145.002,710——
2020-01-03$143.00$143.001,000——
2020-01-02$144.20$144.203,115——