Quantum Stock Price History
NASDAQ: QMCOTechnologyElectronic ComponentsUSD
30.43+1.25 (+4.27%)
At close: Oct 9, 4:00 PM ET · Delayed 15 min
QMCO price history at a glance
The price history for Quantum (QMCO) on this page begins on August 2, 1999, when the stock closed at $3,020.00; it most recently closed at $30.43 on October 5, 2026. The highest price in this record is $3,480.00, reached on August 16, 1999; the latest close is 99.1% below that peak. Across the 26 complete calendar years in the table, QMCO finished higher in 8 and lower in 18. Its best year was 2024 (+677.6%) and its worst was 2025 (-87.1%).
Over roughly 27 years the share price changed -99.0%, a -15.6% compound annual price return (excluding dividends). In the last 12 months alone, QMCO has gained 177.6%. Prices are split-adjusted closing prices; daily open, high, low, close and volume for the past year are listed below.
Summary generated from market data by MetaCap's automated system. Methodology
Key price levels
- High since 1999
- $3,480.00
- Date of high
- Aug 16, 1999
- Low since 1999
- $2.22
- Date of low
- Sep 2, 2024
- 52-week high
- $35.65
- 52-week low
- $4.19
- Last close
- $30.43
QMCO returns
1 week
-11.81%
1 month
+25.52%
3 months
+203.64%
6 months
+403.73%
Year to date
+371.71%
1 year
+177.60%
3 years
+153.54%
5 years
-72.88%
QMCO price return, excluding dividends.
QMCO annual returns
| Year | Year-end close | Return |
|---|---|---|
| 2026 | 30.43 | +334.64% |
| 2025 | 7.00 | -87.14% |
| 2024 | 54.43 | +677.57% |
| 2023 | 7.00 | -67.89% |
| 2022 | 21.80 | -80.25% |
| 2021 | 110.40 | -9.80% |
| 2020 | 122.40 | -14.41% |
| 2019 | 143.00 | +315.70% |
| 2018 | 34.40 | -69.45% |
| 2017 | 112.60 | -15.21% |
| 2016 | 132.80 | -10.75% |
| 2015 | 148.80 | -45.93% |
| 2014 | 275.20 | +35.43% |
| 2013 | 203.20 | -4.51% |
| 2012 | 212.80 | -44.58% |
| 2011 | 384.00 | -35.48% |
| 2010 | 595.20 | +26.96% |
| 2009 | 468.80 | +536.96% |
| 2008 | 73.60 | -81.60% |
| 2007 | 400.00 | +7.76% |
| 2006 | 371.20 | -23.93% |
| 2005 | 488.00 | +16.41% |
| 2004 | 419.20 | -17.87% |
| 2003 | 510.40 | +9.62% |
| 2002 | 465.60 | -73.38% |
| 2001 | 1,748.80 | -17.51% |
| 2000 | 2,120.00 | -12.40% |
| 1999* | 2,420.00 | -19.87% |
* Partial year: the record begins after the start of 1999; return measured from the first available close.
2026 return is year to date.
QMCO daily prices (past year)
| Date | Open | High | Low | Close | Change |
|---|---|---|---|---|---|
| 29.89 | 30.80 | 28.30 | 30.43 | +4.27% | |
| 30.15 | 32.55 | 28.58 | 29.18 | -6.08% | |
| 32.47 | 33.39 | 30.40 | 31.07 | -7.17% | |
| 34.02 | 35.41 | 33.29 | 33.47 | -1.59% | |
| 34.39 | 35.65 | 33.64 | 34.01 | -1.42% | |
| 30.10 | 35.17 | 29.85 | 34.50 | +8.18% | |
| 33.19 | 34.37 | 31.51 | 31.89 | +0.54% | |
| 32.83 | 33.18 | 31.40 | 31.72 | -3.47% | |
| 32.32 | 34.68 | 31.17 | 32.86 | +4.65% | |
| 31.65 | 32.90 | 31.07 | 31.40 | -0.88% | |
| 30.01 | 33.01 | 29.02 | 31.68 | +7.43% | |
| 25.39 | 32.08 | 25.10 | 29.49 | +13.55% | |
| 25.44 | 29.15 | 24.50 | 25.97 | +1.25% | |
| 26.05 | 26.49 | 24.65 | 25.65 | -1.72% | |
| 26.02 | 26.50 | 25.06 | 26.10 | +4.03% | |
| 24.83 | 25.31 | 24.30 | 25.09 | +0.60% | |
| 24.68 | 26.39 | 24.59 | 24.94 | +4.66% | |
| 23.56 | 24.37 | 22.90 | 23.83 | +2.45% | |
| 22.90 | 24.07 | 22.61 | 23.26 | +1.88% | |
| 22.60 | 24.13 | 21.80 | 22.83 | -3.18% | |
| 23.03 | 23.72 | 22.30 | 23.58 | +2.39% | |
| 23.54 | 24.54 | 22.90 | 23.03 | -4.99% | |
| 24.40 | 25.49 | 24.08 | 24.24 | -0.90% | |
| 24.73 | 25.75 | 24.33 | 24.46 | -1.09% | |
| 24.47 | 25.48 | 23.93 | 24.73 | +1.77% | |
| 22.81 | 24.37 | 21.72 | 24.30 | +6.67% | |
| 24.05 | 24.42 | 22.27 | 22.78 | -5.75% | |
| 23.85 | 24.68 | 23.06 | 24.17 | -0.66% | |
| 21.97 | 24.41 | 21.41 | 24.33 | +9.30% | |
| 23.42 | 23.72 | 21.91 | 22.26 | -5.52% | |
| 23.50 | 23.85 | 22.84 | 23.56 | +1.51% | |
| 22.31 | 23.26 | 21.72 | 23.21 | +3.66% | |
| 21.90 | 22.41 | 21.01 | 22.39 | +3.85% | |
| 21.31 | 21.91 | 20.48 | 21.56 | -3.10% | |
| 20.80 | 22.40 | 19.73 | 22.25 | +8.59% | |
| 21.52 | 21.79 | 19.73 | 20.49 | -5.97% | |
| 23.27 | 23.27 | 21.29 | 21.79 | -7.36% | |
| 23.84 | 26.28 | 23.46 | 23.52 | -5.62% | |
| 24.83 | 25.95 | 23.75 | 24.92 | -4.56% | |
| 24.68 | 27.80 | 24.10 | 26.11 | +5.79% | |
| 21.75 | 24.93 | 21.52 | 24.68 | +12.49% | |
| 20.10 | 22.22 | 20.01 | 21.94 | +13.09% | |
| 14.52 | 19.60 | 13.99 | 19.40 | +64.69% | |
| 12.20 | 12.45 | 11.44 | 11.78 | -2.16% | |
| 11.88 | 12.18 | 11.65 | 12.04 | +3.08% | |
| 11.39 | 12.19 | 11.06 | 11.68 | +0.86% | |
| 11.33 | 11.98 | 11.13 | 11.58 | +1.14% | |
| 10.88 | 11.63 | 10.76 | 11.45 | +8.43% | |
| 10.60 | 11.02 | 10.19 | 10.56 | -0.75% | |
| 11.41 | 12.23 | 10.57 | 10.64 | -5.34% | |
| 11.41 | 11.43 | 10.34 | 11.24 | +7.56% | |
| 11.30 | 12.81 | 10.40 | 10.45 | -7.36% | |
| 10.91 | 11.43 | 9.86 | 11.28 | +2.83% | |
| 11.36 | 11.52 | 10.59 | 10.97 | -1.17% | |
| 11.43 | 11.54 | 10.94 | 11.10 | -3.90% | |
| 11.37 | 12.35 | 11.34 | 11.55 | -0.94% | |
| 11.29 | 12.24 | 11.27 | 11.66 | +1.75% | |
| 11.35 | 11.67 | 11.32 | 11.46 | +4.28% | |
| 10.67 | 11.48 | 10.54 | 10.99 | +3.39% | |
| 9.16 | 10.80 | 9.06 | 10.63 | +10.73% | |
| 10.07 | 10.39 | 9.48 | 9.60 | -6.80% | |
| 10.27 | 11.60 | 10.11 | 10.30 | +2.39% | |
| 9.66 | 10.31 | 9.66 | 10.06 | +4.03% | |
| 9.88 | 10.16 | 9.56 | 9.67 | -3.49% | |
| 10.35 | 10.45 | 9.63 | 10.02 | -3.65% | |
| 10.78 | 10.97 | 10.31 | 10.40 | -1.89% | |
| 9.89 | 10.69 | 9.83 | 10.60 | +4.64% | |
| 10.46 | 10.59 | 9.79 | 10.13 | -3.80% | |
| 10.22 | 10.61 | 9.91 | 10.53 | +3.64% | |
| 11.07 | 11.21 | 9.82 | 10.16 | -7.04% | |
| 10.80 | 11.35 | 10.55 | 10.93 | -0.64% | |
| 11.83 | 11.83 | 10.69 | 11.00 | -7.17% | |
| 11.71 | 12.73 | 11.33 | 11.85 | +1.72% | |
| 11.24 | 11.70 | 9.80 | 11.65 | -9.90% | |
| 14.00 | 14.41 | 12.53 | 12.93 | -3.65% | |
| 13.77 | 14.08 | 12.96 | 13.42 | -2.82% | |
| 13.37 | 14.15 | 13.20 | 13.81 | -1.64% | |
| 15.75 | 16.50 | 13.99 | 14.04 | -10.00% | |
| 15.49 | 16.38 | 15.09 | 15.60 | +4.35% | |
| 14.76 | 15.78 | 13.76 | 14.95 | +3.75% | |
| 13.74 | 16.15 | 13.56 | 14.41 | +3.15% | |
| 15.28 | 16.00 | 13.70 | 13.97 | +1.67% | |
| 13.10 | 14.84 | 12.70 | 13.74 | +5.21% | |
| 12.61 | 13.09 | 11.75 | 13.06 | +3.73% | |
| 12.82 | 14.12 | 12.55 | 12.59 | -3.52% | |
| 12.67 | 14.98 | 11.99 | 13.05 | +4.07% | |
| 13.12 | 13.26 | 11.90 | 12.54 | -1.26% | |
| 15.23 | 15.74 | 12.15 | 12.70 | -19.52% | |
| 14.65 | 18.48 | 14.61 | 15.78 | -1.07% | |
| 12.19 | 16.63 | 12.19 | 15.95 | +27.19% | |
| 10.43 | 13.01 | 10.22 | 12.54 | +19.54% | |
| 9.55 | 10.70 | 9.36 | 10.49 | +8.03% | |
| 9.31 | 9.92 | 9.05 | 9.71 | +4.18% | |
| 8.65 | 9.54 | 8.61 | 9.32 | +5.67% | |
| 8.68 | 8.96 | 8.33 | 8.82 | +1.03% | |
| 9.08 | 9.11 | 8.45 | 8.73 | -3.54% | |
| 9.40 | 10.18 | 9.00 | 9.05 | -3.83% | |
| 8.33 | 9.65 | 8.28 | 9.41 | +15.32% | |
| 7.78 | 8.36 | 7.78 | 8.16 | +5.84% | |
| 7.80 | 7.96 | 7.46 | 7.71 | -3.38% | |
| 8.29 | 8.44 | 7.65 | 7.98 | -4.43% | |
| 8.39 | 8.57 | 8.10 | 8.35 | -5.11% | |
| 8.70 | 9.00 | 8.20 | 8.80 | -0.11% | |
| 8.94 | 9.08 | 8.57 | 8.81 | -1.45% | |
| 9.58 | 9.83 | 8.49 | 8.94 | -8.59% | |
| 9.62 | 10.26 | 9.17 | 9.78 | +1.66% | |
| 9.29 | 9.86 | 8.85 | 9.62 | +5.37% | |
| 9.70 | 9.72 | 8.76 | 9.13 | -8.97% | |
| 9.01 | 10.64 | 9.00 | 10.03 | +21.28% | |
| 7.60 | 8.30 | 7.41 | 8.27 | +9.39% | |
| 7.46 | 7.67 | 7.16 | 7.56 | +0.53% | |
| 7.15 | 7.59 | 7.15 | 7.52 | +5.32% | |
| 6.84 | 7.25 | 6.75 | 7.14 | +4.85% | |
| 6.74 | 6.88 | 6.47 | 6.81 | +1.34% | |
| 6.80 | 6.87 | 6.58 | 6.72 | -2.89% | |
| 7.08 | 7.17 | 6.70 | 6.92 | -3.49% | |
| 7.26 | 7.66 | 7.15 | 7.17 | +1.85% | |
| 7.16 | 7.18 | 6.88 | 7.04 | -1.95% | |
| 7.14 | 7.45 | 7.10 | 7.18 | +3.01% | |
| 7.13 | 7.35 | 6.93 | 6.97 | -3.19% | |
| 7.07 | 7.25 | 7.02 | 7.20 | -1.10% | |
| 7.18 | 7.51 | 7.00 | 7.28 | +2.97% | |
| 7.31 | 7.31 | 6.66 | 7.07 | -2.48% | |
| 7.14 | 7.46 | 6.91 | 7.25 | +4.92% | |
| 6.43 | 7.12 | 6.35 | 6.91 | +7.63% | |
| 5.93 | 6.47 | 5.85 | 6.42 | +6.29% | |
| 5.95 | 6.25 | 5.88 | 6.04 | +2.55% | |
| 5.95 | 6.10 | 5.73 | 5.89 | -3.13% | |
| 6.47 | 6.52 | 5.92 | 6.08 | -0.33% | |
| 5.89 | 6.22 | 5.80 | 6.10 | -0.81% | |
| 5.68 | 6.37 | 5.64 | 6.15 | +8.27% | |
| 4.81 | 5.73 | 4.81 | 5.68 | +12.92% | |
| 4.85 | 5.24 | 4.81 | 5.03 | +5.89% | |
| 4.34 | 4.83 | 4.25 | 4.75 | +10.21% | |
| 4.75 | 4.81 | 4.19 | 4.31 | -7.91% | |
| 5.09 | 5.09 | 4.63 | 4.68 | -10.34% | |
| 5.42 | 5.76 | 5.17 | 5.22 | -7.77% | |
| 5.35 | 5.94 | 5.16 | 5.66 | +10.76% | |
| 5.19 | 5.40 | 5.06 | 5.11 | -2.85% | |
| 5.12 | 5.33 | 5.07 | 5.26 | +5.84% | |
| 5.16 | 5.16 | 4.87 | 4.97 | -4.24% | |
| 5.18 | 5.25 | 4.96 | 5.19 | -2.08% | |
| 5.45 | 5.63 | 5.29 | 5.30 | -3.99% | |
| 5.52 | 5.66 | 5.38 | 5.52 | -0.36% | |
| 5.40 | 5.56 | 5.30 | 5.54 | +4.53% | |
| 5.46 | 5.58 | 5.13 | 5.30 | -2.57% | |
| 5.61 | 5.73 | 5.33 | 5.44 | -5.23% | |
| 5.52 | 5.77 | 5.49 | 5.74 | +3.99% | |
| 5.36 | 5.61 | 5.35 | 5.52 | +2.60% | |
| 4.99 | 5.44 | 4.95 | 5.38 | +4.87% | |
| 4.88 | 5.41 | 4.88 | 5.13 | +0.59% | |
| 4.73 | 5.22 | 4.70 | 5.10 | +6.03% | |
| 4.78 | 4.94 | 4.56 | 4.81 | +3.66% | |
| 5.17 | 5.19 | 4.50 | 4.64 | -12.45% | |
| 5.13 | 5.51 | 5.13 | 5.30 | -3.28% | |
| 5.45 | 5.52 | 5.27 | 5.48 | -3.35% | |
| 5.51 | 5.69 | 5.43 | 5.67 | +4.04% | |
| 5.39 | 5.55 | 5.32 | 5.45 | +1.11% | |
| 5.18 | 5.47 | 5.10 | 5.39 | +2.67% | |
| 5.26 | 5.39 | 5.07 | 5.25 | -2.05% | |
| 5.43 | 5.70 | 5.25 | 5.36 | -3.60% | |
| 5.20 | 5.60 | 5.15 | 5.56 | +1.65% | |
| 6.42 | 6.45 | 5.43 | 5.47 | -2.50% | |
| 5.79 | 5.80 | 5.33 | 5.61 | -2.94% | |
| 5.89 | 5.95 | 5.69 | 5.78 | -0.17% | |
| 6.37 | 6.37 | 5.60 | 5.79 | -8.39% | |
| 6.26 | 6.42 | 5.96 | 6.32 | +2.60% | |
| 5.94 | 6.28 | 5.90 | 6.16 | +3.70% | |
| 5.86 | 6.09 | 5.61 | 5.94 | +0.85% | |
| 5.19 | 5.90 | 5.15 | 5.89 | +18.75% | |
| 5.70 | 5.80 | 4.89 | 4.96 | -14.63% | |
| 6.25 | 6.25 | 5.64 | 5.81 | -6.89% | |
| 6.39 | 6.39 | 6.03 | 6.24 | -0.32% | |
| 6.12 | 6.47 | 6.03 | 6.26 | +0.97% | |
| 6.45 | 6.51 | 6.11 | 6.20 | -5.20% | |
| 6.79 | 6.79 | 6.43 | 6.54 | -3.68% | |
| 6.93 | 7.10 | 6.70 | 6.79 | -2.72% | |
| 6.85 | 7.01 | 6.68 | 6.98 | +1.90% | |
| 7.02 | 7.02 | 6.70 | 6.85 | -2.42% | |
| 7.27 | 7.27 | 7.00 | 7.02 | -3.17% | |
| 7.33 | 7.50 | 7.13 | 7.25 | +0.83% | |
| 7.45 | 7.61 | 6.77 | 7.19 | -2.31% | |
| 7.51 | 7.81 | 7.23 | 7.36 | -6.72% | |
| 8.00 | 8.11 | 7.72 | 7.89 | -0.25% | |
| 8.06 | 8.24 | 7.55 | 7.91 | +5.61% | |
| 7.34 | 7.50 | 7.17 | 7.49 | +2.60% | |
| 7.54 | 7.58 | 7.21 | 7.30 | -2.80% | |
| 7.47 | 7.77 | 7.31 | 7.51 | -0.40% | |
| 7.86 | 7.90 | 7.45 | 7.54 | -2.46% | |
| 7.39 | 7.98 | 7.35 | 7.73 | +3.76% | |
| 7.85 | 7.87 | 7.38 | 7.45 | -6.76% | |
| 7.87 | 8.08 | 7.46 | 7.99 | +4.17% | |
| 7.13 | 8.10 | 7.12 | 7.67 | +9.57% | |
| 6.72 | 7.03 | 6.67 | 7.00 | +8.53% | |
| 6.73 | 6.81 | 6.22 | 6.45 | -4.44% | |
| 6.72 | 6.95 | 6.70 | 6.75 | -0.44% | |
| 6.82 | 7.03 | 6.72 | 6.78 | -2.59% | |
| 7.34 | 7.34 | 6.92 | 6.96 | -5.56% | |
| 7.24 | 7.39 | 7.01 | 7.37 | +1.80% | |
| 7.41 | 7.58 | 7.09 | 7.24 | -2.56% | |
| 7.38 | 7.88 | 7.30 | 7.43 | +1.50% | |
| 7.29 | 7.47 | 7.24 | 7.32 | +0.97% | |
| 7.51 | 7.94 | 7.07 | 7.25 | -2.29% | |
| 7.95 | 8.15 | 7.40 | 7.42 | -6.78% | |
| 7.73 | 8.08 | 7.69 | 7.96 | +2.98% | |
| 9.05 | 9.11 | 7.72 | 7.73 | -14.40% | |
| 9.75 | 9.80 | 8.89 | 9.03 | -7.38% | |
| 9.39 | 10.01 | 9.25 | 9.75 | +2.74% | |
| 9.03 | 9.75 | 8.76 | 9.49 | +4.98% | |
| 8.98 | 9.09 | 8.41 | 9.04 | -0.66% | |
| 8.81 | 9.13 | 8.69 | 9.10 | +4.36% | |
| 8.73 | 8.98 | 8.50 | 8.72 | -0.23% | |
| 8.16 | 8.76 | 8.06 | 8.74 | +5.81% | |
| 7.71 | 8.26 | 7.63 | 8.26 | +6.99% | |
| 7.56 | 7.82 | 7.52 | 7.72 | +2.39% | |
| 7.52 | 7.75 | 7.43 | 7.54 | -3.95% | |
| 7.58 | 7.91 | 7.49 | 7.85 | +4.95% | |
| 6.90 | 7.63 | 6.90 | 7.48 | +7.63% | |
| 6.97 | 7.01 | 6.56 | 6.95 | -0.29% | |
| 7.00 | 7.11 | 6.87 | 6.97 | -0.14% | |
| 7.09 | 7.16 | 6.55 | 6.98 | -4.51% | |
| 7.92 | 8.30 | 7.26 | 7.31 | -4.32% | |
| 7.64 | 7.83 | 7.42 | 7.64 | -0.91% | |
| 7.29 | 7.81 | 7.26 | 7.71 | +4.33% | |
| 7.34 | 8.03 | 7.27 | 7.39 | -6.10% | |
| 7.45 | 8.48 | 7.43 | 7.87 | +11.95% | |
| 7.36 | 7.50 | 6.90 | 7.03 | -8.70% | |
| 7.79 | 7.93 | 7.51 | 7.70 | -2.28% | |
| 8.00 | 8.08 | 7.75 | 7.88 | -3.79% | |
| 8.45 | 8.45 | 7.92 | 8.19 | +0.12% | |
| 7.68 | 8.20 | 7.36 | 8.18 | +1.61% | |
| 8.39 | 8.39 | 7.75 | 8.05 | -1.83% | |
| 8.50 | 8.68 | 8.18 | 8.20 | -3.42% | |
| 8.92 | 9.18 | 8.45 | 8.49 | -9.58% | |
| 9.40 | 9.49 | 8.98 | 9.39 | -0.53% | |
| 9.49 | 9.53 | 9.17 | 9.44 | +0.43% | |
| 9.38 | 9.57 | 9.27 | 9.40 | -2.39% | |
| 10.06 | 10.16 | 9.41 | 9.63 | -4.18% | |
| 10.00 | 10.33 | 9.83 | 10.05 | -0.89% | |
| 10.98 | 11.03 | 10.01 | 10.14 | -3.06% | |
| 10.54 | 11.28 | 10.42 | 10.46 | +2.05% | |
| 10.39 | 10.51 | 9.95 | 10.25 | +9.98% | |
| 9.65 | 9.68 | 8.90 | 9.32 | -5.95% | |
| 10.30 | 10.34 | 9.77 | 9.91 | -4.25% | |
| 10.68 | 10.88 | 10.33 | 10.35 | +0.58% | |
| 10.99 | 11.10 | 10.25 | 10.29 | -7.96% | |
| 12.50 | 12.62 | 11.05 | 11.18 | -10.13% | |
| 13.12 | 13.42 | 11.94 | 12.44 | -1.97% | |
| 11.67 | 13.13 | 11.18 | 12.69 | +7.54% | |
| 11.56 | 12.20 | 11.50 | 11.80 | +7.66% | |
| 12.66 | 13.00 | 10.92 | 10.96 | — |
Prices are adjusted for stock splits. See adjusted closing price for how dividends and splits affect history, and the QMCO chart for longer ranges.