Quantum Biopharma Stock Price History
NASDAQ: QNTMHealth CareBiotechnology: Pharmaceutical PreparationsUSD
2.94-0.17 (-5.47%)
At close: Oct 9, 4:00 PM ET · Delayed 15 min
QNTM price history at a glance
The price history for Quantum Biopharma (QNTM) on this page begins on June 4, 2018, when the stock closed at $1,123.59; it most recently closed at $2.94 on October 5, 2026. The highest price in this record is $11,431.88, reached on September 10, 2018; the latest close is 100.0% below that peak. Across the 7 complete calendar years in the table, QNTM finished higher in 2 and lower in 5. Its best year was 2025 (+74.8%) and its worst was 2024 (-93.3%).
Over roughly 8 years the share price changed -99.7%, a -51.0% compound annual price return (excluding dividends). In the last 12 months alone, QNTM has lost 80.8%. 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 2018
- $11,431.88
- Date of high
- Sep 10, 2018
- Low since 2018
- $2.07
- Date of low
- Mar 9, 2026
- 52-week high
- $16.36
- 52-week low
- $2.07
- Last close
- $2.94
QNTM returns
1 week
-14.53%
1 month
-17.88%
3 months
-11.18%
6 months
-16.60%
Year to date
-59.73%
1 year
-80.80%
3 years
-96.07%
5 years
-96.84%
QNTM price return, excluding dividends.
QNTM annual returns
| Year | Year-end close | Return |
|---|---|---|
| 2026 | 2.94 | -58.06% |
| 2025 | 7.01 | +74.81% |
| 2024 | 4.01 | -93.29% |
| 2023 | 59.80 | +16.75% |
| 2022 | 51.22 | -22.75% |
| 2021 | 66.30 | -34.62% |
| 2020 | 101.40 | -72.29% |
| 2019 | 365.95 | -86.97% |
| 2018* | 2,808.98 | +150.00% |
* Partial year: the record begins after the start of 2018; return measured from the first available close.
2026 return is year to date.
QNTM daily prices (past year)
| Date | Open | High | Low | Close | Change |
|---|---|---|---|---|---|
| 3.11 | 3.11 | 2.94 | 2.94 | -5.47% | |
| 3.10 | 3.23 | 3.10 | 3.11 | -1.11% | |
| 3.07 | 3.16 | 3.02 | 3.15 | +1.78% | |
| 3.34 | 3.39 | 3.05 | 3.09 | -5.50% | |
| 3.40 | 3.49 | 3.25 | 3.27 | -4.94% | |
| 3.38 | 3.47 | 3.32 | 3.44 | +0.44% | |
| 3.56 | 3.66 | 3.40 | 3.43 | -4.86% | |
| 3.72 | 3.80 | 3.53 | 3.60 | -5.76% | |
| 3.95 | 3.96 | 3.71 | 3.82 | -3.54% | |
| 3.86 | 3.99 | 3.67 | 3.96 | +2.86% | |
| 4.00 | 4.00 | 3.80 | 3.85 | -3.75% | |
| 4.00 | 4.30 | 3.82 | 4.00 | +3.09% | |
| 3.65 | 4.34 | 3.65 | 3.88 | +4.86% | |
| 3.66 | 3.90 | 3.60 | 3.70 | +2.49% | |
| 3.65 | 3.82 | 3.52 | 3.61 | -1.37% | |
| 3.69 | 3.83 | 3.62 | 3.66 | -1.61% | |
| 3.63 | 3.88 | 3.63 | 3.72 | +1.92% | |
| 3.48 | 3.69 | 3.39 | 3.65 | +5.49% | |
| 3.43 | 3.50 | 3.25 | 3.46 | 0.00% | |
| 3.22 | 3.59 | 3.14 | 3.46 | +8.12% | |
| 3.32 | 3.39 | 3.20 | 3.20 | -2.74% | |
| 3.54 | 3.60 | 3.08 | 3.29 | -8.10% | |
| 3.34 | 3.74 | 3.33 | 3.58 | +8.81% | |
| 3.28 | 3.37 | 3.06 | 3.29 | +1.54% | |
| 3.01 | 3.27 | 2.99 | 3.24 | +9.83% | |
| 3.10 | 3.19 | 2.91 | 2.95 | -4.22% | |
| 3.07 | 3.14 | 3.00 | 3.08 | +1.32% | |
| 3.14 | 3.23 | 3.02 | 3.04 | -4.10% | |
| 3.02 | 3.23 | 3.02 | 3.17 | +3.09% | |
| 3.15 | 3.21 | 3.07 | 3.08 | -1.76% | |
| 3.08 | 3.24 | 3.03 | 3.13 | +1.95% | |
| 3.28 | 3.37 | 3.06 | 3.07 | -6.40% | |
| 3.36 | 3.43 | 3.12 | 3.28 | +1.23% | |
| 3.44 | 3.45 | 3.13 | 3.24 | -5.81% | |
| 3.49 | 3.58 | 3.35 | 3.44 | 0.00% | |
| 3.52 | 3.52 | 3.36 | 3.44 | -2.27% | |
| 3.61 | 3.85 | 3.27 | 3.52 | +5.39% | |
| 3.68 | 3.73 | 3.23 | 3.34 | -9.24% | |
| 3.98 | 4.20 | 3.47 | 3.68 | -3.16% | |
| 3.34 | 3.95 | 3.31 | 3.80 | +17.65% | |
| 3.43 | 3.47 | 3.11 | 3.23 | -7.18% | |
| 3.60 | 3.67 | 3.37 | 3.48 | -1.97% | |
| 3.52 | 3.84 | 3.47 | 3.55 | +2.60% | |
| 3.40 | 4.08 | 3.24 | 3.46 | +0.29% | |
| 3.29 | 3.70 | 3.22 | 3.45 | +6.81% | |
| 2.90 | 3.25 | 2.81 | 3.23 | +11.38% | |
| 2.92 | 3.00 | 2.77 | 2.90 | +1.05% | |
| 3.00 | 3.05 | 2.66 | 2.87 | -5.90% | |
| 2.96 | 3.12 | 2.88 | 3.05 | +5.54% | |
| 2.95 | 2.96 | 2.77 | 2.89 | +1.76% | |
| 2.83 | 2.98 | 2.83 | 2.84 | +0.35% | |
| 2.96 | 2.98 | 2.73 | 2.83 | -5.67% | |
| 2.97 | 3.15 | 2.90 | 3.00 | +1.01% | |
| 2.95 | 2.99 | 2.84 | 2.97 | -0.67% | |
| 2.86 | 2.99 | 2.78 | 2.99 | +5.28% | |
| 2.81 | 2.95 | 2.70 | 2.84 | -0.35% | |
| 2.96 | 3.04 | 2.82 | 2.85 | -5.63% | |
| 3.04 | 3.12 | 2.96 | 3.02 | -0.66% | |
| 3.19 | 3.27 | 2.99 | 3.04 | -6.17% | |
| 3.31 | 3.40 | 3.21 | 3.24 | -3.86% | |
| 3.38 | 3.49 | 3.34 | 3.37 | -0.88% | |
| 3.41 | 3.50 | 3.33 | 3.40 | -2.58% | |
| 3.49 | 3.55 | 3.40 | 3.49 | -1.13% | |
| 3.33 | 3.63 | 3.33 | 3.53 | +6.65% | |
| 3.39 | 3.48 | 3.23 | 3.31 | -2.93% | |
| 3.23 | 3.48 | 3.23 | 3.41 | +4.28% | |
| 3.31 | 3.36 | 3.11 | 3.27 | -1.51% | |
| 3.42 | 3.43 | 3.28 | 3.32 | -3.49% | |
| 3.54 | 3.67 | 3.38 | 3.44 | -1.99% | |
| 3.37 | 3.59 | 3.37 | 3.51 | +4.46% | |
| 3.62 | 3.71 | 3.21 | 3.36 | -7.18% | |
| 3.65 | 3.73 | 3.53 | 3.62 | -2.16% | |
| 3.81 | 3.89 | 3.60 | 3.70 | -2.63% | |
| 3.93 | 4.01 | 3.64 | 3.80 | -3.31% | |
| 4.00 | 4.14 | 3.85 | 3.93 | +0.51% | |
| 3.83 | 4.40 | 3.81 | 3.91 | +1.56% | |
| 3.50 | 4.06 | 3.50 | 3.85 | +5.19% | |
| 3.70 | 3.84 | 3.54 | 3.66 | -3.68% | |
| 4.15 | 4.15 | 3.70 | 3.80 | -4.28% | |
| 3.67 | 4.22 | 3.62 | 3.97 | +9.07% | |
| 3.70 | 3.72 | 3.52 | 3.64 | -1.62% | |
| 3.81 | 3.94 | 3.66 | 3.70 | -3.39% | |
| 4.04 | 4.10 | 3.78 | 3.83 | -4.25% | |
| 3.86 | 4.13 | 3.71 | 4.00 | +1.78% | |
| 3.84 | 4.25 | 3.84 | 3.93 | +1.03% | |
| 4.08 | 4.10 | 3.59 | 3.89 | -3.95% | |
| 4.30 | 4.58 | 3.90 | 4.05 | -4.93% | |
| 4.49 | 4.49 | 4.02 | 4.26 | -4.91% | |
| 4.76 | 5.08 | 4.18 | 4.48 | -8.20% | |
| 5.42 | 5.45 | 4.70 | 4.88 | -4.50% | |
| 5.05 | 5.24 | 4.70 | 5.11 | -2.67% | |
| 6.70 | 6.71 | 5.25 | 5.25 | -23.47% | |
| 7.11 | 7.24 | 6.65 | 6.86 | -2.28% | |
| 7.56 | 7.62 | 6.43 | 7.02 | -8.12% | |
| 7.10 | 7.83 | 6.62 | 7.64 | +8.37% | |
| 10.51 | 10.81 | 6.56 | 7.05 | -23.70% | |
| 7.80 | 9.30 | 7.21 | 9.24 | +18.31% | |
| 8.10 | 8.25 | 7.45 | 7.81 | 0.00% | |
| 7.23 | 8.24 | 6.70 | 7.81 | +11.57% | |
| 6.58 | 7.18 | 6.35 | 7.00 | +11.64% | |
| 7.45 | 7.69 | 6.07 | 6.27 | -7.93% | |
| 6.78 | 7.40 | 6.60 | 6.81 | -0.87% | |
| 5.55 | 7.25 | 5.46 | 6.87 | +25.59% | |
| 5.19 | 5.70 | 5.08 | 5.47 | +5.19% | |
| 5.09 | 5.34 | 4.89 | 5.20 | +2.77% | |
| 4.79 | 5.34 | 4.60 | 5.06 | +3.69% | |
| 4.93 | 5.01 | 4.70 | 4.88 | -2.59% | |
| 5.25 | 5.41 | 4.85 | 5.01 | -5.11% | |
| 5.17 | 5.54 | 5.17 | 5.28 | -1.49% | |
| 5.23 | 5.59 | 5.15 | 5.36 | +3.08% | |
| 5.52 | 5.73 | 5.02 | 5.20 | -6.31% | |
| 5.73 | 6.16 | 5.39 | 5.55 | -3.14% | |
| 5.65 | 5.90 | 5.00 | 5.73 | +1.42% | |
| 5.43 | 5.70 | 4.62 | 5.65 | +5.21% | |
| 4.36 | 5.60 | 4.36 | 5.37 | +20.67% | |
| 3.65 | 4.98 | 3.61 | 4.45 | +23.27% | |
| 3.26 | 3.65 | 3.18 | 3.61 | +12.46% | |
| 3.34 | 3.37 | 3.11 | 3.21 | -4.18% | |
| 3.53 | 3.90 | 3.20 | 3.35 | -2.62% | |
| 3.20 | 3.94 | 3.15 | 3.44 | +10.26% | |
| 3.15 | 3.20 | 3.05 | 3.12 | 0.00% | |
| 3.24 | 3.32 | 3.05 | 3.12 | -1.58% | |
| 3.12 | 3.33 | 3.07 | 3.17 | +3.26% | |
| 2.97 | 3.26 | 2.97 | 3.07 | +1.66% | |
| 3.36 | 3.44 | 2.80 | 3.02 | -9.99% | |
| 3.51 | 3.68 | 3.26 | 3.36 | -4.82% | |
| 3.26 | 3.68 | 3.25 | 3.53 | +7.80% | |
| 3.67 | 3.76 | 3.18 | 3.27 | -11.14% | |
| 4.01 | 4.12 | 3.60 | 3.68 | -5.15% | |
| 3.61 | 3.99 | 3.53 | 3.88 | +8.38% | |
| 3.92 | 3.95 | 3.54 | 3.58 | -10.05% | |
| 4.45 | 4.60 | 3.87 | 3.98 | -9.75% | |
| 5.08 | 6.21 | 4.40 | 4.41 | -8.70% | |
| 4.22 | 4.86 | 3.81 | 4.83 | +12.85% | |
| 5.05 | 6.47 | 3.95 | 4.28 | -10.27% | |
| 3.71 | 4.98 | 3.51 | 4.77 | +24.54% | |
| 4.20 | 4.41 | 3.60 | 3.83 | -11.95% | |
| 4.77 | 5.65 | 4.21 | 4.35 | -8.03% | |
| 3.04 | 4.83 | 3.01 | 4.73 | +52.58% | |
| 2.21 | 3.35 | 2.18 | 3.10 | +38.39% | |
| 2.32 | 2.38 | 2.20 | 2.24 | -5.08% | |
| 2.31 | 2.40 | 2.31 | 2.36 | -1.67% | |
| 2.37 | 2.46 | 2.33 | 2.40 | +0.21% | |
| 2.41 | 2.42 | 2.28 | 2.40 | +1.48% | |
| 2.47 | 2.48 | 2.32 | 2.36 | -4.84% | |
| 2.47 | 2.61 | 2.35 | 2.48 | -3.13% | |
| 2.23 | 3.20 | 2.11 | 2.56 | +21.90% | |
| 2.94 | 3.05 | 2.07 | 2.10 | -25.00% | |
| 3.36 | 3.51 | 2.80 | 2.80 | -16.67% | |
| 3.40 | 3.48 | 3.32 | 3.36 | -4.00% | |
| 3.53 | 3.75 | 3.45 | 3.50 | -2.51% | |
| 3.80 | 3.80 | 3.53 | 3.59 | -5.53% | |
| 3.76 | 3.90 | 3.65 | 3.80 | +1.33% | |
| 3.60 | 3.80 | 3.57 | 3.75 | +4.17% | |
| 3.50 | 3.65 | 3.41 | 3.60 | +1.41% | |
| 3.55 | 3.76 | 3.51 | 3.55 | -0.84% | |
| 3.77 | 3.83 | 3.55 | 3.58 | -5.54% | |
| 3.81 | 3.86 | 3.73 | 3.79 | -0.52% | |
| 3.53 | 3.84 | 3.53 | 3.81 | +7.63% | |
| 3.65 | 3.73 | 3.52 | 3.54 | -4.07% | |
| 3.72 | 4.00 | 3.63 | 3.69 | -0.81% | |
| 3.72 | 3.78 | 3.65 | 3.72 | +2.20% | |
| 3.65 | 3.80 | 3.51 | 3.64 | -1.89% | |
| 3.70 | 4.00 | 3.63 | 3.71 | +1.92% | |
| 3.66 | 3.85 | 3.62 | 3.64 | -0.27% | |
| 3.85 | 3.98 | 3.65 | 3.65 | -5.19% | |
| 4.00 | 4.04 | 3.80 | 3.85 | -2.53% | |
| 3.93 | 4.04 | 3.91 | 3.95 | +0.25% | |
| 4.01 | 4.05 | 3.80 | 3.94 | -6.19% | |
| 3.96 | 4.29 | 3.90 | 4.20 | +7.14% | |
| 3.88 | 4.15 | 3.75 | 3.92 | -2.00% | |
| 4.05 | 4.29 | 3.86 | 4.00 | -0.74% | |
| 4.24 | 4.30 | 4.00 | 4.03 | -4.95% | |
| 4.60 | 4.60 | 4.07 | 4.24 | -7.42% | |
| 4.90 | 4.98 | 4.50 | 4.58 | -5.95% | |
| 4.85 | 5.05 | 4.63 | 4.87 | -0.81% | |
| 5.20 | 5.29 | 4.80 | 4.91 | -4.66% | |
| 5.37 | 5.47 | 5.08 | 5.15 | -4.45% | |
| 6.18 | 6.18 | 5.25 | 5.39 | -12.78% | |
| 6.30 | 6.47 | 6.01 | 6.18 | -1.90% | |
| 6.60 | 6.77 | 6.05 | 6.30 | -1.87% | |
| 7.00 | 7.21 | 6.25 | 6.42 | -11.08% | |
| 7.00 | 7.29 | 6.93 | 7.22 | +2.41% | |
| 6.96 | 7.18 | 6.87 | 7.05 | +1.29% | |
| 6.90 | 7.05 | 6.85 | 6.96 | -0.71% | |
| 7.10 | 7.34 | 6.94 | 7.01 | -5.65% | |
| 7.10 | 7.50 | 6.86 | 7.43 | +6.75% | |
| 6.94 | 7.22 | 6.93 | 6.96 | +0.43% | |
| 7.45 | 7.46 | 6.91 | 6.93 | -4.55% | |
| 7.34 | 7.60 | 7.22 | 7.26 | -4.47% | |
| 7.00 | 7.65 | 6.91 | 7.60 | +8.42% | |
| 7.10 | 7.30 | 6.86 | 7.01 | -3.04% | |
| 7.00 | 7.50 | 6.86 | 7.23 | +3.14% | |
| 7.00 | 7.14 | 6.50 | 7.01 | -3.97% | |
| 7.00 | 7.88 | 6.90 | 7.30 | -0.41% | |
| 8.00 | 8.09 | 7.05 | 7.33 | -8.83% | |
| 8.30 | 8.40 | 8.00 | 8.04 | -3.13% | |
| 8.62 | 9.00 | 8.03 | 8.30 | -4.49% | |
| 9.29 | 9.29 | 8.63 | 8.69 | -8.14% | |
| 10.75 | 10.81 | 9.34 | 9.46 | -11.51% | |
| 10.38 | 11.49 | 10.05 | 10.69 | +20.25% | |
| 8.80 | 9.00 | 8.45 | 8.89 | +0.79% | |
| 8.89 | 8.90 | 8.35 | 8.82 | +6.52% | |
| 8.79 | 9.17 | 8.11 | 8.28 | -4.28% | |
| 7.70 | 8.70 | 7.70 | 8.65 | +11.61% | |
| 9.41 | 9.68 | 7.52 | 7.75 | -17.38% | |
| 9.94 | 9.98 | 9.20 | 9.38 | -4.67% | |
| 10.33 | 10.94 | 9.47 | 9.84 | -7.26% | |
| 10.98 | 11.00 | 10.51 | 10.61 | -0.19% | |
| 10.01 | 10.70 | 9.86 | 10.63 | +4.94% | |
| 10.10 | 10.19 | 9.51 | 10.13 | +0.90% | |
| 9.65 | 10.17 | 9.56 | 10.04 | +0.40% | |
| 10.00 | 10.08 | 9.43 | 10.00 | +0.10% | |
| 10.00 | 10.50 | 9.22 | 9.99 | +2.99% | |
| 8.20 | 10.02 | 8.01 | 9.70 | +13.19% | |
| 9.91 | 9.91 | 8.29 | 8.57 | -11.65% | |
| 12.00 | 12.42 | 9.45 | 9.70 | -14.99% | |
| 8.70 | 11.76 | 8.70 | 11.41 | +41.92% | |
| 6.27 | 8.04 | 6.05 | 8.04 | +29.68% | |
| 6.23 | 6.45 | 6.03 | 6.20 | +7.64% | |
| 6.20 | 6.50 | 5.57 | 5.76 | -6.95% | |
| 6.52 | 6.80 | 6.10 | 6.19 | -1.90% | |
| 6.99 | 7.20 | 6.11 | 6.31 | -7.07% | |
| 7.07 | 7.25 | 6.50 | 6.79 | -5.83% | |
| 7.36 | 8.36 | 7.18 | 7.21 | -2.04% | |
| 7.58 | 7.64 | 6.83 | 7.36 | -4.29% | |
| 8.22 | 8.49 | 7.51 | 7.69 | -7.68% | |
| 8.51 | 9.12 | 8.11 | 8.33 | -3.31% | |
| 8.06 | 8.96 | 8.06 | 8.62 | +2.68% | |
| 9.00 | 9.20 | 8.31 | 8.39 | -5.84% | |
| 8.04 | 9.02 | 8.03 | 8.91 | +3.73% | |
| 9.00 | 9.05 | 8.03 | 8.59 | -4.56% | |
| 8.98 | 9.50 | 8.92 | 9.00 | +1.01% | |
| 10.00 | 10.00 | 8.55 | 8.91 | -15.30% | |
| 10.74 | 10.74 | 9.33 | 10.52 | -4.97% | |
| 12.21 | 12.46 | 11.00 | 11.07 | -11.72% | |
| 12.51 | 13.37 | 11.50 | 12.54 | -2.41% | |
| 12.96 | 13.88 | 12.75 | 12.85 | -0.85% | |
| 13.35 | 13.75 | 12.75 | 12.96 | -3.50% | |
| 13.95 | 14.85 | 13.30 | 13.43 | -3.38% | |
| 14.75 | 14.86 | 13.82 | 13.90 | -3.74% | |
| 14.27 | 14.50 | 13.60 | 14.44 | +6.02% | |
| 14.52 | 14.55 | 13.01 | 13.62 | -7.16% | |
| 14.30 | 15.00 | 14.12 | 14.67 | +1.80% | |
| 14.31 | 15.13 | 13.81 | 14.41 | +1.77% | |
| 14.24 | 14.48 | 13.70 | 14.16 | -6.04% | |
| 15.14 | 15.50 | 14.73 | 15.07 | -0.53% | |
| 16.16 | 16.36 | 14.80 | 15.15 | -5.25% | |
| 15.29 | 16.33 | 14.82 | 15.99 | +5.27% | |
| 14.43 | 15.52 | 14.43 | 15.19 | +4.69% | |
| 15.30 | 15.94 | 14.50 | 14.51 | -5.23% | |
| 16.00 | 16.00 | 15.11 | 15.31 | — |
Prices are adjusted for stock splits. See adjusted closing price for how dividends and splits affect history, and the QNTM chart for longer ranges.