Nasdaq · QNTM · stock
Quantum Biopharma Ltd. (QNTM) stock price history
Every Nasdaq trading session of Quantum Biopharma Ltd. from Jun 8, 2018 to Sep 28, 2026: 2,087 daily bars, adjusted for splits and dividends, with minute bars from Jul 13, 2026 forward. The full series is served by the API: a free key covers the last year, paid plans the whole history and minute bars.
QNTM adjusted close, 2018 to 2026
- $9,080
- All time high, 2018
- $19.30
- 52 week high, $2.07 low
- 2,087
- Daily sessions since 2018
Last updated Sep 28, 2026, the last stored session. Refreshes after each trading day. Full 2018 to 2026 series and minute bars.
QNTM key facts
- Quantum Biopharma Ltd. (QNTM) closed at $3.96 on Sep 28, 2026 on Nasdaq.
- QNTM's all time high close is $9,080, set on Sep 21, 2018; its all time low close is $2.10 on Mar 11, 2026.
- QNTM's 52 week range is $2.07 to $19.30.
- QNTM returned -75.7% over the year to Sep 28, 2026 and -96.1% over five years.
- Since Jun 8, 2018 QNTM returned -100%, -49.3% a year compounded.
- QNTM's deepest drawdown was -100.0% from Sep 21, 2018 to Mar 11, 2026.
- DataCedar holds 2,087 daily sessions of QNTM history from Jun 8, 2018 and minute bars from Jul 13, 2026, adjusted for splits and dividends, served by the API under a key.
QNTM price chart, 2018 to 2026
QNTM returns
Price return from the last close on or before the window start to Sep 28, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | +28.8% |
| 3 months | +4.2% |
| 6 months | -17.0% |
| Year to date | -46.0% |
| 1 year | -75.7% |
| 3 years | -94.9% |
| 5 years | -96.1% |
| 10 years | n/a |
| Since Jun 8, 2018 | -99.6% |
| Compound annual growth, 8.3 years | -49.3% |
QNTM records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- $9,080 on Sep 21, 2018
- All time low close
- $2.10 on Mar 11, 2026
- 52 week high
- $19.30 on Oct 2, 2025
- 52 week low
- $2.07 on Mar 11, 2026
- Deepest drawdown
- -100.0% from Sep 21, 2018 to Mar 11, 2026, not yet recovered
- Best single session
- +138.4% on Jun 3, 2020
- Worst single session
- -35.0% on Aug 12, 2024
- Volatility, 1 year annualised
- 134.9%
- Sessions closing higher, 1 year
- 40%
- Best calendar year
- 2025, +98%
- Worst calendar year
- 2024, -94%
QNTM price history by year
Open is the first session's open, high and low span the year, close is the last session's close, and the return is close over the previous year's close. 2018 starts on Jun 8, 2018; 2026 runs to Sep 28, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | $7.00 | $10.81 | $2.07 | $3.96 | -45.8% | 52.9M | 185 |
| 2025 | $3.80 | $38.25 | $2.89 | $7.30 | +98.4% | 203.8M | 250 |
| 2024 | $60.13 | $70.85 | $2.70 | $3.68 | -93.8% | 41.6M | 252 |
| 2023 | $49.85 | $136.50 | $49.60 | $59.80 | +16.8% | 560.5K | 250 |
| 2022 | $69.55 | $72.15 | $40.17 | $51.22 | -22.7% | 372.2K | 251 |
| 2021 | $104.65 | $288.60 | $59.80 | $66.30 | -34.6% | 5M | 252 |
| 2020 | $363.80 | $910.00 | $83.20 | $101.40 | -71.3% | 1.9M | 253 |
| 2019 | $2,678 | $4,468 | $223.01 | $352.89 | -87.4% | 9.8K | 252 |
| 2018 | $1,137 | $11,432 | $888.42 | $2,796 | n/a | 7.4K | 142 |
QNTM monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | $3.96 | +24.9% |
| August 2026 | $3.17 | +9.7% |
| July 2026 | $2.89 | -20.2% |
| June 2026 | $3.62 | -47.2% |
| May 2026 | $6.86 | +19.7% |
| April 2026 | $5.73 | +18.6% |
| March 2026 | $4.83 | +36.1% |
| February 2026 | $3.55 | -22.5% |
| January 2026 | $4.58 | -37.3% |
| December 2025 | $7.30 | -24.7% |
| November 2025 | $9.70 | -12.4% |
| October 2025 | $11.07 | -32.5% |
About the QNTM data
Daily bars. 2,087 sessions from Jun 8, 2018 to Sep 28, 2026, one row per Nasdaq trading day with open, high, low, close and volume. Prices are adjusted for splits and cash dividends so the series is comparable across its whole length; the API also serves the raw, split only and dividend only views.
Minute bars. Stored from Jul 13, 2026 forward, most recent session Sep 28, 2026. Minute history is captured from the day collection began and is never backfilled, so this start date is exact. Five minute, fifteen minute and hourly bars are derived from these minutes.
Time and currency. Session dates are Nasdaq trading days; minute timestamps are UTC. Prices are in USD. Volume is shares traded on the session.
Get the data. The REST endpoint returns the daily series as JSON with pagination; a free key serves the last year, Quant and above the full history back to Jun 8, 2018, and minute bars come with the paid windows. It takes timeframe (1Min, 5Min, 15Min, 1Hour, 1Day), adjustment, start and end. See the bars endpoint and authentication, and pricing for the plan windows.
curl "https://api.datacedar.com/v3/stocks/QNTM/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on Nasdaq
Common questions
QNTM share price history
