Quantum-Si Incorporated (QSI)
NASDAQ · Healthcare
Quantum-Si Incorporated Stock Price History
Quantum-Si Incorporated
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Historical daily closing price for Quantum-Si Incorporated since 2020, adjusted for splits and dividends. The latest closing stock price for Quantum-Si Incorporated as of June 11, 2026 is 0.95.
- The all-time high Quantum-Si Incorporated stock closing price was 22.41 on February 18, 2021.
- The Quantum-Si Incorporated 52-week high stock price is 2.63, which is 176.5% above the current share price.
- The Quantum-Si Incorporated 52-week low stock price is 0.71, which is 25.3% below the current share price.
- The average Quantum-Si Incorporated stock price for the last 52 weeks is 1.32.
Annual Close Price
YEAR-END CLOSE · USD
ANNUAL % CHANGE · %
| Year | Average | Year Open | Year High | Year Low | Year Close | Annual % Change |
|---|---|---|---|---|---|---|
| 2026 | 1.00 | 1.16 | 1.31 | 0.71 | 0.95 | -13.52% |
| 2025 | 1.61 | 4.26 | 4.29 | 1.00 | 1.10 | -59.26% |
| 2024 | 1.37 | 2.03 | 3.60 | 0.63 | 2.70 | +34.33% |
| 2023 | 1.87 | 1.84 | 3.89 | 1.15 | 2.01 | +9.84% |
| 2022 | 3.61 | 8.22 | 8.22 | 1.82 | 1.83 | -76.75% |
| 2021 | 9.95 | 10.49 | 22.41 | 5.65 | 7.87 | -22.46% |
| 2020 | 10.07 | 9.88 | 11.50 | 9.88 | 10.15 | — |
Quantum-Si Incorporated Stock Price History — FAQ
Quantum-Si Incorporated (QSI) stock price history — annual and quarterly figures with year-over-year growth and charts.
Where can I see QSI's stock price history history?
The chart and table above show Quantum-Si Incorporated's stock price history by year and by quarter, including the growth rate.