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1.90
14.37%
0.23
Quantum Si Incorporated Stock (QSI) Price History
The historical daily chart and data for Quantum Si Incorporated stock (QSI), show that the latest closing stock price as of October 13, 2025, is $1.90.
- Quantum Si Incorporated all-time high stock price is $10.15, occurred on September 01, 2021.
- The lowest Quantum Si Incorporated stock price recorded was $0.6121 on November 19, 2024. Since then, Quantum Si Incorporated's stock price has risen over 210.41% to $1.90 now.
- The 52-week high stock price for QSI is $5.77, representing a 203.68% increase from the current share price, occurred on January 03, 2025.
- The 52-week low stock price for QSI is $0.6121, indicating a -67.78% decrease from the current share price, occurred on November 19, 2024.
- The closing price of Quantum Si Incorporated (QSI) stock in the beginning of 2024 was $8.2201. The stock closed the year at $1.83, a loss of over -77.74% for the year.
The table below shows more information about QSI historical price data:
Daily
Weekly
Monthly
7D
30D
60D
YTD
1Y
| Date | High | Low | High - Low | Volume | % Change |
|---|---|---|---|---|---|
| Oct 13, 2025 | $1.93 | $1.73 | $0.20 | 7,065,358.0 | +13.90% |
| Oct 10, 2025 | $1.95 | $1.66 | $0.29 | 21,181,528.0 | -4.02% |
| Oct 09, 2025 | $1.80 | $1.69 | $0.11 | 6,757,386.0 | -1.69% |
| Oct 08, 2025 | $1.82 | $1.70 | $0.12 | 8,737,158.0 | +0.00% |
| Oct 07, 2025 | $1.92 | $1.68 | $0.24 | 18,063,126.0 | -2.21% |
| Oct 06, 2025 | $1.87 | $1.66 | $0.21 | 17,007,211.0 | +5.23% |
| Oct 03, 2025 | $1.76 | $1.56 | $0.20 | 19,131,491.0 | +11.69% |
| Oct 02, 2025 | $1.56 | $1.46 | $0.10 | 7,899,576.0 | +5.48% |
| Oct 01, 2025 | $1.50 | $1.41 | $0.09 | 5,436,486.0 | +3.55% |
| Sep 30, 2025 | $1.44 | $1.35 | $0.09 | 5,672,950.0 | +1.44% |
| Sep 29, 2025 | $1.43 | $1.35 | $0.075 | 9,384,631.0 | -6.71% |
| Sep 26, 2025 | $1.61 | $1.47 | $0.14 | 6,620,092.0 | -1.32% |
| Sep 25, 2025 | $1.55 | $1.44 | $0.11 | 10,608,892.0 | -6.21% |
| Sep 24, 2025 | $1.75 | $1.59 | $0.16 | 13,077,272.0 | +0.63% |
| Sep 23, 2025 | $1.79 | $1.56 | $0.2299 | 21,062,941.0 | -5.88% |
| Sep 22, 2025 | $1.73 | $1.43 | $0.30 | 24,550,541.0 | +13.33% |
| Sep 19, 2025 | $1.60 | $1.45 | $0.15 | 22,943,774.0 | -1.96% |
| Sep 18, 2025 | $1.64 | $1.30 | $0.34 | 36,891,669.0 | +21.43% |
| Sep 17, 2025 | $1.34 | $1.24 | $0.10 | 10,146,031.0 | -5.26% |
| Sep 16, 2025 | $1.34 | $1.25 | $0.09 | 7,180,890.0 | +5.56% |
| Sep 15, 2025 | $1.29 | $1.18 | $0.11 | 8,640,189.0 | +6.78% |
Quantum Si Incorporated Stock (QSI) Year by Year Price History
In this detailed analysis, we present a comprehensive overview of the price movements of Quantum Si Incorporated stock over the years. By exploring the year-by-year data, investors can gain valuable insights into the historical performance and volatility of QSI shares. From significant milestones and fluctuations to notable trends, this in-depth examination of Quantum Si Incorporated stock price history provides a foundation for understanding how the company's stock has evolved over time.
Quantum Si Incorporated Stock (QSI) Price History 2025
| Month | High | Low | High - Low | Volume | % Change |
|---|---|---|---|---|---|
| Oct, 2025 | $1.95 | $1.41 | $0.54 | 111,279,320.0 | +34.90% |
| Sep, 2025 | $1.79 | $1.03 | $0.76 | 216,756,850.0 | +25.89% |
| Aug, 2025 | $1.49 | $0.9499 | $0.5401 | 136,180,923.0 | -24.32% |
| Jul, 2025 | $2.18 | $1.47 | $0.71 | 165,986,914.0 | -24.49% |
| Jun, 2025 | $2.14 | $1.55 | $0.59 | 158,414,170.0 | +16.67% |
| May, 2025 | $2.15 | $1.12 | $1.03 | 222,626,483.0 | +47.37% |
| Apr, 2025 | $1.30 | $1.02 | $0.285 | 63,004,922.0 | -5.00% |
| Mar, 2025 | $1.76 | $1.12 | $0.64 | 168,074,933.0 | -13.04% |
| Feb, 2025 | $2.25 | $1.28 | $0.97 | 167,420,487.0 | -30.30% |
| Jan, 2025 | $5.77 | $1.85 | $3.92 | 749,973,379.0 | -26.67% |
Quantum Si Incorporated Stock (QSI) Price History 2024
| Month | High | Low | High - Low | Volume | % Change |
|---|---|---|---|---|---|
| Dec, 2024 | $4.14 | $1.08 | $3.06 | 712,357,764.0 | +166.40% |
| Nov, 2024 | $1.89 | $0.6121 | $1.28 | 390,803,292.0 | +78.32% |
| Oct, 2024 | $0.9079 | $0.7001 | $0.2078 | 10,690,042.0 | -20.54% |
| Sep, 2024 | $1.10 | $0.8688 | $0.2312 | 8,883,893.0 | -6.82% |
| Aug, 2024 | $1.11 | $0.785 | $0.325 | 12,013,490.0 | -13.14% |
| Jul, 2024 | $1.26 | $0.8818 | $0.3782 | 13,645,905.0 | +3.81% |
| Jun, 2024 | $1.66 | $0.732 | $0.928 | 24,896,066.0 | -30.92% |
| May, 2024 | $1.99 | $1.50 | $0.49 | 12,210,599.0 | -5.59% |
| Apr, 2024 | $1.99 | $1.48 | $0.515 | 11,788,724.0 | -18.27% |
| Mar, 2024 | $2.43 | $1.54 | $0.89 | 22,630,215.0 | +17.96% |
| Feb, 2024 | $1.86 | $1.38 | $0.48 | 12,201,465.0 | +7.05% |
| Jan, 2024 | $2.16 | $1.53 | $0.629 | 12,246,791.0 | -22.39% |
Quantum Si Incorporated Stock (QSI) Price History 2023
| Month | High | Low | High - Low | Volume | % Change |
|---|---|---|---|---|---|
| Dec, 2023 | $2.31 | $1.48 | $0.83 | 15,137,908.0 | +24.84% |
| Nov, 2023 | $1.83 | $1.15 | $0.68 | 15,531,166.0 | +34.17% |
| Oct, 2023 | $1.71 | $1.12 | $0.59 | 14,513,607.0 | -27.71% |
| Sep, 2023 | $2.46 | $1.57 | $0.895 | 18,425,417.0 | -29.06% |
| Aug, 2023 | $3.90 | $1.86 | $2.04 | 55,022,781.0 | -39.85% |
| Jul, 2023 | $3.90 | $1.77 | $2.13 | 63,091,701.0 | +117.32% |
| Jun, 2023 | $1.91 | $1.38 | $0.53 | 18,888,312.0 | +18.54% |
| May, 2023 | $1.94 | $1.36 | $0.575 | 8,959,012.0 | +2.72% |
| Apr, 2023 | $1.77 | $1.39 | $0.385 | 10,876,518.0 | -16.48% |
| Mar, 2023 | $2.22 | $1.54 | $0.68 | 17,688,528.0 | -3.30% |
| Feb, 2023 | $2.63 | $1.77 | $0.86 | 13,113,962.0 | -18.02% |
| Jan, 2023 | $2.48 | $1.64 | $0.845 | 12,179,095.0 | +21.31% |
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