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2.00
6.98%
-0.15
After Hours:
1.97
-0.03
-1.50%
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 November 03, 2025, is $2.00.
- 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 226.74% to $2.00 now.
- The 52-week high stock price for QSI is $5.77, representing a 188.50% increase from the current share price, occurred on January 03, 2025.
- The 52-week low stock price for QSI is $0.6121, indicating a -69.40% 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 |
|---|---|---|---|---|---|
| Nov 03, 2025 | $2.19 | $1.95 | $0.235 | 9,435,398.0 | -6.98% |
| Oct 31, 2025 | $2.16 | $2.03 | $0.13 | 6,095,246.0 | +5.91% |
| Oct 30, 2025 | $2.12 | $2.02 | $0.10 | 6,612,293.0 | -5.14% |
| Oct 29, 2025 | $2.23 | $2.09 | $0.14 | 7,068,673.0 | -1.83% |
| Oct 28, 2025 | $2.32 | $2.14 | $0.1799 | 8,985,392.0 | -6.84% |
| Oct 27, 2025 | $2.42 | $2.22 | $0.20 | 10,183,610.0 | +2.18% |
| Oct 24, 2025 | $2.44 | $2.26 | $0.18 | 11,627,904.0 | +4.09% |
| Oct 23, 2025 | $2.38 | $2.17 | $0.21 | 11,993,104.0 | +0.00% |
| Oct 22, 2025 | $2.34 | $2.00 | $0.34 | 18,279,766.0 | -5.98% |
| Oct 21, 2025 | $2.52 | $2.27 | $0.25 | 15,142,561.0 | -9.48% |
| Oct 20, 2025 | $2.73 | $2.39 | $0.34 | 21,830,553.0 | +13.38% |
| Oct 17, 2025 | $2.52 | $2.26 | $0.265 | 20,754,378.0 | -10.24% |
| Oct 16, 2025 | $3.10 | $2.50 | $0.60 | 48,979,510.0 | -3.42% |
| Oct 15, 2025 | $2.75 | $2.35 | $0.395 | 53,079,352.0 | +22.33% |
| Oct 14, 2025 | $2.26 | $1.96 | $0.30 | 23,511,169.0 | +3.37% |
| Oct 13, 2025 | $2.13 | $1.73 | $0.40 | 32,872,498.0 | +24.55% |
| 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% |
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 |
|---|---|---|---|---|---|
| Nov, 2025 | $2.19 | $1.95 | $0.235 | 18,870,796.0 | -6.98% |
| Oct, 2025 | $3.10 | $1.41 | $1.69 | 401,229,971.0 | +52.48% |
| 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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