Quantum-Si (QSI)
NASDAQ: QSI
· Real-Time Price · USD
1.09
-0.01 (-0.91%)
At close: Aug 18, 2025, 3:59 PM
1.10
0.46%
After-hours: Aug 18, 2025, 07:52 PM EDT
QSI Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj Close | % Change | Volume |
|---|---|---|---|---|---|---|---|
| Aug 18, 2025 | 1.11 | 1.12 | 1.09 | 1.09 | 1.09 | -0.91% | 4,871,503 |
| Aug 15, 2025 | 1.13 | 1.14 | 1.09 | 1.10 | 1.10 | -1.79% | 5,863,645 |
| Aug 14, 2025 | 1.18 | 1.19 | 1.08 | 1.12 | 1.12 | -4.27% | 9,810,800 |
| Aug 13, 2025 | 1.19 | 1.21 | 1.14 | 1.17 | 1.17 | 0.86% | 7,961,100 |
| Aug 12, 2025 | 1.20 | 1.22 | 1.14 | 1.16 | 1.16 | -3.33% | 9,882,629 |
| Aug 11, 2025 | 1.27 | 1.28 | 1.18 | 1.20 | 1.20 | -5.51% | 8,681,807 |
| Aug 8, 2025 | 1.33 | 1.35 | 1.26 | 1.27 | 1.27 | -4.51% | 6,536,100 |
| Aug 7, 2025 | 1.36 | 1.38 | 1.31 | 1.33 | 1.33 | -2.92% | 4,185,200 |
| Aug 6, 2025 | 1.36 | 1.39 | 1.27 | 1.37 | 1.37 | -4.86% | 8,481,600 |
| Aug 5, 2025 | 1.46 | 1.48 | 1.40 | 1.44 | 1.44 | 0.00% | 7,832,900 |
| Aug 4, 2025 | 1.49 | 1.49 | 1.43 | 1.44 | 1.44 | -1.37% | 4,385,133 |
| Aug 1, 2025 | 1.42 | 1.49 | 1.40 | 1.46 | 1.46 | -1.35% | 4,434,700 |
| Jul 31, 2025 | 1.62 | 1.62 | 1.47 | 1.48 | 1.48 | -8.64% | 11,156,626 |
| Jul 30, 2025 | 1.70 | 1.70 | 1.61 | 1.62 | 1.62 | -1.22% | 4,441,700 |
| Jul 29, 2025 | 1.80 | 1.80 | 1.60 | 1.64 | 1.64 | -8.38% | 9,424,027 |
| Jul 28, 2025 | 1.93 | 1.95 | 1.76 | 1.79 | 1.79 | -7.25% | 6,785,434 |
| Jul 25, 2025 | 1.97 | 1.98 | 1.85 | 1.93 | 1.93 | -2.53% | 7,424,730 |
| Jul 24, 2025 | 1.95 | 1.99 | 1.86 | 1.98 | 1.98 | 5.32% | 10,677,500 |
| Jul 23, 2025 | 1.83 | 1.90 | 1.77 | 1.88 | 1.88 | 4.44% | 8,536,946 |
| Jul 22, 2025 | 1.74 | 1.81 | 1.68 | 1.80 | 1.80 | 4.65% | 5,848,800 |