Regular Market:
$1.53+$0.27(+21.43%)Full Day:
$1.53+$0.23(+17.71%)Summary
- As of today (September 18, 2025), QSI stock price is $1.53, with a rise of +$0.27 (+21.43%) during the most recent trading session on September 18, 2025.
- Over the past year, QSI stock price has increased by +$0.53 (+53.00%).
- QSI stock price is now -93.88% below its all-time high of $25.00.
Performance
QSI Price Chart
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Highlights
Range
Split history
Related metrics
QSI Price Trends
| PeriodPeriod | PricePrice | S&P 500S&P 500 | NASDAQNASDAQ | Dow JonesDow Jones | XLVXLV |
|---|---|---|---|---|---|
| todaytoday | +21.4% | +0.5% | +1.0% | +0.3% | +0.2% |
| 1 m1 month | +40.4% | +2.8% | +3.9% | +2.8% | +1.2% |
| 3 m3 months | -12.6% | +10.9% | +15.0% | +9.4% | +3.2% |
| 6 m6 months | -3.8% | +18.1% | +28.4% | +11.0% | -6.4% |
| ytdytd | -43.3% | +12.8% | +16.4% | +8.5% | -0.1% |
| 1 y1 year | +53.0% | +18.1% | +27.9% | +11.2% | -11.5% |
| 5 y5 years | - | +99.8% | +108.3% | +66.9% | +30.3% |
QSI Price Highs & Lows
| PeriodPeriod | HighHigh | Current vs highvs high | LowLow | Current vs lowvs low | |
|---|---|---|---|---|---|
| 1 m | 1-month | $1.64 | -6.7% | $0.95 | +61.0% |
| 3 m | 3-month | $2.18 | -29.8% | $0.95 | +61.0% |
| 6 m | 6-month | $2.18 | -29.8% | $0.95 | +61.0% |
| 1 y | 1-year | $5.77 | -73.5% | $0.61 | +150.0% |
| 3 y | 3-year | $5.77 | -73.5% | $0.61 | +150.0% |
| 5 y | 5-year | $25.00 | -93.9% | $0.61 | +150.0% |
| alltime | all time | $25.00 | -93.9% | $0.61 | +150.0% |
QSI Price History
| Date | Value |
|---|---|
| 2025 | $1.53(-43.3%) |
| 2024 | $2.70(+34.3%) |
| 2023 | $2.01(+9.8%) |
| Date | Value |
|---|---|
| 2022 | $1.83(-76.7%) |
| 2021 | $7.87(-22.5%) |
| 2020 | $10.15 |
FAQ
- What is the price of Quantum-Si incorporated stock today?
- What is the all time high price for Quantum-Si incorporated stock?
- What is QSI year-to-date return?
- What is QSI year-on-year return?
What is the price of Quantum-Si incorporated stock today?
The current price of QSI is $1.53
What is the all time high price for Quantum-Si incorporated stock?
Quantum-Si incorporated stock all-time high price is $25.00
What is QSI year-to-date return?
Quantum-Si incorporated stock has returned -$1.17 (-43.33%) since the beginning of the year
What is QSI year-on-year return?
Over the past year, Quantum-Si incorporated stock has returned +$0.53 (+53.00%)