Quantum-Si Incorporated - Class A Common Stock (NQ:QSI)
Price and Volume
Detailed Quote| Volume | 9,906,416 |
| Open | 1.570 |
| Bid (Size) | 1.450 (5,800) |
| Ask (Size) | 1.470 (500) |
| Prev. Close | 1.750 |
| Today's Range | 1.405 - 1.600 |
| 52wk Range | 0.6900 - 2.185 |
| Shares Outstanding | N/A |
| Dividend Yield | N/A |
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Performance
52-Week Range
33.2% below 52-week high
1.460
0.6952W Low
2.1952W High
1 Week
19.3% below 1-week high
1.361W Low
1.811W High
Quantum-Si Incorporated - Class A Common Stock (QSI) traded between $0.69 and $2.19 over the past 52 weeks and last traded at $1.46, 33.2% below its 52-week high. Over the past week it ranged between $1.36 and $1.81.
Past 12 Months
1W
1M
+$0.39
3M
+$0.75
6M
+$0.50
YTD
+$0.30
1Y
-$0.57
QSI was -28.1% over the past year, +52.4% over six months, +25.9% year to date.
12 Months vs Market
QSI
-28.1%
DIA
+8.9%
SPY
+11.2%
QQQ
+10.3%
IWM
+14.1%
Over the past 12 months QSI returned -28.1% versus DIA (Dow) +8.9%, SPY (S&P 500) +11.2%, QQQ (Nasdaq 100) +10.3% and IWM (Russell 2000) +14.1%.
Volume & Liquidity
1.63× 3-mo avg
Today 9,906,416
3-mo avg 6.1M
1W
11.1M
1M
12.0M
3M
6.1M
6M
5.7M
YTD
5.2M
1Y
5.3M
QSI most recently traded 9,906,416 shares against a 3-month average daily volume of 6.1M.
More News
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August 20, 2026
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August 13, 2026
Frequently Asked Questions
Is Quantum-Si Incorporated - Class A Common Stock publicly traded?
Yes, Quantum-Si Incorporated - Class A Common Stock is publicly traded.
What exchange does Quantum-Si Incorporated - Class A Common Stock trade on?
Quantum-Si Incorporated - Class A Common Stock trades on the Nasdaq Stock Market
What is the ticker symbol for Quantum-Si Incorporated - Class A Common Stock?
The ticker symbol for Quantum-Si Incorporated - Class A Common Stock is QSI on the Nasdaq Stock Market
What is the current price of Quantum-Si Incorporated - Class A Common Stock?
The current price of Quantum-Si Incorporated - Class A Common Stock is 1.460
When was Quantum-Si Incorporated - Class A Common Stock last traded?
The last trade of Quantum-Si Incorporated - Class A Common Stock was at 10/30/26 04:00 PM ET