Quantum-Si Incorporated - Class A Common Stock (NQ:QSI)
Price and Volume
Detailed Quote| Volume | 4,878,408 |
| Open | 1.330 |
| Bid (Size) | 1.130 (11,300) |
| Ask (Size) | 1.140 (36,400) |
| Prev. Close | 1.310 |
| Today's Range | 1.130 - 1.330 |
| 52wk Range | 0.6900 - 3.100 |
| Shares Outstanding | N/A |
| Dividend Yield | N/A |
Top News
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Performance
52-Week Range
63.4% below 52-week high
1.135
0.6952W Low
3.1052W High
1 Week
31.6% below 1-week high
1.241W Low
1.661W High
Quantum-Si Incorporated - Class A Common Stock (QSI) traded between $0.69 and $3.10 over the past 52 weeks and last traded at $1.14, 63.4% below its 52-week high. Over the past week it ranged between $1.24 and $1.66.
Past 12 Months
1W
-$0.40
1M
+$0.42
3M
+$0.32
6M
+$0.09
YTD
-$0.02
1Y
-$1.49
QSI was -56.8% over the past year, +9.1% over six months, -2.2% year to date, -25.8% in the last week.
12 Months vs Market
QSI
-56.8%
DIA
+12.3%
SPY
+15.1%
QQQ
+18.6%
IWM
+8.3%
Over the past 12 months QSI returned -56.8% versus DIA (Dow) +12.3%, SPY (S&P 500) +15.1%, QQQ (Nasdaq 100) +18.6% and IWM (Russell 2000) +8.3%.
Volume & Liquidity
0.97× 3-mo avg
Today 4,878,408
3-mo avg 5.0M
1W
14.4M
1M
9.5M
3M
5.0M
6M
5.5M
YTD
5.1M
1Y
5.8M
QSI most recently traded 4,878,408 shares against a 3-month average daily volume of 5.0M.
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August 20, 2026
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August 13, 2026
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August 13, 2026
Quantum-Si Q1 Earnings Call Highlights ↗
May 08, 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 1.135
When was Quantum-Si Incorporated - Class A Common Stock last traded?
The last trade of Quantum-Si Incorporated - Class A Common Stock was at 10/16/26 01:04 PM ET
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