Quantum-Si Incorporated - Class A Common Stock (NQ:QSI)
Price and Volume
Detailed Quote| Volume | 2,691,846 |
| Open | 1.340 |
| Bid (Size) | 1.400 (7,000) |
| Ask (Size) | 1.410 (3,500) |
| Prev. Close | 1.410 |
| Today's Range | 1.330 - 1.440 |
| 52wk Range | 0.6900 - 3.100 |
| Shares Outstanding | N/A |
| Dividend Yield | N/A |
Top News
More News
These stocks are moving in today's session ↗
October 09, 2026
Performance
52-Week Range
54.5% below 52-week high
1.409
0.6952W Low
3.1052W High
1 Week
15.1% below 1-week high
1.091W 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 $1.41, 54.5% below its 52-week high. Over the past week it ranged between $1.09 and $1.66.
Past 12 Months
1W
+$0.13
1M
+$0.68
3M
+$0.54
6M
+$0.57
YTD
+$0.25
1Y
-$0.67
QSI was -32.3% over the past year, +67.6% over six months, +21.5% year to date, +10.1% in the last week.
12 Months vs Market
QSI
-32.3%
DIA
+11.9%
SPY
+16.2%
QQQ
+21.7%
IWM
+11.3%
Over the past 12 months QSI returned -32.3% versus DIA (Dow) +11.9%, SPY (S&P 500) +16.2%, QQQ (Nasdaq 100) +21.7% and IWM (Russell 2000) +11.3%.
Volume & Liquidity
0.55× 3-mo avg
Today 2,691,846
3-mo avg 4.9M
1W
14.3M
1M
9.4M
3M
4.9M
6M
5.6M
YTD
5.0M
1Y
6.0M
QSI most recently traded 2,691,846 shares against a 3-month average daily volume of 4.9M.
More News
Read More
These stocks have an unusual volume in today's session ↗
October 06, 2026
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October 01, 2026
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October 01, 2026
These stocks are moving in today's session ↗
September 29, 2026
Quantum-Si (QSI) Q2 2026 Earnings Call Transcript ↗
August 20, 2026
Quantum-Si Q2 Earnings Call Highlights ↗
August 13, 2026
Full Transcript: Quantum-Si Q2 2026 Earnings Call ↗
August 13, 2026
Quantum-Si Q1 Earnings Call Highlights ↗
May 08, 2026
Quantum-Si (QSI) Q1 2026 Earnings Transcript ↗
May 07, 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 1.409
When was Quantum-Si Incorporated - Class A Common Stock last traded?
The last trade of Quantum-Si Incorporated - Class A Common Stock was at 10/14/26 11:44 AM ET
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