Quantum-Si Incorporated - Class A Common Stock (NQ:QSI)
Price and Volume
Detailed Quote| Volume | 3,178,429 |
| Open | 1.340 |
| Bid (Size) | 1.360 (7,000) |
| Ask (Size) | 1.370 (6,900) |
| 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
55.8% below 52-week high
1.370
0.6952W Low
3.1052W High
1 Week
17.5% 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 $1.37, 55.8% below its 52-week high. Over the past week it ranged between $1.09 and $1.66.
Past 12 Months
1W
+$0.09
1M
+$0.65
3M
+$0.50
6M
+$0.53
YTD
+$0.21
1Y
-$0.71
QSI was -34.1% over the past year, +62.9% over six months, +18.1% year to date, +7.0% in the last week.
12 Months vs Market
QSI
-34.1%
DIA
+11.7%
SPY
+16.0%
QQQ
+21.3%
IWM
+11.0%
Over the past 12 months QSI returned -34.1% versus DIA (Dow) +11.7%, SPY (S&P 500) +16.0%, QQQ (Nasdaq 100) +21.3% and IWM (Russell 2000) +11.0%.
Volume & Liquidity
0.65× 3-mo avg
Today 3,178,429
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 3,178,429 shares against a 3-month average daily volume of 4.9M.
More News
Read More
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October 06, 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 1.370
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 12:28 PM ET
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