Quantum-Si Incorporated - Class A Common Stock (NQ:QSI)
Price and Volume
Detailed Quote| Volume | 7,948,145 |
| Open | 1.350 |
| Bid (Size) | 1.350 (6,600) |
| Ask (Size) | 1.360 (3,300) |
| Prev. Close | 1.390 |
| Today's Range | 1.240 - 1.390 |
| 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
56.3% below 52-week high
1.355
0.6952W Low
3.1052W High
1 Week
18.4% below 1-week high
1.201W 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 $1.35, 56.3% below its 52-week high. Over the past week it ranged between $1.20 and $1.66.
Past 12 Months
1W
+$0.14
1M
+$0.63
3M
+$0.49
6M
+$0.30
YTD
+$0.20
1Y
-$0.79
QSI was -37.0% over the past year, +29.0% over six months, +16.8% year to date, +11.1% in the last week.
12 Months vs Market
QSI
-37.0%
DIA
+12.7%
SPY
+16.7%
QQQ
+21.9%
IWM
+10.8%
Over the past 12 months QSI returned -37.0% versus DIA (Dow) +12.7%, SPY (S&P 500) +16.7%, QQQ (Nasdaq 100) +21.9% and IWM (Russell 2000) +10.8%.
Volume & Liquidity
1.61× 3-mo avg
Today 7,948,145
3-mo avg 4.9M
1W
13.7M
1M
9.2M
3M
4.9M
6M
5.6M
YTD
5.0M
1Y
5.9M
QSI most recently traded 7,948,145 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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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 1.355
When was Quantum-Si Incorporated - Class A Common Stock last traded?
The last trade of Quantum-Si Incorporated - Class A Common Stock was at 10/15/26 03:29 PM ET
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