Quantum-Si Incorporated - Class A Common Stock (NQ:QSI)
Price and Volume
Detailed Quote| Volume | 8,348,809 |
| Open | 1.525 |
| Bid (Size) | 1.310 (10,300) |
| Ask (Size) | 1.320 (11,500) |
| Prev. Close | 1.550 |
| Today's Range | 1.260 - 1.530 |
| 52wk Range | 0.6900 - 3.100 |
| Shares Outstanding | N/A |
| Dividend Yield | N/A |
Top News
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Performance
52-Week Range
57.7% below 52-week high
1.310
0.6952W Low
3.1052W High
1 Week
15.5% below 1-week high
0.801W Low
1.551W 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 $1.31, 57.7% below its 52-week high. Over the past week it ranged between $0.80 and $1.55.
Past 12 Months
1W
+$0.52
1M
+$0.54
3M
+$0.36
6M
+$0.58
YTD
+$0.15
1Y
-$0.50
QSI was -27.6% over the past year, +79.7% over six months, +12.9% year to date, +64.8% in the last week.
12 Months vs Market
QSI
-27.6%
DIA
+9.6%
SPY
+15.2%
QQQ
+24.0%
IWM
+14.7%
Over the past 12 months QSI returned -27.6% versus DIA (Dow) +9.6%, SPY (S&P 500) +15.2%, QQQ (Nasdaq 100) +24.0% and IWM (Russell 2000) +14.7%.
Volume & Liquidity
2.27× 3-mo avg
Today 8,348,809
3-mo avg 3.7M
1W
18.0M
1M
5.7M
3M
3.7M
6M
5.0M
YTD
4.7M
1Y
5.9M
QSI most recently traded 8,348,809 shares against a 3-month average daily volume of 3.7M.
More News
Read More
Thursday's session: gap up and gap down stocks ↗
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 1.310
When was Quantum-Si Incorporated - Class A Common Stock last traded?
The last trade of Quantum-Si Incorporated - Class A Common Stock was at 10/05/26 12:32 PM ET
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