Quantum-Si Incorporated - Class A Common Stock (NQ:QSI)Price and VolumeDetailed Quote
Top NewsMore NewsPerformance
52-Week Range
59.5% below 52-week high
1.255
0.6952W Low
3.1052W High
1 Week
24.4% 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 $1.25, 59.5% below its 52-week high. Over the past week it ranged between $1.24 and $1.66.
Past 12 Months
1W
-$0.28
1M
+$0.53
3M
+$0.44
6M
+$0.21
YTD
+$0.09
1Y
-$1.38
QSI was -52.3% over the past year, +20.7% over six months, +8.2% year to date, -18.0% in the last week.
12 Months vs Market
QSI
DIA
SPY
QQQ
IWM
Over the past 12 months QSI returned -52.3% versus DIA (Dow) +13.3%, SPY (S&P 500) +16.0%, QQQ (Nasdaq 100) +19.8% and IWM (Russell 2000) +9.9%.
Volume & Liquidity
0.15× 3-mo avg
Today 755,458
3-mo avg 5.0M
1W
1M
3M
6M
YTD
1Y
QSI most recently traded 755,458 shares against a 3-month average daily volume of 5.0M. More NewsRead More
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August 20, 2026
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August 13, 2026
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May 08, 2026
Frequently Asked QuestionsIs 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 1.255
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 10:07 AM ET
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