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Quantum-Si Incorporated - Class A Common Stock (NQ:QSI)

1.400 +0.250 (+21.74%)
Delayed Quote Updated: 4:00 PM EDT, Oct 23, 2026 Add to My Watchlist

Price and Volume

Detailed Quote
Volume 11,461,198
Open 1.150
Bid (Size) 1.410 (6,300)
Ask (Size) 1.420 (400)
Prev. Close 1.150
Today's Range 1.150 - 1.420
52wk Range 0.6900 - 2.440
Shares Outstanding N/A
Dividend Yield N/A

Performance

52-Week Range 42.6% below 52-week high
1.400
0.6952W Low 2.4452W High
1 Week 1.4% below 1-week high
1.011W Low 1.421W High

Quantum-Si Incorporated - Class A Common Stock (QSI) traded between $0.69 and $2.44 over the past 52 weeks and last traded at $1.40, 42.6% below its 52-week high. Over the past week it ranged between $1.01 and $1.42.

Past 12 Months
+28.4%
+84.5%
+81.8%
+54.6%
+20.7%
-36.4%
1W +$0.31
1M +$0.64
3M +$0.63
6M +$0.49
YTD +$0.24
1Y -$0.80

QSI was -36.4% over the past year, +54.6% over six months, +20.7% year to date, +28.4% in the last week.

12 Months vs Market
QSI
-36.4%
DIA
+11.6%
SPY
+13.1%
QQQ
+15.4%
IWM
+11.9%

Over the past 12 months QSI returned -36.4% versus DIA (Dow) +11.6%, SPY (S&P 500) +13.1%, QQQ (Nasdaq 100) +15.4% and IWM (Russell 2000) +11.9%.

Volume & Liquidity 2.11× 3-mo avg
Today 11,461,198 3-mo avg 5.4M
1W
6.7M
1M
10.9M
3M
5.4M
6M
5.5M
YTD
5.1M
1Y
5.3M

QSI most recently traded 11,461,198 shares against a 3-month average daily volume of 5.4M.

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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 1.400
When was Quantum-Si Incorporated - Class A Common Stock last traded?
The last trade of Quantum-Si Incorporated - Class A Common Stock was at 10/23/26 04:00 PM ET
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