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Quantum-Si Incorporated Class A Share Price

Quantum-Si Incorporated Class A Share Price

NASDAQ: QSI | Micro Cap
$0.82
+$0.06 (7.57%) Last updated on 08 Aug, 2026 | 01:29 IST
  • Performance
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  • Fundamentals
  • Quarterly P&L
  • Annual P&L
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  • Price history
  • FAQs

Quantum-Si Incorporated Class A Stock Performance

Open
$0.77
Prev. Close
$0.76
Circuit Range
N/A
Day Range
$0.77 - $0.82
Year Range
$0.69 - $3.09
Volume
15,122
Average Traded
$0.81

Quantum-Si Incorporated Class A Share Price Today

As of 10 August 2026, Quantum-Si Incorporated Class A's share price is $0.82. The stock opened at $0.77, compared to its previous close of $0.76. During today's trading session, Quantum-Si Incorporated Class A's share price traded between $0.77 and $0.82, with an average price of $0.80. Over the past 52 weeks, the stock has recorded a high of $3.09 and a low of $0.69. In terms of performance, Quantum-Si Incorporated Class A's share price has declined by 15.49% over the last six months and is down 27.19% on a year-on-year basis.

Quantum-Si Incorporated Class A Share Price Chart

$0.77$0.82
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Quantum-Si Incorporated Class A Stock Fundamentals & Key Indicators

Market Cap
$161.28M
PE Ratio (TTM)
-1.60
Dividend Yield
N/A
EPS (TTM)
$-0.51
Revenue (TTM)
$2.44M
Return On Equity (TTM)
-46.02%
Profit Margin
-4160.06%
Debt to Equity
0.10
Quarterly Earnings Growth YoY
-41.05%

Quantum-Si Incorporated Class A Quarterly Profit & Loss

All figures in USD

ParticularsMar 2024Jun 2024Sep 2024Mar 2025Jun 2025Sep 2025
RevenueN/A$622000.00$787000.00$842000.00$591000.00$552000.00
Net Profit-$19.47M-$23.10M-$25.31M-$19.19M-$28.84M-$35.70M
Net Profit MarginN/A-3713.67%-3216.39%-2278.98%-4879.19%-6467.93%
Income ChangeN/A-18.61%-9.58%24.19%-50.27%-23.81%

Quantum-Si Incorporated Class A Annual Profit & Loss

All figures in USD

Particulars20212022202320242025
RevenueN/AN/A$1.08M$3.06M$2.44M
Net Profit-$94.99M-$132.44M-$95.96M-$101.01M-$101.34M
Net Profit MarginN/AN/A-8868.76%-3303.04%-4160.06%
Income ChangeN/A-39.43%27.55%-5.26%-0.33%

About Quantum-Si Incorporated Class A

Quantum-Si incorporated, a life sciences company, engages in the development of single-molecule detection platform to enable Next Generation Protein Sequencing (NGPS). The company offers Platinum NGPS instrument that provides single molecule amino acid level resolution with a streamlined workflow, including automated data analysis that accessible to researchers in all laboratory types; Platinum Pro NGPS instrument, a single molecule amino acid resolution, which provides an enhanced user interface, cloud or on instrument data analysis and an available pro mode; Library preparation kits to prepare protein sample for sequencing; Barcoding Kits to optimize the workflow and performance of technology; and Sequencing Kits contains the reagents and consumables used to perform NGPS on the Platinum or Platinum Pro instrument. It also provides Platinum Analysis Software, a cloud-based solution that automates data analysis workflows and provides a user-friendly interface and visualization of the sequencing results. Its products are used in antibody characterization, biomarker identification, protein identification, protein variants, protein barcoding, and post translational modification analysis applications. Quantum-Si incorporated was founded in 2013 is headquartered in Branford, Connecticut.

Quantum-Si Incorporated Class A Historical Returns

MonthOpenCloseChange %
Aug 2026
$0.72
$0.81
+13.67%
Jul 2026
$0.90
$0.72
-18.98%
Jun 2026
$1.14
$0.89
-25.63%
May 2026
$0.97
$1.19
+20.93%
Apr 2026
$0.79
$0.98
+26.48%
Mar 2026
$0.94
$0.78
-19.38%
Feb 2026
$1.12
$0.96
-15.35%
Jan 2026
$1.13
$1.14
+4.59%
Dec 2025
$1.34
$1.09
-22.97%
Nov 2025
$2.16
$1.42
-33.88%
Oct 2025
$1.42
$2.14
+51.24%
Sep 2025
$1.09
$1.42
+26.34%

QSI Share Price FAQs

What is Quantum-Si Incorporated Class A share price today?

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Quantum-Si Incorporated Class A share price today is $0.82 as on August 8, 2026 at 1:29 am IST.

What is the 52 week high and 52 week low of Quantum-Si Incorporated Class A stock?

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The 52 week high of Quantum-Si Incorporated Class A stock is $3.09, while the 52 week low is $0.69 as of 8 Aug '26.

What is QSI's market capitalisation today?

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QSI market capitalisation is $161.28M as of August 10, 2026, at 9:27 am IST.

What is QSI's net income for the last quarter?

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QSI's net income for the last quarter is -0.04B USD.

What is the 5 year returns of QSI?

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The 5 year returns of QSI is -91.61% as on 8 Aug '26.

What is the high & low stock price of QSI today?

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QSI stock price hit a high of $0.82 and low of $0.77 as of 8 Aug '26.

Can I buy QSI shares in India?

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Yes. You can buy QSI in India by opening an international trading account.