About Quantum-Si Inc
- Industry: Life Sciences Tools & Services
- Exchange: NASDAQ NMS - GLOBAL MARKET
- Country: US
- Website: https://www.quantum-si.com/
Frequently Asked Questions
What is the 52-week range for QSI?
The 52-week high is $3.1 and the 52-week low is $0.69.
What is the P/E ratio for QSI?
The P/E ratio data is currently unavailable.
What is the dividend yield for QSI?
This company does not currently pay a dividend or the data is unavailable.
What is the Return on Equity (ROE)?
The trailing twelve months (TTM) Return on Equity is -47.12%.
What is the Net Profit Margin?
The Net Profit Margin (TTM) is -6138.26%.
What is the Price to Book (P/B) Ratio?
The annual Price to Book ratio stands at 1.08.
Analyst Recommendation Trends
Wall Street analyst consensus for QSI over the last few months:
Latest QSI News
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Why Is Quantum-Si Stock Gaining Tuesday?
Quantum-Si (QSI) stock jumped over 24% after presenting impressive interim Proteus platform data at the HUPO 2026 conference.
12 Health Care Stocks Moving In Tuesday's Intraday Session
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HC Wainwright & Co. Reiterates Buy on Quantum-Si, Maintains $4 Price Target
HC Wainwright & Co. analyst Swayampakula Ramakanth reiterates Quantum-Si (NASDAQ:QSI) with a Buy and maintains $4 price target.
Quantum-Si Presents Interim Proteus™ Data at World HUPO 2026 Demonstrating a Significant Step Change in Performance Compared to Platinum® Pro
All measurable sequencing metrics show profound improvement over Platinum ProBRANFORD, Conn., Sept. 28, 2026 (GLOBE NEWSWIRE) -- Quantum-Si Incorporated (Nasdaq: QSI) (“Quantum-Si,” “QSI” or the “Company”), a proteomics company redefining protein analysis through single-molecule protein sequencing, today announced interim development results comparing its next-generation Proteus™ platform with its commercially available Platinum® Pro instrument. Using a developmental sequencing kit that detects
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Investing.com -- Saudi Arabian stocks fell on Sunday, with losses spreading across Gulf markets after Yemen’s Houthis said they attacked targets in Riyadh with missiles and drones, Reuters reported.
Quantum-Si Announces Detection of 18 Amino Acids Using a Developmental Sequencing Kit on Proteus™
Milestone continues the progress towards detection of all 20 amino acids by end of 2026BRANFORD, Conn., Sept. 15, 2026 (GLOBE NEWSWIRE) -- Quantum-Si Incorporated (Nasdaq: QSI) (“Quantum-Si,” “QSI” or the “Company”), a proteomics company redefining protein analysis through single-molecule protein sequencing, today announced that it has demonstrated sequencing with detection of 18 amino acids using a developmental kit run on integrated Proteus™ instruments. The Company continues to expect to demo
Quantum-Si Expands Proteus™ Roadshow with Additional U.S. and European Cities
Growing Multi-City Program Continues to Increase Awareness of Proteus and Support Customer Funnel Development Ahead of Commercial LaunchBRANFORD, Conn., Sept. 09, 2026 (GLOBE NEWSWIRE) -- Quantum-Si Incorporated (Nasdaq: QSI) (“Quantum-Si,” “QSI” or the “Company”), a proteomics technology company redefining protein analysis through single-molecule protein sequencing, today announced the expansion of a roadshow designed to accelerate market education on its Proteus platform and applications for p
Related Stocks (Peers)
Recent Insider Transactions
| Date | Name | Shares Changed | Price | Value |
|---|---|---|---|---|
| 2026-09-22 | LaPointe Christian | -4,721 | $0.7608 | $3,592 |
| 2026-09-22 | Keyes Jeffry R. | -2,493 | $0.7608 | $1,897 |
| 2026-09-22 | Hawkins Jeffrey Alan | -9,709 | $0.7608 | $7,387 |
| 2026-09-21 | LaPointe Christian | -9,795 | $0.7558 | $7,403 |
| 2026-09-21 | Keyes Jeffry R. | -5,172 | $0.7558 | $3,909 |
| 2026-09-21 | Hawkins Jeffrey Alan | -20,143 | $0.7558 | $15,224 |
| 2026-06-23 | LaPointe Christian | -7,794 | $0.899 | $7,007 |
| 2026-06-23 | Vieceli John S. | -15,112 | $0.899 | $13,586 |
| 2026-06-23 | Keyes Jeffry R. | -4,117 | $0.899 | $3,701 |
| 2026-06-23 | Hawkins Jeffrey Alan | -11,311 | $0.899 | $10,169 |
| 2026-06-22 | LaPointe Christian | -7,794 | $0.9574 | $7,462 |
| 2026-06-22 | Vieceli John S. | -15,111 | $0.9574 | $14,467 |
| 2026-06-22 | Keyes Jeffry R. | -4,116 | $0.9574 | $3,941 |
| 2026-06-22 | Hawkins Jeffrey Alan | -11,310 | $0.9574 | $10,828 |
| 2026-05-18 | Jafri Amir | +251,185 | - | - |
| 2026-05-18 | Dowdy Paula | +251,185 | - | - |
| 2026-05-18 | Kenny John P. | +251,185 | - | - |
| 2026-05-18 | Kummeth Charles R. | +251,185 | - | - |
| 2026-05-18 | Mendel Scott | +251,185 | - | - |
| 2026-05-18 | Makes Brigid | +251,185 | - | - |
| 2026-05-18 | Fattori Ruth A | +251,185 | - | - |
| 2026-05-18 | RAKIN KEVIN | +251,185 | - | - |
| 2026-05-18 | ROTHBERG JONATHAN M | +251,185 | - | - |
| 2026-04-21 | Keyes Jeffry R. | -37,381 | $0.995 | $37,194 |
| 2026-04-21 | Hawkins Jeffrey Alan | -83,712 | $0.995 | $83,293 |
| 2026-04-20 | Keyes Jeffry R. | -37,382 | $1.0064 | $37,621 |
| 2026-04-20 | Hawkins Jeffrey Alan | -83,712 | $1.0064 | $84,248 |
| 2026-03-23 | LaPointe Christian | -6,110 | $0.8266 | $5,051 |
| 2026-03-23 | Vieceli John S. | -11,239 | $0.8266 | $9,290 |
| 2026-03-23 | Keyes Jeffry R. | -4,422 | $0.8266 | $3,655 |
| 2026-03-23 | Hawkins Jeffrey Alan | -12,149 | $0.8266 | $10,042 |
| 2026-03-20 | LaPointe Christian | -5,849 | $0.8483 | $4,962 |
| 2026-03-20 | Vieceli John S. | -10,758 | $0.8483 | $9,126 |
| 2026-03-20 | Keyes Jeffry R. | -4,233 | $0.8483 | $3,591 |
| 2026-03-20 | Hawkins Jeffrey Alan | -11,628 | $0.8483 | $9,864 |
| 2026-03-12 | Vieceli John S. | +468,508 | - | - |
| 2026-03-12 | Vieceli John S. | +391,681 | - | - |
| 2026-03-12 | LaPointe Christian | +312,339 | - | - |
| 2026-03-12 | LaPointe Christian | +261,121 | - | - |
| 2026-03-12 | Keyes Jeffry R. | +780,847 | - | - |
| 2026-03-12 | Keyes Jeffry R. | +652,803 | - | - |
| 2026-03-12 | Hawkins Jeffrey Alan | +1,561,695 | - | - |
| 2026-03-12 | Hawkins Jeffrey Alan | +1,305,606 | - | - |
| 2026-03-05 | Dowdy Paula | +109,890 | $0.9505 | $104,450 |
| 2026-03-05 | Kummeth Charles R. | +500,000 | $0.9196 | $459,800 |
| 2026-02-24 | Jafri Amir | +114,055 | - | - |
| 2025-12-22 | Vieceli John S. | -21,927 | $1.276 | $27,979 |
| 2025-12-22 | LaPointe Christian | -11,951 | $1.276 | $15,249 |
| 2025-12-22 | Keyes Jeffry R. | -8,627 | $1.276 | $11,008 |
| 2025-12-22 | Hawkins Jeffrey Alan | -23,707 | $1.276 | $30,250 |
| 2025-10-16 | ROTHBERG JONATHAN M | -26,095 | $3.07 | $80,112 |