Quantum-Si incorporated (QSI)

NASDAQ: QSI · Real-Time Price · USD
0.9142
+0.0139 (1.54%)
Apr 28, 2026, 11:58 AM EDT - Market open
Market Cap197.80M -7.7%
Revenue (ttm)2.44M -20.3%
Net Income-101.34M
EPS-0.51
Shares Out 216.37M
PE Ration/a
Forward PEn/a
Dividendn/a
Ex-Dividend Daten/a
Volume1,548,907
Open0.8900
Previous Close0.9003
Day's Range0.8853 - 0.9400
52-Week Range0.6912 - 3.1000
Beta3.09
AnalystsBuy
Price Target1.00 (+9.39%)
Earnings DateMay 7, 2026

About QSI

Quantum-Si incorporated, a life sciences company, develops proprietary, universal, and single-molecule detection platform applied to proteomics to enable next-gen protein sequencing (NGPS). The company offers Platinum and Platinum Pro NGPS instruments for single-molecule, amino acid level resolution, and automated data analysis; library preparation kits to prepare a customer’s protein sample for sequencing; and sequencing kits, which contain the reagents and consumables used to perform NGPS. It also provides Platinum analysis software, a cloud-... [Read more]

Sector Healthcare
Founded 2013
Employees 145
Stock Exchange NASDAQ
Ticker Symbol QSI
Full Company Profile

Financial Performance

In 2025, Quantum-Si incorporated's revenue was $2.44 million, a decrease of -20.34% compared to the previous year's $3.06 million. Losses were -$101.34 million, 0.33% more than in 2024.

Financial Statements

Analyst Summary

According to 2 analysts, the average rating for QSI stock is "Buy." The 12-month stock price target is $1.0, which is an increase of 9.39% from the latest price.

Price Target
$1.0
(9.39% upside)
Analyst Consensus: Buy
Stock Forecasts

News

Quantum-Si to Report First Quarter 2026 Financial Results on May 7, 2026

BRANFORD, Conn.--(BUSINESS WIRE)--Quantum-Si to Report First Quarter 2026 Financial Results on May 7, 2026.

12 days ago - Business Wire

Quantum-Si Announces Two Customer Posters to be Presented at the American Association of Cancer Research Annual Meeting

BRANFORD, Conn.--(BUSINESS WIRE)--Quantum-Si Announces Two Customer Posters to be Presented at the American Association of Cancer Research Annual Meeting.

13 days ago - Business Wire

Quantum-Si Announces New Manuscript Demonstrating the Value of Single-molecule Protein Sequencing to Aid in Identifying New Cancer Treatment Strategies

BRANFORD, Conn.--(BUSINESS WIRE)--Quantum-Si Announces New Manuscript Demonstrating Value of Single-molecule Protein Sequencing to Aid in Identifying New Cancer Treatment Strategies.

14 days ago - Business Wire

Quantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4)

BRANFORD, Conn.--(BUSINESS WIRE)--Quantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4).

17 days ago - Business Wire

Quantum-Si Announces First Customer Samples Tested on the Proteus™ Prototype System

BRANFORD, Conn.--(BUSINESS WIRE)--Quantum-Si Announces First Customer Samples Tested on the Proteus™ Prototype System.

20 days ago - Business Wire

Quantum-Si Announces the Start of the Proteus™ Roadshow

BRANFORD, Conn.--(BUSINESS WIRE)--Quantum-Si Announces the Start of the Proteus™ Roadshow.

22 days ago - Business Wire

Quantum-Si Shares Slip After Q4 Revenue Miss

Quantum-Si, Inc. (NASDAQ: QSI) shares moved lower in Tuesday's extended trading after the company released its fourth-quarter earnings report, missing Street revenue estimates.

7 weeks ago - Benzinga

Quantum-Si incorporated Earnings Call Transcript: Q4 2025

2026 will be a transition year with revenue mainly from consumables, limited new instrument sales, and a focus on preparing for the Proteus launch. Financial discipline is maintained, with strong cash reserves and lower gross margins expected due to revenue mix.

7 weeks ago - Transcripts

Quantum-Si Reports Fourth Quarter and Full Year 2025 Financial Results

BRANFORD, Conn.--(BUSINESS WIRE)--Quantum-Si Reports Fourth Quarter and Full Year 2025 Financial Results.

7 weeks ago - Business Wire

Quantum-Si to Report Fourth Quarter and Full Year 2025 Financial Results on March 3, 2026

BRANFORD, Conn.--(BUSINESS WIRE)--Quantum-Si to Report Fourth Quarter and Full Year 2025 Financial Results on March 3, 2026.

2 months ago - Business Wire

Quantum-Si Announces the Release of Two New Manuscripts Demonstrating the Value of Single-Molecule Protein Sequencing in Clinical Proteomics and Pathogen & Toxin Detection

BRANFORD, Conn.--(BUSINESS WIRE)--Quantum-Si Announces the Release of Two New Manuscripts.

2 months ago - Business Wire

Quantum-Si Announces Launch of New Version 3 Library Preparation Kit and a Suite of Data Analysis Tool Enhancements

BRANFORD, Conn.--(BUSINESS WIRE)--Quantum-Si Announces Launch of New Version 3 Library Preparation Kit and a Suite of Data Analysis Tool Enhancements.

4 months ago - Business Wire

Quantum-Si incorporated Transcript: CG MedTech, Diagnostics and Digital Health & Services Forum

Proteus, a next-generation protein sequencing platform, is on track for a 2026 launch, offering major architectural advances for scalability and cost efficiency. Early data show performance exceeding current systems, with commercialization strategies and financial resources in place to support growth.

5 months ago - Transcripts

Quantum-Si Highlights Significant Development Advancements for Proteus™ and Industry Leading Technology Pipeline at Investor & Analyst Day

BRANFORD, Conn.--(BUSINESS WIRE)--Quantum-Si Highlights Significant Development Advancements for ProteusTM and Industry Leading Technology Pipeline at Investor & Analyst Day.

5 months ago - Business Wire

Quantum-Si incorporated Transcript: Investor Day 2025

Proteus introduces a scalable, automated protein sequencing platform with a roadmap to detect all 20 amino acids and broad PTM coverage by 2027. The system targets high-value applications, offers lower cost and higher throughput, and is set for commercial launch at the end of 2026, with early access and upgrade programs planned.

5 months ago - Transcripts

Quantum-Si to Highlight Significant Proteus™ Platform Development Progress and Provide Insights into the Company's Industry Leading Technology Pipeline at Investor & Analyst Day

BRANFORD, Conn.--(BUSINESS WIRE)--QSI to Highlight Significant Proteus™ Platform Dev Progress & Provide Insights into Company's Industry Leading Tech Pipeline at Investor & Analyst Day.

5 months ago - Business Wire

Quantum-Si incorporated Earnings Call Transcript: Q3 2025

Q3 2025 revenue was $552,000, with gross margin at 35% and continued capital market headwinds, especially in academia. Strategic placements expanded the install base, and the Proteus platform reached a key prototype milestone. Cash and investments stood at $230.5 million.

6 months ago - Transcripts

Quantum-Si Reports Third Quarter 2025 Financial Results

BRANFORD, Conn.--(BUSINESS WIRE)--Quantum-Si Reports Third Quarter 2025 Financial Results. Announces Successful Sequencing on Prototype Proteus Unit, Development Program is On-Track.

6 months ago - Business Wire

Quantum-Si to Participate in the Canaccord Genuity MedTech, Diagnostics and Digital Health & Services Forum

BRANFORD, Conn.--(BUSINESS WIRE)--Quantum-Si to Participate in the Canaccord Genuity MedTech, Diagnostics and Digital Health & Services Forum.

6 months ago - Business Wire

Quantum-Si to Report Third Quarter 2025 Financial Results on November 5, 2025

BRANFORD, Conn.--(BUSINESS WIRE)--Quantum-Si to Report Third Quarter 2025 Financial Results on November 5, 2025.

7 months ago - Business Wire

Quantum-Si to Host Investor & Analyst Event in New York City on November 19, 2025

BRANFORD, Conn--(BUSINESS WIRE)--Quantum-Si to Host Investor & Analyst Event in New York City on November 19, 2025.

7 months ago - Business Wire

Quantum-Si incorporated Transcript: H.C. Wainwright 27th Annual Global Investment Conference

The event highlighted progress on the Proteus platform, targeting a prototype by year-end and commercial launch next year. Market expansion into biopharma and government sectors, ongoing product and software innovation, and a strong financial position with disciplined spending were emphasized.

8 months ago - Transcripts

Quantum-Si Announces the Launch of V4 Sequencing Kit, Expanding Proteome Coverage and Unlocking New Applications for Protein Sequencing

BRANFORD, Conn.--(BUSINESS WIRE)--Quantum-Si Announces the Launch of V4 Sequencing Kit, Expanding Proteome Coverage and Unlocking New Applications for Protein Sequencing.

8 months ago - Business Wire

Quantum-Si to Participate in the H.C. Wainwright 27th Annual Global Investment Conference

BRANFORD, Conn.--(BUSINESS WIRE)--Quantum-Si to Participate in the H.C. Wainwright 27th Annual Global Investment Conference.

9 months ago - Business Wire

Quantum-Si incorporated Transcript: UBS Precision Medicine Frontiers Summit Conference

Panelists highlighted breakthroughs in proteomics and flow cytometry, enabling new research and clinical applications. Strategic adoption, robust pipelines, and AI integration are driving growth despite market challenges, with next-gen platforms and global clinical expansion underway.

9 months ago - Transcripts