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Quantum SI Logo
Quantum SI Growth Score
55
CB Rank
10681
Heat Score
59
Quantum SI offers Next Generation Protein Sequencing that makes diagnostics digital.
Founded
obfuscation
PublicPost-IPO Equity Guilford, Connecticut, United States101-250 www.quantum-si.com/
Biotechnology
Health Diagnostics
Life Science
Semiconductor
Overview

Quantum SI
Total Funding
obfuscation
Growth Score
55
Heat Score
59

Total Funding
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Post-IPO Equity raised
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Growth Score55
-6 pts
in past quarter
Heat Score 59
-6 pts
in past quarter

Company Performance Metrics

Score
Trend
AI Content may contain mistakes and is not legal, financial or investment advice.Learn more.
Growth Score - The measure of growth based on company activity, operational metrics, and investments
Growth Trend - The change in the growth score over the given time period
Heat Score - The measure of the market interest, media activity, and Crunchbase profile activity
Heat Trend - The change in the heat score over the given time period
Learn More >
Recent Milestones
Raised Funding Round
Jan 1, 1970
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Raised Funding Round
Jan 1, 1970
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See more interactive data and historical milestones on desktop for the best experience

About Quantum SI

CB Rank
10681
Quantum SI offers Next Generation Protein Sequencing that makes diagnostics digital.
Founded
obfuscation
PublicPost-IPO Equity Guilford, Connecticut, United States101-250 www.quantum-si.com/
Biotechnology
Health Diagnostics
Life Science
Semiconductor

Funding Rounds

Post-IPO Equity
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in
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Post-IPO Equity
OBF
in
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Post-IPO Equity
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in
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Key People

Details

Legal Name Quantum SI, Inc.
Operating Status Active
Stock Symbol  NASDAQ:QSI
Company Type For Profit
Founders  Daniel Fox, Jonathan Rothberg
About the Company

Quantum-Si is focused on revolutionizing the growing field of proteomics. The company’s suite of technologies are powered by a first-of-its-kind semiconductor chip designed to enable single-molecule next-generation protein sequencing and genomics, and digitize proteomic research in order to advance drug discovery and diagnostics beyond what has

been possible with DNA sequencing.

Phone Number +1 866-688-7374
Contact Email support@quantum-si.com
Predictions & Insights

Growth Insight

See this Growth Insight
Quantum SI is
Lorem
 to be growing
Top Contributing Factors
Financial Decline

Products & Services

Platinum® Pro
A benchtop protein sequencer that performs single-molecule protein sequencing with real-time kinetic data and customizable analysis for protein variant detection and identification.
V3 Sequencing Kit
A sequencing reagent kit that enhances protein sequencing by recognizing additional amino acids and improving peptide alignment and coverage.

Research & Development

Quantum SI is

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...

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Financials

Company Funding

Total Funding Amount 
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Number of Funding Rounds 4
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Funding Rounds

Total Funding Amount 
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Number of Funding Rounds 4
Unlock company funding data, including rounds, dates, amounts, and investors.
Announced Date  
Transaction Name  
Number of Investors  
Money Raised  
Lead Investors  
Funding Type  
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Investors

Unlock company funding data, including rounds, dates, amounts, and investors.
Investor Name  
Lead Investor  
Funding Round  
Partners  
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Investments

Number of Acquisitions 1

Investment Breakdown

Number of Acquisitions 1
Market Intelligence
People
View Profiles & Contacts
Headcount 101-250 Employee Profiles 9 Contacts 183

Employee Profiles

News

News and Press

News•May 8, 2026
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News•May 7, 2026
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News•Apr 28, 2026
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Access a complete feed of recent news and press, from product launches to leadership changes.
Technology
View Tech Report

Monthly Web Visits

4,841
-8.66%
 in past month

IT Spend

$257.8KThis year, Quantum SI is projected to spend $257.8K on IT, according to Aberdeen.

Interest Signals

TopicSurge Score
Livingetc Logo
Livingetc
99
21Vianet (VNET) Logo
21Vianet (VNET)
97
Generational Difference Logo
Generational Difference
97

Actively Used Products

22Quantum SI uses 22 technology products and services including HTML5, Lightbox, and  jQuery, according to G2 Stack.

Active Website Tech Count

49Quantum SI is actively using 49 technologies for its website, according to BuiltWith. These include HSTS, Apple Mobile Web Clips Icon, and  DNSSEC.

Total IP

271The intellectual property of Quantum SI includes 240 registered patents primarily in the 'Testing' category, according to IPqwery. Additionally, Quantum SI has registered 31 trademarks with the most popular class being 'Scientific and electric apparatus and instruments', according to IPqwery.
Sub-Organizations
Frequently Asked Questions

Where is Quantum SI's headquarters? Quantum SI is located in Guilford, Connecticut, United States.Who invested in Quantum SI? Quantum SI has 6 investors including Redmile Group and  ARK Investment Management.When was the last funding round for Quantum SI? Quantum SI closed its last funding round on
obfuscation
from a Post-IPO Equity round.Who are Quantum SI's competitors? Alternatives and possible competitors to Quantum SI may include Element Biosciences, Nautilus Biotechnology, and  Deepcell.How much funding has Quantum SI raised to date? Quantum SI has raised
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.
Who We Are
What We Do
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