Quantum-Si (QSI)


Market Price (10/9/2026): $1.23 | Market Cap: $267.9 MilSector: Health Care | Industry: Life Sciences Tools & Services

Quantum-Si (QSI)


Market Price (10/9/2026): $1.23
Market Cap: $267.9 Mil
Sector: Health Care
Industry: Life Sciences Tools & Services

Investment Highlights Why It Matters Detailed financial logic regarding cash flow yields vs trend-riding momentum.

0

Cash is significant % of market cap
Net D/ENet Debt/Equity. Debt net of cash. Negative indicates net cash. Equity is taken as the Market Capitalization is -41%

Megatrend and thematic drivers
Megatrends include Biotechnology & Genomics, and Precision Medicine. Themes include Advanced Diagnostics, Personalized Diagnostics, Show more.

Weak multi-year price returns
3Y Excs Rtn is -103%

Meaningful short interest
Short Interest Days-to-CoverDTC = (Short Interest Share Quantity) / (Average Daily Trading Volume). Reflects how many days it would take to cover (close out) the short interest based on average volumes. High DTC can signify an increased risk of a short squeeze. is 10.32

Not profitable at operating income level
Op Inc LTMOperating Income, Last Twelve Months is -95 Mil, Op Mgn LTMOperating Margin = Operating Income / Revenue Reflects profitability before taxes and before impact of capital structure (interest payments). is -5930%

Expensive valuation multiples
P/SPrice/Sales ratio is 166x

Weak revenue growth
Rev Chg LTMRevenue Change % Last Twelve Months (LTM) is -53%, Rev Chg QQuarterly Revenue Change % is -42%

Significant share based compensation
SBC/Rev LTMShare Based Compensation / Revenue (Sales), Last Twelve Months (LTM) is 693%

Not cash flow generative
CFO/Rev LTMCash Flow from Operations / Revenue (Sales), Last Twelve Months (LTM) is -5760%, FCF/Rev LTMFree Cash Flow / Revenue (Sales), Last Twelve Months (LTM) is -5838%

Valuation getting more expensive
P/S 6M Chg %Price/Sales change over 6 months. Declining P/S indicates valuation has become less expensive. is 83%

Yield minus risk free rate is negative
ERPEquity Risk Premium (ERP) = Total Yield - Risk Free Rate, Reflects the premium above risk free assets offered by the investment. is -41%

Key risks
QSI key risks include [1] a history of significant financial losses and high cash burn since its formation, Show more.

0 Cash is significant % of market cap
Net D/ENet Debt/Equity. Debt net of cash. Negative indicates net cash. Equity is taken as the Market Capitalization is -41%
1 Megatrend and thematic drivers
Megatrends include Biotechnology & Genomics, and Precision Medicine. Themes include Advanced Diagnostics, Personalized Diagnostics, Show more.
2 Weak multi-year price returns
3Y Excs Rtn is -103%
3 Meaningful short interest
Short Interest Days-to-CoverDTC = (Short Interest Share Quantity) / (Average Daily Trading Volume). Reflects how many days it would take to cover (close out) the short interest based on average volumes. High DTC can signify an increased risk of a short squeeze. is 10.32
4 Not profitable at operating income level
Op Inc LTMOperating Income, Last Twelve Months is -95 Mil, Op Mgn LTMOperating Margin = Operating Income / Revenue Reflects profitability before taxes and before impact of capital structure (interest payments). is -5930%
5 Expensive valuation multiples
P/SPrice/Sales ratio is 166x
6 Weak revenue growth
Rev Chg LTMRevenue Change % Last Twelve Months (LTM) is -53%, Rev Chg QQuarterly Revenue Change % is -42%
7 Significant share based compensation
SBC/Rev LTMShare Based Compensation / Revenue (Sales), Last Twelve Months (LTM) is 693%
8 Not cash flow generative
CFO/Rev LTMCash Flow from Operations / Revenue (Sales), Last Twelve Months (LTM) is -5760%, FCF/Rev LTMFree Cash Flow / Revenue (Sales), Last Twelve Months (LTM) is -5838%
9 Valuation getting more expensive
P/S 6M Chg %Price/Sales change over 6 months. Declining P/S indicates valuation has become less expensive. is 83%
10 Yield minus risk free rate is negative
ERPEquity Risk Premium (ERP) = Total Yield - Risk Free Rate, Reflects the premium above risk free assets offered by the investment. is -41%
11 Key risks
QSI key risks include [1] a history of significant financial losses and high cash burn since its formation, Show more.

QSI in ETFs

Weight = QSI's share of each fund

VTI0.00%
ITOT0.00%
IBB0.02%
VHT0.00%

Valuation & Metrics

Price Chart

Why The Stock Moved

Qualitative Assessment

AI Analysis | Feedback

Updated on 10/6/2026

Quantum-Si (QSI) stock has gained about 40% since 6/30/2026 because of the following key factors:

1. Strong Progress and Superior Performance of the Proteus™ Platform.

Quantum-Si announced significant advancements for its next-generation Proteus™ protein sequencing platform in September 2026. On September 15, 2026, the company reported the successful detection of 18 amino acids using a developmental sequencing kit on integrated Proteus™ instruments, reiterating its target to detect all 20 amino acids by the end of 2026. Further bolstering confidence, interim data presented at the World HUPO 2026 conference on September 28, 2026, demonstrated that Proteus™ significantly outperformed the current Platinum® Pro system. Studies showed Proteus™ achieved a median of 30 times more alignments per single chamber and a 1.36% median false discovery rate, compared to 6.58% for Platinum® Pro. The company projects approximately 60 times more alignments from a full four-chamber Proteus™ run than a two-chamber Platinum® Pro run, indicating substantial gains in throughput and accuracy despite a revised commercial launch timeline to fiscal Q2 2027.

2. Better-than-Expected Fiscal Q2 2026 Financial Results and Extended Cash Runway.

Quantum-Si reported its fiscal Q2 2026 financial results on August 13, 2026, surpassing analyst expectations for both earnings per share (EPS) and revenue. The company reported a loss of $0.11 per share, meeting consensus estimates, and revenue of $0.34 million, exceeding the consensus estimate of $0.30 million. The net loss for the quarter also narrowed to $23.5 million from $28.8 million in fiscal Q2 2025. Critically, Quantum-Si announced a cost-reduction initiative involving a 20% workforce reduction, which is anticipated to yield approximately $12 million in annual operating expense savings and extend the company's cash runway into fiscal Q4 2028 from the previous projection of fiscal Q2 2028. These measures provided financial stability and a clearer path for future development amidst the Proteus™ launch delay.

Show more
Updated on 10/6/2026

Quantum-Si (QSI) stock has gained about 40% since 6/30/2026 because of the following key factors:

1. Strong Progress and Superior Performance of the Proteus™ Platform.

Quantum-Si announced significant advancements for its next-generation Proteus™ protein sequencing platform in September 2026. On September 15, 2026, the company reported the successful detection of 18 amino acids using a developmental sequencing kit on integrated Proteus™ instruments, reiterating its target to detect all 20 amino acids by the end of 2026. Further bolstering confidence, interim data presented at the World HUPO 2026 conference on September 28, 2026, demonstrated that Proteus™ significantly outperformed the current Platinum® Pro system. Studies showed Proteus™ achieved a median of 30 times more alignments per single chamber and a 1.36% median false discovery rate, compared to 6.58% for Platinum® Pro. The company projects approximately 60 times more alignments from a full four-chamber Proteus™ run than a two-chamber Platinum® Pro run, indicating substantial gains in throughput and accuracy despite a revised commercial launch timeline to fiscal Q2 2027.

2. Better-than-Expected Fiscal Q2 2026 Financial Results and Extended Cash Runway.

Quantum-Si reported its fiscal Q2 2026 financial results on August 13, 2026, surpassing analyst expectations for both earnings per share (EPS) and revenue. The company reported a loss of $0.11 per share, meeting consensus estimates, and revenue of $0.34 million, exceeding the consensus estimate of $0.30 million. The net loss for the quarter also narrowed to $23.5 million from $28.8 million in fiscal Q2 2025. Critically, Quantum-Si announced a cost-reduction initiative involving a 20% workforce reduction, which is anticipated to yield approximately $12 million in annual operating expense savings and extend the company's cash runway into fiscal Q4 2028 from the previous projection of fiscal Q2 2028. These measures provided financial stability and a clearer path for future development amidst the Proteus™ launch delay.

3. Positive Analyst Sentiment and Strategic Market Engagement.

Investor confidence was further buoyed by positive analyst coverage and the company's proactive market engagement. On September 29, 2026, H.C. Wainwright reissued a "buy" rating on Quantum-Si stock, setting an ambitious price target of $4.00, representing a potential upside of 186.74%. Additionally, Wall Street Zen upgraded Quantum-Si from a "sell" to a "hold" rating on September 12, 2026. Concurrently, in September 2026, Quantum-Si expanded its Proteus™ roadshow to various cities across the U.S. and Europe. This initiative aimed to educate researchers and cultivate a customer pipeline in anticipation of the full commercial launch of the Proteus™ platform. The combination of favorable analyst outlooks and direct customer engagement contributed to the positive stock trend.

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Stock Movement Drivers

Fundamental Drivers

The 37.9% change in QSI stock from 6/30/2026 to 10/8/2026 was primarily driven by a 60.0% change in the company's P/S Multiple.
(LTM values as of)630202610082026Change
Stock Price ($)0.891.2237.9%
Change Contribution By: 
Total Revenues ($ Mil)22-13.3%
P/S Multiple103.4165.660.0%
Shares Outstanding (Mil)216218-0.6%
Cumulative Contribution37.9%

LTM = Last Twelve Months as of date shown

Market Drivers

6/30/2026 to 10/8/2026
ReturnCorrelation
QSI37.9% 
Market (SPY)3.6%20.0%
Sector (XLV)6.0%-8.0%

Fundamental Drivers

The 57.6% change in QSI stock from 3/31/2026 to 10/8/2026 was primarily driven by a 141.5% change in the company's P/S Multiple.
(LTM values as of)331202610082026Change
Stock Price ($)0.771.2257.6%
Change Contribution By: 
Total Revenues ($ Mil)22-34.1%
P/S Multiple68.6165.6141.5%
Shares Outstanding (Mil)216218-0.9%
Cumulative Contribution57.6%

LTM = Last Twelve Months as of date shown

Market Drivers

3/31/2026 to 10/8/2026
ReturnCorrelation
QSI57.6% 
Market (SPY)19.3%37.4%
Sector (XLV)15.2%4.4%

Fundamental Drivers

The -13.5% change in QSI stock from 9/30/2025 to 10/8/2026 was primarily driven by a -53.0% change in the company's Total Revenues ($ Mil).
(LTM values as of)930202510082026Change
Stock Price ($)1.411.22-13.5%
Change Contribution By: 
Total Revenues ($ Mil)32-53.0%
P/S Multiple75.9165.6118.2%
Shares Outstanding (Mil)184218-15.7%
Cumulative Contribution-13.5%

LTM = Last Twelve Months as of date shown

Market Drivers

9/30/2025 to 10/8/2026
ReturnCorrelation
QSI-13.5% 
Market (SPY)17.1%45.4%
Sector (XLV)22.4%9.7%

Fundamental Drivers

The -26.5% change in QSI stock from 9/30/2023 to 10/8/2026 was primarily driven by a -67.7% change in the company's P/S Multiple.
(LTM values as of)930202310082026Change
Stock Price ($)1.661.22-26.5%
Change Contribution By: 
Total Revenues ($ Mil)02249.7%
P/S Multiple511.8165.6-67.7%
Shares Outstanding (Mil)142218-35.0%
Cumulative Contribution-26.5%

LTM = Last Twelve Months as of date shown

Market Drivers

9/30/2023 to 10/8/2026
ReturnCorrelation
QSI-26.5% 
Market (SPY)87.3%26.2%
Sector (XLV)36.8%16.7%

Return vs. Risk

Price Returns Compared

 202120222023202420252026Total [1]
Returns
QSI Return-22%-77%10%34%-59%16%-87%
Peers Return-25%-64%8%-36%2%107%-61%
S&P 500 Return27%-19%24%23%16%14%108%

Monthly Win Rates [3]
QSI Win Rate42%25%50%42%33%60% 
Peers Win Rate47%32%48%38%43%56% 
S&P 500 Win Rate75%42%67%75%67%50% 

Max Drawdowns [4]
QSI Max Drawdown-75%-78%-71%-72%-77%-46% 
Peers Max Drawdown-51%-74%-57%-54%-53%-43% 
S&P 500 Max Drawdown-5%-25%-10%-8%-19%-9% 


[1] Cumulative total returns since the beginning of 2021
[2] Peers: NAUT, SEER, PACB, TXG, ILMN.
[3] Win Rate = % of calendar months in which monthly returns were positive
[4] Max drawdown represents maximum peak-to-trough decline within a year
[5] 2026 data is for the year up to 10/8/2026 (YTD)

How Low Can It Go

EventQSIS&P 500
2025 US Tariff Shock
  % Loss-43.5%-18.8%
  % Gain to Breakeven76.9%23.1%
  Time to Breakeven45 days79 days
Summer-Fall 2023 Five Percent Yield Shock
  % Loss-61.7%-9.5%
  % Gain to Breakeven161.1%10.5%
  Time to Breakeven427 days24 days
2023 SVB Regional Banking Crisis
  % Loss-33.3%-6.7%
  % Gain to Breakeven50.0%7.1%
  Time to Breakeven55 days31 days

Compare to NAUT, SEER, PACB, TXG, ILMN

In The Past

Quantum-Si's stock fell -43.5% during the 2025 US Tariff Shock. Such a loss loss requires a 76.9% gain to breakeven.

Preserve Wealth

Limiting losses and compounding gains is essential to preserving wealth.

Asset Allocation

Actively managed asset allocation strategies protect wealth. Learn more.

EventQSIS&P 500
2025 US Tariff Shock
  % Loss-43.5%-18.8%
  % Gain to Breakeven76.9%23.1%
  Time to Breakeven45 days79 days
Summer-Fall 2023 Five Percent Yield Shock
  % Loss-61.7%-9.5%
  % Gain to Breakeven161.1%10.5%
  Time to Breakeven427 days24 days
2023 SVB Regional Banking Crisis
  % Loss-33.3%-6.7%
  % Gain to Breakeven50.0%7.1%
  Time to Breakeven55 days31 days

Compare to NAUT, SEER, PACB, TXG, ILMN

In The Past

Quantum-Si's stock fell -43.5% during the 2025 US Tariff Shock. Such a loss loss requires a 76.9% gain to breakeven.

Preserve Wealth

Limiting losses and compounding gains is essential to preserving wealth.

Asset Allocation

Actively managed asset allocation strategies protect wealth. Learn more.

About Quantum-Si (QSI)

Quantum-Si (QSI) is a life sciences company that has developed a proprietary single molecule detection platform. This innovative technology provides advanced capabilities for sample preparation and sequencing, allowing for the precise analysis of individual molecules. The company's main offering is this platform, which is designed to enable next-generation protein sequencing.

Leveraging technology initially rooted in the semiconductor industry, Quantum-Si has adapted its platform to the field of proteomics. By facilitating advanced protein sequencing, Quantum-Si serves various sectors within the life sciences, including academic research, biotechnology, and potentially pharmaceutical and diagnostic companies, all of which require detailed and high-resolution protein analysis for discovery and development.

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Illumina for proteins

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  • Single Molecule Detection Platform: A proprietary platform designed for single molecule detection, enabling next-generation protein sequencing for use in proteomics and other life science applications.

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Quantum-Si (QSI) primarily sells its advanced single-molecule detection platforms and sequencing technology to other organizations rather than individual consumers. Given the nature of their proprietary platform for next-generation protein sequencing and its application in fields like proteomics, their major customers are typically within the scientific research and life sciences sectors.

The company's primary customer categories include:

  1. Academic and Government Research Institutions: Universities, national laboratories, and other publicly funded research organizations that conduct fundamental and applied research in life sciences, proteomics, and biotechnology. These institutions are often early adopters of cutting-edge scientific instrumentation.
  2. Biopharmaceutical Companies: Pharmaceutical and biotechnology firms engaged in drug discovery, development, biomarker identification, target validation, and other R&D activities where detailed protein analysis and sequencing are crucial.
  3. Contract Research Organizations (CROs): Companies that provide specialized research services, including advanced analytical and sequencing services, to biopharmaceutical companies and other clients.

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Jeff Hawkins, President and Chief Executive Officer

Jeff Hawkins joined Quantum-Si in October 2022. Prior to this role, he served as President and CEO of Truvian Sciences, Inc., where he was responsible for leading the evolution of the company's benchtop blood testing system from concept through late-stage development. Before his tenure at Truvian, Mr. Hawkins led the Reproductive and Genetic Health Business Unit at Illumina, Inc., overseeing the rapid global growth of next-generation sequencing in various markets. He brings over 20 years of experience from leading life science and diagnostics companies and is a co-inventor on 10 issued or pending patents.

Jeff Keyes, Chief Financial Officer

Jeff Keyes serves as the Chief Financial Officer of Quantum-Si. No additional background information regarding founding or managing other companies, selling companies, or a pattern of managing private equity-backed companies is available in the provided search results.

Christian LaPointe, PhD, General Counsel

Christian LaPointe, PhD, has been Quantum-Si's General Counsel since November 2020. Before joining Quantum-Si, Dr. LaPointe held positions as General Counsel at ArcherDX, Inc., a genomics company, and also at Celsee, Inc., a single cell analysis solutions provider.

Todd Rearick, Chief Technology Officer

Todd Rearick has held the position of Chief Technology Officer at Quantum-Si since January 2019. His previous experience includes serving as Chief Technology Officer at Hyperfine Research and holding various roles at Life Technologies and Ion Torrent.

John Vieceli, PhD, Chief Product Officer

John Vieceli, PhD, joined Quantum-Si in December 2022 and currently leads Product Development and Operations. He possesses nearly two decades of experience in building technical teams and successfully bringing early-stage technology to market. Dr. Vieceli previously held leadership roles at several next-generation DNA sequencing companies, including Illumina, Omniome, and Pacific Biosciences.

AI Analysis | Feedback

The key risks to Quantum-Si (QSI) include:

  1. High Cash Burn and Limited Commercial Traction: Quantum-Si is characterized by significant negative operating cash flow, substantial net losses, and modest revenue, indicating a high cash burn rate as it remains in a heavy investment phase. This raises concerns about achieving widespread market adoption and a clear path to profitability despite a current cash runway.

  2. Execution Risk for New Platforms and Market Adoption Challenges: The company's long-term value is heavily dependent on the successful commercialization and widespread adoption of its proprietary technology, including upcoming platforms like Proteus. There is a risk of slower-than-anticipated market uptake, technical setbacks during the development cycle, or supply chain issues. Challenges in the U.S. academic market due to uncertainties in NIH funding are also impacting sales.

  3. Competition and Potential Dilution: Quantum-Si operates in a competitive landscape with established companies that may possess greater financial and marketing resources. While the company currently has a strong cash position, continued losses and high operating expenses could necessitate future capital raises, which would risk diluting existing shareholders.

AI Analysis | Feedback

The clear emerging threat to Quantum-Si is the potential expansion of companies like Oxford Nanopore Technologies into robust, commercially viable single-molecule protein sequencing. Oxford Nanopore Technologies, a leader in real-time DNA/RNA sequencing via nanopores, possesses a core technology (nanopore detection) that is inherently capable of single-molecule analysis. Should they successfully adapt and commercialize their platform for high-throughput, accurate protein sequencing, it would directly compete with Quantum-Si's proprietary single-molecule detection platform designed for next-generation protein sequencing, potentially offering an alternative or superior method that could capture significant market share.

AI Analysis | Feedback

Quantum-Si (symbol: QSI) operates within substantial addressable markets related to proteomics and next-generation protein sequencing.

The total addressable market (TAM) for proteomics is estimated to be approximately $75 billion globally. Another estimate places the global proteomics market at $32.4 billion in 2022, with a projection to reach $72.9 billion by 2028, growing at a compound annual growth rate (CAGR) of 14.6%. The protein sequencing field as a whole is also projected to be a seventy-billion-dollar market.

More specifically, the global protein sequencing market was valued at approximately $2.29 billion in 2025 and is projected to grow to $3.45 billion by 2034, demonstrating a CAGR of 4.72%. North America held the largest share of this market, accounting for 41.48% in 2025, with the U.S. market alone estimated at $0.88 billion in the same year. Other sources estimate the global protein sequencing market at USD 1.39 billion in 2023, growing at a CAGR of 3.7% from 2024 to 2030, with North America leading with a 36.3% revenue share in 2023. Additionally, a report forecasts the protein sequencing market to grow from USD 1.67 billion in 2025 to USD 2.16 billion by 2031 with a 4.35% CAGR, noting North America's 43.12% market share in 2025.

While next-generation sequencing (NGS) is a broader category, it is relevant as Quantum-Si's technology involves next-generation protein sequencing (NGPS). The global next-generation sequencing market size is valued at $15.53 billion in 2025 and is expected to reach around $60.33 billion by 2034. North America was identified as the largest market in 2024 within the broader NGS market.

AI Analysis | Feedback

Quantum-Si (QSI) is focused on several key drivers to accelerate its revenue growth over the next 2-3 years, primarily centered around the commercialization and expansion of its innovative protein sequencing platforms and related consumables.

  1. Increased Commercial Adoption of the Platinum Pro System and Instrument Placement Programs: Quantum-Si's strategy involves actively placing its Platinum Pro system in research labs, particularly within the biopharmaceutical and academic sectors. This approach aims to build an installed base that will generate recurring revenue from consumable kits and drive further scientific publications demonstrating the platform's utility.
  2. Growth in Consumable Revenue from the Expanding Installed Base: A significant portion of future revenue growth is expected to come from the increased utilization and sales of consumable kits as more Platinum Pro instruments are placed and actively used by customers. The company anticipates a focus on consumable utilization, especially in 2026, as a crucial step before the full commercial ramp of its next-generation platform.
  3. Successful Launch and Commercialization of the Proteus Platform: The anticipated launch of the Proteus system, a next-generation protein sequencing technology expected to outperform its predecessor, is a major driver for future revenue. While 2026 is projected as a transition year with limited new capital sales, the company aims for a strong commercial ramp of Proteus in 2027 and beyond, following its expected launch by the end of 2026.
  4. Expansion of International Distribution and Focus on Pharma/Biotech Markets: Quantum-Si has been strategically expanding its international distribution network, which included 23 partners as of the first quarter of 2025, and has a key North American distribution agreement with Avantor. The company is also specifically targeting the pharmaceutical and biotech industries, where it has seen a doubling of its opportunity pipeline, indicating a strong growth area.
  5. Introduction of New Sequencing and Library Preparation Kits: The development and launch of enhanced product offerings, such as the version 4 Sequencing Kit (expected Q3 2025) and a new version 3 Library Preparation Kit (expected end of 2025), are expected to broaden the capabilities of Quantum-Si's platforms. These innovations are designed to improve proteome coverage and amino acid detection, thereby increasing the appeal of their technology and driving additional consumable sales.

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Share Issuance

  • Quantum-Si completed a business combination with HighCape Capital Acquisition Corp., a special purpose acquisition company (SPAC), in June 2021. The transaction was valued at approximately $1.46 billion and was expected to generate up to $514 million in gross proceeds.
  • As part of the SPAC merger, Quantum-Si secured an oversubscribed $425 million Private Investment in Public Equity (PIPE) from institutional investors.
  • Between the fourth quarter of 2024 and the first week of 2025, the company raised over $86 million in capital.

Inbound Investments

  • The merger with HighCape Capital Acquisition Corp. (SPAC) represented a significant inbound investment, providing over $500 million to fund Quantum-Si's development and commercialization.
  • The $425 million PIPE that was part of the SPAC transaction saw investments from leading institutional firms including Foresite Capital Management, Eldridge, and accounts advised by ARK Invest.

Capital Expenditures

  • In the most recent 12-month period (relative to late 2024/early 2025), capital expenditures amounted to -$2.52 million.
  • Operating expenses in 2023 were reduced compared to 2022, with a strategic focus on efficient capital deployment towards research and development projects, alongside building commercial capabilities.
  • The company anticipates 2026 to be a transition year, with capital focused on preparing for the launch of its Proteus platform.

Better Bets vs. Quantum-Si (QSI)

Peer Outperformance in Life Sciences Tools & Services

QSI has trailed 63% of its 108 Life Sciences Tools & Services peers over 5Y. Life Sciences Tools & Services ranks 8th of 10 industries in Health Care by median 5Y return. The sector’s gains have largely come from elsewhere.
Share of Life Sciences Tools & Services constituents that QSI has outperformed, by holding period. Peers without a full price history over a given window are excluded from that window.
1Y
39%
of 126 industry peers · -31.1% return
3Y
50%
of 116 industry peers · -14.7% return
5Y
37%
of 108 industry peers · -85.4% return
No Life Sciences Tools & Services peer with a comparable growth profile has beaten QSI by more than 20pp over 5Y.
Median price return by industry across the Health Care sector, ranked by 5Y. Life Sciences Tools & Services is QSI's own industry. Use this to see which corners of the sector have carried the returns.
Industry Names 1Y med3Y med5Y med Top 3 by 5Y
Health Care Distributors 6 13.9%45.7%94.9% CAH 443% · MCK 376% · COR 184%
Health Care Services 20 21.0%35.1%10.5% HIMS 280% · RDNT 141% · DGX 79%
Health Care Facilities 24 -0.8%5.1%4.8% THC 321% · NHC 279% · ENSG 139%
Managed Health Care 8 22.1%-7.9%-0.1% OSCR 123% · HQY 44% · ELV 12%
Health Care Equipment 50 -8.0%-3.8%-17.3% POCI 11563% · UFPT 346% · GKOS 257%
Pharmaceuticals 62 -10.6%0.2%-30.4% INDV 1090% · ETON 997% · LQDA 926%
Health Care Supplies 12 20.5%-8.5%-37.1% LNTH 322% · HAE 77% · MMSI 18%
Life Sciences Tools & Services ← 109 -10.9%-14.7%-64.2% SNWV 2286% · NTRA 243% · MEDP 219%
Biotechnology 364 -22.1%-23.8%-80.1% CELZ 1129% · DNTH 1093% · TRVI 969%
Health Care Technology 21 -38.6%-60.0%-82.5% SPOK 80% · HSTM 16% · VEEV -1%
Median of constituents with a full price history over each window. Top names are unfiltered by size in this render.

Latest Trefis Analyses

TitleDate
0DASHBOARDS 
1Quantum-Si Earnings Notes12/16/2025
2How Low Can Quantum-Si Stock Really Go?10/17/2025
Title
0ARTICLES

Recent Active Movers

Peer Comparisons

Peers to compare with:

Financials

QSINAUTSEERPACBTXGILMNMedian
NameQuantum-.Nautilus.Seer Pacific .10x Geno.Illumina  
Mkt Price1.592.262.232.3882.44271.942.32
Mkt Cap0.30.30.10.710.741.10.5
Rev LTM20141596174,49387
Op Inc LTM-95-63-71-179-92892-81
FCF LTM-94-52-44-131121931-48
FCF 3Y Avg-93-56-51-18348773-53
CFO LTM-92-50-43-1181271,095-47
CFO 3Y Avg-90-54-47-17362923-50

Growth & Margins

QSINAUTSEERPACBTXGILMNMedian
NameQuantum-.Nautilus.Seer Pacific .10x Geno.Illumina  
Rev Chg LTM-53.0%--13.9%2.0%-4.3%4.9%-4.3%
Rev Chg 3Y Avg106.1%--2.2%4.6%3.0%0.3%3.0%
Rev Chg Q-41.8%--23.7%-1.9%-12.6%9.4%-12.6%
QoQ Delta Rev Chg LTM-13.3%--6.3%-0.5%-3.4%2.3%-3.4%
Op Inc Chg LTM14.0%16.3%20.5%70.4%39.0%8.3%18.4%
Op Inc Chg 3Y Avg5.3%2.2%12.2%-7.6%17.7%675.4%8.7%
Op Mgn LTM-5,929.7%-627,830.0%-515.1%-112.3%-14.9%19.9%-313.7%
Op Mgn 3Y Avg-5,111.3%--595.8%-223.6%-22.9%13.4%-223.6%
QoQ Delta Op Mgn LTM-729.9%--7.5%-0.4%-2.4%0.3%-2.4%
CFO/Rev LTM-5,760.0%-502,350.0%-315.5%-74.1%20.6%24.4%-194.8%
CFO/Rev 3Y Avg-4,471.1%--320.1%-101.2%9.9%21.0%-101.2%
FCF/Rev LTM-5,838.3%-518,610.0%-321.7%-82.0%19.7%20.7%-201.8%
FCF/Rev 3Y Avg-4,607.4%--348.2%-107.1%7.7%17.6%-107.1%

Valuation

QSINAUTSEERPACBTXGILMNMedian
NameQuantum-.Nautilus.Seer Pacific .10x Geno.Illumina  
Mkt Cap0.30.30.10.710.741.10.5
P/S216.428,732.78.94.717.49.113.3
P/Op Inc-3.7-4.6-1.7-4.1-116.846.0-3.9
P/EBIT-3.7-4.6-1.7-6.0-649.636.9-4.1
P/E-3.5-5.1-1.8-5.6-142.649.8-4.3
P/CFO-3.8-5.7-2.8-6.384.337.5-3.3
Total Yield-37.1%-24.4%-56.8%-18.4%-0.7%2.1%-21.4%
Dividend Yield0.0%0.0%0.0%0.0%0.0%0.0%0.0%
FCF Yield 3Y Avg-44.8%-34.6%-47.2%-45.8%1.7%4.2%-39.7%
D/E0.00.10.21.00.00.10.1
Net D/E-0.3-0.2-1.10.6-0.00.0-0.1

Returns

QSINAUTSEERPACBTXGILMNMedian
NameQuantum-.Nautilus.Seer Pacific .10x Geno.Illumina  
1M Rtn109.9%143.6%14.4%80.7%25.7%28.8%54.8%
3M Rtn65.7%18.9%1.4%48.1%91.3%40.3%44.2%
6M Rtn113.5%-25.7%32.0%76.7%258.4%119.9%95.1%
12M Rtn-9.9%150.5%-0.9%57.9%583.0%178.1%104.2%
3Y Rtn11.5%-24.9%11.5%-72.4%110.9%103.1%11.5%
1M Excs Rtn110.5%99.7%13.2%83.1%20.7%30.9%57.0%
3M Excs Rtn77.4%16.5%0.2%50.3%90.3%40.4%45.3%
6M Excs Rtn95.5%-42.8%17.8%62.4%243.7%105.7%79.0%
12M Excs Rtn-30.3%141.5%-15.6%54.1%594.0%165.2%97.8%
3Y Excs Rtn-104.4%-128.7%-82.7%-156.3%18.1%23.0%-93.5%

Comparison Analyses

null

Financials

Segment Financials

Revenue by Segment
$ Mil20252024202320222021
Product23100
Service00000
Total23100


Assets by Segment
$ Mil202220212020
Single Segment39150341
Total39150341


Price Behavior

Price Behavior
Market Price$1.22 
Market Cap ($ Bil)0.3 
First Trading Date11/13/2020 
Distance from 52W High-53.6% 
   50 Days200 Days
DMA Price$0.85$0.95
DMA Trenddownup
Distance from DMA44.2%28.2%
 3M1YR
Volatility109.1%97.7%
Downside Capture132.36397.63
Upside Capture239.17291.10
Correlation (SPY)19.0%45.6%
QSI Betas & Captures as of 9/30/2026

 1M2M3M6M1Y3Y
Beta1.802.102.153.213.482.47
Up Beta-0.770.201.842.203.532.15
Down Beta14.715.774.464.353.621.88
Up Capture253%403%238%529%837%6506%
Bmk +ve Days6162766132424
Stock +ve Days11223059106310
Down Capture-320%5%122%254%184%113%
Bmk -ve Days16263760120328
Stock -ve Days10193366139416

[1] Upside and downside betas calculated using positive and negative benchmark daily returns respectively
Based On 1-Year Data
Annualized
Return
Annualized
Volatility
Sharpe
Ratio
Correlation
with QSI
QSI-31.2%97.5%0.04-
Sector ETF (XLV)18.2%15.7%0.868.8%
Equity (SPY)16.7%13.0%0.9145.7%
Gold (GLD)3.4%29.6%0.1127.8%
Commodities (DBC)45.0%20.9%1.67-1.3%
Real Estate (VNQ)2.8%13.7%-0.0513.1%
Bitcoin (BTCUSD)-31.7%44.2%-0.7333.6%

Smart multi-asset allocation framework can stack odds in your favor. Learn How
Based On 5-Year Data
Annualized
Return
Annualized
Volatility
Sharpe
Ratio
Correlation
with QSI
QSI-30.8%126.0%0.22-
Sector ETF (XLV)7.4%15.2%0.2919.3%
Equity (SPY)14.0%17.1%0.6330.7%
Gold (GLD)18.2%18.9%0.7812.9%
Commodities (DBC)10.3%19.6%0.406.2%
Real Estate (VNQ)1.3%18.8%-0.0424.7%
Bitcoin (BTCUSD)13.7%52.2%0.4320.6%

Smart multi-asset allocation framework can stack odds in your favor. Learn How
Based On 10-Year Data
Annualized
Return
Annualized
Volatility
Sharpe
Ratio
Correlation
with QSI
QSI-18.8%129.3%0.23-
Sector ETF (XLV)10.6%16.7%0.5117.1%
Equity (SPY)15.4%17.9%0.7328.0%
Gold (GLD)11.6%16.4%0.5811.9%
Commodities (DBC)8.3%18.1%0.375.7%
Real Estate (VNQ)4.2%20.7%0.1621.9%
Bitcoin (BTCUSD)63.6%66.2%1.0316.3%

Smart multi-asset allocation framework can stack odds in your favor. Learn How

Short Interest

Short Interest: As Of Date9152026
Short Interest: Shares Quantity13.0 Mil
Short Interest: % Change Since 8312026-9.7%
Average Daily Volume1.3 Mil
Days-to-Cover Short Interest10.3 days
Basic Shares Quantity217.8 Mil
Short % of Basic Shares6.0%

Earnings Returns History

Updated 10/8/2026
Expand for More
 Forward Returns
Earnings Date1D Returns5D Returns21D Returns
8/13/2026-6.4%-1.3%-8.2%
5/7/2026-7.5%-4.9%8.1%
3/3/2026-4.0%9.7%-21.1%
11/5/2025-8.3%-15.6%-19.4%
8/5/2025-4.9%-19.4%-25.7%
5/15/20250.0%17.6%19.6%
3/3/20256.2%-9.6%-7.7%
11/12/2024-22.4%-33.9%92.1%
...
SUMMARY STATS   
# Positive81010
# Negative131111
Median Positive4.8%9.8%12.7%
Median Negative-7.5%-9.6%-19.9%
Max Positive13.5%25.1%92.1%
Max Negative-32.2%-34.8%-31.9%
Collapse to Preview
 Forward Returns
Earnings Date1D Returns5D Returns21D Returns
8/13/2026-6.4%-1.3%-8.2%
5/7/2026-7.5%-4.9%8.1%
3/3/2026-4.0%9.7%-21.1%
11/5/2025-8.3%-15.6%-19.4%
8/5/2025-4.9%-19.4%-25.7%
5/15/20250.0%17.6%19.6%
3/3/20256.2%-9.6%-7.7%
11/12/2024-22.4%-33.9%92.1%
8/7/20243.4%7.4%11.1%
5/9/2024-7.1%1.6%-20.8%
2/29/202410.8%25.1%10.8%
11/9/20236.8%19.2%13.5%
8/7/2023-32.2%-34.8%-31.9%
5/11/2023-8.4%-5.8%4.5%
3/6/2023-13.0%-26.4%-19.9%
11/7/20222.0%22.1%-8.7%
8/8/2022-9.3%9.8%-17.4%
5/9/2022-3.4%-0.9%16.9%
2/28/202213.5%-3.1%26.0%
11/10/20212.5%3.4%-20.4%
8/16/2021-0.1%4.2%11.9%
SUMMARY STATS   
# Positive81010
# Negative131111
Median Positive4.8%9.8%12.7%
Median Negative-7.5%-9.6%-19.9%
Max Positive13.5%25.1%92.1%
Max Negative-32.2%-34.8%-31.9%

SEC Filings

Expand for More
Report DateFiling DateFiling
06/30/202608/13/202610-Q
03/31/202605/07/202610-Q
12/31/202503/03/202610-K
09/30/202511/05/202510-Q
06/30/202508/05/202510-Q
03/31/202505/15/202510-Q
12/31/202403/03/202510-K
09/30/202411/12/202410-Q
06/30/202408/07/202410-Q
03/31/202405/09/202410-Q
12/31/202302/29/202410-K
09/30/202311/09/202310-Q
06/30/202308/07/202310-Q
03/31/202305/11/202310-Q
12/31/202203/17/202310-K
09/30/202211/08/202210-Q
Collapse to Preview
Report DateFiling DateFiling
06/30/202608/13/202610-Q
03/31/202605/07/202610-Q
12/31/202503/03/202610-K
09/30/202511/05/202510-Q
06/30/202508/05/202510-Q
03/31/202505/15/202510-Q
12/31/202403/03/202510-K
09/30/202411/12/202410-Q
06/30/202408/07/202410-Q
03/31/202405/09/202410-Q
12/31/202302/29/202410-K
09/30/202311/09/202310-Q
06/30/202308/07/202310-Q
03/31/202305/11/202310-Q
12/31/202203/17/202310-K
09/30/202211/08/202210-Q
06/30/202208/08/202210-Q
03/31/202205/10/202210-Q
12/31/202103/01/202210-K
09/30/202111/15/202110-Q
06/30/202108/16/202110-Q

Recent Forward Guidance

Updated 10/4/2026

Latest: Q2 2026 Earnings Reported 8/13/2026

Forward GuidanceGuidance Change
MetricSourceLowMidHigh% Chg% DeltaChangePrior
2026 Total cash usageReported 93.00 Mil 0 AffirmedGuidance: 93.00 Mil for 2026
2026 RevenueReported 1.00 Mil 0 AffirmedGuidance: 1.00 Mil for 2026
2026 Adjusted total operating expensesReported 98.00 Mil 0 AffirmedGuidance: 98.00 Mil for 2026


Prior: Q1 2026 Earnings Reported 5/7/2026

Forward GuidanceGuidance Change
MetricSourceLowMidHigh% Chg% DeltaChangePrior
2026 Total cash usageReported 93.00 Mil 0 AffirmedGuidance: 93.00 Mil for 2026
2026 RevenueReported 1.00 Mil 0 AffirmedGuidance: 1.00 Mil for 2026
2026 Adjusted total operating expensesReported 98.00 Mil 0 AffirmedGuidance: 98.00 Mil for 2026

Insider Activity

Updated 9/23/2026
Expand for More
#OwnerTitleHoldingActionFiling DatePriceSharesTransacted
Value
Value of
Held Shares
Form
1Hawkins, Jeffrey AlanPresident & CEODirectSell92320260.769,7097,3872,769,274Form
2Keyes, Jeffry RChief Financial OfficerDirectSell92320260.762,4931,8971,306,053Form
3Lapointe, ChristianGC & Corp. SecretaryDirectSell92320260.764,7213,592888,548Form
4Hawkins, Jeffrey AlanPresident & CEODirectSell92320260.7620,14315,2242,758,412Form
5Keyes, Jeffry RChief Financial OfficerDirectSell92320260.765,1723,9091,299,354Form
Collapse to Preview
#OwnerTitleHoldingActionFiling DatePriceSharesTransacted
Value
Value of
Held Shares
Form
1Hawkins, Jeffrey AlanPresident & CEODirectSell92320260.769,7097,3872,769,274Form
2Keyes, Jeffry RChief Financial OfficerDirectSell92320260.762,4931,8971,306,053Form
3Lapointe, ChristianGC & Corp. SecretaryDirectSell92320260.764,7213,592888,548Form
4Hawkins, Jeffrey AlanPresident & CEODirectSell92320260.7620,14315,2242,758,412Form
5Keyes, Jeffry RChief Financial OfficerDirectSell92320260.765,1723,9091,299,354Form
6Lapointe, ChristianGC & Corp. SecretaryDirectSell92320260.769,7957,403886,277Form
7Lapointe, ChristianGC & Corp. SecretaryDirectSell62420260.907,7947,0071,063,004Form
8Keyes, Jeffry RChief Financial OfficerDirectSell62420260.904,1173,7011,550,190Form
9Vieceli, John SChief Product OfficerDirectSell62420260.9015,11213,5861,025,250Form
10Hawkins, Jeffrey AlanPresident & CEODirectSell62420260.9011,31110,1693,299,152Form
11Lapointe, ChristianGC & Corp. SecretaryDirectSell62420260.967,7947,4621,139,520Form
12Keyes, Jeffry RChief Financial OfficerDirectSell62420260.964,1163,9411,654,833Form
13Vieceli, John SChief Product OfficerDirectSell62420260.9615,11114,4671,106,320Form
14Hawkins, Jeffrey AlanPresident & CEODirectSell62420260.9611,31010,8283,524,298Form
15Keyes, Jeffry RChief Financial OfficerDirectSell42220260.9937,38137,1941,723,919Form
16Hawkins, Jeffrey AlanPresident & CEODirectSell42220260.9983,71283,2933,673,961Form
17Keyes, Jeffry RChief Financial OfficerDirectSell42220261.0137,38237,6211,781,291Form
18Hawkins, Jeffrey AlanPresident & CEODirectSell42220261.0183,71284,2483,800,302Form
19Keyes, Jeffry RChief Financial OfficerDirectSell32420260.834,4223,6551,493,951Form
20Lapointe, ChristianGC & Corp. SecretaryDirectSell32420260.836,1105,051990,281Form
21Vieceli, John SChief Product OfficerDirectSell32420260.8311,2399,290967,665Form
22Hawkins, Jeffrey AlanPresident & CEODirectSell32420260.8312,14910,0423,190,550Form
23Keyes, Jeffry RChief Financial OfficerDirectSell32420260.854,2333,5911,536,922Form
24Lapointe, ChristianGC & Corp. SecretaryDirectSell32420260.855,8494,9621,021,461Form
25Vieceli, John SChief Product OfficerDirectSell32420260.8510,7589,1261,002,602Form
26Hawkins, Jeffrey AlanPresident & CEODirectSell32420260.8511,6289,8643,284,614Form
27Kummeth, Charles R DirectBuy30920260.92500,000459,800786,258Form
28Dowdy, Paula DirectBuy30920260.95109,890104,450255,786Form
29Vieceli, John SChief Product OfficerDirectSell122220251.2821,92727,9791,022,042Form
30Lapointe, ChristianGC & Corp. SecretaryDirectSell122220251.2811,95115,2491,210,739Form
31Keyes, Jeffry RChief Financial OfficerDirectSell122220251.288,62711,0081,484,239Form
32Hawkins, Jeffrey AlanPresident & CEODirectSell122220251.2823,70730,2503,289,551Form
33Rothberg, Jonathan M NVR TR, LLCSell101720253.0726,09580,1125,847,939Form
34Lapointe, ChristianGC & Corp. SecretaryDirectSell92420251.645,3648,7701,570,918Form
35Hawkins, Jeffrey AlanPresident & CEODirectSell92420251.6410,64317,4014,253,820Form
36Vieceli, John SChief Product OfficerDirectSell92420251.649,84316,0931,345,442Form
37Keyes, Jeffry RChief Financial OfficerDirectSell92420251.643,8736,3321,915,932Form
38Bennett, Todd CChief Commercial OfficerDirectSell92420251.6418,48230,2181,114,287Form
39Lapointe, ChristianGC & Corp. SecretaryDirectSell92420251.685,3649,0251,625,678Form
40Hawkins, Jeffrey AlanPresident & CEODirectSell92420251.6810,64317,9084,395,570Form
41Vieceli, John SChief Product OfficerDirectSell92420251.689,84316,5621,401,173Form
42Keyes, Jeffry RChief Financial OfficerDirectSell92420251.683,8736,5171,978,228Form
43Bennett, Todd CChief Commercial OfficerDirectSell92420251.6818,48231,0981,177,825Form
Core Cache Last Updated: 10/8/2026