Quantum-Si incorporated
QSI · Price history
Price at last available close
$1.65
+$0.85 (+107.55%) 1M
2026-10-27
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Company & revenue
About Quantum-Si incorporated
Primary reporting period: 2025-12-31 · Research updated Oct 12, 2026. A research update is not a new financial filing.
Who they are
Quantum-Si incorporated operates within the life sciences sector, focusing on the creation of an advanced platform for individual molecule detection. This innovative technology is designed to streamline sample preparation and subsequent sequencing processes. The company offers a unique, proprietary single molecule detection system that draws on advancements from the semiconductor industry.
How they make money
Quantum-Si generates revenue primarily through the sale of its proprietary protein sequencing instruments, associated consumable kits, and related service contracts. The company operates a razor-and-blade business model where the initial sale of the sequencing platform is complemented by recurring revenue streams from the ongoing purchase of specialized reagents and sequencing chips required for each experiment.
Products & services
The company offers the Platinum protein sequencing platform, which utilizes semiconductor-based technology to perform single-molecule protein sequencing. Supporting products include consumable kits, such as sequencing chips and reagent sets, and maintenance or support services for the installed instrument base.
Brands & revenue mix
The company's primary commercial protein sequencing instrument platform.
Separate brand revenue is not available in this research.Source
Revenue share is not unit sales or a best-seller ranking. Parent brands and included sub-brands can overlap; do not add overlapping rows.
Product / operating segments
Geographic revenue
Customer types
Customer concentration
The company does not report significant customer concentration for the fiscal year ended December 31, 2025.
Suppliers, materials & equipment
- Contract Manufacturers — The company relies on third-party contract manufacturers for the production of its instruments and certain consumable components; specific supplier names are not disclosed.Source
Competitors
- Next-generation sequencing companies — Entities developing alternative methods for proteomic analysis and protein identification.Source
Strengths
Financial risk observations and what to check
These are saved observations about business performance, not predictions. Review the company filings alongside the interpretation below. Latest stored financial period end: 2026-06-30.
Quarterly revenue fell 41.8% versus the same quarter last year.
Check comparable business scope and currency, then separate volume, pricing and divestitures. One weaker quarter does not establish that the same decline will continue.
Diluted weighted-average shares increased 18.6% year over year.
Compare per-share results with total earnings and inspect the equity footnote. A change in weighted-average shares does not by itself establish the cause, the number of shares issued today, or the economic effect of a split.
Wall Street Score
Overall investment score · Quality, value, risk and opportunity
22
Poor
View category scores →
Company Quality
How good is the actual business—regardless of today’s stock price?
25
Poor
Financial Strength
43
Business Quality / Moat
0
Management
40
Growth Quality
7
Risk / Durability
31
Uses financial strength, moat, management, growth quality and durability. It excludes share price, P/E, market cap, intrinsic value and margin of safety.
Opportunity
Opportunity Score · How does the current price compare with estimated value?
25
Avoid
Based on current valuation, company quality, recent trends, and available market signals.
View score details →
Model Outlook
12-month model · What does the model think happens next?
37/100
Building Historical Record
Model Score 37/100 — estimates relative performance potential, distinct from the overall Wall Street Score and the separate Company Quality score.
Probability unavailable — the model has not produced a calibrated probability yet.
Click for full breakdown →
WSS View
The quick read
The overall Wall Street Score is low across its combined quality, valuation and risk inputs. This can reflect an expensive share price, business weaknesses, or both; check Company Quality and the category breakdown before drawing a conclusion.
At today’s price, the WSS valuation framework currently reads as less attractive based on the available valuation and market data.
The model outlook is currently cautious.
No strong positive signal is being highlighted from the currently available summary data.
- •Valuation is a weaker part of the current profile
- •Revenue fundamentals are weak
- •Asset quality is a weaker factor
Company-specific research
Questions worth answering for QSI
These questions are generated from this company's current financial and score data so the page adds context instead of treating the headline score as a stand-alone conclusion.
- •What is driving QSI's revenue decline, and does the latest company filing suggest the weakness is temporary or structural?
- •How long can QSI fund negative free cash flow using its current cash position before it may need more debt or new shares?
- •How is QSI likely to use its cash advantage: reinvestment, acquisitions, debt reduction, dividends or buybacks?
- •What specifically needs to improve for QSI to reach sustainable profitability?
- •What future growth or profitability would be needed to justify QSI's current valuation?
Essential Investment Snapshot
Wall Street Score
22
Opportunity Score
25
Market Cap
$328.3M
P/E Ratio
-3.0
EPS
$-0.46
52-Week High
$3.10
52-Week Low
$0.69
Beta
3.22
Analyst Target
$2.95
Shares Outstanding
197.8M
Total Revenue
$1.6M
Total Debt
$3.3M
Dividend
No current dividend
Liquidation Value / Share
$0.91
Momentum & Volatility Signals
Two different market-behavior signals. Momentum measures direction and trend strength. Volatility measures how large and unstable the price moves are, regardless of direction.
Strong upward momentum
Extreme movement
A high momentum score means price has been trending upward with confirming short- and medium-term strength. A low score means downward or weakening momentum.
A high volatility score means larger, less stable price swings. It can happen while a stock is rising or falling, so high volatility is not automatically bullish or bearish.
Important: the volatility score above is based on realized price volatility. Implied volatility (IV) comes from options prices and represents the market's expected future movement. Wall Street Score will keep IV separate and will only display it when a verified options-chain feed is available.
Community Sentiment
0 active · 0 total callsNo personal call yet on QSI.
Potential upside factors
- +Growth opportunities may come from revenue expansion, margin improvement, new products, market-share gains, and stronger cash flow.
- +Proprietary semiconductor-based sequencing technology.
- +Scalable manufacturing and supply chain model.
Potential downside factors
- −Key risks may include competition, margin pressure, debt levels, valuation risk, and changes in demand within the Medical - Devices industry.
- −History of operating losses and potential need for additional capital.
- −Dependence on third-party manufacturers for key components.
- −Market adoption risks for new proteomic sequencing technology.
These research factors come from saved company research and financial data, not community votes. They are starting points to verify against filings, not buy or sell recommendations.
Create a free account to make a call.
Scores
Click any score for full breakdownWas this stock page easy to understand?
One click helps us improve the research experience. This is not tied to an investment decision.
Score Changes
3 historical score records availablePrevious Score
22
Oct 1, 2026
Change
Unchanged
Current Score
22
Oct 15, 2026
Category Changes
QSI score was unchanged.
Projected Score
Projected Score
18
Projected Change
-4.8 points
Preliminary comparable-period financial changes suggest decline of approximately 4.8 points. This is a projected estimate, not the official WallStreetScore.
Price vs. Value
Valuation unavailableCurrent Price
$1.65
Model Intrinsic Value
—
Difference
—
Margin of Safety
—
Intrinsic value is not currently available for this stock, so valuation can't be calculated.
Financial Charts
Revenue
Additional Metrics
Operating Cash Flow
Total Debt
Total Assets
Net Margin %
Free includes 3 annual periods plus available TTM; Premium includes up to 10 annual periods. History depends on available company filings. Swipe the table horizontally to see older periods. A dash means unavailable, not zero.
| Line Item | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 |
|---|---|---|---|---|---|---|---|---|
| Revenue | $1.6M | $2.4M | $3.1M | $1.1M | ···· | ···· | ···· | ···· |
| Cost of Revenue | $1.0M | $1.3M | $1.5M | $594K | ···· | ···· | ···· | ···· |
| Gross Profit | $562K | $1.2M | $1.6M | $488K | ···· | ···· | ···· | ···· |
| Research & Development | $55.1M | $53.8M | $59.6M | $67.0M | ···· | ···· | ···· | ···· |
| SG&A Expenses | $40.6M | $44.8M | $50.5M | $44.6M | ···· | ···· | ···· | ···· |
| Operating Expenses | $95.7M | $98.5M | $110.2M | $111.7M | ···· | ···· | ···· | ···· |
| EBITDA | -$90.8M | -$92.9M | -$96.4M | -$91.8M | ···· | ···· | ···· | ···· |
| Operating Income | -$95.2M | -$97.4M | -$108.6M | -$111.2M | ···· | ···· | ···· | ···· |
| Interest Expense | $0.00 | $0.00 | $0.00 | $0.00 | ···· | ···· | ···· | ···· |
| Income Before Tax | -$98.6M | -$101.3M | -$101.0M | -$96.0M | ···· | ···· | ···· | ···· |
| Income Tax Expense | -$95K | $58K | $56K | $0.00 | ···· | ···· | ···· | ···· |
| Net Income | -$98.5M | -$101.3M | -$101.0M | -$96.0M | ···· | ···· | ···· | ···· |
| Basic EPS | $-0.46 | $-0.51 | $-0.71 | $-0.68 | ···· | ···· | ···· | ···· |
| Basic Shares | 218M | 198M | 143M | 141M | ···· | ···· | ···· | ···· |
| Diluted Shares | 218M | 198M | 143M | 141M | ···· | ···· | ···· | ···· |
Earnings Summary
Revenue
$344000
Estimate unavailable.
Revenue Beat/Miss
Not available (no estimate stored)
EPS
-$0.11
Estimate unavailable.
EPS Beat/Miss
Not available (no estimate stored)
Debt Change
-70.8%
Cash Change
+6.6%
Margin Change
-1962.1 pp
Debt and cash show percentage changes versus the comparison period; margin shows the change in percentage points (pp). These are company-wide changes, not per-share amounts.
Financial Changes Since Prior Period
What Improved
- Cash position grew
- Debt reduced
What Weakened
- Margins contracted
Potential Score Impact
Positive indicators included cash levels, debt levels. Pressure indicators included revenue growth, EPS growth, net income margin. These factors may support or pressure the Revenue, Management, Financial, and Debt categories; this summary does not claim that the stored scores changed.
Stored Earnings Analysis
Revenue declined 41.8%. EPS declined 31.2%. Cash increased 6.6%. Total debt declined 70.8%. Net income margin declined by 1962.1 percentage points.
Earnings-Call Transcript
Earnings-call transcript analysis is not currently available.
These results may influence future scores when the next evaluation is completed.
Insider Activity
Guru / Smart Money
Guru Score
Smart Money
Number of Gurus
Total Guru Value
Avg Portfolio Weight
Largest Holder
Largest Holder %
New Positions
Increased Positions
Reduced Positions
Exited Positions
Net Guru Sentiment
Short Interest
Dividend History
Dividend data is not available yet. Missing data does not mean this company pays no dividend.
Conservative Projected Values
3 Years
$———.——
5 Years
$———.——
10 Years
$———.——
Conservative Projection Rate
——%
Conservative Projected Values — price projections derived from actual 10-year adjusted historical returns, conservatively adjusted and capped at 8% annually. These are distinct from the Outperformance Model Score and WallStreetScore.
Conservative Projected Values
Premium unlocks the 3-year, 5-year, and 10-year conservative projected values with full calculation breakdowns based on actual historical returns.
Start 7-Day Free TrialHistorical Outperformance Record
Premium includes stored forecasts and any available evaluated results. Completed results, win rates and calibrated probabilities are shown only when supported records exist; access does not create historical outcomes.
Start 7-Day Free TrialHistorical Trends
3 historical recordsHistorical Score Chart
3 of 3 records shownWall Street Score
Debt Score
Revenue Score
Asset Score
Capital Score
Management Score
Moat Score
Valuation Score
Buffett Score
Intrinsic Value
Value Reference
Margin of Safety %
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Rumor Mill · QSI
Corporate developments & opportunities
No reviewed developments match this filter.
Evidence credibility is not a forecast of stock performance. Rumor Mill is separate from the WSS score.
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