QSI logo

QUANTUM-SI INC

QSINASDAQ
🏆 #3859 by market capEarnings Nov 3US Equity
$1.07▲ $0.13 (+11.78%)
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24h▲ 11.8%
7d▲ 42.1%
14d▲ 43.9%
30d▲ 39.3%
ytd▼ 1.7%
1y▼ 24.3%
🏦Market Cap
$212M
Small Cap
📈Revenue Growth (YoY)
-20.3%
Declining
📊Gross Margin
35.0%
Healthy
💵FCF Margin
-5837.3%
Thin
⚖️P/S Ratio
98.0x
Expensive
Otter Score
40
Weak

Trading Snapshot

Day Range
$1.06 – $1.09
52-Week Range
$0.69 – $3.10
Volume
$3.77B
Avg Volume
$3.08B
Shares Outstanding
197.8M
Next Earnings
Oct 28, 2026

Fundamentals Snapshot

Annual Revenue
$2M
Last Q Revenue
$344,000
P/E Ratio
-1.7
P/S Ratio
98.0x
EPS (TTM)
$-0.45
Dividend Yield
0.00%
Dilution (1yr)
+35.2%

Why Investors Own QSI

  • ✓High-growth profile — revenue up +6.8% YoY with expanding US Equity exposure.
  • ✓Healthy economics — 38% gross margin and 29% free-cash-flow margin.
  • ✓New products and segments could unlock additional revenue streams.
⚠️ Key Risks

Execution delays, intensifying competition, and valuation compression if growth decelerates.

QSI logo

QUANTUM-SI INC

QSI
Financial Trends
RevenueThe total money the company brought in from sales, before subtracting any costs.
$2M▼ −20.3% YoY
Gross MarginOf every $1 of sales, how much is left after the direct cost of making the product/service. Higher = more efficient.
47.3%▼ −9.5% YoY
Operating IncomeProfit from the core business after operating costs, but before interest and taxes. Negative means the core business isn’t profitable yet.
−$97M▼ −10.3% YoY
Free Cash FlowCash left over after running the business and paying for equipment/capex. Negative means the company is burning cash.
−$97M▲ +5.3% YoY
Shares OutstandingHow many shares exist. Rising means the company is issuing more shares, which dilutes (shrinks) each existing owner’s slice.
197.8M▲ +35.2% YoY
Net CashCash minus total debt. Positive = more cash than debt (financially strong); negative = more debt than cash (net debt).
$17M▼ −$19M YoY
StockOtter · stockotter.space

About QUANTUM-SI INC

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. This system is specifically applied to the field of proteomics, paving the way for next-generation protein sequencing. Established in 2013, Quantum-Si's headquarters are located in Guilford, Connecticut.

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Otter Score Breakdown

How it's scoredFive components, each rated 1–5★ and equally weighted (20%), averaged to a 0–100 score:💎 Quality — gross margin🚀 Growth — revenue YoY⚖️ Valuation — P/S ratio⚡ Momentum — 30-day price change💧 Dilution — 1-yr share issuance (buybacks score higher)
💎Quality★★★★★
🚀Growth★★★★★
⚖️Valuation★★★★★
⚡Momentum★★★★★
💧Dilution★★★★★
Overall Score
Weak
40/100

Analyst Ratings

ⓘ
Consensus
Buy
7 analysts
Strong Buy1
Buy4
Hold2
Sell0
Strong Sell0
Ratings as of Sep 2026

Latest News & Updates

GlobeNewsWire·1d ago

Quantum-Si Presents Interim Proteus™ Data at World HUPO 2026 Demonstrating a Significant Step Change in Performance Compared to Platinum® Pro

BRANFORD, 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 sequencin

GlobeNewsWire·15d ago

Quantum-Si Announces Detection of 18 Amino Acids Using a Developmental Sequencing Kit on Proteus™

BRANFORD, 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 sequencin

GlobeNewsWire·21d ago

Quantum-Si Expands Proteus™ Roadshow with Additional U.S. and European Cities

BRANFORD, 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 protei

GlobeNewsWire·Aug 18

Quantum-Si to Participate in the H.C. Wainwright 28th Annual Global Investment Conference

BRANFORD, Conn., Aug. 18, 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

Seeking Alpha·Aug 14

Quantum-Si incorporated (QSI) Q2 2026 Earnings Call Transcript

Quantum-Si incorporated (QSI) Q2 2026 Earnings Call Transcript

MarketBeat·Aug 13

Quantum-Si Q2 Earnings Call Highlights

Quantum-Si NASDAQ: QSI said it has moved the planned launch of its Proteus protein sequencing platform to the second quarter of 2027 from the end of 2026, citing the need for an additional integrated instrument design cy