Quantum-Si Incorporated (QSI) Stock Fundamentals, Analysis & Risk Signals

Health score, price, valuation, risk signals, and key metrics at a glance.

Quantum-Si Incorporated

NasdaqGM•Healthcare•Medical Devices

$0.77+0.01(0.01%)Market closed

Market Cap

$162.28M

P/S

101.1x

P/B

0.9x

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-based solution that automates data analysis workflows and visualizes the sequencing results. The company was founded in 2013 and is headquartered in Branford, Connecticut.

How this company scores

AverageMetricSide Score: 41/100

Strongest: Balance Sheet & Red Flags (15/25); weakest: Growth (7/25).

Profitability11/25

Growth7/25

Balance Sheet & Red Flags15/25

Cash & Earnings Quality8/25

Strengths

Interest easily coveredProfit converts from growthNet cash positionImproving margins

Valuation vs. 5-year range

Today's multiple positioned against its own trailing range — a visual premium/discount check.

P/S · 101.1x5y range 55.4x – 911.3x

Currently near its 14-quarter median.

P/B · 0.9x5y range 0.6x – 2.3x

Currently near its 20-quarter median.

Watch items

Data-driven signals worth keeping an eye on across the last 8 quarters

High Risk

Margin Pressure

Red Flag

The company posted negative operating margins in recent quarters — core operations are unprofitable.

Earnings Quality

Red Flag

Free cash flow has been negative in 8 of the last 8 quarters — earnings are not translating to cash.

Price & Volume

Market Cap $162.28M

Metrics at a Glance

as of June 2026

Revenue & Profit

Revenue, EBITDA, operating income, net income, EPS, and shares

TTM Revenue: $1.60M
Q. Revenue: $344,000
TTM EBITDA: $-103.96M
TTM Op. Income: $-110.55M
Q. Op. Income: $-25.63M
TTM Net Income: $-98.52M
Q. Net Income: $-23.53M
EPS: $-0.11
Shares Out.: $217.80M

$1.60M in TTM revenue declined 53.0% YoY, reaching $344,000 last quarter. TTM EBITDA of $-103.96M and TTM operating income of $-110.55M show growth is flowing through to the bottom line. However, net income is negative at $98.52M — growth is not yet reaching the bottom line. Across the last 8 quarters, TTM revenue has fallen for 5 consecutive quarters — a weakening trend.

Margins

Gross, EBITDA, operating, and net margin trends

Gross Margin: 50.0%
EBITDA Margin: -6979.4%
Op. Margin: -7450.3%
Net Margin: -6841.3%

Op. margin of -7450.3% is down 2353.8% YoY — costs are rising relative to revenue. Net margin at -6841.3% and gross margin of 50.0% show how much of each revenue dollar survives to profit. Over the past year, operating margin is down 46% — an improving trend.

Price Ratios

P/E, P/S, P/B, EV/EBITDA, FCF yield, and earnings yield

P/E Ratio: N/A
P/S Ratio: 101.1x
P/B Ratio: 0.9x

P/S of 101.1x and P/B of 0.9x. P/S is high, meaning growth expectations are priced in.

Assets & Liabilities

Total assets, cash, debt, book value, and leverage

Total Assets: $193.57M
Cash: $23.65M
Long-Term Debt: N/A
Book Value: $180.20M
D/E Ratio: N/A
Debt/EBITDA: N/A

Cash Flow

Operating cash flow, free cash flow, FCF margin, and earnings quality

Op. Cash Flow: $-18.44M
TTM Free Cash Flow: $-93.69M
FCF Margin: -5837.3%
FCF / Net Income: 1.0

TTM FCF of $-93.69M on $-18.44M in operating cash flow. The FCF / Net Income ratio of 1.0x means free cash flow covers net income — earnings are backed by cash. Across the last 8 quarters, free cash flow has risen for 3 consecutive quarters — an improving trend.