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Quantum-Si incorporated (QSI)

Quantum-Si incorporated at a glance — key fundamentals, SEC filings, insider buying and selling, and earnings dates.

Quantum-Si incorporated (QSI) is a Biotechnology company based in US with a market capitalization of $235.4M. Revenue declined 20.3% year-over-year and free cash flow was negative at -$97.2M. This page tracks QSI's SEC filings, insider buying and selling, earnings dates, and key fundamentals in one place.

US · 149 employees · IPO Nov 13, 2020

Valuation

Valuation & price

$0.89 · as of May 17, 2026 · -66.2% vs 52w high

—

P/E ratio

Latest-FY diluted EPS

1.07

P/B ratio

Market cap ÷ book equity

—

Dividend yield

Price — last 12 months

$2.54$1.63$0.71Jul 25Dec 25Jul 26Jul 7, 25$1.83Jul 9, 25$1.87Jul 11, 25$1.73Jul 15, 25$1.72Jul 17, 25$1.82Jul 21, 25$1.72Jul 23, 25$1.88Jul 25, 25$1.93Jul 29, 25$1.64Jul 31, 25$1.48Aug 4, 25$1.44Aug 6, 25$1.37Aug 11, 25$1.20Aug 13, 25$1.17Aug 15, 25$1.10Aug 19, 25$1.03Aug 21, 25$1.11Aug 25, 25$1.14Aug 27, 25$1.16Aug 29, 25$1.12Sep 3, 25$1.07Sep 5, 25$1.08Sep 9, 25$1.15Sep 11, 25$1.20Sep 16, 25$1.33Sep 18, 25$1.53Sep 22, 25$1.70Sep 24, 25$1.61Sep 26, 25$1.49Sep 30, 25$1.41Oct 2, 25$1.54Oct 6, 25$1.81Oct 8, 25$1.77Oct 10, 25$1.67Oct 14, 25$2.15Oct 16, 25$2.54Oct 21, 25$2.34Oct 23, 25$2.20Oct 27, 25$2.34Oct 29, 25$2.14Oct 31, 25$2.15Nov 4, 25$1.84Nov 6, 25$1.65Nov 10, 25$1.60Nov 12, 25$1.52Nov 14, 25$1.37Nov 18, 25$1.27Nov 20, 25$1.24Nov 25, 25$1.35Nov 28, 25$1.41Dec 2, 25$1.27Dec 4, 25$1.47Dec 8, 25$1.45Dec 10, 25$1.44Dec 12, 25$1.29Dec 16, 25$1.22Dec 18, 25$1.22Dec 22, 25$1.27Dec 24, 25$1.31Dec 29, 25$1.18Jan 2, 26$1.16Jan 6, 26$1.28Jan 8, 26$1.25Jan 12, 26$1.21Jan 14, 26$1.27Jan 16, 26$1.27Jan 21, 26$1.23Jan 23, 26$1.25Jan 27, 26$1.23Jan 29, 26$1.17Feb 2, 26$1.10Feb 4, 26$1.03Feb 9, 26$1.07Feb 11, 26$1.04Feb 13, 26$0.99Feb 18, 26$0.91Feb 20, 26$0.94Feb 24, 26$0.93Feb 26, 26$1.01Mar 2, 26$0.93Mar 4, 26$0.91Mar 6, 26$0.86Mar 10, 26$1.04Mar 12, 26$0.98Mar 17, 26$0.93Mar 19, 26$0.86Mar 23, 26$0.90Mar 25, 26$0.86Mar 27, 26$0.76Mar 31, 26$0.77Apr 2, 26$0.75Apr 7, 26$0.71Apr 9, 26$0.75Apr 13, 26$0.79Apr 15, 26$1.05Apr 17, 26$1.07Apr 22, 26$1.06Apr 24, 26$0.91Apr 28, 26$0.91Apr 30, 26$0.98May 4, 26$0.97May 6, 26$1.03May 8, 26$0.91May 12, 26$0.94May 14, 26$0.93May 18, 26$0.85May 20, 26$0.88May 22, 26$1.06May 28, 26$1.20Jun 1, 26$1.18Jun 3, 26$1.19Jun 5, 26$1.05Jun 9, 26$0.99Jun 11, 26$0.97Jun 15, 26$0.99Jun 17, 26$0.94Jun 22, 26$0.92Jun 24, 26$0.83Jun 26, 26$0.85Jul 2, 26$0.93
$0.7152-week range$2.63
Loading valuation history…

Fundamentals

Key fundamentals

$235.4M

Market cap

-20.3%

Revenue growth (YoY)

47.3%

Gross margin

-$97.2M

Free cash flow (USD)

-$158.7M

Net debt

Net cash position

38.1%

Share dilution

2/5

Graham criteria passed

Defensive-investor screen

Healthcare

Sector

Trajectory

Long-term trends

Revenue by year

2019 → 2025

FY 2019$0.00FY 2020$0.00FY 2021$0.00FY 2022$0.00FY 2023$1.1MFY 2024$3.1MFY 2025$2.4M
$0$2.4M

Free cash flow by year

2019 → 2025

FY 2019$-31.9MFY 2020$-33.0MFY 2021$-72.6MFY 2022$-101.3MFY 2023$-99.3MFY 2024$-92.4MFY 2025$-97.2M
-$31.9M-$97.2M

Gross margin by year

2023 → 2025

FY 202345.1%FY 202452.3%FY 202547.3%
45.1%47.3%

Value screen

Graham defensive-investor tests

Computing the scorecard — refreshing any stale inputs…

0

Insider buys · 90 days

6

Insider sells · 90 days

Earnings

Last report: 10-Q filed May 7, 2026

Next expected: not yet scheduled

On the tape

Recent SEC & insider activity

  • Insider sellInsider Sell $14KLaPointe Christian · GC & Corp. Secretary · $14.5KJun 24, 2026Filing
  • Insider sellInsider Sell $8KKeyes Jeffry R. · Chief Financial Officer · $7.6KJun 24, 2026Filing
  • Insider sellInsider Sell $21KHawkins Jeffrey Alan · Director, President & CEO · $21KJun 24, 2026Filing
  • Insider sellInsider Sell $28KVieceli John S. · Chief Product Officer · $28.1KJun 24, 2026Filing
  • 8-K eventLease AgreementJun 24, 2026Filing
  • 8-K eventAnnual Meeting ResultsMay 15, 2026Filing
  • 8-K eventEarnings ReleaseMay 7, 2026Filing
  • Quarterly report10-Q FiledMay 7, 2026Filing
  • Insider sellInsider Sell $168KHawkins Jeffrey Alan · Director, President & CEO · $167.5KApr 22, 2026Filing
  • Insider sellInsider Sell $75KKeyes Jeffry R. · Chief Financial Officer · $74.8KApr 22, 2026Filing

Questions

Frequently asked questions

What is Quantum-Si incorporated's market cap?

Quantum-Si incorporated (QSI) has a market capitalization of $235.4M.

What is QSI's P/E ratio?

A meaningful P/E ratio is not available for QSI — the company's latest fiscal-year earnings per share is zero, negative, or not yet cached.

What is QSI's price-to-book (P/B) ratio?

QSI trades at 1.07 times book value per share.

Are insiders buying QSI stock?

SEC Form 4 filings show no open-market insider buys at Quantum-Si incorporated in the last 90 days (6 sells).

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Timeline

Every filing, insider trade & earnings on a price-anchored timeline

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News

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Data: SEC EDGAR filings and cached fundamental data; prices and ratios use the most recent cached quote and statements (may lag by up to a day). Educational and research purposes only. Not investment advice.