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QSI Quantum-Si Inc.

Industrials, filed as Quantum-Si Inc (COMMON STOCK), Equity As of 2026 Q2 among managers we track Quote on Google Finance, opens in a new tab

  • 1 Owner
  • Max 0.0%
  • $6.3M
  • 1 add

In 2026 Q2 Cathie Wood added to Quantum-Si.

Who owns this now

Largest portfolio weights among holders, up to 0.0% (Cathie Wood, Ark Investment Management). Not free-float ownership.

  1. Cathie Wood Add 0.04%

Who owns QSI

Sorted by value, long equity only, as of 2026 Q2.

History
Cathie Wood, Ark Investment Management 0.04% Add +4.2% 7,167,738 $6.3M History

1 current, options excluded

Weight bar: held both quarters added sold at this quarter’s reported price

Insider trades

Open-market buys and sales by QSI's executives, directors and 10% owners in the last 12 months, from their Form 4s

All QSI insider trades
  • $564K bought by 2 insiders
  • None no sales outside a trading plan
  • None no planned (10b5-1) sales
  1. Charles R. Kummeth Director
    Buy
    $460K 500,000 shares at $0.9200 +141% to stake
    Traded Mar 5 Filed Mar 9
    ↗
  2. Paula Dowdy Director
    Buy
    $104K 109,890 shares at $0.9500 +69% to stake
    Traded Mar 5 Filed Mar 9
    ↗
  3. Jonathan M Rothberg Director
    Planned sale
    $80K 26,095 shares at $3.07 1.4% of stake
    Traded Oct 16, 2025 Filed Oct 17, 2025
    ↗

Also filed in the last 12 months, not counted as buying or selling: 30 sales to cover taxes and 4 stock grants.

SEC filings

Recent issuer filings from EDGAR, 14 shown.

Filed Form Detail Links
8-K 8.01,9.01 Filing Doc
8-K 7.01,9.01 Filing Doc
8-K 7.01,9.01 Filing Doc
SCHEDULE 13D/A — Filing Doc
8-K 2.02,9.01 Filing Doc
10-Q Filing Doc
SCHEDULE 13G/A — Filing Doc
8-K 3.01 Filing Doc
8-K 1.01,2.03,9.01 Filing Doc
8-K 5.07 Filing Doc
8-K 2.02,9.01 Filing Doc
10-Q Filing Doc
DEF 14A Filing Doc
DEFA14A Filing Doc

Source: SEC EDGAR submissions, updated 5 days ago. All on EDGAR

Financials

US-GAAP annual figures by fiscal year, as tagged in Form 10-K. Each value links to its SEC filing.

Income statement

Metric FY2023 FY2024 FY2025
Revenue $1.08M $3.06M $2.44M
Gross profit $0.488M $1.6M $1.15M
Gross margin * 45.1% 52.3% 47.3%
Net income -$95.96M -$101.01M -$101.34M
Net margin * -8868.8% -3303.0% -4160.1%

Balance sheet

Metric FY2023 FY2024 FY2025
Total current assets $266.31M $218.01M $175.86M
Total non-current assets * $31.94M $29.86M $69.75M
Total assets $298.25M $247.87M $245.61M
Total current liabilities $11.61M $18.19M $23.02M
Total non-current liabilities * $15.02M $14.26M $2.36M
Total equity $271.62M $215.42M $220.23M

Cash flow

Metric FY2023 FY2024 FY2025
Cash from operations -$94.04M -$87.8M -$94.72M
Cash from investing $143.43M -$32.68M -$28.32M
Cash from financing $0.149M $35.88M $95.42M
Net change in cash * $49.54M -$84.62M -$27.6M

Source: SEC companyfacts (US-GAAP 10-K). A * marks a computed figure, not a single XBRL tag. Fiscal years are as the issuer labels them. Follow The Filings does not adjust or audit these figures.

Ownership over time

13Fs that reported it each quarter. Click a bar for that quarter’s holders.