NASDAQ · QSI

Quantum-Si Inc

Closing price · Nov 13, 2026 $1.15

Last insider buy price $0.92 Paid by Director Charles Kummeth on Mar 5, 2026 (Form 4). Not today's price.

Latest quarter · ended Sep 30, 2026

Sales slipped and cash got weaker

descriptionFiled Nov 5, 2026

Revenue growthShrinking

−61.6%

Dec '24Sep '26

$212K vs. $552K a year ago

Gross marginSteady

34.9%

Dec '24Sep '26

vs. 35.1% a year ago

Cash from operationsBetter

−$20.5M

Dec '24Sep '26

vs. −$32M a year ago

Numbers come from the company's own 10-Q and 10-K reports filed with the SEC. Each bar is one quarter, oldest on the left. The colored bar is the latest. Hover over or tap a bar to see its number.

Smart money pulse

What insiders and funds are doing

Selling Insiders: as of Nov 13 Funds: as of Jun 30, 2026

account_balance
1 fund bought, 1 sold in the quarter ended Jun 30, 2026, counting funds that hold 500 stocks or fewer and $1M+ of this one. Index funds and banks are left out.
info
30 real insider sales in 12 months. $495K in total, not counting planned sales.

−100 means everyone selling, +100 everyone buying. This is data, not advice.

How the Pulse works

Pulse runs from −100 (everyone selling) to +100 (everyone buying). Half comes from insiders: real buyers vs. real sellers in the last 90 days (Form 4). Half comes from funds: funds that bought vs. funds that sold last quarter (13F). 13F is a snapshot of long positions on the last day of the quarter, filed up to 45 days later. It does not show short positions or trades since then.

Who owns it

142 funds report owning QSI, down from 156

Holdings as of Jun 30, 2026

New29

Added33

Held29

Trimmed51

Sold out43

Last quarter

Who bought and who sold

Apr–Jun 2026

ARK Investment Management LLC

+4%

Amova Asset Management Americas, Inc.

−12%

Change in shares held from Mar 31 to Jun 30, 2026, biggest holdings first. Only funds that hold 500 stocks or fewer and $1M+ of this one: index funds and banks own almost everything, so their changes say little. Bars stop at ±100%.

Insider trades · last 12 months

Real buys and sales

● Open-market buy● Open-market sale

Last 6 months. A wider screen shows 12.

Showing 32 real trades. Hidden: 4 stock grants. Those happen on a schedule and say little about what an insider thinks. Bigger dot means a bigger trade.

Real trades, newest first

Sep 22 Jeffrey Hawkins President & CEO, Director Open-market sale $7.38K 9,709 sh at $0.76 Sold 1% of stake

Sep 22 Christian LaPointe GC & Corp. Secretary Open-market sale $3.59K 4,721 sh at $0.76 Sold 1% of stake

Sep 22 Jeffry Keyes CFO Open-market sale $1.89K 2,493 sh at $0.76 Sold 1% of stake

Sep 21 Jeffrey Hawkins President & CEO, Director Open-market sale $15.3K 20,143 sh at $0.76 Sold 1% of stake

Sep 21 Christian LaPointe GC & Corp. Secretary Open-market sale $7.44K 9,795 sh at $0.76 Sold 1% of stake

Sep 21 Jeffry Keyes CFO Open-market sale $3.93K 5,172 sh at $0.76 Sold 1% of stake

Jun 23 John Vieceli Chief Product Officer Open-market sale $13.6K 15,112 sh at $0.90 Sold 1% of stake

Jun 23 Jeffrey Hawkins President & CEO, Director Open-market sale $10.2K 11,311 sh at $0.90 Sold 1% of stake

Jun 23 Christian LaPointe GC & Corp. Secretary Open-market sale $7.01K 7,794 sh at $0.90 Sold 1% of stake

Jun 23 Jeffry Keyes CFO Open-market sale $3.71K 4,117 sh at $0.90 Sold 1% of stake

Show 22 older real trades

Jun 22 John Vieceli Chief Product Officer Open-market sale $14.5K 15,111 sh at $0.96 Sold 1% of stake

Jun 22 Jeffrey Hawkins President & CEO, Director Open-market sale $10.9K 11,310 sh at $0.96 Sold 1% of stake

Jun 22 Christian LaPointe GC & Corp. Secretary Open-market sale $7.48K 7,794 sh at $0.96 Sold 1% of stake

Jun 22 Jeffry Keyes CFO Open-market sale $3.95K 4,116 sh at $0.96 Sold 1% of stake

Apr 21 Jeffrey Hawkins President & CEO, Director Open-market sale $83.7K 83,712 sh at $1.00 Sold 2% of stake

Apr 21 Jeffry Keyes CFO Open-market sale $37.4K 37,381 sh at $1.00 Sold 2% of stake

Apr 20 Jeffrey Hawkins President & CEO, Director Open-market sale $84.5K 83,712 sh at $1.01 Sold 2% of stake

Apr 20 Jeffry Keyes CFO Open-market sale $37.8K 37,382 sh at $1.01 Sold 2% of stake

Mar 23 Jeffrey Hawkins President & CEO, Director Open-market sale $10.1K 12,149 sh at $0.83 Sold 1% of stake

Mar 23 John Vieceli Chief Product Officer Open-market sale $9.33K 11,239 sh at $0.83 Sold 1% of stake

Mar 23 Christian LaPointe GC & Corp. Secretary Open-market sale $5.07K 6,110 sh at $0.83 Sold 1% of stake

Mar 23 Jeffry Keyes CFO Open-market sale $3.67K 4,422 sh at $0.83 Sold 1% of stake

Mar 20 Jeffrey Hawkins President & CEO, Director Open-market sale $9.88K 11,628 sh at $0.85 Sold 1% of stake

Mar 20 John Vieceli Chief Product Officer Open-market sale $9.14K 10,758 sh at $0.85 Sold 1% of stake

Mar 20 Christian LaPointe GC & Corp. Secretary Open-market sale $4.97K 5,849 sh at $0.85 Sold 1% of stake

Mar 20 Jeffry Keyes CFO Open-market sale $3.6K 4,233 sh at $0.85 Sold 1% of stake

Mar 5 Charles Kummeth Director Open-market buy $460K 500,000 sh at $0.92

Mar 5 Paula Dowdy Director Open-market buy $104K 109,890 sh at $0.95

Dec 22 Jeffrey Hawkins President & CEO, Director Open-market sale $30.3K 23,707 sh at $1.28 Sold 1% of stake

Dec 22 John Vieceli Chief Product Officer Open-market sale $28.1K 21,927 sh at $1.28 Sold 3% of stake

Dec 22 Christian LaPointe GC & Corp. Secretary Open-market sale $15.3K 11,951 sh at $1.28 Sold 1% of stake

Dec 22 Jeffry Keyes CFO Open-market sale $11K 8,627 sh at $1.28 Sold 1% of stake

Showing every filing. Dashed circles are routine: grants, tax withholding, option exercises and planned sales.

Top holders

Biggest funds in QSI

As of Jun 30, 2026

Fund	Value	Change
Vanguard Capital Management LLC	$6.71M	+8%
ARK Investment Management LLC	$6.34M	+4%
BlackRock, Inc.	$4.62M	−61%
Amova Asset Management Americas, Inc.	$3.46M	−12%
Sumitomo Mitsui Trust Group, Inc.	$3.44M	−12%

Quantum-Si Inc

Follow QSI

Sales slipped and cash got weaker

What insiders and funds are doing

142 funds report owning QSI, down from 156

Who bought and who sold

Real buys and sales

Real trades, newest first

Biggest funds in QSI

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