Quantum-Si (QSI) Stock: Insider Trades, Congress & Funds

Smart money at a glance

Filings to Oct 31, 2026

Net selling: insiders sold $39K and bought $0 on the open market in 90 days (SEC Form 4). Congress: no trades disclosed in 180 days.

Company insidersSEC Form 4, last 90 days: -$39K netNet selling
CongressSTOCK Act, last 180 days: NoneNo trades disclosed
Big fundsSEC 13F, quarter ended Jun 30, 2026: 0 added, 1 cutMore cutting

Analysts

What do analysts expect?

Analyst target and ratings are on paid plans

See the 12-month consensus target and the buy/hold/sell rating split.

Unlock the full results

Questions about QSI filings

Are insiders buying or selling QuantumSi Inc (QSI) stock?

Net selling: insiders sold $39K and bought $0 of QSI stock on the open market in the 90 days to Oct 31, 2026, according to SEC Form 4 filings. The largest was Hawkins, Jeffrey Alan (President & CEO), who sold $23K. The latest filing was on Sep 23, 2026.

Which members of Congress have traded QSI recently?

None. No member of Congress disclosed a QSI trade with a trade date in the last 180 days, according to House and Senate STOCK Act filings.

How current is this QSI smart-money data?

This summary uses filings available on Oct 31, 2026. Insiders must report trades to the SEC within 2 business days, members of Congress have up to 45 days to disclose a trade, and funds file 13F holdings up to 45 days after each quarter ends, so the latest moves may not be public yet.

13F: filed up to 45 days late.

Smart money on QSI

Lean short2 sources:
- Insiders
- Funds

Top traders
No tracked positions at the last update
Insiders
Lean short3 sales · $39.4K
Form 4 filings, open market.
Politicians
No recent politician filings found
Funds
- BlackRock, trimmed -$5.8M, holdings at Jun 30
Lean short · thin0 added · 1 trimmed
Quarter-end 13F holdings changes, not live trades. A trim is not a short.
Fin-fluencers
No recent posts found

Each bar is 100% of that source’s money. The notch marks an even split.

Lean is the direction of the latest moves. Descriptive, not advice.

Questions about QSI filings

Are insiders buying or selling QuantumSi Inc (QSI) stock?

Which members of Congress have traded QSI recently?

None. No member of Congress disclosed a QSI trade with a trade date in the last 180 days, according to House and Senate STOCK Act filings.

How current is this QSI smart-money data?

Funds

What funds are doing

1 move · 6 mo

Sells/Trims$5.8M

Sells/Trims (1)

BR
BlackRock
Q2 2026 13F
$5.8M
trimmed
Signals like this: n=7469, 53% finished lower at D15, median -0.5% vs SPY -0.4%

Unlock everything for $29/month

Unlock for $29/month

Reported Aug 13, 2026

Results versus expectations

Documents

Quarterly report10-Q Annual report10-K Every filing

Last report

Aug 13, 2026

Period ending

Jun 30, 2026

Earnings per share

Unavailable

EPS comparison unavailable

Revenue

$344.0K

SEC filing

Next report

Estimated report: Nov 4, 2026, in 4 days

Previous reports

Quarter / reported	Earnings per share	Beat or miss	Revenue / income	Revenue vs last year
Jun 30, 2026Reported Aug 13, 2026	Not on file	No estimate	$344.0KSEC filing	-41.8%from $591.0K
Mar 31, 2026Reported May 7, 2026	-$0.09est. -$0.10	+10.00%beat	$258.0KSEC filing	-69.4%from $842.0K
Dec 31, 2025Reported Mar 3, 2026	-$0.08est. -$0.12	+38.20%beat	$2.4M · FYSEC filing	No year-ago quarter
Sep 30, 2025Reported Nov 5, 2025	-$0.17est. -$0.17	+0.00%in line	$552.0KSEC filing	-29.9%from $787.0K
Jun 30, 2025Reported Aug 5, 2025	-$0.11est. -$0.13	+15.38%beat	$591.0KSEC filing	-5.0%from $622.0K
Mar 31, 2025Reported May 15, 2025	-$0.11est. -$0.17	+35.29%beat	$842.0KSEC filing	+84.2%from $457.0K
Dec 31, 2024Reported Mar 3, 2025	-$0.16est. -$0.19	+13.89%beat	$3.1M · FYSEC filing	No year-ago quarter
Sep 30, 2024Reported Nov 12, 2024	-$0.16est. -$0.18	+11.11%beat	$787.0KSEC filing	+252.9%from $223.0K

Earnings per share comes from Yahoo Finance where available, then Alpha Vantage or the company release. Revenue comes from company releases, SEC filings, Alpha Vantage or Yahoo Finance. A beat or miss needs an analyst estimate on the same basis as the reported figure, so quarters without one show none. Non-USD amounts carry their currency code.

Open: $1.63
52-wk high: $2.19
High: $1.73
52-wk low: $0.69
Low: $1.59
Prev close: $1.65
Mkt cap: $319.6M
ROE: -49.1%
Beta: 3.22
P/S: 199.1x
P/B: 2.1x
Profit margin: +0.0%
Op margin: -7450.0%

Fundamentals

Is the business strong?

This company is running thin margins.

Net margin: 0.0%
Market cap: $320M

Valuation

P/S199.11
P/B2.13

Quality

Operating margin-7450.0%
ROE-49.1%
ROA-25.7%

Growth

Beta3.22

Technicals

Price structure

This stock is in a strong uptrend.

Trend

Strong uptrend

100 / 100

RSI 14

65balanced

20D volatility

195%annualized

52-week range

$1.72

$0.69$2.19

20D support

$1.01recent floor

20D resistance

$1.75recent ceiling

Returns

5D +39.8%20D +60.7%60D +124.7%

Price vs moving averages

SMA20 +27.6%SMA50 +70.1%SMA200 +79.3%

Volume pace

3.78xvs prior 20D

Smart money at a glance

Filings to Oct 31, 2026

Net selling: insiders sold $39K and bought $0 on the open market in 90 days (SEC Form 4). Congress: no trades disclosed in 180 days.

Company insidersSEC Form 4, last 90 days: -$39K netNet selling
CongressSTOCK Act, last 180 days: NoneNo trades disclosed
Big fundsSEC 13F, quarter ended Jun 30, 2026: 0 added, 1 cutMore cutting

Analysts

What do analysts expect?

Analyst target and ratings are on paid plans

See the 12-month consensus target and the buy/hold/sell rating split.

Unlock the full results

Questions about QSI filings

Are insiders buying or selling QuantumSi Inc (QSI) stock?

Which members of Congress have traded QSI recently?

None. No member of Congress disclosed a QSI trade with a trade date in the last 180 days, according to House and Senate STOCK Act filings.

How current is this QSI smart-money data?

13F: filed up to 45 days late.

Smart money on QSI

Lean short2 sources:
- Insiders
- Funds

Top traders
No tracked positions at the last update
Insiders
Lean short3 sales · $39.4K
Form 4 filings, open market.
Politicians
No recent politician filings found
Funds
- BlackRock, trimmed -$5.8M, holdings at Jun 30
Lean short · thin0 added · 1 trimmed
Quarter-end 13F holdings changes, not live trades. A trim is not a short.
Fin-fluencers
No recent posts found

Each bar is 100% of that source’s money. The notch marks an even split.

Lean is the direction of the latest moves. Descriptive, not advice.

Questions about QSI filings

Are insiders buying or selling QuantumSi Inc (QSI) stock?

Which members of Congress have traded QSI recently?

None. No member of Congress disclosed a QSI trade with a trade date in the last 180 days, according to House and Senate STOCK Act filings.

How current is this QSI smart-money data?

Funds

What funds are doing

1 move · 6 mo

Sells/Trims$5.8M

Sells/Trims (1)

BR
BlackRock
Q2 2026 13F
$5.8M
trimmed
Signals like this: n=7469, 53% finished lower at D15, median -0.5% vs SPY -0.4%

Unlock everything for $29/month

Unlock for $29/month

Reported Aug 13, 2026

Results versus expectations

Documents

Quarterly report10-Q Annual report10-K Every filing

Last report

Aug 13, 2026

Period ending

Jun 30, 2026

Earnings per share

Unavailable

EPS comparison unavailable

Revenue

$344.0K

SEC filing

Next report

Estimated report: Nov 4, 2026, in 4 days

Previous reports

Quarter / reported	Earnings per share	Beat or miss	Revenue / income	Revenue vs last year
Jun 30, 2026Reported Aug 13, 2026	Not on file	No estimate	$344.0KSEC filing	-41.8%from $591.0K
Mar 31, 2026Reported May 7, 2026	-$0.09est. -$0.10	+10.00%beat	$258.0KSEC filing	-69.4%from $842.0K
Dec 31, 2025Reported Mar 3, 2026	-$0.08est. -$0.12	+38.20%beat	$2.4M · FYSEC filing	No year-ago quarter
Sep 30, 2025Reported Nov 5, 2025	-$0.17est. -$0.17	+0.00%in line	$552.0KSEC filing	-29.9%from $787.0K
Jun 30, 2025Reported Aug 5, 2025	-$0.11est. -$0.13	+15.38%beat	$591.0KSEC filing	-5.0%from $622.0K
Mar 31, 2025Reported May 15, 2025	-$0.11est. -$0.17	+35.29%beat	$842.0KSEC filing	+84.2%from $457.0K
Dec 31, 2024Reported Mar 3, 2025	-$0.16est. -$0.19	+13.89%beat	$3.1M · FYSEC filing	No year-ago quarter
Sep 30, 2024Reported Nov 12, 2024	-$0.16est. -$0.18	+11.11%beat	$787.0KSEC filing	+252.9%from $223.0K

Open: $1.63
52-wk high: $2.19
High: $1.73
52-wk low: $0.69
Low: $1.59
Prev close: $1.65
Mkt cap: $319.6M
ROE: -49.1%
Beta: 3.22
P/S: 199.1x
P/B: 2.1x
Profit margin: +0.0%
Op margin: -7450.0%

Fundamentals

Is the business strong?

This company is running thin margins.

Net margin: 0.0%
Market cap: $320M

Valuation

P/S199.11
P/B2.13

Quality

Operating margin-7450.0%
ROE-49.1%
ROA-25.7%

Growth

Beta3.22

Technicals

Price structure

This stock is in a strong uptrend.

Trend

Strong uptrend

100 / 100

RSI 14

65balanced

20D volatility

195%annualized

52-week range

$1.72

$0.69$2.19

20D support

$1.01recent floor

20D resistance

$1.75recent ceiling

Returns

5D +39.8%20D +60.7%60D +124.7%

Price vs moving averages

SMA20 +27.6%SMA50 +70.1%SMA200 +79.3%

Volume pace

3.78xvs prior 20D

QuantumSi Inc

Smart money at a glance

What do analysts expect?

Questions about QSI filings

Smart money on QSI

Questions about QSI filings

What funds are doing

What insiders are doing

How top traders are positioned

Unlock everything for $29/month

Results versus expectations

Estimated report: Nov 4, 2026, in 4 days

Previous reports

Is the business strong?

Price structure

Ask it in Claude or ChatGPT.

QuantumSi Inc

Smart money at a glance

What do analysts expect?

Questions about QSI filings

Smart money on QSI

Questions about QSI filings

What funds are doing

What insiders are doing

How top traders are positioned

Unlock everything for $29/month

Results versus expectations

Estimated report: Nov 4, 2026, in 4 days

Previous reports

Is the business strong?

Price structure

Ask it in Claude or ChatGPT.

QuantumSi Inc

Overview

Questions about QSI filings

Smart money

Unlock everything for $29/month

Earnings

Previous reports

Financials

Technicals

Ask it in Claude or ChatGPT.

QuantumSi Inc

Overview

Questions about QSI filings

Smart money

Unlock everything for $29/month

Earnings

Previous reports

Financials

Technicals

Ask it in Claude or ChatGPT.