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Quantum-Si Inc (NASDAQ:QSI)

US · Delayed Price · Currency is USD
1.43+0.36 (+33.64%)
 
Market Cap282.89M-2.0%
Revenue (ttm)1.60M-53.0%
Net Income-98.52M+7.5%
EPS-0.46+31.7%
Shares Out197.82M
PE Ration/a
Forward PEn/a
Dividendn/a
Ex-Dividend Daten/a
Volume32,524,337
Open1.20
Previous Close1.07
Day's Range1.15 - 1.48
52-Week Range0.69 - 3.10
Beta3.25
AnalystsBuy
Price Target1.90(+32.87%)
Earnings DateNov 4, 2026
Insider Score
/ 100
QSI Insider Score

Quantum-Si Inc has a live Insider Score.

Scored on 0 qualifying trades from 0 insiders in the last 90 days.

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About QSI

Quantum-Si incorporated operates within the life sciences sector, focusing on the creation of an advanced platform for individual molecule detection. This innovative technology is designed to streamline sample preparation and subsequent sequencing processes. The company offers a unique, proprietary single molecule detection system that draws on advancements from the semiconductor industry. This system is specifically applied to the field of proteomics, paving the way for next-generation protein sequencing. Established in 2013, Quantum-Si's headquarters are located in Guilford, Connecticut.

Address
29 Business Park Drive, Branford, CT, 06405, US
Market Cap
283 million
Employees
145
Industrial Classification
Medical - Devices

What Are Insiders Doing?

Open-market buy / sell balanceBalanced
Sold
$409.86K
Bought
$460.00K

View the trades behind this meter — each links to its SEC Form 4 →

Open-market Form 4 purchases (code P) vs sales (code S) on file for this company. Grants, option exercises and tax withholdings are excluded. Informational only.

1 Day
+33.64%
5 Days
+80.03%
1 Month
+88.83%
6 Months
+91.28%
1 Year
-2.05%

$QSI stock is featured in our Insider Score Rankings, and Insider Trades datasets.

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Recently reported changes in QSI holdings by institutional investors

Scanning latest 13F filings…

Latest 0 13F filings · Source: SEC EDGAR

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Insider Trading

Quarterly net insider trading by QSI's directors and management

Net Shares Purchased by Insiders−500k−250k02025Q42026Q12026Q22026Q32026Q4

Source: SEC EDGAR (Form 4)

Corporate Lobbying

QSI Estimated quarterly lobbying spending

Source: U.S. Senate LDA

QSI Revenue by Segment or Geography

QSI's latest filing doesn't break out revenue by segment.

As of: Q2 2026 (Jun 30, 2026) · Source: SEC EDGAR (10-Q)

U.S. Patents

New QSI patent grants

Loading patent grants…

Source: USPTO Open Data Portal

Government Contracts

Estimated quarterly amount awarded to QSI from public contracts

Source: USAspending.gov

Top ETF Holders

ETFs with the largest estimated holdings in QSI

ETFEst. Holding Size
ARKGARK Genomic Revolution ETF$7.44M
VTIVanguard Morningstar Total Stock Market ETF$4.10M
VXFVanguard Extended Market ETF$1.59M
IBBiShares Biotechnology ETF$1.01M
PRFZInvesco RAFI US 1500 Small-Mid ETF$455.92K
VHTVanguard Health Care ETF$385.39K

Estimated from each fund’s disclosed top holdings × AUM

QSI Insider Score

Our composite score: insider buying, sector, volume, tone & dilution

Members only

The live Insider Score for QSI is included with Insider Access.

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Bull Case vs Bear Case

AI-generated from QSI’s recent data — informational, not investment advice

Generating analysis…

Insider Score

Our 0–100 Insider Score and the signals behind it.

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Recent Insider Activity

Buys
1
Sells
26
Buy Value
$460.00K
Distinct Buyers
1

Frequently Asked Questions

Disclaimer — Informational only — not investment advice. Insider transaction data is sourced from SEC Form 4 filings; market data from public feeds and may be delayed. The Insider Score is a proprietary score for research purposes and does not predict future performance. Always do your own research.
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