0.9626
price up icon3.40%   0.0322
 
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Quantum Si Incorporated stock is traded at $0.9626, with a volume of 1.81M. It is up +3.40% in the last 24 hours and down -8.38% over the past month. Quantum-Si Inc is a life sciences company focused on proteomics research and analytical technologies. It develops single-molecule detection platforms designed to enable next-generation protein sequencing (NGPS) and large-scale protein analysis. Its technology supports massively parallel sequencing of proteins and can also be applied to the study of nucleic acids, providing tools for researchers and clinical applications in molecular analysis. The company's revenue is derived from sales of products and services.
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Previous Close:
$0.9304
Open:
$0.928
24h Volume:
1.81M
Relative Volume:
0.30
Market Cap:
$209.81M
Revenue:
$1.85M
Net Income/Loss:
$-103.82M
P/E Ratio:
-1.8797
EPS:
-0.5121
Net Cash Flow:
$-95.69M
1W Performance:
+8.23%
1M Performance:
-8.38%
6M Performance:
-24.84%
1Y Performance:
-55.04%
1-Day Range:
Value
$0.9275
$0.9799
1-Week Range:
Value
$0.87
$1.01
52-Week Range:
Value
$0.6912
$3.10

Quantum Si Incorporated Stock (QSI) Company Profile

Name
Name
Quantum Si Incorporated
Name
Phone
(203) 458-7100
Name
Address
29 BUSINESS PARK DRIVE, BRANFORD
Name
Employee
145
Name
Twitter
Name
Next Earnings Date
2026-08-04
Name
Latest SEC Filings
Name
QSI's Discussions on Twitter

Compare QSI vs ABT, SYK, MDT, BSX, EW

Stocks Price Market Cap Revenue Net Income Cash Flow EPS
QSI icon
QSI
Quantum Si Incorporated
0.9635 192.72M 1.85M -103.82M -95.69M -0.5121
ABT icon
ABT
Abbott Laboratories
95.83 158.05B 45.13B 6.28B 7.38B 3.5895
SYK icon
SYK
Stryker Corp
326.45 120.70B 25.27B 3.34B 4.57B 8.6334
MDT icon
MDT
Medtronic Plc
83.67 100.14B 36.36B 4.84B 5.43B 3.7212
BSX icon
BSX
Boston Scientific Corp
45.05 63.44B 20.62B 3.56B 3.48B 2.3847
EW icon
EW
Edwards Lifesciences Corp
95.44 52.09B 6.30B 1.07B 1.09B 1.8406

Quantum Si Incorporated Stock (QSI) Upgrades & Downgrades

Date Action Analyst Rating Change
Feb-07-25 Initiated Alliance Global Partners Buy
Dec-08-23 Initiated H.C. Wainwright Buy
Sep-25-23 Downgrade Canaccord Genuity Buy → Hold
Oct-20-21 Initiated Canaccord Genuity Buy

Quantum Si Incorporated Stock (QSI) Latest News

pulisher
Jul 02, 2026

Shareholders Can't Ignore US$614k Of Sales By Quantum-Si Insiders - simplywall.st

Jul 02, 2026
pulisher
Jun 27, 2026

Price to book forward of Quantum-Si Incorporated – NASDAQ:QSI - TradingView

Jun 27, 2026
pulisher
Jun 27, 2026

Enterprise value to EBITDA forward of Quantum-Si Incorporated – NASDAQ:QSI - TradingView

Jun 27, 2026
pulisher
Jun 26, 2026

Quantum-Si Incorporated Class A Actuals & Estimates (NASDAQ:QSI) - TradingView

Jun 26, 2026
pulisher
Jun 25, 2026

QSI Forecast — Price Target — Prediction for 2027 - TradingView

Jun 25, 2026
pulisher
Jun 25, 2026

Quantum-Si (QSI) CEO Jeffrey Hawkins reports $20,996 stock sale - Investing.com UK

Jun 25, 2026
pulisher
Jun 25, 2026

Quantum-Si (QSI) CEO Jeffrey Hawkins reports $20,996 stock sale By Investing.com - Investing.com Australia

Jun 25, 2026
pulisher
Jun 25, 2026

Form 4 QuantumSi Inc For: 24 June By Investing.com - Investing.com Australia

Jun 25, 2026
pulisher
Jun 24, 2026

Form 144 Quantum-Si Inc For: 24 June By Investing.com - Investing.com Australia

Jun 24, 2026
pulisher
Jun 24, 2026

Quantum-Si CPO John Vieceli sells $28,052 in stock By Investing.com - Investing.com Nigeria

Jun 24, 2026
pulisher
Jun 24, 2026

Quantum-Si CPO John Vieceli sells $28,052 in stock - Investing.com

Jun 24, 2026
pulisher
Jun 24, 2026

Quantum-Si (QSI) CPO sells 30,223 shares to cover RSU tax withholding - Stock Titan

Jun 24, 2026
pulisher
Jun 24, 2026

Quantum-Si (QSI) CFO offloads 8,233 shares in mandatory tax sell-to-cover - Stock Titan

Jun 24, 2026
pulisher
Jun 24, 2026

Quantum‑Si (NASDAQ: QSI) plans sale of 79,589 RSU shares via Morgan Stanley - Stock Titan

Jun 24, 2026
pulisher
Jun 24, 2026

Quantum-Si Q1 earnings call highlights - MSN

Jun 24, 2026
pulisher
Jun 24, 2026

Quantum-Si Enters Long-Term San Diego Facility Lease - TipRanks

Jun 24, 2026
pulisher
Jun 24, 2026

Quantum-Si (QSI) signs 10-year San Diego lab and manufacturing lease - Stock Titan

Jun 24, 2026
pulisher
Jun 24, 2026

Quantum-Si Inc Enters into Lease Agreement for New Office, Laboratory, and Manufacturing Space in San Diego - marketscreener.com

Jun 24, 2026
pulisher
Jun 21, 2026

Quantum-Si (QSI) Q4 2024 earnings summary - Quartr

Jun 21, 2026
pulisher
Jun 17, 2026

Quantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4)June 16, 2026 - BioSpace

Jun 17, 2026
pulisher
Jun 14, 2026

Quantum-Si Incorporated (QSI) Nears Key Support After 2.67% DeclineFear Greed Extreme - newsline.com

Jun 14, 2026
pulisher
Jun 14, 2026

Quantum-Si (QSI) Tests Key Support at $0.9 as Selling Pressure IntensifiesWatchlist Stock Ideas - newsline.com

Jun 14, 2026
pulisher
Jun 12, 2026

QSI Price Today: Quantum-Si Incorporated Stock Price, Quote & Chart | MEXC - MEXC

Jun 12, 2026
pulisher
Jun 10, 2026

Quantum-Si partners with CST on protein sequencing validation - Investing.com UK

Jun 10, 2026
pulisher
Jun 10, 2026

Quantum-Si (QSI) Form 25: Nasdaq withdrawal of warrants listing - Stock Titan

Jun 10, 2026
pulisher
Jun 10, 2026

Quantum-Si and Cell Signaling Technology Partner to Advance Post-Translational Modification Analysis on Proteus - Investing News Network

Jun 10, 2026
pulisher
Jun 10, 2026

Quantum-Si partners with CST on protein sequencing validation By Investing.com - Investing.com Canada

Jun 10, 2026
pulisher
Jun 10, 2026

Quantum-Si and Cell Signaling Technology Partner to Advance Post-Translational Modification Analysis on Proteus™ - Yahoo Finance

Jun 10, 2026
pulisher
Jun 10, 2026

QSI Q1 2026 Earnings: Narrower-Than-Expected Loss Fails to Lift SharesProfitability Analysis - newsline.com

Jun 10, 2026
pulisher
Jun 08, 2026

Quantum-Si (QSI) Edges Higher: Testing Key Resistance at $1.11Post-Earnings Moves - newsline.com

Jun 08, 2026
pulisher
Jun 05, 2026

Quantum-Si (QSI) Declines Sharply, Testing Critical Support at $1.0Gap and Go - newsline.com

Jun 05, 2026
pulisher
Jun 04, 2026

Quantum-Si expands roadshow for Proteus protein sequencing platform By Investing.com - Investing.com South Africa

Jun 04, 2026
pulisher
Jun 04, 2026

Quantum-Si expands roadshow for Proteus protein sequencing platform - Investing.com UK

Jun 04, 2026
pulisher
Jun 03, 2026

Quantum-Si launches roadshow for Proteus protein sequencing platform By Investing.com - Investing.com Australia

Jun 03, 2026
pulisher
Jun 03, 2026

Quantum-Si Announces the Expansion of the Proteus Roadshow - Investing News Network

Jun 03, 2026
pulisher
Jun 03, 2026

Quantum-Si launches roadshow for Proteus protein sequencing platform - Investing.com

Jun 03, 2026
pulisher
Jun 03, 2026

Quantum-Si Expands 2026 Proteus Protein Sequencing Roadshow Across North America and Europe - geneonline.com

Jun 03, 2026
pulisher
Jun 03, 2026

Quantum-Si Announces the Expansion of the Proteus™ Roadshow - The Joplin Globe

Jun 03, 2026
pulisher
Jun 02, 2026

Quantum-Si Stock Jumps as Traders Bet on Proteus Launch — Here’s What Could Move QSI Next - Bez Kabli

Jun 02, 2026
pulisher
May 31, 2026

Is Quantum-Si (NASDAQ:QSI) In A Good Position To Invest In Growth? - Yahoo Finance

May 31, 2026
pulisher
May 29, 2026

Quantum-Si Shares Decline 2.9%, Testing Key Support ZoneLast Point Resistance - The Legal Advocate

May 29, 2026
pulisher
May 29, 2026

QSIAW Plunges 10.71% to $0.03: Warrants Test Critical Floor Amid Low LiquidityIchimoku Entry - dars.gov.et

May 29, 2026
pulisher
May 28, 2026

Quantum-Si Warrant (QSIAW) Inches Higher but Remains Near All-Time LowsThematic ETF Flow - newsline.com

May 28, 2026
pulisher
May 26, 2026

QSIQuantum-Si Incorporated Short Interest - Finviz

May 26, 2026

Quantum Si Incorporated Stock (QSI) Financials Data

Revenue

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Net Income

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Cash Flow

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EPS

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Quantum Si Incorporated Stock (QSI) Insider Trading

Insider Trading Relationship Date Transaction Cost #Shares Value ($) #Shares Total
LaPointe Christian
GC & Corp. Secretary
Jun 23 '26
Sale
0.90
7,794
7,007
1,182,429
Keyes Jeffry R.
Chief Financial Officer
Jun 22 '26
Sale
0.96
4,116
3,941
1,728,466
Keyes Jeffry R.
Chief Financial Officer
Jun 23 '26
Sale
0.90
4,117
3,701
1,724,349
Vieceli John S.
Chief Product Officer
Jun 22 '26
Sale
0.96
15,111
14,467
1,155,546
Vieceli John S.
Chief Product Officer
Jun 23 '26
Sale
0.90
15,112
13,586
1,140,434
Hawkins Jeffrey Alan
President & CEO
Jun 22 '26
Sale
0.96
11,310
10,828
3,681,113
Hawkins Jeffrey Alan
President & CEO
Jun 23 '26
Sale
0.90
11,311
10,169
3,669,802
ZBH ZBH
$90.48
price up icon 3.43%
STE STE
$214.36
price down icon 1.82%
PHG PHG
$28.13
price up icon 1.39%
$71.85
price up icon 0.76%
$65.54
price down icon 0.43%
EW EW
$95.50
price up icon 0.97%
Cap:     |  Volume (24h):