0.91
price down icon4.01%   -0.038
pre-market  Pre-market:  .91  
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Quantum Si Incorporated stock is traded at $0.91, with a volume of 2.92M. It is down -4.01% in the last 24 hours and down -11.65% over the past month. Quantum-Si Inc is a life sciences company focused on the development and commercialization of proteomics research tools. The company has designed and developed a hardware, consumable, and software solution to provide a solution for protein detection and analysis. It has developed a proprietary universal single-molecule detection platform that enables Next-Generation Protein Sequencing (NGPS), the ability to sequence proteins.
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Previous Close:
$0.948
Open:
$0.948
24h Volume:
2.92M
Relative Volume:
0.66
Market Cap:
$196.10M
Revenue:
-
Net Income/Loss:
$-95.96M
P/E Ratio:
-1.3382
EPS:
-0.68
Net Cash Flow:
$-99.31M
1W Performance:
-8.09%
1M Performance:
-11.65%
6M Performance:
-14.95%
1Y Performance:
-34.06%
1-Day Range:
Value
$0.91
$0.975
1-Week Range:
Value
$0.8973
$1.025
52-Week Range:
Value
$0.887
$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
143
Name
Twitter
Name
Next Earnings Date
2025-03-03
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
Medical Devices icon
QSI
Quantum Si Incorporated
0.91 204.28M 0 -95.96M -99.31M -0.68
Medical Devices icon
ABT
Abbott Laboratories
113.10 197.42B 44.33B 6.50B 7.40B 3.717
Medical Devices icon
SYK
Stryker Corp
381.89 147.18B 25.12B 3.25B 4.28B 8.3984
Medical Devices icon
MDT
Medtronic Plc
95.60 124.16B 35.48B 4.64B 5.41B 3.582
Medical Devices icon
BSX
Boston Scientific Corp
72.21 109.58B 20.08B 2.89B 3.66B 1.9391
Medical Devices icon
EW
Edwards Lifesciences Corp
85.22 49.49B 6.07B 1.06B 1.34B 1.8063

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
01:04 AM

AI Reliance Poses Growing Regulatory and Operational Risks for Quantum-Si - TipRanks

01:04 AM
pulisher
Mar 03, 2026

QSI: 2026 focuses on consumables growth and Proteus launch, with strong cash reserves and cost control - TradingView

Mar 03, 2026
pulisher
Mar 03, 2026

QSI: 2026 will see minimal instrument sales, with revenue driven by consumables ahead of the Proteus launch - TradingView

Mar 03, 2026
pulisher
Mar 03, 2026

Quantum-Si Q4 Earnings Call Highlights - MarketBeat

Mar 03, 2026
pulisher
Mar 03, 2026

QSI: 2025 revenue fell 20% to $2.4M, net loss was $101.3M, and $93.5M was raised in equity offerings - TradingView

Mar 03, 2026
pulisher
Mar 03, 2026

Quantum-Si Incorporated (QSI) Stock Falls on Q4 2025 Earnings - Quiver Quantitative

Mar 03, 2026
pulisher
Mar 03, 2026

Quantum-Si (NASDAQ:QSI) Issues Earnings Results, Beats Estimates By $0.06 EPS - MarketBeat

Mar 03, 2026
pulisher
Mar 03, 2026

Quantum-Si (QSI) details proteomics strategy, Platinum line and Proteus plan - Stock Titan

Mar 03, 2026
pulisher
Mar 03, 2026

Quantum-Si incorporated Reports Earnings Results for the Full Year Ended December 31, 2025 - marketscreener.com

Mar 03, 2026
pulisher
Mar 03, 2026

Quantum-Si (QSI) Q4 2025 Earnings Call Transcript - The Globe and Mail

Mar 03, 2026
pulisher
Mar 03, 2026

[8-K] Quantum-Si Inc Reports Material Event | QSI SEC FilingForm 8-K - Stock Titan

Mar 03, 2026
pulisher
Mar 03, 2026

Quantum-Si incorporated Provides Earnings Guidance for the Full Year 2026 - marketscreener.com

Mar 03, 2026
pulisher
Mar 02, 2026

QSIAW Stock Price, News & Analysis - Stock Titan

Mar 02, 2026
pulisher
Mar 02, 2026

Examining the Future: Quantum-Si's Earnings Outlook - Sahm

Mar 02, 2026
pulisher
Feb 28, 2026

US Market Wrap: Can Quantum Si incorporated Equity Warrant maintain its current growth rate2025 Winners & Losers & Reliable Trade Execution Plans - baoquankhu1.vn

Feb 28, 2026
pulisher
Feb 26, 2026

Director Amir Jafri granted 114,055 Quantum-Si (QSI) stock options - Stock Titan

Feb 26, 2026
pulisher
Feb 26, 2026

Fund Flows: Is Quantum Si incorporated forming a bullish divergence2025 AllTime Highs & Low Risk Entry Point Guides - baoquankhu1.vn

Feb 26, 2026
pulisher
Feb 26, 2026

Quantum-Si Incorporated (QSI) Stock Analysis: Exploring a Potential 171% Upside in the Healthcare Sector - DirectorsTalk Interviews

Feb 26, 2026
pulisher
Feb 24, 2026

Stop Loss: How much upside does Quantum Si incorporated Equity Warrant haveFed Meeting & Growth Focused Stock Reports - baoquankhu1.vn

Feb 24, 2026
pulisher
Feb 24, 2026

Quantum-Si (QSI) to Release Earnings on Tuesday - MarketBeat

Feb 24, 2026
pulisher
Feb 22, 2026

Can Quantum Si incorporated Equity Warrant be recession proofPortfolio Performance Summary & Smart Swing Trading Alerts - mfd.ru

Feb 22, 2026
pulisher
Feb 21, 2026

Is Quantum Si incorporated Equity Warrant stock a good pick for beginnersWeekly Trend Recap & Risk Controlled Daily Plans - mfd.ru

Feb 21, 2026
pulisher
Feb 21, 2026

Risk Off: Does Quantum Si incorporated stock reflect fundamentalsJuly 2025 Analyst Calls & High Accuracy Swing Trade Signals - baoquankhu1.vn

Feb 21, 2026
pulisher
Feb 20, 2026

How Quantum Si incorporated Equity Warrant stock performs in interest rate cycles2025 Volatility Report & Growth Oriented Trading Recommendations - mfd.ru

Feb 20, 2026
pulisher
Feb 20, 2026

How cyclical is Quantum Si incorporated Equity Warrant’s revenue streamWeekly Profit Recap & AI Powered Trade Plan Recommendations - mfd.ru

Feb 20, 2026
pulisher
Feb 20, 2026

Is Quantum Si incorporated a stock for growth or value investorsInflation Watch & Reliable Price Breakout Signals - mfd.ru

Feb 20, 2026
pulisher
Feb 20, 2026

Why Quantum Si incorporated Equity Warrant stock could rally in 2025Quarterly Earnings Report & Technical Pattern Based Signals - mfd.ru

Feb 20, 2026
pulisher
Feb 19, 2026

Portfolio Shifts: Whats the profit margin of Quantum Si incorporated Equity Warrant2025 Big Picture & Technical Pattern Based Buy Signals - baoquankhu1.vn

Feb 19, 2026
pulisher
Feb 19, 2026

Quantum-Si Incorporated (QSI) Stock Analysis: Exploring a 196% Potential Upside in the Medical Devices Sector - DirectorsTalk Interviews

Feb 19, 2026
pulisher
Feb 19, 2026

Quarterly Trades: Does Quantum Si incorporated Equity Warrant align with a passive investing strategyJuly 2025 Setups & Momentum Based Trading Ideas - baoquankhu1.vn

Feb 19, 2026
pulisher
Feb 18, 2026

Quantum-Si (NASDAQ:QSI) Stock Price Down 5.2%Here's Why - MarketBeat

Feb 18, 2026
pulisher
Feb 16, 2026

Does Quantum Si incorporated have pricing powerPortfolio Risk Summary & AI Forecast Swing Trade Picks - mfd.ru

Feb 16, 2026
pulisher
Feb 16, 2026

Quantum-Si announces inducement grants - Medical Buyer

Feb 16, 2026
pulisher
Feb 14, 2026

How Quantum Si incorporated Equity Warrant stock performs in stagflation2025 Retail Activity & Stock Portfolio Risk Management - mfd.ru

Feb 14, 2026
pulisher
Feb 14, 2026

How sensitive is Quantum Si incorporated to inflationDay Trade & Daily Stock Trend Reports - mfd.ru

Feb 14, 2026
pulisher
Feb 14, 2026

Can Quantum Si incorporated Equity Warrant stock beat market expectations this quarterJuly 2025 Catalysts & Accurate Entry/Exit Alerts - mfd.ru

Feb 14, 2026
pulisher
Feb 14, 2026

Tech Rally: Is OCCIN subject to activist investor interestPrice Action & Low Risk Growth Stock Ideas - baoquankhu1.vn

Feb 14, 2026
pulisher
Feb 13, 2026

Quantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4) - Business Wire

Feb 13, 2026
pulisher
Feb 13, 2026

What drives Quantum Si incorporated Equity Warrant’s stock priceMarket Movement Recap & Daily Entry Point Trade Alerts - mfd.ru

Feb 13, 2026
pulisher
Feb 13, 2026

Will Quantum Si incorporated outperform during market ralliesEarnings Recap Report & Risk Managed Investment Strategies - mfd.ru

Feb 13, 2026
pulisher
Feb 12, 2026

How much upside does Quantum Si incorporated Equity Warrant haveJuly 2025 Setups & Verified Trade Idea Suggestions - mfd.ru

Feb 12, 2026
pulisher
Feb 12, 2026

Quantum-Si Incorporated (QSI) Investor Outlook: Exploring A Potential 158% Upside - DirectorsTalk Interviews

Feb 12, 2026
pulisher
Feb 11, 2026

Does Quantum Si incorporated Equity Warrant align with a passive investing strategyJuly 2025 Update & Reliable Entry Point Trade Alerts - mfd.ru

Feb 11, 2026
pulisher
Feb 11, 2026

CEO Moves: Is Quantum Si incorporated Equity Warrant currently under institutional pressureMarket Rally & Fast Exit and Entry Trade Guides - baoquankhu1.vn

Feb 11, 2026
pulisher
Feb 10, 2026

Quantum-Si to Report Fourth Quarter and Full Year 2025 Financial Results on March 3, 2026 - Investing News Network

Feb 10, 2026
pulisher
Feb 09, 2026

Investment Review: How sensitive is Quantum Si incorporated to inflationJuly 2025 Trends & AI Powered Market Entry Ideas - baoquankhu1.vn

Feb 09, 2026
pulisher
Feb 09, 2026

What are Quantum Si incorporated’s recent SEC filings showingMarket Growth Review & Real-Time Chart Breakout Alerts - mfd.ru

Feb 09, 2026
pulisher
Feb 08, 2026

Can Quantum Si incorporated stock resist sector downturns2025 Momentum Check & Fast Gaining Stock Reports - mfd.ru

Feb 08, 2026
pulisher
Feb 05, 2026

Quantum-Si Announces the Release of Two New Manuscripts Demonstrating the Value of Single-Molecule Protein Sequencing in Clinical Proteomics and Pathogen & Toxin Detection - Business Wire

Feb 05, 2026
pulisher
Feb 05, 2026

Quantum-Si Incorporated (QSI) Stock Analysis: Unveiling a 160% Potential Upside in the Medical Device Sector - DirectorsTalk Interviews

Feb 05, 2026
pulisher
Feb 04, 2026

Quantum-Si Falls To US$1.09, But Insiders Sold At Lower Price - simplywall.st

Feb 04, 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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medical_devices ZBH
$95.75
price down icon 2.27%
medical_devices STE
$243.07
price down icon 0.12%
$72.90
price down icon 0.25%
medical_devices PHG
$30.93
price up icon 1.94%
$79.02
price up icon 1.14%
medical_devices EW
$85.22
price down icon 0.07%
Cap:     |  Volume (24h):