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Quantum Si Incorporated stock is traded at $1.27, with a volume of 5.20M. It is up +2.42% in the last 24 hours and down -45.73% 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:
$1.24
Open:
$1.22
24h Volume:
5.20M
Relative Volume:
0.46
Market Cap:
$248.35M
Revenue:
-
Net Income/Loss:
$-95.96M
P/E Ratio:
-1.8676
EPS:
-0.68
Net Cash Flow:
$-99.31M
1W Performance:
-7.30%
1M Performance:
-45.73%
6M Performance:
-13.90%
1Y Performance:
+4.96%
1-Day Range:
Value
$1.19
$1.28
1-Week Range:
Value
$1.19
$1.41
52-Week Range:
Value
$0.9499
$5.77

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 with other stocks

Stocks Price Market Cap Revenue Net Income Cash Flow EPS
Medical Devices icon
QSI
Quantum Si Incorporated
1.27 267.21M 0 -95.96M -99.31M -0.68
Medical Devices icon
ABT
Abbott Laboratories
128.11 215.57B 43.84B 13.90B 6.92B 7.9725
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BSX
Boston Scientific Corp
96.88 143.20B 19.35B 2.78B 3.82B 1.8696
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SYK
Stryker Corp
368.27 137.86B 24.38B 2.94B 4.07B 7.6159
Medical Devices icon
MDT
Medtronic Plc
101.20 127.43B 34.76B 4.79B 5.21B 3.7049
Medical Devices icon
EW
Edwards Lifesciences Corp
85.13 48.80B 5.88B 1.34B 799.60M 2.3489

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
Nov 21, 2025

Quantum-Si stock rating reiterated by H.C. Wainwright on Proteus potential - Investing.com Nigeria

Nov 21, 2025
pulisher
Nov 21, 2025

Quantum-Si Highlights Significant Development Advancements for Proteus™ and Industry Leading Technology Pipeline at Investor & Analyst Day - BioSpace

Nov 21, 2025
pulisher
Nov 21, 2025

Will Quantum Si incorporated Equity Warrant stock benefit from infrastructure spending - newser.com

Nov 21, 2025
pulisher
Nov 21, 2025

Is Quantum Si incorporated stock attractive for income investorsJuly 2025 Movers & High Yield Equity Trading Tips - newser.com

Nov 21, 2025
pulisher
Nov 20, 2025

Quantum-Si plans proteus protein analysis platform launch by end of 2026 - Investing.com Nigeria

Nov 20, 2025
pulisher
Nov 20, 2025

Quantum-Si Highlights Significant Development Advancements for Proteus and Industry Leading Technology Pipeline at Investor & Analyst Day - Investing News Network

Nov 20, 2025
pulisher
Nov 20, 2025

Quantum-Si Unveils Proteus Advancements at Investor Day - TipRanks

Nov 20, 2025
pulisher
Nov 20, 2025

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

Nov 20, 2025
pulisher
Nov 20, 2025

What earnings revisions data tells us about Quantum Si incorporated Equity WarrantMarket Volume Summary & Short-Term Trading Opportunity Alerts - newser.com

Nov 20, 2025
pulisher
Nov 19, 2025

Is Quantum Si incorporated Equity Warrant stock a contrarian buy2025 Price Momentum & Advanced Technical Signal Analysis - newser.com

Nov 19, 2025
pulisher
Nov 19, 2025

Is Quantum Si incorporated Equity Warrant stock a top pick in earnings seasonEntry Point & Safe Capital Investment Plans - newser.com

Nov 19, 2025
pulisher
Nov 19, 2025

How to use Fibonacci retracement on Quantum Si incorporated Equity Warrant2025 Earnings Impact & Weekly High Momentum Picks - newser.com

Nov 19, 2025
pulisher
Nov 19, 2025

Using Bollinger Bands to evaluate Quantum Si incorporatedTrade Analysis Summary & Detailed Earnings Play Alerts - newser.com

Nov 19, 2025
pulisher
Nov 19, 2025

Quantum-Si unveils Proteus platform prototype ahead of schedule By Investing.com - Investing.com Nigeria

Nov 19, 2025
pulisher
Nov 19, 2025

Can Quantum Si incorporated hit a new high this month2025 Macro Impact & Reliable Volume Spike Trade Alerts - newser.com

Nov 19, 2025
pulisher
Nov 19, 2025

Why Quantum Si incorporated Equity Warrant stock is favored by pension funds2025 Price Action Summary & Verified Technical Signals - newser.com

Nov 19, 2025
pulisher
Nov 19, 2025

Why Quantum Si incorporated stock remains a top recommendationMarket Sentiment Review & Weekly High Return Stock Forecasts - newser.com

Nov 19, 2025
pulisher
Nov 19, 2025

Quantum-Si unveils Proteus platform prototype ahead of schedule - Investing.com India

Nov 19, 2025
pulisher
Nov 19, 2025

Quantum-Si to Highlight Significant Proteus™ Platform Development Progress and Provide Insights into the Company’s Industry Leading Technology Pipeline at Investor & Analyst Day - Bluefield Daily Telegraph

Nov 19, 2025
pulisher
Nov 19, 2025

Quantum-Si Incorporated to Highlight Significant Proteus Platform Development Progress and Provide Insights into the Technology Pipeline At Investor & Analyst Day - MarketScreener

Nov 19, 2025
pulisher
Nov 18, 2025

Does Quantum Si incorporated qualify in momentum factor screeningWeekly Stock Analysis & Free Safe Capital Growth Stock Tips - newser.com

Nov 18, 2025
pulisher
Nov 18, 2025

Can Quantum Si incorporated recover in the next quarterQuarterly Trade Report & Real-Time Volume Analysis Alerts - newser.com

Nov 18, 2025
pulisher
Nov 18, 2025

Using data tools to time your Quantum Si incorporated exit2025 Historical Comparison & Accurate Intraday Trade Tips - newser.com

Nov 18, 2025
pulisher
Nov 16, 2025

Will Quantum Si incorporated Equity Warrant stock deliver better than expected guidanceDay Trade & Weekly Market Pulse Updates - newser.com

Nov 16, 2025
pulisher
Nov 16, 2025

Is Quantum Si incorporated trending in predictive chart modelsPortfolio Risk Summary & Daily Stock Trend Watchlist - newser.com

Nov 16, 2025
pulisher
Nov 16, 2025

What does recent volatility data suggest for Quantum Si incorporatedJuly 2025 Summary & Reliable Volume Spike Alerts - newser.com

Nov 16, 2025
pulisher
Nov 15, 2025

How Quantum Si incorporated stock compares to market leadersGlobal Markets & Consistent Profit Trading Strategies - newser.com

Nov 15, 2025
pulisher
Nov 15, 2025

Both retail investors who control a good portion of Quantum-Si incorporated (NASDAQ:QSI) along with institutions must be dismayed after last week's 13% decrease - simplywall.st

Nov 15, 2025

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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$331.17
price up icon 5.84%
$60.23
price up icon 3.10%
medical_devices STE
$263.29
price up icon 2.46%
medical_devices PHG
$27.26
price up icon 2.06%
$76.45
price up icon 2.27%
medical_devices EW
$85.13
price up icon 1.24%
Cap:     |  Volume (24h):