1.05

24.88% 0.2092

After Hours: 1.04 -0.01 -0.95%

Quantum Si Incorporated (QSI)

Overview News Price History Option Chain Financials Discussions Forecast

Quantum Si Incorporated stock is traded at $1.05, with a volume of 17.36M. It is up +24.88% in the last 24 hours and up +10.57% 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.

Previous Close:

$0.8408

Open:

$0.9

24h Volume:

17.36M

Relative Volume:

4.33

Market Cap:

$227.19M

Revenue:

$2.44M

Net Income/Loss:

$-101.34M

P/E Ratio:

-2.0298

EPS:

-0.5173

Net Cash Flow:

$-97.23M

1W Performance:

+39.91%

1M Performance:

+10.57%

6M Performance:

-60.08%

1Y Performance:

-14.63%

1-Day Range:

$0.8987

$1.06

1-Week Range:

$0.7221

$1.06

52-Week Range:

$0.6912

$3.10

Quantum Si Incorporated Stock (QSI) Company Profile

Name

Quantum Si Incorporated

Sector

Healthcare (1112)

Industry

Medical Devices (143)

Phone

(203) 458-7100

Address

29 BUSINESS PARK DRIVE, BRANFORD

Employee

145

Twitter

Next Earnings Date

2025-03-03

Latest SEC Filings

QSI's Discussions on Twitter

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

Stocks	Price	Market Cap	Revenue	Net Income	Cash Flow	EPS
QSI Quantum Si Incorporated	1.05	181.92M	2.44M	-101.34M	-97.23M	-0.5173
ABT Abbott Laboratories	101.56	175.59B	44.33B	6.50B	7.40B	3.717
SYK Stryker Corp	341.24	132.47B	25.12B	3.25B	4.28B	8.3984
MDT Medtronic Plc	87.10	113.14B	35.48B	4.64B	5.41B	3.582
BSX Boston Scientific Corp	64.61	94.85B	20.08B	2.89B	3.66B	1.9391
EW Edwards Lifesciences Corp	78.20	45.09B	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

04:57 AM

Quantum-Si Announces Two Customer Posters to be Presented at the American Association of Cancer Research Annual Meeting - Investing News Network

04:57 AM

Apr 14, 2026

Quantum-Si announces new manuscript on bioRxiv - TipRanks

Apr 14, 2026

Quantum-Si Announces New Manuscript Demonstrating the Value of Single-molecule Protein Sequencing to Aid in Identifying New Cancer Treatment Strategies - The Joplin Globe

Apr 14, 2026

Apr 13, 2026

Quantum-Si announces inducement grants - Medical Buyer

Apr 13, 2026

Quantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4) - marketscreener.com

Apr 13, 2026

US Market Recap: What is the target price for Quantum Si incorporated Equity Warrant stockWeekly Profit Summary & Weekly Return Optimization Plans - baoquankhu1.vn

Apr 13, 2026

Quantum-Si Inc stock (US7491641091): Is its protein sequencing tech strong enough to unlock biotech - AD HOC NEWS

Apr 13, 2026

Growth Report: Can Quantum Si incorporated Equity Warrant reach all time highs this yearWeekly Trend Report & High Return Stock Watch Alerts - baoquankhu1.vn

Apr 13, 2026

Apr 12, 2026

Quantum-Si Incorporated (NASDAQ:QSI) Q4 2025 earnings call transcript - MSN

Apr 12, 2026

Apr 10, 2026

Quantum-Si announces inducement grants under Nasdaq Listing Rule 5635(c)(4) - marketscreener.com

Apr 10, 2026

Is Quantum Si incorporated a stock for growth or value investors2026 Movers & Daily Volume Surge Trade Alerts - baoquankhu1.vn

Apr 10, 2026

Apr 09, 2026

Bearish Setup: Is Quantum Si incorporated Equity Warrant stock a good pick for beginners2026 Momentum & Reliable Entry Point Alerts - baoquankhu1.vn

Apr 09, 2026

US Stocks Recap: Can Quantum Si incorporated benefit from deglobalization2026 Momentum & Real-Time Volume Spike Alerts - baoquankhu1.vn

Apr 09, 2026

Apr 08, 2026

Quantum-Si tests customer samples on Proteus prototype system By Investing.com - Investing.com Australia

Apr 08, 2026

Quantum-Si Inc stock: Proteus breakthrough draws investor eyes - AD HOC NEWS

Apr 08, 2026

Quantum-Si Incorporated Tests First Customer Samples on Proteus Prototype System - marketscreener.com

Apr 08, 2026

Quantum-Si Announces First Customer Samples Tested on the Proteus™ Prototype System - 01net

Apr 08, 2026

Quantum-Si tests customer samples on Proteus prototype system - Investing.com

Apr 08, 2026

Apr 07, 2026

Quantum-Si Announces the Start of the Proteus Roadshow - marketscreener.com

Apr 07, 2026

Apr 06, 2026

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

Apr 06, 2026

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

Apr 06, 2026

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

Apr 06, 2026

Apr 02, 2026