1.95

4.88% -0.10

After Hours: 1.95

Quantum Si Incorporated (QSI)

Overview News Price History Option Chain Financials Discussions Forecast

Quantum Si Incorporated stock is traded at $1.95, with a volume of 12.36M. It is down -4.88% in the last 24 hours and up +1.56% 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.

Previous Close:

$2.05

Open:

$2.055

24h Volume:

12.36M

Relative Volume:

1.70

Market Cap:

$311.95M

Revenue:

Net Income/Loss:

$-95.96M

P/E Ratio:

-2.8676

EPS:

-0.68

Net Cash Flow:

$-99.31M

1W Performance:

+12.72%

1M Performance:

+1.56%

6M Performance:

-45.83%

1Y Performance:

+107.45%

1-Day Range:

$1.87

$2.06

1-Week Range:

$1.55

$2.14

52-Week Range:

$0.6121

$5.77

Quantum Si Incorporated Stock (QSI) Company Profile

Name

Quantum Si Incorporated

Sector

Healthcare (1174)

Industry

Medical Devices (149)

Phone

(203) 458-7100

Address

29 BUSINESS PARK DRIVE, BRANFORD

Employee

143

Twitter

Next Earnings Date

2025-03-03

Latest SEC Filings

QSI's Discussions on Twitter

Compare QSI with other stocks

Stocks	Price	Market Cap	Revenue	Net Income	Cash Flow	EPS
QSI Quantum Si Incorporated	1.95	311.95M	0	-95.96M	-99.31M	-0.68
ABT Abbott Laboratories	134.38	233.36B	42.34B	13.50B	6.66B	7.71
BSX Boston Scientific Corp	106.53	147.06B	17.55B	2.03B	2.72B	1.37
SYK Stryker Corp	393.55	145.64B	23.22B	2.86B	3.58B	7.40
MDT Medtronic Plc	86.02	112.76B	33.54B	4.66B	5.19B	3.62
EW Edwards Lifesciences Corp	78.21	44.46B	5.54B	4.18B	623.10M	7.00

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

Jun 17, 2025

Quantum-Si to showcase protein sequencing tech at genomics festival - Investing.com

Jun 17, 2025

Press Release Service: Quantum-Si Customer to Showcase Protein Barcoding for Nucleic Acid–LNP Therapeutic Development at Festival of Genomics Boston - CRISPR Medicine News

Jun 17, 2025

Quantum-Si to showcase protein sequencing tech at genomics festival By Investing.com - Investing.com Nigeria

Jun 17, 2025

Quantum-Si Customer to Showcase Protein Barcoding for Nucleic Acid–LNP Therapeutic Development at Festival of Genomics Boston - Yahoo Finance

Jun 17, 2025

Jun 16, 2025

Quantum-Si announces inducement grants - Medical Buyer

Jun 16, 2025

Quantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4)June 13, 2025 - BioSpace

Jun 16, 2025

Jun 10, 2025

Quantum-Si’s Single-Molecule Tech Enables Precise, Multiplexed Measurement of Nanobody Binding in a Single Assay - BioSpace

Jun 10, 2025

152,683 Shares in Quantum-Si incorporated (NASDAQ:QSI) Purchased by Two Sigma Investments LP - Defense World

Jun 10, 2025

Jun 06, 2025

Quantum-Si Warrants: Why A Sevenfold Rally Seems Unlikely Before 2026 (NASDAQ:QSIAW) - Seeking Alpha

Jun 06, 2025

Jun 04, 2025

ProShare Advisors LLC Buys 9,280 Shares of Quantum-Si incorporated (NASDAQ:QSI) - Defense World

Jun 04, 2025

BNP Paribas Financial Markets Takes $51,000 Position in Quantum-Si incorporated (NASDAQ:QSI) - Defense World

Jun 04, 2025

Jun 01, 2025

Quantum-Si incorporated (NASDAQ:QSI) Position Increased by Northern Trust Corp - Defense World

May 26, 2025

May 23, 2025

Top 2 Health Care Stocks That May Implode In Q2 - Benzinga

May 23, 2025

May 22, 2025

Quantum-Si: Sell On Weak Prospects And Risk Of Further Dilution - Seeking Alpha

May 22, 2025

FY2025 EPS Estimates for Quantum-Si Raised by HC Wainwright - Defense World

May 22, 2025

May 21, 2025

HC Wainwright Reaffirms “Buy” Rating for Quantum-Si (NASDAQ:QSI) - Defense World

May 21, 2025

May 20, 2025

Balyasny Asset Management L.P. Makes New Investment in Quantum-Si incorporated (NASDAQ:QSI) - Defense World

May 20, 2025

May 19, 2025

The Manufacturers Life Insurance Company Purchases Shares of 34,850 Quantum-Si incorporated (NASDAQ:QSI) - Defense World

May 19, 2025

H.C. Wainwright Adjusts Quantum-Si (QSI) Price Target, Maintains Buy Rating | QSI Stock News - GuruFocus

May 19, 2025

May 18, 2025

Quantum-Si outlines $103M operating expense target for 2025 while accelerating international expansion - MSN

May 18, 2025

Mercer Global Advisors Inc. ADV Buys Shares of 30,959 Quantum-Si incorporated (NASDAQ:QSI) - Defense World

May 18, 2025

May 17, 2025

While institutions invested in Quantum-Si incorporated (NASDAQ:QSI) benefited from last week's 17% gain, retail investors stood to gain the most - simplywall.st

May 17, 2025

May 16, 2025

Quantum-Si’s Earnings Call: Growth Amid Challenges - TipRanks

May 16, 2025

Transcript : Quantum-Si incorporatedShareholder/Analyst Call - marketscreener.com

May 16, 2025

Price T Rowe Associates Inc. MD Acquires 11,787 Shares of Quantum-Si incorporated (NASDAQ:QSI) - Defense World

May 16, 2025

Quantum-Si Reports Strong Growth in Q1 2025 - TipRanks

May 16, 2025

May 15, 2025

Transcript : Quantum-Si incorporated, Q1 2025 Earnings Call, May 15, 2025 - marketscreener.com

May 15, 2025

Quantum-Si Q1 2025 Earnings Call Transcript - MarketBeat

May 15, 2025

Quantum-Si Reports First Quarter 2025 Financial Results - BioSpace

May 15, 2025