- English (USA)
- English (UK)
- English (India)
- English (Canada)
- English (Australia)
- English (South Africa)
- English (Nigeria)
- Deutsch
- Español (España)
- Español (México)
- Français
- Italiano
- Nederlands
- Polski
- Português (Portugal)
- Português (Brasil)
- Русский
- Türkçe
- العربية
- Ελληνικά
- Svenska
- Suomi
- עברית
- 日本語
- 한국어
- 简体中文
- 繁體中文
- Bahasa Indonesia
- Bahasa Melayu
- ไทย
- Tiếng Việt
- हिंदी
Quantum-Si Inc (QSI)
Quantum-Si Inc stock price live, this page displays NASDAQ QSI stock exchange data. View the QSI premarket stock price ahead of the market session or assess the after hours quote. Monitor the latest movements within the Quantum-Si Inc real time stock price chart below.
What Is the Quantum-Si Inc Stock Price Today?
The Quantum-Si Inc stock price today is 1.150.
What Is the Stock Symbol for Quantum-Si Inc?
The stock symbol for Quantum-Si Inc is "QSI."
What Stock Exchange Does Quantum-Si Inc Trade On?
Quantum-Si Inc is listed and trades on the NASDAQ stock exchange.
Is Quantum-Si Inc a Good Stock to Buy?
Determining whether Quantum-Si Inc—or any stock—is a good buy requires comprehensive analysis. To evaluate its potential, users can sign up to InvestingPro, where they can assess stock price fair value and other essential metrics.
You can find more details by visiting the additional pages to view historical data, charts, latest news, analysis or visit the forum to view opinions on the QSI quote. (ISIN: US74765K1051)
What Is the Quantum-Si Inc Stock Price Today?
The Quantum-Si Inc stock price today is 1.150.
What Is the Stock Symbol for Quantum-Si Inc?
The stock symbol for Quantum-Si Inc is "QSI."
What Stock Exchange Does Quantum-Si Inc Trade On?
Quantum-Si Inc is listed and trades on the NASDAQ stock exchange.
Is Quantum-Si Inc a Good Stock to Buy?
Determining whether Quantum-Si Inc—or any stock—is a good buy requires comprehensive analysis. To evaluate its potential, users can sign up to InvestingPro, where they can assess stock price fair value and other essential metrics.
You can find more details by visiting the additional pages to view historical data, charts, latest news, analysis or visit the forum to view opinions on the QSI quote. (ISIN: US74765K1051)
Fair Value
An estimate of a stock's true price based on valuation models like discounted cash flow, peer valuation multiples, and dividend discount models.
Day's Range
1.140
1.230
52 wk Range
0.690
1.810
QSI is not included in our AI-picked strategies. See which stocks are.
Fair Value
An estimate of a stock's true price based on valuation models like discounted cash flow, peer valuation multiples, and dividend discount models.
Day's Range
1.1401.230
52 wk Range
0.6901.810
Key Statistics
Edit
Prev. Close
Open
Volume
Average Volume (3m)
1-Year Change
Book Value / Share
Fair Value
UnlockFair Value Upside
UnlockMarket Cap
Shares Outstanding
Revenue
Net Income
EPS
EPS Growth Forecast
UnlockNext Earnings Date
Dividends Payment Streak
UnlockP/E Ratio
Return on Assets
Return on Equity
Gross Profit Margin
Price/Book
EBITDA
EV/EBITDA
Beta
Prev. Close
Open
Volume
Average Volume (3m)
1-Year Change
Book Value / Share
Fair Value
UnlockFair Value Upside
UnlockMarket Cap
Shares Outstanding
Revenue
Net Income
EPS
EPS Growth Forecast
UnlockNext Earnings Date
Dividends Payment Streak
UnlockP/E Ratio
Return on Assets
Return on Equity
Gross Profit Margin
Price/Book
EBITDA
EV/EBITDA
Beta
QSI Scorecard
Company’s Health
Assesses a company's financial position by analyzing its market value, financial ratios, industry benchmarks, and competitors.
UnlockFair Value
An estimate of a stock's true price based on valuation models like discounted cash flow, peer valuation multiples, and dividend discount models.
Unlock PriceTechnical Analysis
Strong Sell
Price Target
2.283
Upside
+98.55%
Members' Sentiments
Bearish
Bullish
ProTips
Tips that distill complex financial data into concise, actionable investment insights.
Quickly burning through cash
Technical Analysis
Summary
Strong Sell
Sell
Neutral
Buy
Strong Buy
Strong Sell
Technical Indicators
Strong Sell
Moving Averages
Strong Sell
Analyst Ratings
2 Buy
1 Hold
0 Sell
Ratings:
3 analysts
Overall Consensus
Buy
Analysts 12-Month Price Target:
Average 2.283
(+98.55% Upside)
Quantum-Si Inc Earnings Call Summary for Q2/2026
- Q2 revenue of $344,000 beat forecast of $233,800 but fell 41.8% year-over-year; stock dropped 5.66% on Proteus platform delay to Q2 2027.
- Quantum-Si postponed next-gen Proteus launch six months to Q2 2027, citing need for additional design cycle to improve manufacturing consistency.
- Company announced 20% workforce reduction targeting $12M annual savings; maintains $169.9M cash position expected to fund operations through Q4 2028.
- Full-year 2026 guidance unchanged: ~$1M revenue, ≤$98M adjusted operating expenses, ≤$93M total cash usage despite commercial headwinds.
- Management expects to demonstrate all 20 amino acids by end-2026; Proteus may launch with 19-20 amino acids as early access shifts to early 2027.
Last Updated: 08/14/2026, 05:48 AM
Read Full TranscriptEarnings
Latest Release
Nov 05, 2026
EPS / Forecast
-0.10 / -0.12
Revenue / Forecast
210K / 280K
Compare QSI to Peers and Sector
Metrics to compare | QSI | Sector Sector - Average of metrics from a broad group of related Healthcare sector companies | Relationship RelationshipQSIPeersSector | |
|---|---|---|---|---|
P/E Ratio | −3.0x | −8.6x | −0.2x | |
PEG Ratio | −0.07 | −0.47 | 0.00 | |
Price/Book | 1.6x | 5.6x | 2.6x | |
Price / LTM Sales | 199.0x | 5.4x | 2.8x | |
Upside (Analyst Target) | 98.6% | 17.1% | 65.0% | |
Fair Value Upside | Unlock | −7.9% | 9.6% | Unlock |
Quantum-Si incorporated, a life sciences company, develops proprietary, universal, and single-molecule detection platform applied to proteomics to enable next-gen protein sequencing (NGPS). The company offers Platinum and Platinum Pro NGPS instruments for single-molecule, amino acid level resolution, and automated data analysis; library preparation kits to prepare a customer’s protein sample for sequencing; and sequencing kits, which contain the reagents and consumables used to perform NGPS. It also provides Platinum analysis software, a cloud-based solution that automates data analysis workflows and visualizes the sequencing results. The company was founded in 2013 and is headquartered in Branford, Connecticut.
Ownership
Ownership Overview
Top Holders
People Also Watch
FAQ
What Is the Quantum-Si (QSI) Stock Price Today?
The Quantum-Si stock price today is 1.150 USD.
What Stock Exchange Does Quantum-Si Trade On?
Quantum-Si is listed and trades on the Nasdaq Stock Exchange.
What Is the Stock Symbol for Quantum-Si?
The stock symbol for Quantum-Si is "QSI."
What Is the Quantum-Si Market Cap?
As of today, Quantum-Si market cap is 267.040M USD.
What Is Quantum-Si's Earnings Per Share (TTM)?
The Quantum-Si EPS (TTM) is -0.39.
When Is the Next Quantum-Si Earnings Date?
Quantum-Si will release its next earnings report on Mar 08, 2027.
From a Technical Analysis Perspective, Is QSI a Buy or Sell?
Based on moving averages and other technical indicators, the daily buy/sell signal is Strong Sell.
How Many Times Has Quantum-Si Stock Split?
Quantum-Si has split 0 times.
How Many Employees Does Quantum-Si Have?
Quantum-Si has 145 employees.
What is the current trading status of Quantum-Si (QSI)?
As of Nov 14, 2026, Quantum-Si (QSI) is trading at a price of 1.150 USD, with a previous close of 1.220 USD. The stock has fluctuated within a day range of 1.140 USD to 1.230 USD, while its 52-week range spans from 0.690 USD to 1.810 USD.
What Is Quantum-Si (QSI) Price Target According to Analysts?
The average 12-month price target for Quantum-Si is 2.283 USD, with a high estimate of 3.95 USD and a low estimate of 1 USD. 2 analysts recommend buying the stock, while 0 suggest selling, leading to an overall rating of Buy. The stock has an +98.55% Upside potential.
What Is the QSI Premarket Price?
QSI's last pre-market stock price is 1.240 USD. The pre-market share volume is 56,920.000, and the stock has decreased by 0.020, or 1.640%.
What Is the QSI After Hours Price?
QSI's last after hours stock price is 1.175 USD, the stock has decreased by 0.025, or 2.210%.
Risk Disclosure: Trading in financial instruments and/or cryptocurrencies involves high risks including the risk of losing some, or all, of your investment amount, and may not be suitable for all investors. Prices of cryptocurrencies are extremely volatile and may be affected by external factors such as financial, regulatory or political events. Trading on margin increases the financial risks.
Before deciding to trade in financial instrument or cryptocurrencies you should be fully informed of the risks and costs associated with trading the financial markets, carefully consider your investment objectives, level of experience, and risk appetite, and seek professional advice where needed.
Fusion Media would like to remind you that the data contained in this website is not necessarily real-time nor accurate. The data and prices on the website are not necessarily provided by any market or exchange, but may be provided by market makers, and so prices may not be accurate and may differ from the actual price at any given market, meaning prices are indicative and not appropriate for trading purposes. Fusion Media and any provider of the data contained in this website will not accept liability for any loss or damage as a result of your trading, or your reliance on the information contained within this website.
It is prohibited to use, store, reproduce, display, modify, transmit or distribute the data contained in this website without the explicit prior written permission of Fusion Media and/or the data provider. All intellectual property rights are reserved by the providers and/or the exchange providing the data contained in this website.
Fusion Media may be compensated by the advertisers that appear on the website, based on your interaction with the advertisements or advertisers.
Before deciding to trade in financial instrument or cryptocurrencies you should be fully informed of the risks and costs associated with trading the financial markets, carefully consider your investment objectives, level of experience, and risk appetite, and seek professional advice where needed.
Fusion Media would like to remind you that the data contained in this website is not necessarily real-time nor accurate. The data and prices on the website are not necessarily provided by any market or exchange, but may be provided by market makers, and so prices may not be accurate and may differ from the actual price at any given market, meaning prices are indicative and not appropriate for trading purposes. Fusion Media and any provider of the data contained in this website will not accept liability for any loss or damage as a result of your trading, or your reliance on the information contained within this website.
It is prohibited to use, store, reproduce, display, modify, transmit or distribute the data contained in this website without the explicit prior written permission of Fusion Media and/or the data provider. All intellectual property rights are reserved by the providers and/or the exchange providing the data contained in this website.
Fusion Media may be compensated by the advertisers that appear on the website, based on your interaction with the advertisements or advertisers.
© 2007-2026 - Fusion Media Limited. All Rights Reserved.