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1.12
14.50%
-0.19
Quantum Si Incorporated stock is traded at $1.12, with a volume of 7.59M.
It is down -14.50% in the last 24 hours and up +53.40% 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.
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Previous Close:
$1.31
Open:
$1.33
24h Volume:
7.59M
Relative Volume:
0.63
Market Cap:
$245.15M
Revenue:
$1.85M
Net Income/Loss:
$-103.82M
P/E Ratio:
-2.1871
EPS:
-0.5121
Net Cash Flow:
$-95.69M
1W Performance:
-26.80%
1M Performance:
+53.40%
6M Performance:
+7.69%
1Y Performance:
-55.91%
1-Day Range:
$1.10
$1.33
1-Week Range:
$1.10
$1.475
52-Week Range:
$0.69
$3.10
Quantum Si Incorporated Stock (QSI) Company Profile
Name
Quantum Si Incorporated
Sector
Industry
Phone
(203) 458-7100
Address
29 BUSINESS PARK DRIVE, BRANFORD
Compare QSI vs ABT, MDT, SYK, BSX, EW
| Stocks | Price | Market Cap | Revenue | Net Income | Cash Flow | EPS |
|---|---|---|---|---|---|---|
QSI
Quantum Si Incorporated
|
1.12 | 245.15M | 1.85M | -103.82M | -95.69M | -0.5121 |
ABT
Abbott Laboratories
|
104.89 | 181.50B | 46.59B | 5.41B | 7.38B | 3.0938 |
MDT
Medtronic Plc
|
94.75 | 121.20B | 36.36B | 4.84B | 5.43B | 3.7261 |
SYK
Stryker Corp
|
294.66 | 113.02B | 25.27B | 3.34B | 4.57B | 8.6334 |
BSX
Boston Scientific Corp
|
44.39 | 64.33B | 20.62B | 3.56B | 3.48B | 2.3847 |
EW
Edwards Lifesciences Corp
|
86.60 | 49.92B | 6.30B | 1.07B | 1.09B | 1.8406 |
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
Quantum-Si to Provide a Business Update and Report Third Quarter 2026 Financial Results on November 5, 2026 - GlobeNewswire Inc.
Quantum-Si (NasdaqGM:QSI) Stock Forecast & Analyst Predictions - simplywall.st
Quantum-Si Presents Interim Proteus™ Data at World HUPO 2026 Demonstrating a Significant Step Change in Performance Compared to Platinum® Pro - GlobeNewswire Inc.
Form 4 QuantumSi Inc For: 23 September By Investing.com - Investing.com Canada
Quantum-Si CEO Jeffrey Hawkins sells $22,610 in stock - Investing.com
Quantum-Si CFO Jeffry Keyes sells $5,805 in company stock - Investing.com
Quantum-Si CEO Jeffrey Hawkins sells $22,610 in stock By Investing.com - Investing.com UK
Quantum-Si GC LaPointe sells $10,994 in shares for tax withholding - Investing.com
Form 144 Quantum-Si Inc For: 23 September By Investing.com - Investing.com India
To cover taxes on vested stock, Quantum-Si (QSI) officer Jeffrey Alan Hawkins plans to sell 29,852 shares. - Stock Titan
A proposed tax sale: Quantum-Si (QSI) officer Christian LaPointe lists 14,516 shares. - Stock Titan
Quantum-Si Announces Detection of 18 Amino Acids Using a Developmental Sequencing Kit on Proteus™ - The Manila Times
Quantum-Si (NASDAQ:QSI) Upgraded by Wall Street Zen to Hold Rating - marketbeat.com
Quantum-Si (NASDAQ:QSI) Shares Down 1.3%What's Next? - marketbeat.com
Quantum-Si expands Proteus platform roadshow across US, Europe By Investing.com - Investing.com Nigeria
Quantum-Si Flat on Kicking off Roadshow - Baystreet.ca
Quantum-Si Expands Proteus Roadshow with Additional U.S. and European Cities - Investing News Network
Quantum-Si expands Proteus platform roadshow across US, Europe - investing.com
Quantum-Si expands Proteus platform roadshow across US, Europe By Investing.com - Investing.com Canada
Quantum-Si expands Proteus platform roadshow across US, Europe By Investing.com - Investing.com UK
A protein-reading roadshow adds stops ahead of Proteus’ commercial launch - Stock Titan
QSI stock extends slide as Quantum-Si focuses on cash and diagnostics platform - ad-hoc-news.de
Jonathan M. Rothberg’s Quantum-Si (NASDAQ: QSI) Estate Plan Allows Sale of Up to 8.95M Class A Shares by 2028 - Kalkine Media
QSI Q2 2026 Earnings: Better-Than-Expected Loss of $0.11 Per Share, but Revenue Details Remain UnclearFull Year Guidance - vinanet.vn
Quantum-Si (NASDAQ: QSI) founder holds all Class B as trusts prep stock sales - Stock Titan
Operating cash flow per share of Quantum-Si Incorporated – NASDAQ:QSI - TradingView
Quantum-Si (QSI) Q2 2026 Earnings Call Transcript - The Globe and Mail
Quantum-Si to Participate in the H.C. Wainwright 28th Annual Global Investment Conference - Investing News Network
Quantum-Si to Participate in the H.C. Wainwright 28th Annual Global Investment Conference - The Manila Times
FY2026 EPS Estimates for Quantum-Si Lifted by HC Wainwright - MarketBeat
Quantum-Si to Participate in the H.C. Wainwright 28th Annual Global Investment Conference - Barchart.com
Quantum-Si (QSI) Q2 2026 Earnings: Narrower-than-Expected Loss Fails to Stem Share DeclineMargin Improvement Report - vinanet.vn
Quantum-Si (QSI) Q2 2026 Earnings: Narrower-than-Expected Loss Fails to Stem Share DeclinePost-Announcement Reaction - dars.gov.et
Quantum-Si (QSI) Slides 6.35% to $0.74, Pressuring Key $0.70 Support LevelOverbought Signal Alerts - vinanet.vn
Quantum-Si (QSI) Slides 6.35% to $0.74, Pressuring Key $0.70 Support LevelUp Down Ratio - siam.in
Quantum-Si incorporated Q2 2026 Earnings Call Summary - Yahoo Finance
Quantum-Si Reports Second Quarter 2026 Financial Results and Provides Proteus™ Development Update - The Manila Times
Quantum-Si Q2 Earnings Call Highlights - MarketBeat
Quantum-Si Q2 Earnings Call Highlights - TradingView
Quantum-Si Incorporated (QSI) Reports Q2 Loss, Tops Revenue Estimates - Yahoo Finance
QSI: Proteus launch delayed to Q2 2027, with cost cuts and strong cash position supporting revised plan - TradingView
Quantum-Si Q2 EPS $(0.11) beats estimate as revenue hits $344k - scanx.trade
QSI: Proteus launch delayed to Q2 2027; cost cuts extend cash runway and support long-term growth - TradingView
Quantum-Si (NASDAQ:QSI) Announces Quarterly Earnings Results - MarketBeat
Quantum-Si Reports Second Quarter 2026 Financial Results and Provides Proteus Development Update - Investing News Network
Quantum-Si incorporated Reports Earnings Results for the Second Quarter and Six Months Ended June 30, 2026 - marketscreener.com
Qantum-Si Incorporated Reiterates Earnings Guidance for the Full Year 2026 - marketscreener.com
Quantum-Si Reports Second Quarter 2026 Financial Results and Provides Proteus™ Development Update - marketscreener.com
Stock Traders Purchase Large Volume of Call Options on Quantum-Si (NASDAQ:QSI) - MarketBeat
Quantum-Si Inc (QSI) Q2 2026 Earnings Report Preview: What To Expect - Yahoo Finance
Quantum Si Incorporated Stock (QSI) Financials Data
Revenue
Net Income
Cash Flow
EPS
Quantum Si Incorporated Stock (QSI) Insider Trading
| Insider Trading | Relationship | Date | Transaction | Cost | #Shares | Value ($) | #Shares Total |
|---|---|---|---|---|---|---|---|
| LaPointe Christian | GC & Corp. Secretary |
Sep 22 '26 |
Sale |
0.76 |
4,721 |
3,592 |
1,167,913 |
| Hawkins Jeffrey Alan | President & CEO |
Sep 22 '26 |
Sale |
0.76 |
9,709 |
7,387 |
3,639,950 |
| Keyes Jeffry R. | Chief Financial Officer |
Sep 22 '26 |
Sale |
0.76 |
2,493 |
1,897 |
1,716,684 |
| LaPointe Christian | GC & Corp. Secretary |
Sep 21 '26 |
Sale |
0.76 |
9,795 |
7,403 |
1,172,634 |
| Keyes Jeffry R. | Chief Financial Officer |
Sep 21 '26 |
Sale |
0.76 |
5,172 |
3,909 |
1,719,177 |
| LaPointe Christian | GC & Corp. Secretary |
Jun 23 '26 |
Sale |
0.90 |
7,794 |
7,007 |
1,182,429 |
| Keyes Jeffry R. | Chief Financial Officer |
Jun 23 '26 |
Sale |
0.90 |
4,117 |
3,701 |
1,724,349 |
| Vieceli John S. | Chief Product Officer |
Jun 23 '26 |
Sale |
0.90 |
15,112 |
13,586 |
1,140,434 |
| Hawkins Jeffrey Alan | President & CEO |
Jun 23 '26 |
Sale |
0.90 |
11,311 |
10,169 |
3,669,802 |
| Hawkins Jeffrey Alan | President & CEO |
Jun 22 '26 |
Sale |
0.96 |
11,310 |
10,828 |
3,681,113 |
4.47%
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