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CompanyCurrent Price50-Day Moving Average52-Week RangeMarket CapBetaAvg. VolumeToday's Volume
Quantum-Si Incorporated stock logo
QSI
Quantum-Si
$0.78
-2.9%		$0.82
$0.69
▼
$3.10
$170.73M3.243.14 million shs2.41 million shs
7 Stocks That Will Be Magnificent in 2026 Cover
7 Stocks That Will Be Magnificent in 2026

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Compare Price Performance

Company1-Day Performance7-Day Performance30-Day Performance90-Day Performance1-Year Performance
Quantum-Si Incorporated stock logo
QSI
Quantum-Si
0.00%-6.59%+8.33%-34.45%-32.76%
CompanyCurrent Price50-Day Moving Average52-Week RangeMarket CapBetaAvg. VolumeToday's Volume
Quantum-Si Incorporated stock logo
QSI
Quantum-Si
$0.78
-2.9%		$0.82
$0.69
▼
$3.10
$170.73M3.243.14 million shs2.41 million shs
7 Stocks That Will Be Magnificent in 2026 Cover
7 Stocks That Will Be Magnificent in 2026

Discover the next wave of investment opportunities with our report, 7 Stocks That Will Be Magnificent in 2026. Explore companies poised to replicate the growth, innovation, and value creation of the tech giants dominating today's markets.

Get This Free Report

Compare Price Performance

Company1-Day Performance7-Day Performance30-Day Performance90-Day Performance1-Year Performance
Quantum-Si Incorporated stock logo
QSI
Quantum-Si
0.00%-6.59%+8.33%-34.45%-32.76%
CompanyConsensus Rating ScoreConsensus RatingConsensus Price Target% Upside from Current Price
Quantum-Si Incorporated stock logo
QSI
Quantum-Si
2.00
Hold$1.0028.21% Upside

Current Analyst Ratings Breakdown

Latest QSI Analyst Ratings

DateCompanyBrokerageActionRatingPrice TargetDetails
8/25/2026
Quantum-Si Incorporated stock logo
QSI
Quantum-Si
Weiss Ratings logo
Weiss Ratings
Subscribe to MarketBeat All Access for the firm's recommendation accuracy rating
UpgradeSell (E+) ➝ Sell (D-)
8/14/2026
Quantum-Si Incorporated stock logo
QSI
Quantum-Si
Alliance Global Partners logo
Alliance Global Partners
Subscribe to MarketBeat All Access for the firm's recommendation accuracy rating
Reiterated RatingBuy
8/11/2026
Quantum-Si Incorporated stock logo
QSI
Quantum-Si
Weiss Ratings logo
Weiss Ratings
Subscribe to MarketBeat All Access for the firm's recommendation accuracy rating
DowngradeSell (D-) ➝ Sell (E+)
7/21/2026
Quantum-Si Incorporated stock logo
QSI
Quantum-Si
Weiss Ratings logo
Weiss Ratings
Subscribe to MarketBeat All Access for the firm's recommendation accuracy rating
UpgradeSell (E+) ➝ Sell (D-)
7/8/2026
Quantum-Si Incorporated stock logo
QSI
Quantum-Si
Weiss Ratings logo
Weiss Ratings
Subscribe to MarketBeat All Access for the firm's recommendation accuracy rating
DowngradeSell (D-) ➝ Sell (E+)
6/24/2026
Quantum-Si Incorporated stock logo
QSI
Quantum-Si
Weiss Ratings logo
Weiss Ratings
Subscribe to MarketBeat All Access for the firm's recommendation accuracy rating
Reiterated RatingSell (D-)
(Data available from 8/30/2023 forward. View 10+ years of historical ratings with our analyst ratings screener.)
CompanyAnnual RevenuePrice/SalesCashflowPrice/CashBook ValuePrice/Book
Quantum-Si Incorporated stock logo
QSI
Quantum-Si
$2.44M69.97N/AN/A$0.82 per share0.95
CompanyNet IncomeEPSTrailing P/E RatioForward P/E RatioP/E GrowthNet MarginsReturn on Equity (ROE)Return on Assets (ROA)Next Earnings Date
Quantum-Si Incorporated stock logo
QSI
Quantum-Si
-$101.34M-$0.46N/AN/AN/A-6,138.26%-47.12%-43.18%11/4/2026 (Estimated)

Latest QSI Earnings

DateQuarterCompanyConsensus EstimateReported EPSBeat/MissGap EPSRevenue EstimateActual RevenueDetails
8/13/2026Q2 2026
Quantum-Si Incorporated stock logo
QSI
Quantum-Si
-$0.1133-$0.11+$0.0033-$0.11$0.30 million$0.34 million
CompanyAnnual PayoutDividend Yield5-Year Annualized Dividend GrowthPayout RatioYears of Consecutive Growth
Quantum-Si Incorporated stock logo
QSI
Quantum-Si
N/AN/AN/AN/AN/A
CompanyDebt-to-Equity RatioCurrent RatioQuick Ratio
Quantum-Si Incorporated stock logo
QSI
Quantum-Si
N/A
9.97
9.80

Institutional Ownership

CompanyInstitutional Ownership
Quantum-Si Incorporated stock logo
QSI
Quantum-Si
39.90%

Insider Ownership

CompanyInsider Ownership
Quantum-Si Incorporated stock logo
QSI
Quantum-Si
22.04%
CompanyEmployeesShares OutstandingFree FloatOptionable
Quantum-Si Incorporated stock logo
QSI
Quantum-Si
150218.88 million170.64 millionOptionable

Recent News About These Companies

Quantum‑Si Earnings Call: Proteus Delay, Runway Extended
August 22, 2026  |  theglobeandmail.comhttps://www.theglobeandmail.com/investing/markets/stocks/QSI/pressreleases/3961199/quantumsi-earnings-call-proteus-delay-runway-extended/
Quantum-Si FY2026 EPS Estimate Increased by HC Wainwright
August 20, 2026  |  americanbankingnews.comhttps://www.americanbankingnews.com/?p=30971301
Quantum-Si to Participate in the H.C. Wainwright 28th Annual Global Investment Conference
August 18, 2026  |  globenewswire.comhttps://www.globenewswire.com/news-release/2026/08/18/3346768/0/en/quantum-si-to-participate-in-the-h-c-wainwright-28th-annual-global-investment-conference.html
FY2026 EPS Estimates for Quantum-Si Lifted by HC Wainwright
August 18, 2026  |  marketbeat.comhttps://www.marketbeat.com/instant-alerts/fy2026-eps-estimates-for-quantum-si-lifted-by-hc-wainwright-2026-08-18/
Quantum-Si incorporated (QSI) Q2 2026 Earnings Call Transcript
August 14, 2026  |  seekingalpha.comhttps://seekingalpha.com/article/4936515-quantum-si-incorporated-qsi-q2-2026-earnings-call-transcript
Quantum-Si Q2 Earnings Call Highlights
August 13, 2026  |  marketbeat.comhttps://www.marketbeat.com/instant-alerts/quantum-si-q2-earnings-call-highlights-2026-08-13/
Quantum-Si Incorporated (QSI) Reports Q2 Loss, Tops Revenue Estimates
August 13, 2026  |  zacks.comhttps://www.zacks.com/stock/news/2974677/quantum-si-incorporated-qsi-reports-q2-loss-tops-revenue-estimates?cid=cs-stocknewsapi-ft-fundamental_analysis|yseop_template_4-2974677
Quantum-Si (NASDAQ:QSI) Announces Quarterly Earnings Results
August 13, 2026  |  marketbeat.comhttps://www.marketbeat.com/instant-alerts/quantum-si-nasdaqqsi-announces-quarterly-earnings-results-2026-08-13/
Quantum-Si Reports Second Quarter 2026 Financial Results and Provides Proteus™ Development Update
August 13, 2026  |  globenewswire.comhttps://www.globenewswire.com/news-release/2026/08/13/3344917/0/en/quantum-si-reports-second-quarter-2026-financial-results-and-provides-proteus-development-update.html
Stock Traders Purchase Large Volume of Call Options on Quantum-Si (NASDAQ:QSI)
August 13, 2026  |  marketbeat.comhttps://www.marketbeat.com/instant-alerts/stock-traders-purchase-large-volume-of-call-options-on-quantum-si-nasdaqqsi-2026-08-13/
Quantum-Si Q2 2026 earnings preview
August 12, 2026  |  msn.comhttps://www.msn.com/en-us/money/topstocks/quantum-si-q2-2026-earnings-preview/ar-AA29XYlc
Quantum-Si to Report Second Quarter 2026 Financial Results on August 13, 2026
July 27, 2026  |  globenewswire.comhttps://www.globenewswire.com/news-release/2026/07/27/3333857/0/en/quantum-si-to-report-second-quarter-2026-financial-results-on-august-13-2026.html
Why Quantum-Si incorporated’s (QSI) Stock Is Up 5.02%
July 1, 2026  |  aaii.comA
Quantum-Si (NASDAQ:QSI) CEO Jeffrey Alan Hawkins Sells 11,311 Shares
June 25, 2026  |  insidertrades.comhttps://www.insidertrades.com/alerts/nasdaq-qsi-insider-buying-and-selling-2026-06-25/
Quantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4)
June 16, 2026  |  businesswire.comhttps://www.businesswire.com/news/home/20260615141588/en/quantum-si-announces-inducement-grants-under-nasdaq-listing-rule-5635-c-4/
Quantum-Si and Cell Signaling Technology Partner to Advance Post-Translational Modification Analysis on Proteus™
June 10, 2026  |  rutlandherald.comR
Why Quantum-Si incorporated’s (QSI) Stock Is Down 7.81%
June 8, 2026  |  aaii.comA
Quantum-Si Announces the Expansion of the Proteus™ Roadshow
June 3, 2026  |  finance.yahoo.comhttps://finance.yahoo.com/sectors/healthcare/articles/quantum-si-announces-expansion-proteus-120000670.html
Quantum-Si Announces the Expansion of the Proteus™ Roadshow
June 3, 2026  |  businesswire.comhttps://www.businesswire.com/news/home/20260602203644/en/quantum-si-announces-the-expansion-of-the-proteus%e2%84%a2-roadshow/
Is Quantum-Si (NASDAQ:QSI) In A Good Position To Invest In Growth?
June 1, 2026  |  finance.yahoo.comhttps://finance.yahoo.com/markets/stocks/articles/quantum-si-nasdaq-qsi-good-121705721.html
Quantum-Si incorporated (QSI) Shareholder/Analyst Call Prepared Remarks Transcript
May 15, 2026  |  seekingalpha.comhttps://seekingalpha.com/article/4905372-quantum-si-incorporated-qsi-shareholder-analyst-call-prepared-remarks-transcript

New MarketBeat Followers Over Time

Media Sentiment Over Time

Quantum-Si stock logo

Quantum-Si NASDAQ:QSI

$0.78 -0.02 (-2.88%)
As of 08/28/2026 04:00 PM Eastern

Quantum-Si incorporated, a life sciences company, engages in the development of single-molecule detection platform to enable Next Generation Protein Sequencing (NGPS). The company's platform is comprised of the Platinum NGPS instrument; the Platinum Analysis Software service; and reagent kits and semiconductor chips for use with its instruments. It is used in protein identification, protein variants, antibody characterization, biomarker identification, and post translational modification analysis applications. The company was founded in 2013 is headquartered in Branford, Connecticut.

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