Cytek Biosciences, Inc. (CTKB) Stock

Cytek Biosciences, Inc. (CTKB) is a Technology stock trading at $4.66 (as of 2026-08-20), with a market capitalization of $605.07M. Figures are sourced from first-party U.S. SEC EDGAR filings and market data.

Cytek Biosciences provides cell analysis instruments, including full-spectrum fluorescence flow cytometers (Aurora and Northern Lights) and an Aurora cell sorter, along with consumables such as cFluor reagents and assay kits. It also offers automated sample-loading hardware and SpectroFlo software to support end-to-end workflows for research and clinical users analyzing single cells.

Understand Cytek Biosciences, Inc.: how it makes money

Cytek Biosciences sells cell analysis tools, including its spectrum flow cytometer systems (Aurora and Northern Lights) and Aurora cell sorter, and it also provides related reagents and kits and cloud-based cell analysis offerings that support an installed base.

Cytek’s profit engine links instrument adoption to ongoing monetization, because it tracks both an installed base of instruments and cloud user counts alongside product and service revenue categories.

Business quality (Weak): Clear product stack (spectrum flow cytometers, cell sorter, reagents/kits, and cloud usage metrics), but the latest quarter shows gross margin alongside a very weak operating margin, so operating expense control and translating installed base into durable recurring revenue matter most.

Bull case

  • Broad product platform for cell analysis, including spectrum flow cytometer systems (Aurora and Northern Lights) and an Aurora cell sorter system: This creates multiple commercial touchpoints, from instruments to ongoing offerings.
  • Evidence of an ongoing usage layer, with tracked cloud user bases (for example, Cytacloud Users): Cloud engagement can support recurring monetization tied to customer adoption.
  • The company reports both installed base metrics and revenue categories (organic, product, and service): That combination suggests instrument deployment can feed subsequent revenue streams.

Bear case

  • Latest quarter operating margin is negative (-41.8%): Gross margin is positive (48.2%), but operating costs are not yet matched to revenue generation.
  • Operating performance may be sensitive to how quickly the company scales from instruments to services and cloud monetization: The need to grow recurring streams is implied by the presence of separate service and cloud-related metrics, while operating margin remains deeply negative.
  • Reported revenue components are small in absolute terms in the provided data set (for example, Organic Revenue 0.04 and Service Revenue 0.02, in USD_B): Smaller revenue base can make fixed and semi-fixed costs harder to cover.
Valuation — source: SEC EDGAR (first-party)
Price$4.66
Market Cap$605.07M
Price / Book1.88
Price / Sales3.21
FCF Yield-3.7%
Profitability & Growth — source: SEC EDGAR
Revenue (TTM)$201.49M
Net Margin-33.0%
Revenue Growth (YoY)0.5%
FCF Growth (YoY)-140.1%
Financial Health — source: SEC EDGAR
Altman Z-Score3.65 (safe)
Valuation vs Sector & Industry
Sector P/E (Technology)33.9
Industry P/E (Measuring & Control Equipment)51.8
Smart-Money Activity — SEC Form 4 / 13F / Congressional disclosures
Top Institutional HolderBlackRock, Inc. ($74.32M)
Institutional Holders Tracked10
Company
SectorTechnology
IndustryMeasuring & Control Equipment
CEOWenbin Jiang
Employees663
CountryUS
IPO Date2021-07-23

Related Companies (Business model: Medical Devices / Life Science Tools; 8 closest by market cap; US-domiciled)

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CTKB earnings history · CTKB institutional & insider holders · CTKB KPIs & operating metrics · CTKB financials · CTKB investor presentations & press releases · CTKB SEC filings · CTKB peers · Congress trades · Insider trades · Short interest · Stock screener

Data as of 2026-08-20.

Figures sourced from U.S. Securities and Exchange Commission (SEC EDGAR) filings and market data. Not personalized investment advice.