Klaviyo, Inc.
Klaviyo (NYSE: KVYO) provides a business-to-consumer customer relationship management platform that helps companies use consumer data to personalize marketing and service. Its Klaviyo Data Platform unifies consumer profiles and behavioral data from first-party systems and more than 350 integrations, supporting… From the company’s description.
Over the twelve months to Sep 30, 2026, Klaviyo, Inc. reported revenue of $1.47B, up 27.0% from a year earlier, and net income of $7.92M. Its operating margin was −1.3%, and operations generated $273.97M in cash. In fiscal 2025, it reported revenue of $1.23B, up 31.6% from fiscal 2024, and a net loss of $31.77M.
Margins and return on equity change in ; everything else in percent. Fewer shares and less debt are shown plainly, not as bad news — it depends what you make of buybacks. Dotted labels explain each measure. is shown separately from the annual figures.
What Klaviyo, Inc. does
In the company’s own words
Klaviyo (NYSE: KVYO) provides a business-to-consumer customer relationship management platform that helps companies use consumer data to personalize marketing and service. Its Klaviyo Data Platform unifies consumer profiles and behavioral data from first-party systems and more than 350 integrations, supporting real-time segmentation, analytics, automation and AI-driven actions. Products include email, text, WhatsApp and mobile push messaging, marketing analytics, reviews, and service tools such as Helpdesk, Customer Hub and Customer Agent; Marketing Agent generates and executes marketing campaigns. Customers range from entrepreneurs and small businesses to mid-market companies and global enterprises across retail, e-commerce, education, restaurants, travel and other industries. Klaviyo earns subscription revenue, with plans generally based on active consumer profiles and usage of messaging and service capabilities. The company operates as one integrated platform rather than reporting separate business segments. It served more than 193,000 customers as of December 31, 2025, and generated $1.234 billion in revenue for fiscal 2025. Its website is https://www.klaviyo.com.
Company details
- Sector
- Information Technology
- Industry (SIC)
- Prepackaged Software
- Headquarters
- BOSTON, MA
- Fiscal year end
- December
- CIK
- 1835830
- SIC
- 7372
Financial performance, year by year
Fiscal 2023–2025 · USDThe full income statement, balance sheet and cash flow for each of these years — every figure traceable to its filing — is on the Financials tab with a free account.
Who owns Klaviyo, Inc. — and what changed
Funds as of 2026Q2 · superinvestors as of 2026-06-30
Largest fund holders · Klaviyo, Inc.’s weight in each
Fund ownership is a floor, not a census — pensions, insurers and people holding shares directly are not visible here.
Could not be determined for this company: bond issues.
Every fund and institutional holder, quarter by quarter, is on the Ownership tab with a free account.
Recent filings
All filings →Each filing opens into its own statements and disclosures here.
Put this business in context.
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