Matrix Partners
Matrix Partners (now branded simply "Matrix") is an early-stage venture capital firm founded in 1977 by Paul Ferri, investing from idea through Series A. Headquartered in San Francisco at 535 Mission Street with a long-standing East Coast office in Cambridge, Massachusetts, the firm is run by former founders and company builders who describe themselves as "contrarians who invest with conviction," backing founders with deep technical expertise and a specific vision of the future. Matrix is a generalist early-stage investor across AI / frontier tech, B2B and enterprise software, fintech, consumer, healthtech, infrastructure, and semiconductors, typically writing seed and Series A checks and leading rounds. Over nearly five decades the firm has backed foundational technology and consumer companies including Apple, HubSpot, Zendesk, Canva, Afterpay, Oculus, Fivetran, Flock Safety, Quora, Postmates, GOAT, and Suno, with a track record spanning semiconductors and networking through today's AI-native startups.
Matrix Partners has 130 portfolio companies tracked on the APIs.io network, of which 32 (25%) publish APIs indexed here.
Its highest-rated API providers on the network are hubspot, Hookdeck, zendesk, CloudZero, canva.
Portfolio on the Network
Portfolio companies that publish APIs indexed on APIs.io, grouped by their API Evangelist rating. Exemplar and Strong are expanded by default.
Strong 1 Solid coverage with minor gaps
Thin 15 Limited public surface area
Rest of Portfolio
98 further portfolio companies that don’t yet have a provider page on the network.
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Properties
Portfolio
Where the firm publishes its investments