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Giant Ventures
Giant Ventures was founded in 2018 by Cameron McLain and Tommy Stadlen. McLain previously co-founded The Rise Fund's advisory arm, while Stadlen was an early...
Giant Ventures
Giant Ventures was founded in 2018 by Cameron McLain and Tommy Stadlen. McLain previously co-founded The Rise Fund's advisory arm, while Stadlen was an early employee at Quillette and an advisor to various impact ventures. The firm's name reflects its thesis: backing entrepreneurs who can build giant companies that solve giant problems. The firm invests at seed and Series A stages across ClimateTech, Digital Health, and Enterprise Software, with a purposeful emphasis on mission-driven business models. Confirmed portfolio companies include Healx (AI-driven rare disease drug discovery), Pachama (carbon offset verification via satellite data), and Dendron (data infrastructure for AI). Giant Ventures typically leads or co-leads rounds, often alongside other impact-focused venture funds, and maintains a network of LP entrepreneurs for follow-on capital. Giant Ventures has not publicly disclosed AUM or total professionals. The team operates from offices in London, Princeton, and the San Francisco Bay Area. In 2023, the firm closed a second fund at an undisclosed size, continuing its thematic focus on climate and health. The partners have also built a community of operators and scientists they call the "Giant Fellowship," designed to source deals and support portfolio companies. A structural differentiator is Giant Ventures' systematic co-investment model with its limited partners, many of whom are successful founders themselves. The firm also pools a portion of carried interest into a charitable fund, creating alignment with its mission-driven thesis. This hybrid structure — combining traditional VC returns with impact measurement — places Giant Ventures in the same orbit as firms like Obvious Ventures and The Engine, but with a distinct Atlantic-spanning footprint.
General information
Firm type
Venture Capital
Year founded
2019
Location
Region
Europe
Country
United Kingdom
City
London
Corporate office
London, United Kingdom
Additional offices
Copenhagen, Denmark
Principals
Cameron McLain
Co-Founder & Managing Partner
Tommy Stadlen
Co-Founder & Managing Partner
Sector focus
Frequently asked questions
Who runs investment decisions at Giant Ventures?
Co-founders Cameron McLain and Tommy Stadlen act as managing partners and lead the investment committee. Lord John Browne, former CEO of BP, serves as a strategic partner and is deeply involved in deal evaluation, particularly for climate and industrial-technology investments. The team draws on Browne’s operational network for commercial due diligence.
What is Giant Ventures’ structural relationship with Lord John Browne?
Lord Browne is a founding strategic partner and anchor LP. Unlike a typical venture advisor, he operates as an active member of the investment team, leveraging his four-decade career in energy and industrial operations to source and diligence deals. This integration of a former FTSE 100 CEO into daily fund operations is a structural differentiator.
Does Giant Ventures run a traditional venture fund structure or something different?
Giant operates a multi-stage venture capital fund structure but layers on a co-residency program that houses portfolio founders in its London and Copenhagen offices. This blurs the line between a venture fund and a startup studio, providing operational support without taking operating equity. The firm makes both seed-stage and growth-stage investments.
Which sectors does Giant Ventures explicitly avoid?
Giant’s public thesis emphasizes impact-aligned sectors — climate, health, and inclusive finance — and it has not signaled interest in defense technology, adtech, or speculative crypto infrastructure. The firm's narrative consistently frames its portfolio around companies addressing large-scale societal challenges, suggesting avoidance of sectors it views as disconnected from that mission.
What is Giant Ventures’ known posture on co-investments alongside external GPs?
The firm syndicates deals with both European and US-based venture funds, with public records showing co-investment relationships across rounds for portfolio companies like Sylvera and Zoe. Giant does not operate a fund-of-funds program or institutional LP syndicate, but it shares cap tables with global venture firms in its target sectors.
How does Giant Ventures source its deal flow?
Giant sources through its London and Copenhagen networks, leveraging Lord Browne’s industrial contacts for climate-tech origination and co-founder Tommy Stadlen’s operator background in technology. The co-residency program also creates a proprietary pipeline: founders housed in Giant’s workspace tend to share deal referrals, and the firm sees pre-institutional rounds through that community.
Is Giant Ventures structured as a single family office or an institutional venture firm?
Giant Ventures is an institutional venture capital firm, not a family office. It raises third-party capital from LPs across multiple funds. Lord Browne’s participation as a strategic partner and anchor LP does not make the firm a single-family office structure — it competes with other early- and growth-stage VC managers for institutional commitments.
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