Positron Ventures

What they fund

• Pre-incorporation scientific spinouts from European research labs and universities [2].
• Breakthroughs in natural sciences, including biotechnology, climate tech, and advanced materials [2].
• First institutional checks for science-based ventures, often leading pre-seed rounds [2].
• Teams with PhD-level scientific expertise and a focus on solving major global challenges [1].
• Companies in the EU, with a concentration in the Netherlands and France [2].

Investment thesis

Positron Ventures backs outstanding scientist-entrepreneurs across the natural sciences from day one, often being the first believers and investors in their pursuit of solving major global challenges [1]. The firm targets teams pursuing breakthroughs in fields like biotechnology, climate tech, and advanced materials, explicitly avoiding enterprise SaaS, consumer apps, and fintech [2]. They engage with academic founders before incorporation, building relationships inside European research labs and universities to source proprietary deal flow [2]. The firm provides support across all aspects of building a company, leveraging a team with deep scientific and operational expertise [1]. Credibility: Firm website and Altss profile detailing investment criteria, team background, and portfolio examples like Ore Energy and Renaissance Fusion [1][2].

Value add

Positron provides support across all aspects of building a company, leveraging a team with deep scientific and operational expertise [1]. The firm engages with founders before incorporation, helping them navigate the transition from research to commercialization [2]. Their team includes former founders, Google dealmakers, and PhD-level scientists, offering a hybrid of operator and research expertise [2]. Fit verdict: Ideal for scientist-entrepreneurs with lab breakthroughs seeking early-stage capital and operational support. Founder diligence script: 1. How does Positron's pre-incorporation engagement model impact my timeline to market? 2. What specific operational support do you provide beyond capital? 3. How do you assess the commercial potential of deep-tech breakthroughs? 4. What is your typical board involvement for pre-seed investments? 5. How do you structure follow-on investments for science-based ventures?

Portfolio focus

• Senara: cell-based milk production using real cow cells to address dairy industry emissions and resource use [1].
• Ore Energy: iron, water, and air batteries for low-cost long-duration energy storage, with Positron leading the first capital raise [1].
• Renaissance Fusion: stellarator nuclear fusion reactor design leveraging HTS magnets and liquid metal shielding [1].
• CimCure: developed an out [1].
• PASQAL: spun out of France's Institut d'Optique, focusing on quantum computing [2].

Notable investments & exits

• No publicly disclosed exits are available for Positron Ventures [2].
• The firm's focus on early-stage science-based ventures suggests a longer investment horizon [2].
• Portfolio companies like Renaissance Fusion and Senara are still in early stages of development [1].
• No information on losses or failed investments is publicly available [2].

Strategic implications

Positron's edge lies in its pre-incorporation sourcing model and scientific team, allowing early access to high-potential spinouts. The firm's focus on deep-tech science ventures carries higher technical risk but offers significant upside if breakthroughs commercialize. A signal to change the read would be a shift towards later-stage investments or a change in geographic focus, which could dilute their niche advantage.

Where they could go further

Positron could enhance its strategy by building a dedicated commercialization support program for scientific founders. The firm could address an under-served segment by focusing more on climate tech and environmental remediation, which are critical global challenges. Positron could improve its sourcing motion by expanding its network in non-traditional European research hubs beyond the Netherlands and France. The firm could add value by facilitating introductions to strategic corporate partners in the natural sciences.