Positron Ventures is a € 75m (pre-)seed fund for European science startups that tackle the world’s biggest challenges and can benefit from operational involvement by our team of entrepreneurs, dealmakers and team builders. The next wave of innovation will be driven by science startups working on breakthroughs developed at universities and semi-public R&D centres. Progress in the fields of energy generation and -storage, efficiency of production processes and healthcare is largely dependent on the success of these startups. Positron Ventures specialises in finding and unlocking the value of science startups. We engage with world-class scientists working on scientific breakthroughs in the very early stages of building their company. We recognise that bringing ‘just-from-the-lab’ technologies to market can be a struggle. We therefore act as coaches, confidants and sometimes a shoulder to cry on. Initial ticket size ranges from € 250k to € 3 million. Maximum exposure to a single portfolio company is € 8 million.
Location: Netherlands, North Holland, Amsterdam
Employees: 1-10
Founded date: 2021
Investment Type: Venture Capital
Investment Stage: Pre-Seed
Portfolio 9
| Date | Name | Website | Total Raised | Location |
| 13.09.2026 | Collimate ... | collimatehealth.com | $6.97M | - |
| 25.04.2025 | CellX | doi.org | - | United Sta... |
| 25.04.2025 | Aevoloop | aevoloop.com | $9.65M | Germany |
| 17.09.2024 | Ore Energy | oreenergy.com | $43M | Netherland... |
| - | CimCure | cimcure.com | $5.36M | Netherland... |
| - | Renaissanc... | renfusion.eu | $34.52M | France, Au... |
| - | pasqal | pasqal.io | $139.48M | France, Il... |
| - | Qu&Co | quandco.com | - | Netherland... |
| - | Thorizon | thorizon.com | $45.4M | Netherland... |
Mentions in press and media 7
| Date | Title | Description |
| 30.06.2026 | Bacteria against chemical contamination: CellX secures eight pilots | PFAS, or per- and polyfluoroalkyl substances, are among the most persistent pollutants known. Used for decades in products from firefighting foams to non-stick coatings, they accumulate in groundwater, soil and the human body and have been... |
| 20.05.2026 | Exclusive: Triple Bio emerges from stealth with lipid tech designed to boost milk yields and curb methane | Netherlands-based startup Triple Bio has emerged from stealth with a lipid-based feed additive platform (RumeNRG) designed both to enhance existing methane inhibitors and redirect hydrogen in cattle rumen toward more productive fermentation... |
| 01.03.2025 | CellX Biosolutions: A Green Light for PFAS Degradation | In a world grappling with pollution, CellX Biosolutions emerges as a beacon of hope. This ETH Zurich spinoff has secured CHF 1.7 million in pre-seed funding, propelling its mission to tackle one of the most stubborn environmental foes: PFAS... |
| 25.02.2025 | CellX secures CHF 1.7 million in pre-seed funding | CellX Biosolutions, an ETH spinoff co-founded by Estelle Clerc, Geoffrey Besnier, Fabienne Kurt, and Christian Engler, has developed a groundbreaking microfluidic-based tool that identifies unique bacteria with high degradation performance... |
| 18.08.2022 | Creating safe and CO2-free energy source lands €12.5 million for Thorizon | Advancing the creation of next-generation nuclear reactors and taking a positive step towards addressing our current energy problems, Amsterdam-based startup Thorizon has raised €12.5 million for its thorium molten salt reactor. The funding... |
| 18.08.2022 | Amsterdam-based Thorizon bags €12.5M to build new generation of nuclear power plants | Amsterdam-based Thorizon, a company that wants to accelerate the availability of clean energy and solve the climate crisis, announced that it has raised €12.5M in a round led by Positron Ventures. The company aims to develop a new generatio... |
| 08.06.2022 | Amsterdam-based cancer vaccine biotech startup CimCure raises €5M | Amsterdam-based CimCure, a biotech company developing vaccine-based cancer immunotherapy, announced on Tuesday that it has raised a little over €5M in a Seed round of funding. CimCure was founded in 2016 as a spin-off from Amsterdam UMC’s T... |