The companies changing everything
We back founders with the vision and tenacity to challenge
convention and create new markets. These are the ones we have
partnered with to date.
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Rebaba - SISTAFUND
Oshen - SISTAFUND
Recupere Metals - SISTAFUND
Female Invest - SISTAFUND
Optimiz Construction - SISTAFUND
Vizzia - SISTAFUND
Underdog - SISTAFUND
Portfolio news
Retired EV batteries still have up to 80% of their useful life remaining. Rebaba gives them a second shot, and just closed a $4.6M round. - SISTAFUND
09/09/2026 — Rebaba — EN

Retired EV batteries still have up to 80% of their useful life remaining. Rebaba gives them a second shot, and just closed a $4.6M round.
Our first unicorn! The Exploration Company secures $450 million in the largest-ever Series C by a European space company. - SISTAFUND
08/09/2026 — The Exploration Company — EN

Our first unicorn! The Exploration Company secures $450 million in the largest-ever Series C by a European space company.
We can track our sleep, our heart and our steps, but not our gut. Suna Health changes that, and just raised £3M! - SISTAFUND
01/09/2026 — Linkedin — EN

We can track our sleep, our heart and our steps, but not our gut. Suna Health changes that, and just raised £3M!
All portfolio news
Rebaba - SISTAFUND
Founder(s)
Paula Runsten, Felix Kruse
Location(s)
Stockholm, Sweden
Founded
2023
Partnered
2026
Powering the future with circular 
battery energy storage systems.
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Oshen - SISTAFUND
Founder(s)
Anahita Laverack, Ciaran Dowds
Location(s)
UK
Founded
2022
Partnered
2026
Unlocking Ocean Intelligence
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Recupere Metals - SISTAFUND
Founder(s)
Katie Marsh, Julien Vaïssette
Location(s)
Paris
Founded
2025
Partnered
2025
Develop a patented mechanical process to produce electrical-grade copper wire from 100% recycled scrap.
Female Invest - SISTAFUND
Founder(s)
Anna-Sophie Hartvigsen, Camilla Cloëtta Falkenberg, Emma Due Bitz
Location(s)
Copenhagen, Denmark
London, UK
Founded
2021
Partnered
2023
On a mission to close the financial gender gap - by democratizing investing for everyone globally
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Optimiz Construction - SISTAFUND
Founder(s)
Marion Malandain
Location(s)
Paris
Founded
2020
Partnered
2022
Helping construction firms optimize materials to save time, money and CO2
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Vizzia - SISTAFUND
Founder(s)
Katrin de Proyart (Dimitrova), Alexandre Leboucher
Location(s)
Paris
Founded
2022
Partnered
2021
Leveraging computer vision and AI to detect illegal waste dumping
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Underdog - SISTAFUND
Founder(s)
Claire Bretton, Laura Chavigny, Mathieu Maure
Location(s)
Nantes
Paris
Founded
2022
Partnered
2022
Full-stack solution for refurbished household appliances
By bridging the gap between circularity and industrial efficiency, the company provides a robust solution for the carbon footprint reduction and the emergence of new post-sales economic models.

From Startup to European Leader With a €7 million Series A in 2025, Underdog has transitioned into a key industrial player structuring the circular economy in Europe.
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