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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Female Invest - SISTAFUND
Optimiz Construction - SISTAFUND
Vizzia - SISTAFUND
Underdog - SISTAFUND
Portfolio news
When circular industrial tech meets Europe’s strategic autonomy: Recupere Metals raises €5m! - SISTAFUND
02/02/2026 — Maddyness — FR/EN

When circular industrial tech meets Europe’s strategic autonomy: Recupere Metals raises €5m!
When re-industrialisation meets AI: NOTOM raises €2M! - SISTAFUND
21/01/2026 — Maddyness — FR/EN

When re-industrialisation meets AI: NOTOM raises €2M!
A major scientific milestone for Nūmi® - SISTAFUND
14/01/2026 — scientific reports — EN

A major scientific milestone for Nūmi®
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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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