We are an investment company that helps Finland’s most promising companies grow bigger.

Building a resilient European digital future. Tesi's portfolio company since 2020.

Small modular reactors for district heating. Tesi's portfolio company since 2025.

Tesi's Impact Review – 30 years as a builder of growth and developer of the VC & PE market

Egg white protein without animals. Tesi's portfolio company since 2024.

Rotor sails driving the clean transition in maritime. Tesi's portfolio company since 2021.

Tesi's new investment strategy – together with private investors,
as a minority investor, and on a market-driven basis.

We support companies in sustainable development.