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

Intelligent battery storage for the energy transition. Tesi's portfolio company since 2026.

Tesi received, on 19 August 2026, authorisation to act as a manager of alternative investment funds for its subsidiary Tesi AIFM Oy.

Europe’s first semiconductor-focused VC fund.
Tesi's portfolio fund since 2026.

Bringing efficiency to electricity markets with AI. Tesi's portfolio company since 2026.

The world’s first autofocus glasses. Tesi's portfolio company since 2024.

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