Funds, angels and corporates active in European rounds
| Investor | Type | Deals | Companies | Top sector | Active |
|---|---|---|---|---|---|
| Solar Eclipse | Venture capital | 2 | 1 | Healthtech | 2025 |
| SolBigBrain | Venture capital | 2 | 2 | Edtech | 2022 |
| Solo Investments Holdings Limited | Venture capital | 2 | 2 | Fintech | 2025 |
| Somerset Capital Partners | Venture capital | 2 | 2 | Cleantech | 2021–2022 |
| Somnium Space | Corporate | 2 | 2 | Deeptech | 2021–2022 |
| Sontowski & Partner Group | — | 2 | 2 | Proptech | 2018–2019 |
| Sony Pictures Entertainment | Corporate | 2 | 2 | Media | 2016 |
| Sopromec | Investment firm | 2 | 1 | Wellness & Beauty | 2014–2016 |
| Sorare | Corporate | 2 | 2 | Gaming | 2021–2022 |
| Sorbonne Venture | Venture capital | 2 | 2 | Healthtech | 2025 |
| SOSF | — | 2 | 1 | Healthtech | 2021 |
| Source Ventures | Venture capital | 2 | 2 | Media | 2023 |
| Source Code Capital | Venture capital | 2 | 1 | Transportation | 2018–2019 |
| Souter Investments | Venture capital | 2 | 2 | Fashion | 2023–2025 |
| South East Angels | — | 2 | 2 | Deeptech | 2021–2023 |
| South Park Commons | — | 2 | 2 | Edtech | 2021–2025 |
| SOV Ventures | Venture capital | 2 | 1 | HRtech | 2021–2022 |
| Space Angels | — | 2 | 1 | Space | 2017–2018 |
| Space Founders | Venture capital | 2 | 2 | Space | 2024 |
| Space Frontiers Fund II | Investment firm | 2 | 2 | Energy | 2026 |
| Spadel | Venture capital | 2 | 2 | Cleantech | 2025–2026 |
| Spanish Society for Technological Transformation | Government / public | 2 | 2 | Deeptech | 2025–2026 |
| Sparkasse Ulm | Investment firm | 2 | 2 | Software | 2024 |
| Sparkassen Kapital Ulm | Venture capital | 2 | 2 | Healthtech | 2024 |
| SparkUp | Corporate | 2 | 2 | E-commerce | 2016 |
