| Capstone Management AB CVR 5566663000 | BoardBoard of Directors | Since 2020 | — | Active |
| Djurgårdsbrunns Tennis AB CVR 5567080204 | BoardBoard of Directors | Since 2020 | — | Dissolved |
| Index Asset Management AB CVR 5567116586 | BoardBoard of Directors | Since 2022 | — | Active |
| Hornsberg Intressenter AB CVR 5567177885 | BoardBoard of Directors | Since 2020 | — | Dissolved |
| Index Living Holding AB CVR 5569437188 | BoardBoard of Directors | Since 2020 | — | Dissolved |
| Index Residence Holding AB CVR 5569478935 | BoardBoard of Directors | Since 2020 | — | Dissolved |
| Fastighets AB Insjövassen CVR 5569686545 | BoardBoard of Directors | Since 2020 | — | Dissolved |
| Index Norrtälje Holding 1 AB CVR 5590567656 | BoardBoard of Directors | Since 2020 | — | Dissolved |
| Index Norrtälje Holding 2 AB CVR 5590567698 | BoardBoard of Directors | Since 2020 | — | Dissolved |
| Kanalstaden Österåker AB CVR 5590685797 | BoardBoard of Directors | Since 2020 | — | Active |
| Index Holding 3 AB CVR 5591188171 | BoardBoard of Directors | Since 2019 | — | Active |
| Index Kista Äng Holding AB CVR 5591225916 | BoardBoard of Directors | Since 2020 | — | Active |
| Startup City Stockholm AB CVR 5592249949 | BoardBoard of Directors | Since 2024 | — | Dissolved |
| StartUp City International AB CVR 5592391519 | BoardBoard of Directors | Since 2024 | — | Dissolved |
| Index Real Estate Sweden 1 AB CVR 5592885189 | BoardBoard of Directors | Since 2022 | — | Active |
| Index Real Estate Sweden 2 AB CVR 5592885213 | BoardBoard of Directors | Since 2022 | — | Active |
| Index Real Estate Sweden 3 AB CVR 5592885221 | BoardBoard of Directors | Since 2022 | — | Active |
| Ersmark Företagspark AB CVR 5593748592 | BoardBoard of Directors | Since 2022 | — | Active |
| Index Real Estate Sweden 5 AB CVR 5593943656 | BoardBoard of Directors | Since 2022 | — | Active |
| Index Nänninge i Norrtälje AB CVR 5594026477 | BoardBoard of Directors | Since 2022 | — | Active |
| Naomi Louisedotter AB CVR 5594169475 | BoardBoard of Directors | Since 2023 | — | Active |
| Bostadsrättsföreningen Magasinet i Norrtälje Hamn CVR 7696329049 | BoardBoard of Directors | Since 2022 | — | Active |