| UCI governed by Belgian law |  Number of institutions (end of period) | | 101 | 101 | 99 | 99 |
| Number of institutions (end of period) | Investment companies with variable capital | | 75 | 75 | 73 | 73 |
| Investment companies with variable capital | p.m. Compartments | | | | | |
| p.m. Operating compartments | | 621 | 601 | 599 | 599 |
| Mutual investment funds | | 9 | 9 | 9 | 9 |
| Pension-saving funds | | 17 | 17 | 17 | 17 |
| Net inventory value (end of period) | | 184 306 | 195 503 | 203 022 | 219 713 |
| Net inventory value (end of period) | Investment companies with variable capital | | 155 880 | 164 802 | 171 037 | 187 192 |
| Mutual investment funds | | 6 461 | 7 032 | 7 265 | 6 765 |
| Pension-saving funds | | 21 965 | 23 668 | 24 720 | 25 756 |
| Subscriptions | | 19 317 | 26 896 | 22 820 | 22 320 |
| Repayments | | 20 082 | 26 461 | 21 305 | 19 845 |
| Net contributions | | -765 | 436 | 1 515 | 2 475 |
| Foreign UCI whose shares and other equity are issued publicly in Belgium | Number of institutions (end of period) | | 559 | 582 | 596 | 600 |
| Number of institutions (end of period) | by legal form | Investment companies with variable capital | | 441 | 454 | 464 | 472 |
| Investment companies with variable capital | p.m. Compartments | | 4 484 | 4 526 | 4 530 | 4 533 |
| Investment funds | | 118 | 128 | 132 | 128 |
| by category | Institutions with UCITS passport | | 559 | 582 | 596 | 600 |
| Institutions with UCITS passport | p.m. Compartments | | 4 732 | 4 787 | 4 729 | 4 732 |
| Institutions without UCITS passport | | 0 | 0 | 0 | 0 |
| Institutions without UCITS passport | p.m. Compartments | | 0 | 0 | 0 | 0 |
| Subscriptions in Belgium | | | | | |
| Repayments in Belgium | | | | | |
| Net contributions in Belgium | | | | | |
| For information purposes: Net inventory value of UCI governed by Belgian and foreign law publicly spread in Belgium (end of period) | | 292 720 | 314 120 | 326 790 | 350 050 |