| UCI governed by Belgian law |  Number of institutions (end of period) | | 104 | 103 | 101 | 101 | 99 |
| Number of institutions (end of period) | Investment companies with variable capital | | 78 | 77 | 75 | 75 | 73 |
| Investment companies with variable capital | p.m. Compartments | | | | | | |
| p.m. Operating compartments | | 676 | 639 | 621 | 601 | 599 |
| Mutual investment funds | | 9 | 9 | 9 | 9 | 9 |
| Pension-saving funds | | 17 | 17 | 17 | 17 | 17 |
| Net inventory value (end of period) | | 212 463 | 189 176 | 184 306 | 195 503 | 203 022 |
| Net inventory value (end of period) | Investment companies with variable capital | | 179 677 | 161 032 | 155 880 | 164 802 | 171 037 |
| Mutual investment funds | | 7 227 | 6 464 | 6 461 | 7 032 | 7 265 |
| Pension-saving funds | | 25 559 | 21 680 | 21 965 | 23 668 | 24 720 |
| Subscriptions | | 67 866 | 41 287 | 19 317 | 26 896 | 22 820 |
| Repayments | | 50 020 | 32 635 | 20 082 | 26 461 | 21 305 |
| Net contributions | | 17 847 | 8 652 | -765 | 436 | 1 515 |
| Foreign UCI whose shares and other equity are issued publicly in Belgium | Number of institutions (end of period) | | 559 | 565 | 559 | 582 | 596 |
| Number of institutions (end of period) | by legal form | Investment companies with variable capital | | 436 | 446 | 441 | 454 | 464 |
| Investment companies with variable capital | p.m. Compartments | | 4 382 | 4 442 | 4 484 | 4 526 | 4 530 |
| Investment funds | | 123 | 119 | 118 | 128 | 132 |
| by category | Institutions with UCITS passport | | 558 | 565 | 559 | 582 | 596 |
| Institutions with UCITS passport | p.m. Compartments | | 4 630 | 4 695 | 4 732 | 4 787 | 4 729 |
| Institutions without UCITS passport | | 1 | 0 | 0 | 0 | 0 |
| Institutions without UCITS passport | p.m. Compartments | | 2 | 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) | | 331 671 | 318 903 | 292 720 | 314 120 | 308 070 |