| UCI governed by Belgian law |  Number of institutions (end of period) | | 108 | 106 | 105 | 104 |
| Number of institutions (end of period) | Investment companies with variable capital | | 81 | 80 | 79 | 78 |
| Investment companies with variable capital | p.m. Compartments | | | | | |
| p.m. Operating compartments | | 767 | 722 | 677 | 640 |
| Mutual investment funds | | 10 | 9 | 9 | 9 |
| Pension-saving funds | | 17 | 17 | 17 | 17 |
| Net inventory value (end of period) | | 171 731 | 195 625 | 212 463 | 189 176 |
| Net inventory value (end of period) | Investment companies with variable capital | | 142 902 | 164 398 | 179 677 | 160 564 |
| Mutual investment funds | | 6 589 | 6 932 | 7 227 | 6 932 |
| Pension-saving funds | | 22 240 | 24 295 | 25 559 | 21 680 |
| Subscriptions | | 25 923 | 35 399 | 67 866 | 41 287 |
| Repayments | | 21 401 | 25 745 | 50 020 | 32 635 |
| Net contributions | | 4 522 | 9 654 | 17 847 | 8 652 |
| Foreign UCI whose shares and other equity are issued publicly in Belgium | Number of institutions (end of period) | | 545 | 539 | 561 | 567 |
| Number of institutions (end of period) | by legal form | Investment companies with variable capital | | 424 | 420 | 438 | 447 |
| Investment companies with variable capital | p.m. Compartments | | 4 255 | 4 276 | 4 394 | 4 461 |
| Investment funds | | 121 | 119 | 123 | 120 |
| by category | Institutions with UCITS passport | | 543 | 537 | 559 | 566 |
| Institutions with UCITS passport | p.m. Compartments | | 4 493 | 4 520 | 4 641 | 4 715 |
| Institutions without UCITS passport | | 2 | 2 | 2 | 1 |
| Institutions without UCITS passport | p.m. Compartments | | 4 | 4 | 3 | 1 |
| 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) | | 259 828 | 311 874 | 331 671 | 318 903 |