| UCI governed by Belgian law |  Number of institutions (end of period) | | 101 | 99 | 99 | 97 |
| Number of institutions (end of period) | Investment companies with variable capital | | 75 | 73 | 73 | 72 |
| Investment companies with variable capital | p.m. Compartments | | | | | |
| p.m. Operating compartments | | 601 | 603 | 595 | 589 |
| Mutual investment funds | | 9 | 9 | 9 | 8 |
| Pension-saving funds | | 17 | 17 | 17 | 17 |
| Net inventory value (end of period) | | 195 503 | 203 022 | 219 713 | 232 139 |
| Net inventory value (end of period) | Investment companies with variable capital | | 164 802 | 171 037 | 187 192 | 199 196 |
| Mutual investment funds | | 7 032 | 7 265 | 6 765 | 6 748 |
| Pension-saving funds | | 23 668 | 24 720 | 25 756 | 26 195 |
| Subscriptions | | 26 896 | 22 820 | 22 320 | 33 293 |
| Repayments | | 26 461 | 21 305 | 19 845 | 27 978 |
| Net contributions | | 436 | 1 515 | 2 475 | 5 315 |
| Foreign UCI whose shares and other equity are issued publicly in Belgium | Number of institutions (end of period) | | 582 | 596 | 603 | 606 |
| Number of institutions (end of period) | by legal form | Investment companies with variable capital | | 454 | 464 | 472 | 476 |
| Investment companies with variable capital | p.m. Compartments | | 4 526 | 4 530 | 4 544 | 4 539 |
| Investment funds | | 128 | 132 | 131 | 130 |
| by category | Institutions with UCITS passport | | 582 | 596 | 603 | 606 |
| Institutions with UCITS passport | p.m. Compartments | | 4 787 | 4 729 | 4 746 | 4 741 |
| 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) | | 314 120 | 326 790 | 350 050 | 369 390 |