| UCI governed by Belgian law |  Number of institutions (end of period) | | 113 | 108 | 106 | 105 |
| Number of institutions (end of period) | Investment companies with variable capital | | 80 | 81 | 80 | 79 |
| Investment companies with variable capital | p.m. Compartments | | | | | |
| p.m. Operating compartments | | 789 | 767 | 722 | 677 |
| Mutual investment funds | | 16 | 10 | 9 | 9 |
| Pension-saving funds | | 17 | 17 | 17 | 17 |
| Net inventory value (end of period) | | 155 727 | 171 731 | 195 625 | 212 463 |
| Net inventory value (end of period) | Investment companies with variable capital | | 119 188 | 142 902 | 164 398 | 179 677 |
| Mutual investment funds | | 16 341 | 6 589 | 6 932 | 7 227 |
| Pension-saving funds | | 20 197 | 22 240 | 24 295 | 25 559 |
| Subscriptions | | 47 266 | 25 923 | 35 399 | 32 467 |
| Repayments | | 43 954 | 21 401 | 25 745 | 24 275 |
| Net contributions | | 3 312 | 4 522 | 9 654 | 8 192 |
| Foreign UCI whose shares and other equity are issued publicly in Belgium | Number of institutions (end of period) | | 546 | 547 | 541 | 562 |
| Number of institutions (end of period) | by legal form | Investment companies with variable capital | | 428 | 424 | 420 | 437 |
| Investment companies with variable capital | p.m. Compartments | | 4 247 | 4 250 | 4 271 | 4 390 |
| Investment funds | | 118 | 123 | 121 | 125 |
| by category | Institutions with UCITS passport | | 544 | 545 | 539 | 560 |
| Institutions with UCITS passport | p.m. Compartments | | 4 482 | 4 490 | 4 517 | 4 639 |
| Institutions without UCITS passport | | 2 | 2 | 2 | 2 |
| Institutions without UCITS passport | p.m. Compartments | | 4 | 4 | 4 | 3 |
| 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) | | 243 725 | 259 828 | 311 874 | 331 671 |