| UCI governed by Belgian law |  Number of institutions (end of period) | | 126 | 126 | 123 | 119 |
| Number of institutions (end of period) | Investment companies with variable capital | | 89 | 89 | 87 | 84 |
| Investment companies with variable capital | p.m. Compartments | | | | | |
| p.m. Operating compartments | | 1 027 | 1 059 | 986 | 935 |
| Mutual investment funds | | 20 | 20 | 19 | 18 |
| Pension-saving funds | | 17 | 17 | 17 | 17 |
| Net inventory value (end of period) | | 134 499 | 155 271 | 157 519 | 147 601 |
| Net inventory value (end of period) | Investment companies with variable capital | | 88 147 | 107 618 | 109 741 | 103 466 |
| Mutual investment funds | | 27 625 | 28 002 | 28 097 | 25 907 |
| Pension-saving funds | | 18 727 | 19 651 | 19 680 | 18 228 |
| Subscriptions | | 29 158 | 38 689 | 36 445 | 69 065 |
| Repayments | | 23 442 | 21 920 | 34 676 | 78 357 |
| Net contributions | | 5 716 | 16 769 | 1 769 | -9 291 |
| Foreign UCI whose shares and other equity are issued publicly in Belgium | Number of institutions (end of period) | | 539 | 529 | 555 | 549 |
| Number of institutions (end of period) | by legal form | Investment companies with variable capital | | 396 | 390 | 404 | 418 |
| Investment companies with variable capital | p.m. Compartments | | 3 925 | 3 775 | 3 920 | 4 116 |
| Investment funds | | 143 | 139 | 151 | 131 |
| by category | Institutions with UCITS passport | | 535 | 529 | 555 | 549 |
| Institutions with UCITS passport | p.m. Compartments | | 3 893 | 3 989 | 4 165 | 4 336 |
| Institutions without UCITS passport | | 4 | 4 | 2 | 2 |
| Institutions without UCITS passport | p.m. Compartments | | 32 | 17 | 4 | 4 |
| 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) | | 224 028 | 236 690 | 238 031 | |