Following the announced modification of the BEL 20® Index (Barco replaced by Ackermans & van Haaren), the current divisors have to be replaced by the new divisors as published below from Friday 2 March 2007 onwards:
| ISIN code | Name | Old Divisors | New Divisors |
| BE0389555039 | BEL 20 price index: | 210,012.99 | 210,193.14 |
| BE0389557050 | BEL 20 return institutional index: | 120,530.82 | 120,634.21 |
| BE0389558066 | BEL 20 return private index: | 138,969.10 | 139,088.31 |
