BEL 20® Index - New Divisors

Following the announced modification of the BEL 20® Index, the current divisors have to be replaced by the new divisors as published below from Tuesday 15 November 2005 onwards:

ISIN code	Name	Old Divisors	New Divisors
BE0389555039	BEL 20 price index:	210,132.87	210,148.85
BE0389557050	BEL 20 return institutional index:	124,510.04	124,519.51
BE0389558066	BEL 20 return private index:	142,281.53	142,292.35

Based upon the figures until the end of October 2005, there are no reserve candidates for the BEL20® index, as all of the securities that are not in the index fail to meet the minimum Free Float adjusted Market capitalization threshold. This situation is valid for replacements that would occur from Wednesday 16 November 2005 up to and including Thursday 15 December 2005 after trading hours. The full list of the index universe is also available on our website: www.euronext.com