Why is the BEL 20 the only index to be capped at 15%?
Indices that are likely to be used as underlying for derivatives or tracker funds must fulfill certain conditions. In particular, the weights of the component stocks must be limited. Indices such as the BEL 20 are used to replace, complement, cover and hedge positions on the Belgian market. Too much weight on one or two companies would render the index useless. The level of 15% is a general accepted market consensus.
