This article comments on the changes of the Spanish main Stock Exchange Index, the Ibex 35 over the period from 2000 to 2006.

A main stock index provides information about same basic structure of a country. The article The IBEX 35 Index From Raw Data to Useful Information shows the distribution of companies amongst the various sectors and these sectors are taken as a starting point for this comparison..

There have been some shifts both in the relative weight of certain companies on both years and a significant number of companies left or merged (fourteen) and nearly an equal number of companies entered (thirteen). The business newspaper