The Technical Rules describe how IBEX 35 components are selected, mainly based on their liquidity and size. The Technical Advisory Committee is responsible for periodically reviewing the composition.
Frequently asked questions
The IBEX 35 is reviewed during the second week of March, June, September and December, and changes take effect after the close of trading on the third Friday of the review month.
Liquidity factors are taken into account, such as the cash traded in the previous six months, the distribution of cash, spreads, concentration, as well as the free float or capitalisation of companies.