Insurance company NN Group, tank storage group Vopak and industrial conglomerate Aalberts Industries will move into the Amsterdam blue chip AEX index on March 23.

The three firms replace oil and gas industry supplier Fugro, SBM Offshore and property group Klepierre.

Fugro and SBM move into the Midkap index along with IMCD, BE Semiconductors and Galapagos.

Midkap stock Nutreco is being delisted following its takeover by SHV as is Klepierre which as been taken over by Corio.

The AEX index is made up of the top 25 blue chip companies and is reviewed four times a year. The main overhaul takes place in March.