The FTSEurofirst Index Series are tradable indices measuring the performance of European portfolios. The Base Date is December 31, 1985. Structure They are a joint product of the FTSE Group, and Euronext, providing pan-European indexes. FTSE provided the structure, and Euronext a distribution and secondary market for cash and derivative securities. *FTSEurofirst 80 Index - the 60 largest companies ranked by market capitalisation in the FTSE Eurozone Index and 20 additional companies selected for their size and sector representation. *FTSEurofirst 100 Index - the 60 largest companies ranked by market capitalisation in the FTSE Developed Europe Index and 40 additional companies selected for their size and sector representation. *FTSEurofirst 300 Index - the 300 largest companies ranked by market capitalisation in the FTSE Developed Europe Index. *FTSEurofirst Euro Supersector Indices