AEX index

AEX index
	AEX index performance between 1982 and 2012
Foundation	1983
Operator	Euronext
Exchanges	Euronext Amsterdam
Constituents	up to 25
Type	Large cap
Market cap	€850,8 billion (Begin March 2021)
Weighting method	Capitalization-weighted
Related indices	AMX index, AScX index
Website	www.aex.nl

The AEX index, derived from Amsterdam Exchange index, is a stock market index composed of Dutch companies that trade on Euronext Amsterdam, formerly known as the Amsterdam Stock Exchange. Started in 1983, the index is composed of a maximum of 25 of the most frequently traded securities on the exchange. It is one of the main national indices of the stock exchange group Euronext alongside Euronext Brussels' BEL20, Euronext Dublin's ISEQ 20, Euronext Lisbon's PSI-20, the Oslo Bors OBX Index, and Euronext Paris's CAC 40.

^ This is the actual total free-float market cap of the AEX constituents. Because the index uses a basket model which does not include the total number of shares, the market cap of the index per se is significantly less than this. "AEX-Index factsheet March 2021" (PDF). NYSE Euronext. Retrieved 20 April 2021.