NYSE Euronext celebrates the 20th anniversary of the BEL 20 index

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Amsterdam, Brussels, Lisbon and Paris, 18 March 2011 - NYSE Euronext today celebrated the 20th anniversary of the BEL 20 index with Bell-ringing ceremonies organized across its European markets.

The BEL 20 index was launched on 18 March 1991 with a base value of 1,000 on December 31, 1990. The BEL 20 index is an example of a new generation of indices containing a limited basket of representative stocks. With a sample of 20 stocks, it is designed to be representative of the entire market and to act as a real-time indicator of the local market trend. At the same time, it is a tradable and simple instrument allowing investors to hedge the entire Belgian market.

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About Euronext 
Euronext is the leading European capital market infrastructure, covering the entire capital markets value chain, from listing, trading, clearing, settlement and custody, to solutions for issuers and investors. Euronext runs MTS, one of Europe’s leading electronic fixed income trading markets, and Nord Pool, the European power market. Euronext also provides clearing and settlement services through Euronext Clearing and its Euronext Securities CSDs in Denmark, Italy, Norway and Portugal.
As of December 2025, Euronext’s regulated exchanges in Belgium, France, Ireland, Italy, the Netherlands, Norway and Portugal host over 1,700 listed issuers with €6.7 trillion in market capitalisation, a strong blue-chip franchise and the largest global centre for debt and fund listings. With a diverse domestic and international client base, Euronext handles 25% of European lit equity trading. Its products include equities, FX, ETFs, bonds, derivatives, commodities and indices.
In November 2025, Euronext successfully acquired a majority stake in the Athens Stock Exchange (ATHEX), further expanding its footprint and strengthening its pan-European market infrastructure.

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