Euronext // 2021 Universal Registration Document

Presentation of the Group 1 Description of the Business

Open Ended Investment Funds The Euronext Fund Services (“EFS”) offer asset managers ways to achieve better operational efficiency and enhance asset gathering opportunities. By engaging in active discussions with key stakeholders, the Company believes its offering is a relevant choice for any issuer considering fund distribution in Europe. The services include the Euronext Fund Service Amsterdam, first launched in 2007, which enables Fund Managers to further extend the geographic reach of their funds across Europe and will include a broader choice of trading solutions; EFS enables both local and global asset managers to list their funds (whether large or small) on Euronext’s regulated platform, enhancing the profile of the funds and helping to attract higher levels of investment into those funds. As of 31 December 2021, there was turnover on EFS Amsterdam of almost €12 billion, highlighting its distribution benefits to asset managers and investors. Warrants and Certificates Euronext operates a retail structured products business across its continental European franchise, servicing the needs of retail investors via intermediary service provision, namely listing warrants, certificates and structured notes, developing Euronext’s market model for high quality liquidity provision and ensuring execution by retail brokers is cost efficient. Euronext develops relationships with its issuers not only to expand their usage of existing tailored services but also to create new and innovative services for operational efficiency and business expansion. Cash Market structure and functionality Cash trading on Euronext’s markets is hosted on the proprietary strategic architecture Optiq®. The Group’s trading rules provide for an order-driven market using an open electronic Central Order Book for each traded security, various order types and automatic order matching and a guarantee of full anonymity both for orders and trades. While the core trading system is built on this order- driven principle, the flexibility of Euronext’s technology enables Euronext to develop different types of matching algorithms and functionalities to suit the different price formation mechanisms that exist amongst the different cash asset classes and to cater for different market participant needs. For example, Euronext continued to develop its best execution service for retail investors, Best of Book, which brings retail brokers an additional layer of liquidity specifically aimed at offering price improvement for retail order flow. This service is integrated into Euronext’s Central Order Book enabling members to interact with this liquidity through the same connection as for the core market. As at year end, all of Euronext’s retail brokers had signed up for the service. The Company also operates a sophisticated liquidity provider programme for blue chips and liquid mid-cap equities which aims at ensuring Euronext offers superior market quality. Euronext’s

equity markets continue to yield the best market quality metrics amongst its competitors. These metrics include, amongst others, spread, market depth, best price setting and presence time at the best bid and offer spread. The programme encompasses both a presence time obligation at the best bid and offer spread and a minimum passive volume obligation. This volume obligation is of particular interest as, in combination with the presence time obligation, it creates order persistence and therefore increases probability of execution. In a fragmented trading environment, market quality metrics are actively used by trading firms as decision making parameters embedded in their order routing systems and therefore contribute to maintaining Euronext’s market share. Cash Market trading members As at 31 December 2021, Euronext had 216 direct trading members on its cash business, compared to 215 members as at 31 December 2020. The Group has a diverse member base, from retail, big investment banks or regional banks and brokers, with a deep presence in its five domestic markets. Cash trading average daily volume by geographic origin of customers The average daily volume on Euronext’s cash trading markets (including equities, ETFs and structured products) for the last twelve months ended 31 December 2021 and pro forma for the Borsa Italiana trading volumes amounted to €11.8 billion (single counted). The table below shows the proportion of Euronext’s customer base by geographic origin (location of worldwide headquarters) using the Company’s cash markets for the last twelve months ended 31 December 2021.

Denmark 0.4%

Belgium 0.2%

Norway 2.4%

Spain 0.1%

Portugal 0.2%

Sweden 1%

Other 0.3%

United Kingdom 2.8%

Germany 6.8% The Netherlands 6.5%

USA 31.2%

Switzerland 6.8%

Italy 11.1%

France 18.5%

Ireland 11.7%

Europe & UK 68%

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2021 UNIVERSAL REGISTRATION DOCUMENT