SIX Group

SIX Group is a financial-market infrastructure and services company based in Switzerland. It operates infrastructure for the financial centres of Switzerland and Spain and connects financial-market participants in those countries and internationally. The company says it is owned by around 120 national and international financial institutions, which are also the main users of its services and its most important clients. Its business spans multiple parts of the financial-market value chain. Exchange services cover listing, trading and post-trading. SIX also provides post-trade services, financial information such as reference data, regulatory services and indices, and banking services related to cards, cash, billing and payments. The company has also described newer offerings in areas including cybersecurity, ratings and Swiss-franc bond issues. Its exchange operations include SIX Swiss Exchange in Switzerland and BME Exchange in Spain. SIX’s company information describes the group as the third-largest European exchange group by free-float market capitalisation and says that the acquisition of UK-based Aquis in 2025 expanded its exchange businesses across 16 markets, including Switzerland, the EU and the UK. SIX also reports providing post-trade services in more than 50 countries. Its stated strategic ambition is to strengthen its core business and pursue growth through geographic expansion, value-chain extension and thematic growth.

The supplied company information presents SIX as an operator of financial-market infrastructure for Switzerland and Spain, with services linking market participants and supporting the flow of information and money. The evidence provided here does not state the company’s founding date, founders or earlier corporate history, so those details are not included. SIX describes its activities as extending across exchange services, post-trade services, financial information and banking services. Its exchange offering includes listing, trading and post-trading; its information business includes reference data, regulatory services and indices; and its banking portfolio serves industry needs related to cards, cash, billing and payments. The company also identifies cybersecurity, ratings and Swiss-franc bond issues among newer service areas. The group operates SIX Swiss Exchange and BME Exchange. Its company page says that, together, SIX Swiss Exchange and BME make SIX the third-largest exchange group in Europe by free-float market capitalisation. A notable expansion came in 2025, when SIX acquired UK-based Aquis. According to the same company page, this created an exchange group with traditional primary-exchange and multilateral-trading-facility businesses across 16 markets, including Switzerland, the EU and the UK. SIX states that it is owned by around 120 national and international financial institutions. It describes these institutions as the main users of its services and its most important clients, linking its ownership structure to the stability of financial infrastructure and to proximity to customer needs. The company also says it provides post-trade services in more than 50 countries worldwide. In its stated strategic direction, SIX aims to strengthen its core, accelerate growth through geographic expansion, extend its position along the value chain and pursue thematic growth. Its 2025 annual-report announcement says it delivered positive operational results across its business units. The supplied sources do not provide further dated milestones, leadership details or information about the company’s founding.

• Acquisition of Aquis

  [2]SIX: We Connect Global Financial Marketssix-group.com
• Annual report

  [2]SIX: We Connect Global Financial Marketssix-group.com

A financial-market infrastructure provider connecting market participants and offering services across the capital-market value chain, financial information and banking.

• SIX Swiss Exchange

  SIX’s Swiss exchange offering, covering capital-market services including listing, trading and post-trading.

• BME Exchange

  The operator of stock markets and financial systems in Spain, offering products and services including equities, fixed income, derivatives, clearing, settlement and market data.

• Financial information and data products

  Financial information offerings include reference data, regulatory services, indices and market data.

• Securities Services

  Post-trade services across the value chain, including services for clearing and settlement.

• Banking services

  Services for the financial industry related to cards, cash, billing and payments.

• Acquired AquisOther

  Source

1. 1SIX – Infrastructure, Data & Services for Financesix-group.com
2. 2SIX: We Connect Global Financial Marketssix-group.com
3. 3SIX: Products and Services for the Financial Industrysix-group.com
4. 4Listings on the Swiss Stock Exchangesix-group.com
5. 5SIX Group completes €2.8 billion BME acquisition as shareholders accept bid - The TRADEthetradenews.com