SIX Group

2001: SIS acquires the world's most important collection of historical securities and establishes a foundation

The opening of the Wertpapierwelt in Olten as the first museum for historical securities followed in July 2003, and today the exhibition can be seen at the Swiss Finance Museum in Zurich.

2005: Cartel law proceedings

In 2005, SIX Multipay Ltd launched a DCC function (dynamic currency conversion), which was only available on the payment card terminals of SIX Card Solutions Ltd. The Commission of Competition (Weko) intervened and accused the SIX subsidiary of abusing its dominant position. In December 2006, SIX Multipay Ltd also made the DCC function available to other terminal providers and disclosed the interface information. Four years later, the Weko imposed a fine of seven million Swiss francs on SIX.

2008: Merger and change of name

The SWX Group, SIS Group and Telekurs Group merged on 1 January to form Swiss Financial Markets Services AG. The company thus covered the business areas of securities trading, stock exchange transactions, financial information and payment transactions.

On 21 August 2008, Swiss Financial Markets Services Ltd was renamed SIX Group Ltd.

2016: Mobile payment with Twint

Together with various Swiss banks, SIX launched and established the mobile payment solution TWINT.

2018: Partnership with Worldline

SIX entered into a strategic partnership with Worldline. Worldline acquired SIX Payment Services and SIX holds a 27% stake in Worldline.

2020: Purchase of Bolsas y Mercados Españoles (BME)

SIX finalised the purchase of the Spanish BME in 2020.

2024: Acquisition of FactEntry

On March 27, 2024, SIX acquired a majority stake in FactEntry, a global provider of fixed income reference data, analytics, and solutions for financial market participants.

2025: Acquisition of Aquis

In July 2025, SIX completed its acquisition of Aquis, a pan-European stock exchange and technology provider, in a deal valued at approximately £207 million. Following the acquisition, SIX and Aquis had access to 16 capital markets across Europe and roughly 15% of the region’s equity trading activity. The deal was first reported in November 2024.

The «Securities Services» division also includes platforms for direct debits and e-bills as well as the electronic information portal for land register data in Switzerland. It is called Terravis and enables mortgage, property and commercial register transactions.

SIX Interbank Clearing

SIX Interbank Clearing AG (before November 2008: Swiss Interbank Clearing AG), based in Zürich, Switzerland, is a subsidiary of SIX Group. Since 1987 SIX Interbank Clearing has operated on behalf of the Swiss National Bank a payment platform for the processing of domestic and international payments (clearing) in Swiss francs and, since the introduction of the euro, also of payments in euros. This platform - which includes the Swiss Interbank Clearing system for francs and Swiss Euro Clearing Bank (euroSIC) for euros - connects virtually all Swiss financial institutions and a number of banks outside Switzerland. This makes it possible for financial institutions worldwide to handle electronic payments in euros and Swiss francs in Switzerland around the clock in real time.

SIX Interbank Clearing also participates in various committees to standardize national and international payments (IBAN and SEPA) and maintains the tables, history and ongoing discussion for ISO 4217, the ISO standard that defines international currency codes.

Swiss Euro Clearing Bank

The Swiss Euro Clearing Bank or SECB is a special-purpose bank based in Frankfurt, Germany, whose role is to facilitate transactions in euros by banks in Switzerland and Liechtenstein. It is the centerpiece of the euroSIC system, which is the euro counterpart to the Swiss Interbank Clearing (SIC) system for transactions in Swiss francs.

SECB was established in 1998 and started operations on 1 January 1999, the same day as the euro was introduced as single currency of 11 member states of the EU. It settles transactions in euros that are processed on the SIC system, thanks to its access to the TARGET Services platform of the Eurosystem.

Use of SECB is not obligatory. In the mid-2000s, UBS preferred to process transactions in euro via its own direct access to the German real-time gross settlement system, which was subsequently replaced by TARGET2.

Originally owned by several Swiss financial sector participants, SECB has been a fully owned by SIX Group since 2018.

Financial information

Within the business unit Financial Information, SIX obtains real-time financial data from foreign stock exchanges and companies and distributes it further. This includes basic information on listed companies (reference data) and information on measures affecting the capital and voting rights of shareholders (corporate actions). In addition, SIX clients can keep up to date on prices and market rates for around 15 million financial instruments. In addition, SIX calculates indices such as the Swiss Market Index (SMI) or the Swiss Bond Indices (SBI). Based on SIX financial data, banks and other market participants decide on financial transactions and assess investment risks.

Cashless payment transactions

SIX processes mobile payment as well as credit card, debit card and prepaid card payments in Switzerland, Austria and Luxembourg as well as in many other European countries. SIX also enables fiat money to be withdrawn from ATM. With its infrastructure, SIX also creates the necessary secure conditions for hotel, catering and retail to be able to make and accept payments online or at POS terminal using mobile payment methods and payment cards. In Austria, SIX occasionally issued payment cards itself. SIX Payment Services AG was sold in 2018 to Worldline.