SIX Group

SIX Swiss Exchange in Zurich is the stock exchange of Switzerland, and SIX publishes its monthly trading and listing figures together with those of BME Exchange in Spain. Bolsas y Mercados Españoles (BME) operates all stock markets and financial systems in Spain, from equities, fixed income and derivatives to clearing, settlement and market data. With the purchase of the UK exchange Aquis in 2025, SIX now runs primary exchange and MTF businesses across 16 markets in Switzerland, the EU and the UK. An MTF, or multilateral trading facility, is a trading venue that brings buyers and sellers together without being a regulated stock exchange.

The Swiss Interbank Clearing (SIC) system is the central payment system of Switzerland, and SIX Interbank Clearing Ltd has operated it on behalf of the Swiss National Bank since its launch on June 10, 1987. SIC is a real-time gross settlement system, so each payment between two banks settles on its own, irrevocably and around the clock. On November 17, 2023, SIX and the Swiss National Bank launched SIC5, the platform for instant payments that reach the account of the payee within ten seconds. Since August 20, 2024, more than 100 financial institutions that cover over 95 percent of customer payments in Switzerland can receive such payments.

For euro payments between banks, SIX has run the euroSIC system since 1999, and the Swiss Euro Clearing Bank holds the euro balances of its participants. In March 2025, the board of SIX Interbank Clearing decided to discontinue euroSIC on December 31, 2027. The Banking Services unit of SIX also processes debit cards, runs the eBill service and the Swiss QR-bill standard, and operates the shared Bancomat ATM network.

The Financial Information unit of SIX supplies reference, pricing, corporate action, ESG and regulatory data, and its database covers more than 30 million instruments. SIX also calculates the SMI, SLI and SPI, the indices of the Swiss equity market. For digital assets, the crypto asset data of SIX covers more than 85 percent of cryptocurrency market activity worldwide with real-time and historical prices. SIX supplies reference data for reporting under the EU regulation MiCA and under the Crypto-Asset Reporting Framework of the OECD, and it calculates crypto indices such as the CMI 10.

SIX built its first business with digital securities in SIX Digital Exchange (SDX), a separately licensed digital central securities depository. In May 2026, FINMA approved the plan of SIX to merge SIX Digital Exchange AG into SIX SIS AG, the Swiss central securities depository of SIX, which brings digital and traditional securities into one legal entity. The same approval allows SIX to hold crypto assets in custody through that depository, an access model that SIX calls "one plug to two worlds".

The crypto custody service of SIX keeps all private keys in Switzerland under the direct control of SIX and supports Bitcoin, Ethereum, Solana and other major cryptocurrencies and stablecoins. SIX also offers custodial staking for institutional clients, and together with RULEMATCH it provides trading, settlement and custody of crypto assets as one service. SIX designs the target architecture of its Digital Asset Platform to work with any asset and any ledger, so that tokenized and traditional securities use the same services for custody, settlement and corporate actions.

SIX Group Ltd is the parent company of SIX, which operates the Swiss stock exchange, the Swiss central securities depository and the SIC payment system for the Swiss National Bank. Since 2020 the group has also controlled BME, the operator of the Spanish exchanges, so SIX serves the financial centers of both Switzerland and Spain.

SIX is owned by around 120 national and international financial institutions, and these banks are also the main users of its services. According to SIX, this close tie to its owners keeps the infrastructure stable and its prices competitive.

SIX completed the acquisition of a controlling stake in Bolsas y Mercados Españoles (BME) in June 2020. SIX bought 77.9 million BME shares for CHF 2,765.0 million, which equals 93.16 percent of the share capital of BME.

SIX Interbank Clearing Ltd (SIC Ltd), a company of SIX, operates the SIC system on behalf of the Swiss National Bank and under its supervision. SIC Ltd also issues the operating rules for payment traffic in the Swiss financial center and represents it when national and international payment standards are set.

The Securities Services unit runs SIX SIS AG, the national central securities depository of Switzerland, which settles securities transactions in real time and offers custody in more than 50 markets. SIX plans to combine the pan-European equity clearing of SIX x-clear with the multi-asset clearing of BME into one open central counterparty for Europe.