European SIX Group exchange sends stock data feeds to Chainlink, onboarding assets with a market cap of €2 trillion

European exchange operator SIX Group has announced a partnership with the decentralized oracle network Chainlink, sending its Swiss SIX Swiss Exchange and Spanish BME Exchange stock market data directly into blockchain networks via Chainlink nodes. Together, the two exchanges cover more than €2 trillion in market value of listed assets; this marks yet another milestone in the large-scale onboarding of traditional financial data to the blockchain.

Partnership Structure and Technical Implementation

Under the partnership, SIX Group will use Chainlink’s node infrastructure to transmit real-time stock market data to the blockchain environment. This means that smart contracts can directly access market data fed from regulated exchanges, without relying on centralized third-party data intermediaries.

Chainlink’s DataLink service, launched in 2025, is the technical foundation for this kind of collaboration. The service is designed to securely bridge data from traditional financial institutions to on-chain environments while ensuring data integrity and real-time performance.

Potential Use Cases

Once SIX Group’s market data is onboarded to the blockchain, it could enable a variety of new financial applications. In the tokenized asset space, developers can use on-chain stock index data to build tokenized stock index products or structured products. In DeFi scenarios, decentralized protocols can bring real-world stock price data in as collateral valuation inputs or trigger conditions.

In addition, prediction market platforms can also leverage exchange-level data feeds to provide reliable settlement references for prediction contracts based on stock market performance, greatly improving participants’ confidence in how outcomes are determined.

Acceleration of the Trend to Onboard Traditional Financial Data to the Blockchain

SIX Group is not the first traditional financial institution to partner with Chainlink. Previously, major financial data providers such as Deutsche Börse, FTSE Russell, and S&P Global have already rolled out similar arrangements to bring their data into blockchain ecosystems.

This trend reflects a shift in the traditional financial industry’s stance toward blockchain technology—from watching and waiting to active participation. When market data from major exchanges worldwide can be accessed directly on-chain, the boundary between TradFi and DeFi will become even more blurred—smart contracts will no longer be limited to processing only native on-chain assets, but will be able to directly connect with traditional financial markets worth trillions of dollars.

SIX Group Background

Headquartered in Zurich, Switzerland, SIX Group operates the SIX Swiss Exchange and the Spanish BME Exchange, while also providing financial information, securities services, and payment infrastructure. As one of Europe’s most important financial market infrastructure operators, SIX Group’s partnership with Chainlink provides an authoritative solution to the institutional-level data needs of on-chain financial applications.

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