In a significant move bridging traditional finance and blockchain, the SIX Group, a major European exchange operator, has integrated its market data feeds with Chainlink's decentralized oracle network. The announcement, confirmed in Zurich, Switzerland, on March 15, 2025, brings real-time and historical equities data from the SIX Swiss Exchange and Spain's BME (Bolsas y Mercados Españoles) Exchange directly on-chain via Chainlink's DataLink service.
The integration enables smart contracts to directly access this institutional-grade data, allowing developers to build new blockchain-based financial products such as tokenized stock indices, structured products, DeFi applications, and prediction markets. The two SIX Group exchanges involved represent a combined market capitalization of €2 trillion.
"Through this integration with Chainlink’s institutional-grade data publishing service, SIX delivers real-time, high-value market data while bringing flagship Swiss and Spanish blue-chip equities on-chain via Chainlink’s DataLink," said Matthew Nurse, SIX's head of market data. "This enables digital asset applications to access trusted market data through proven, secure infrastructure, fostering trust and innovation across global financial ecosystems."
This partnership is seen as a direct response to the explosive growth forecast for the tokenized assets market, a sector some experts believe will become multi-trillion-dollar. It addresses a critical barrier in DeFi: the lack of reliable, institutional-grade data feeds for complex financial instruments. SIX is leveraging Chainlink's proven oracle infrastructure, which already secures tens of billions in value across DeFi, to mitigate technical risk and gain immediate access to a global developer ecosystem.
The data will initially cover major Swiss and European indices and equities, with plans for expansion. SIX will publish its data to Chainlink's network via a dedicated, institutionally managed node, with the aggregated consensus value being broadcast to multiple blockchain environments including Ethereum, Polygon, and Avalanche.
This is the latest in a series of high-profile data integrations for Chainlink. Other major European equities brands with similar arrangements include FTSE Russell and Deutsche Börse, as well as S&P Global in the U.S. Recently, BX Digital and BX Swiss, part of the Boerse Stuttgart Group, also partnered with Chainlink. On the crypto side, Coinbase is feeding its order book and futures data to DataLink.
SIX Group itself is no stranger to blockchain innovation, having launched the SIX Digital Exchange in 2020 and being an early mover in the tokenization space, frequently collaborating with central and commercial banks on distributed ledger technology projects.
