SIX, the operator of Switzerland's stock exchange and Spain's BME, has agreed to publish real-time pricing for equities listed on both venues directly to smart contracts through Chainlink, in a deal the two firms announced today (Wednesday).
The arrangement uses Chainlink's institutional data service DataLink and covers companies with a combined market capitalization of around €2 trillion, opening the dataset to more than 2,600 applications running across over 75 public and private blockchains, according to the companies.
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The pipe carries quotes from constituents of the SIX Swiss Exchange and Bolsas y Mercados Españoles, the Madrid-based exchange SIX acquired in 2020. That puts pricing for blue chips such as Nestlé, Novartis, Roche, Banco Santander, and Inditex within reach of any smart contract that subscribes through Chainlink's network, alongside the US-listed names that already dominate onchain equity feeds.
Until now, European blue-chip data on public blockchains has been sparse, with most tokenized equity products and onchain prediction markets pulling from American sources.
Matthew Nurse, head of market data at SIX, said the firm is using the integration to bring "flagship Swiss and Spanish blue-chip equities onchain via Chainlink's DataLink," and to deliver "real-time, high-value market data" to digital asset applications.
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Swiss Blue Chips Meet Smart Contracts
The announcement does not put SIX shares themselves onto a blockchain. What goes onchain is the price feed, delivered in a format that smart contracts can read and act on without a human intermediary.
Trading applications, derivatives platforms, and structured product issuers built on blockchain rails can now consume European exchange data the same way they consume US equity feeds today.
For SIX, the move extends a years-long effort to commercialize its market data outside traditional broker and terminal channels. The exchange operator has spent the past few years building digital asset infrastructure including its SIX Digital Exchange, a regulated venue for tokenized securities, and has experimented with longer trading windows on its conventional venues, including a recent decision to stretch its derivatives day to nearly 14 hours to overlap with US sessions.
For Chainlink, the deal lands one of the largest exchange data sets to date on a network that already supplies pricing to most onchain trading venues. The same infrastructure was used last year to connect JPMorgan's private blockchain to public networks during a tokenized treasury settlement test that fed into the bank's Kinexys deployment with CMC Markets.
Tokenized Equities Race Heats Up Across Venues
The data deal arrives in the middle of a noisy period for onchain equities. Crypto exchanges, brokers, and traditional venues have all been racing to put traditional stocks within reach of around-the-clock trading, with US shares so far getting the most attention.
Kraken's xStocks platform, run with Backed Finance and now operated through Alpaca, crossed $25 billion in tokenized trading volume in under eight months and is now listed on Deutsche Börse's 360X regulated venue.
Bitget, KuCoin, and Robinhood have followed with their own tokenized US equity offerings, mostly limited to non-US users. Alpaca opened the door wider in October with its Instant Tokenization Network, which lets institutions swap real shares for tokens and back without a cash leg.
The US Securities and Exchange Commission approved a Nasdaq pilot in March that will let large-cap US equities and major index ETFs trade in tokenized form on the exchange itself.
From Indices to Prediction Markets, the Cited Use Cases
The companies say the integration is aimed at applications including tokenized indices, structured products, compliant DeFi protocols, prediction markets, and what they describe as "new trading primitives" built on European equity data.
Fernando Vázquez, president of capital markets at Chainlink Labs, framed the appeal in commercial terms, saying DataLink offers data providers "a secure, scalable path to commercialize high-quality market data onchain while preserving the integrity, entitlements, and distribution controls required by regulated financial institutions."
Several of those categories are already drawing meaningful flow. Prediction market venues such as Polymarket and Kalshi have grown into a category large enough that the CFTC has been litigating with state regulators over their treatment, and oil traders have begun using prediction markets as a signal source.
Structured products are already SIX's largest derivatives segment, with more than 70,000 listed instruments on its Swiss venue.
Whether the European data attracts the same kind of trading volume that has gathered around tokenized US equities will depend on whether issuers actually launch products that use it, and whether retail and institutional traders show up to trade them.
SIX did not provide adoption targets or a timeline for the first products built on the feed.
