Chainlink is expanding its Data Streams product to support data for U.S. stocks and exchange-traded funds (ETFs), Coindesk reported on Jan. 20.

The move is part of an effort to help decentralised trading platforms reflect stock prices accurately during premarket, postmarket and overnight trading.

Previously, U.S. stock feeds were provided only during regular trading hours. As a result, decentralised exchanges were unable to maintain accurate prices during overnight or premarket trading. Developers had to halt trading or take on unnecessary risk. This kept U.S. stocks from being properly used on-chain. Chainlink plans to address these liquidity problems through the expansion.

Unlike existing price feeds, Chainlink Data Streams is based on a pull model tailored to stock trading. It provides sub-second updates only when a trade occurs, a method designed to cut network gas fees.

Derivatives exchanges BitMEX and Lighter are also using it to offer perpetual U.S. stock and ETF futures contracts. A day before Chainlink's announcement, the New York Stock Exchange (NYSE) also announced it would launch a blockchain-based tokenised stock and ETF trading platform that operates around the clock later this year.