Uniswap Labs has introduced the DualPool Hook for its v4 protocol, developed in partnership with Spark. The tool allows liquidity providers to earn yield on idle stablecoins via ERC-4626 vaults while simultaneously providing swap liquidity. This mechanism enables dual revenue streams by combining swap fees with lending yields.
The hook features customizable concentrated liquidity distributions, allowing for tighter liquidity bands around the 1:1 peg. The implementation supports major stablecoins, including USDC, USDT, USDS, and PYUSD. OpenZeppelin performed a security audit of the code, which has been released as open-source.
In June 2026, Spark migrated $150 million in stablecoin liquidity to Uniswap v4. By early September 2026, more than 90 000 hook instances were initialized within the ecosystem. On September 8, 2026, Uniswap Labs released updated infrastructure, including new APIs and security tools for developers.
