DeFi protocol Spark has moved roughly $150 million in stablecoin liquidity into two Uniswap v4 pools on Ethereum, marking one of the largest AMM liquidity migrations in DeFi history. The deployment pairs USDS with PYUSD and USDT, using USDS as the foundation.
These pools are phase one of what Spark calls the Stablecoin FX Layer — an attempt to build shared liquidity infrastructure so stablecoin issuers don’t each have to bootstrap their own pools, coordinate market makers, and manage inventory separately.
A Spark spokesperson described the move as bootstrapping shared liquidity on Uniswap v4. The idea is simple: if you’re a stablecoin issuer, you shouldn’t need to build your own liquidity network from scratch. Plug into a shared system instead.
What comes next
Phase two involves the Shared Liquidity Layer and a DualPool hook built on Uniswap v4’s programmable architecture. The hook would let capital that isn’t immediately needed for trades get deployed into governance-approved yield strategies and liquidity venues. Think of it as making idle capital productive without draining market depth.
The DualPool hook still needs its own security review and testing before going live. Phase one uses standard Uniswap v4 pools without the programmable framework.
Spark said it’s working with additional partners across the stablecoin ecosystem but isn’t ready to name them yet.
The bigger picture
Standard Chartered identified Uniswap as a potential beneficiary of tokenized assets moving into DeFi earlier this month, forecasting that total DeFi assets could reach $2.7 trillion by 2030. This $150 million migration is a more immediate stress test of that thesis, even if it involves stablecoins rather than tokenized securities.
It also builds on momentum from BlackRock’s February move to bring its $2.1 billion tokenized Treasury fund BUIDL to Uniswap, letting institutional investors trade the security through decentralized infrastructure. The question now is whether shared liquidity actually works at scale — and whether Uniswap v4’s hooks deliver on their promise without introducing new risks.
