Spark Shifts $150M to Uniswap (UNI) v4, DualPool Hook Incoming
Spark, a leading DeFi protocol specializing in stablecoin liquidity and yield optimization, has migrated $150 million in stablecoin liquidity to Uniswap (UNI) v4. The assets are set to transition to DualPool—a new v4 hook co-developed with Uniswap Labs—designed to maximize capital efficiency while maintaining deep liquidity for swappers.
The DualPool hook innovatively balances two traditionally conflicting objectives in DeFi: earning yield on idle liquidity and ensuring sufficient liquidity for trading. Liquidity will sit in Spark's ERC-4626 yield-generating vaults and shift into Uniswap pools only when trades are executed. This ensures that liquidity providers (LPs) earn yield during idle periods without sacrificing availability for swaps.
How DualPool Works
DualPool operates by dynamically moving stablecoin liquidity between Spark's vaults and Uniswap v4 pools. When a swap is initiated, the hook withdraws only the necessary amount of liquidity, deploys it as concentrated liquidity within a specified price range, processes the trade, and returns the remaining funds to the yield vault—all within the same block. The process ensures seamless trading for users while maximizing capital productivity for LPs.
Initially, the $150 million liquidity includes stablecoins such as USDS, with USDT and PYUSD to be added under Spark's coordination framework. This setup not only reduces slippage for swappers but also introduces a more efficient model for deploying stablecoin reserves on-chain.
Why It Matters
Stablecoins represent a growing share of on-chain activity, and liquidity fragmentation remains a persistent challenge for DeFi protocols. Uniswap currently handles nearly 60% of all stable-stable trading volume across major blockchains, according to its team. By introducing DualPool, Spark aims to optimize liquidity deployment while contributing to Uniswap's dominance in this segment.
The broader implications are significant for market makers and asset issuers. The DualPool model allows stablecoin reserves to generate yield while remaining agile enough to support trading activity. This could redefine how capital efficiency is approached in DeFi, addressing long-standing inefficiencies in liquidity fragmentation and idle capital.
Spark's Strategic Position
As part of the Sky ecosystem (formerly MakerDAO), Spark has positioned itself as a programmable capital allocator within DeFi. With a total value locked (TVL) ranging between $5.24 billion and $6.8 billion as of early 2026, Spark is one of the largest DeFi lending platforms. Its products, such as SparkLend and Spark Savings, enable users to unlock yield potential across stablecoins like USDC, USDT, and PYUSD.
By integrating the DualPool hook into Uniswap v4, Spark strengthens its role as a liquidity and yield engine within the broader DeFi ecosystem. This collaboration with Uniswap Labs also underscores the increasing trend of DeFi infrastructure protocols working together to tackle systemic inefficiencies.
Looking Ahead
The DualPool hook will initially be managed by Spark, with plans to open-source the technology following audits. This could pave the way for other protocols to adopt or adapt the hook for their liquidity needs. Swappers can already access the migrated liquidity via the Uniswap Web App, Wallet, or API.
For investors and LPs, the move signals a significant step towards higher capital efficiency in DeFi. As stablecoins continue to dominate on-chain activity, innovations like DualPool could become a blueprint for future liquidity models, potentially reshaping how yield and liquidity are balanced across the industry.