Uniswap Labs Unveils Dynamic-Fee Hook for Stable Pairs

Uniswap Labs has launched StablePair Hook, a dynamic-fee mechanism designed to optimize stable pair trading on the Uniswap Protocol. The feature is live on Ethereum mainnet with two pools: USDC/USDG and USDC/USDT.

The Uniswap Protocol processed over $43.4 billion in stablecoin-to-stablecoin swaps alone in the second quarter of 2026, making it a critical component of decentralized finance (DeFi). However, traditional static fees often leave value in the pool, allowing arbitrage bots to keep spreads or pricing pools out.

StablePair Hook addresses this issue by setting dynamic fees based on how far the pool has drifted from its true rate. Inside a tight band around the rate, the fee adjusts under every swap to quote a fixed bid/ask spread. Once the price drifts outside that band, swaps pushing it further off pay no fee and instead hand the pool a good price.

The mechanism is designed to evolve over time through Uniswap Governance, allowing pool parameters and fee logic to be upgraded without requiring pools to migrate.