[Uniswap Launches VolatilePair Dynamic Fee Hook, First Supporting ETH/USDC Pair] Uniswap announced the launch of the VolatilePair dynamic fee hook based on v4 on the Ethereum mainnet, initially supporting the ETH/USDC trading pair. This mechanism sets separate fees for buying and selling based on recent price fluctuations and recalculates them with each transaction, aiming to improve liquidity management for volatile trading pairs. The fee logic and pool parameters can be upgraded through Uniswap governance without requiring a migration of the liquidity pool.