Uniswap v4 Launches with Hooks, Redefining DEX Customization

Uniswap v4 has officially launched on Ethereum mainnet and six Layer 2 networks, introducing the long-awaited "hooks" system that allows developers to inject custom logic into liquidity pools. Within the first week, over 200 unique hooks have been deployed, ranging from dynamic fee adjusters to on-chain limit orders.

The most popular hooks include time-weighted average market makers (TWAMM), volatility-based fee curves, and loyalty reward systems that reduce fees for frequent traders. Uniswap Labs has also deployed a "default hook" that routes a portion of fees to the UNI token treasury.

v4's singleton contract architecture — replacing v3's factory model — has reduced gas costs for pool creation by 99%. Combined with native ETH support (eliminating the need to wrap ETH), the upgrade meaningfully lowers barriers for new pool deployers.

Daily volume across all Uniswap versions now exceeds $15 billion, with v4 already capturing 30% of that within its first month. The protocol remains the dominant DEX across all EVM chains by a significant margin.