New York, New York, September 10th, 2026, Chainwire
Uniswap Labs today launched StablePair Hook, a Uniswap v4 dynamic-fee hook built for stable pairs, such as USDC/USDT or WBTC/cbBTC. It is live on Ethereum mainnet with two pools, USDC/USDG and USDC/USDT.
Stable pairs are among the most traded markets in DeFi. On the Uniswap Protocol, stablecoin-to-stablecoin swaps alone reached $43.4 billion in the second quarter of 2026, more than the next three onchain venues combined.
Keeping Value in the Pool
A stable pair trades around a known rate. When the price drifts, there is value in bringing it back to parity. A static fee hands most of that to arbitrage bots. Set the fee low and they keep the spread. Set it high and the pool prices itself out.
StablePair Hook replaces the static fee with a dynamic one. On every swap, it measures how far the pool has drifted from its true rate, or reference price, and sets the fee to match.
- 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 that push the price further off pay no fee. They hand the pool a good price to begin with
- Swaps correcting it from outside the band go through a Dutch auction. The fee starts high, then drops each block until someone takes it. LPs keep the difference
StablePair Hook is designed to evolve over time and with usage. Pool parameters and fee logic can be upgraded through Uniswap Governance, so the mechanism improves without pools needing to migrate.
Building the Future of Market Structure
The Uniswap AMM opened DeFi to every asset. Hooks extend what’s possible. Now every pool can set its own rules, fees, and pricing logic.
Uniswap Labs is building hooks with the issuers and LPs who use them, and open sourcing them so teams can start from working code. StablePair Hook joins DualPool, Permissioned Pools, and LitePSM, with more on the roadmap.
About Uniswap Labs
Uniswap Labs is a core contributor to the Uniswap Protocol, the world’s largest decentralized exchange by trading volume, which has processed more than $4.6 trillion in volume. Uniswap Labs also builds products that help users access the protocol, including the Uniswap Web App, Wallet, and Uniswap API.
Contact
Bridgett Frey
Uniswap Labs
[email protected]
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