MarketSessionFeeHook

RobinhoodRegistered

A Uniswap v4 hook that applies dynamic LP fees based on NYSE market session schedules (2026–2050), ranging from 4.5 bps during regular hours to 74.5 bps when markets are closed. It also charges an additional 0.5 bp hook fee on each swap's unspecified amount, which is taken via PoolManager and sent to a configured fee recipient.

0x14637f24f9c778aef1637ba836ff8580395fe0c4 First pool 1 Sept 2026View on explorer

ALooks safeRegistered, verified, immutable

Pools

Dynamic-fee pools

Last new pool

2mo

Code size

4,456 B

What it can do

Runs code on every swap

Its code executes inside each trade in pools that use it.

Can take tokens from swaps

It can take or add tokens during a swap. Fees, burns and custom curves work this way, and so do scams.

Sets its own swap fee

Pools using it let the hook choose the swap fee instead of a fixed tier.

Runs at pool creation

It runs when a pool is created, often to lock in that pool’s settings.

Safety report

Automated checks, not an audit

✓Not upgradeableNo proxy pattern found: the code is fixed.

✓No owner foundNo owner() function: nobody has an admin switch (as far as the standard check goes).

✓Listed in Uniswap’s hook registryRegistered with Uniswap Labs (a listing, not a security review).

✓Source code publishedThe code on the block explorer matches what's deployed (contract: MarketSessionFeeHook).

iCan change swap amountsIt has a ReturnDelta permission. Normal for fees and burns, but also how fake-quote hooks steal.

?No audit linkedAutomated checks only.

Pools using this hook

2 total

PairCreatedFeePool ID

USDG / NVDA 2mo dynamic 0xac14…a609 Tx ↗

USDG / NVDA 2mo dynamic 0x29ad…2197 Tx ↗