What is LP Token?
An LP token is a receipt token issued to liquidity providers when they deposit into a pool — representing their proportional share of the pool's assets and accumulated fees.
WHY IT MATTERS
LP tokens are proof of your pool position. When you deposit ETH and USDC into Uniswap, you receive UNI-V2 LP tokens representing your share. When you want to withdraw, burn the LP tokens to reclaim your proportional share of the pool (plus fees earned).
LP tokens are composable — they can be staked in farms for additional rewards, used as collateral in lending protocols (some support this), or traded. This layered utility is DeFi composability at work.
The value of LP tokens changes as the underlying pool assets change in value and as fees accumulate. Tracking LP token value requires understanding both the assets in the pool and the fees earned.