What is Impermanent Loss?
Impermanent loss refers to the temporary loss of value experienced by a liquidity provider (LP) when depositing tokens into an Automated Market Maker (AMM) liquidity pool compared to simply holding those same tokens in a private wallet.
How Impermanent Loss Occurs
When an LP provides liquidity to a decentralized trading pair, the protocol relies on mathematical formulas to maintain pool balance. As external market prices fluctuate:
- Arbitrageurs buy or sell assets within the pool to align internal prices with external market prices.
- The pool automatically rebalances, leaving the provider with a larger quantity of the lower-performing asset and a smaller quantity of the higher-performing asset.
- Price Divergence: The further the price ratio of the paired assets diverges from their initial deposit ratio, the higher the impermanent loss.
Why is it Called "Impermanent"?
The loss remains unrealized or "impermanent" while the assets remain in the liquidity pool. If the price ratio between the two assets returns to its original level before the LP withdraws their funds, the loss disappears entirely. However, withdrawing liquidity while prices are diverged locks in the loss permanently.
Strategies to Minimize Risk
- Correlated Asset Pairs: Providing liquidity for assets with strong price correlation, such as stablecoin pairs (e.g., USDC/USDT) or pegged assets, drastically reduces divergence risk.
- Trading Fee Offsets: High trading volumes generate fee rewards for LPs, which can often offset or exceed the impact of temporary price divergence.