Impermanent Loss
Web3 / defi
Impermanent loss describes the temporary reduction in the value of a liquidity provider's position when the price ratio of tokens in an automated market maker pool diverges significantly from the ratio at the time of deposit. When token prices move apart, the AMM's constant product formula forces the pool to rebalance, leaving liquidity providers holding a less favorable asset distribution compared to simply holding the original tokens. The loss is "impermanent" because it recovers if the price ratio returns to its original state, but if prices diverge substantially before the provider withdraws, they realize a permanent loss compared to holding the assets separately. Example: A liquidity provider deposits 1 ETH and 3,000 USDC into an ETH-USDC Uniswap pool when ETH trades at $3,000. If ETH rises to $4,000 and the pool rebalances, the provider ends up with less ETH and more USDC, losing value compared to simply holding the original amounts outside the pool. Why it matters for DeFi: Impermanent loss is a critical consideration for liquidity providers evaluating risk-reward tradeoffs. Understanding this mechanism helps participants assess whether trading fee income compensates for price volatility exposure, influencing capital allocation in liquidity pools.
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