Impermanent Loss Explained
Impermanent loss (IL) is a risk faced by liquidity providers (LPs) in decentralized finance (DeFi) when they stake assets in an Automated Market Maker (AMM) liquidity pool
2. It represents the difference in value between holding assets in a personal wallet versus depositing them into a liquidity pool
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This loss occurs when the price of the assets deposited in the pool changes relative to each other
5. If the prices of the tokens in the pool diverge from their initial ratio, the dollar value of the assets when withdrawn can be lower than if the LP had simply held the tokens in their wallet
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Key Characteristics of Impermanent Loss
- Mechanism Impermanent loss is triggered by price movements that cause the liquidity pool to become unbalanced . Arbitrage traders then step in to rebalance the pool, which can lead to a loss for the liquidity provider 7.
- Impermanence The term "impermanent" means the loss is not locked in until the LP withdraws their funds from the pool 32. If the asset prices return to their original state, the loss can be reversed 3. However, if the prices do not revert, the impermanent loss can become permanent 7.
- Cause The loss increases as the change in the relative value between the two pooled assets increases 5. If both assets in the pool rise or fall by the same percentage, no impermanent loss occurs 5.
- Offsetting Factors Liquidity providers earn trading fees and potentially other network rewards, which can help offset the impermanent loss 2. However, significant price volatility can cause the loss to outweigh the income generated from fees 7.
Solutions and Mitigation
Protocols have developed various methods to address or mitigate impermanent loss for liquidity providers:
- Protocol-Owned Liquidity Some protocols, such as those using the Olympus Pro model, aim to own their liquidity, meaning the protocol itself earns the trading fees and bears the impermanent loss 8.
- Innovative AMM Functions Upgrades to AMMs, such as those brought by Balancer and Curve, have been designed to reduce the probability of impermanent loss, especially in high-volatility environments 7.
- Impermanent Loss Protection (ILP) Protocols like THORChain offer Impermanent Loss Protection, which ensures that LPs either realize a profit or at least break even after a minimum holding period (e.g., 100 days), with protection increasing linearly over that time .
- Concentration-Asymmetric Liquidity Model (CALM) Algorithms like CALM, used by DefiPlaza, treat trades that increase impermanent loss differently from those that reduce it, aiming to minimize the negative impact on LPs 10.