Impermanent Loss Explained (and How to Limit It)
Impermanent loss is the difference in value between providing liquidity to an automated market maker (AMM) pool and simply holding the same two assets in your wallet. It happens because AMM pools automatically rebalance as prices move, arbitrage traders buy the underpriced asset out of the pool until its price matches the broader market, which leaves the liquidity provider holding more of whatever asset depreciated and less of whatever appreciated. The loss is called “impermanent” because it exists only on paper as long as your funds remain in the pool; it becomes permanent, realized, the moment you withdraw while prices remain diverged from where you deposited.
How It Happens
Most AMM pools, Uniswap v2-style pools in particular, use a constant product formula: x × y = k, where x and y are the quantities of the two tokens in the pool, and k is held constant. When someone trades against the pool, the ratio of x to y shifts, and the pool’s pricing adjusts algorithmically based on that new ratio, no external price feed or order book involved.
This creates an automatic rebalancing mechanism, but it’s a mechanism that lags the broader market by design. If the price of one asset in the pool moves on outside exchanges, the pool’s internal price doesn’t move until someone trades against it. Arbitrageurs specifically look for this gap: they buy the now-underpriced asset out of the pool and sell it elsewhere for a profit, and they keep doing this until the pool’s price matches the external market again. Every one of those arbitrage trades pulls the appreciating asset out of the pool and leaves more of the depreciating one behind.
Here’s a concrete example. Suppose you deposit 1 ETH and 3,000 USDC into a pool, with ETH priced at $3,000 at the time of deposit, an even $6,000 total position. If ETH’s price then doubles to $6,000 on the broader market, arbitrageurs will buy ETH out of the pool until the pool’s internal price matches. Because the pool maintains its constant-product ratio, your share of the pool ends up holding roughly 0.707 ETH and 4,242.6 USDC, worth approximately $8,485 at the new prices in this scenario, using the standard constant-product formula. Simply holding the original 1 ETH and 3,000 USDC outside the pool, by contrast, would be worth $9,000 at the new ETH price. The roughly $515 difference between $8,485 and $9,000 is the impermanent loss, about 5.7% relative to holding, before accounting for any trading fees you earned while providing liquidity.
That relationship, a doubling in price producing an impermanent loss in the range of a few percent relative to holding, holds regardless of which direction the price moves; the loss depends on the magnitude of the price change, not whether the asset went up or down. Small, gradual price movements produce correspondingly small impermanent loss. Large, sharp divergences produce meaningfully larger loss, and the relationship isn’t linear: a price move of 5x or more between the two pooled assets produces a substantially worse result, proportionally, than a 2x move does.
Why Size Matters
Impermanent loss, expressed as a percentage, is identical whether you deposit $500 or $5 million into the same pool at the same price ratio. What changes with size is the absolute dollar amount at stake, and, more practically, your ability to exit or adjust the position without creating additional costs of its own.
A small position experiencing a few percent of impermanent loss is a modest, largely theoretical figure until withdrawal. The same percentage applied to a large position is a real number that matters operationally, and a large LP position also faces a specific problem smaller positions mostly avoid: withdrawing a large share of a pool’s liquidity can itself move the pool’s price and affect other LPs’ positions, and re-entering a different pool or rebalancing a large position incurs its own slippage and gas costs proportional to size. For a treasury or whale-sized LP position, the combination of impermanent loss and the transaction costs of managing that position at scale compounds in a way that a casual, smaller LP position doesn’t experience to the same degree.
Concentrated liquidity pools, the model introduced by Uniswap v3 that lets LPs focus capital within a specific price range rather than across the entire curve, add another dimension specifically relevant at size. Concentrating capital in a narrow range increases capital efficiency and potential fee income, but it also means a large price move can push the pool’s price entirely outside your chosen range, at which point your position stops earning fees and sits fully exposed to whichever single asset the price moved into, with no further offsetting fee income until you actively adjust the range.
How to Limit Exposure
Choose correlated or stable pairs. Impermanent loss scales with how much the two pooled assets’ prices diverge from each other, not with absolute price volatility of either asset alone. A pool pairing two assets that tend to move together, two stablecoins, or a stablecoin against another highly correlated asset, experiences far less impermanent loss than a pool pairing two assets with unrelated price behavior, even if both are individually volatile.
Consider single-sided or non-LP yield instead. Standard AMM liquidity provision requires depositing both assets and accepting the rebalancing mechanics described above. Yield sources that don’t require pairing two volatile assets against each other, direct lending on a protocol like Aave, or a routing-based yield deposit that places funds directly into a single-asset position, avoid impermanent loss entirely, because there’s no pooled ratio to diverge from in the first place. This is a meaningfully different risk profile than LP exposure, worth weighing directly against whatever fee income a given pool is currently generating. For a broader look at yield options that don’t carry LP-specific risk, see Best Stablecoin Yield in 2026 and What Is a Yield Aggregator?
Size ranges deliberately in concentrated liquidity pools. For pools using concentrated liquidity, choosing a wider price range reduces the chance that normal volatility pushes the price entirely outside your range and halts fee income, at the cost of somewhat lower capital efficiency and fee rate compared to a narrower range.
Avoid frequent withdrawal and re-deposit cycles. Impermanent loss only becomes a realized, permanent loss at the moment of withdrawal. Withdrawing and re-entering a position frequently, chasing marginally better pools or reacting to short-term price moves, both locks in loss repeatedly and adds gas cost each time. Most practitioners hold LP positions for weeks or months at minimum, not days, specifically to let fee income have a meaningful chance to offset whatever impermanent loss accrues.
IL vs Fees Earned
Impermanent loss on its own is only half of the relevant calculation. Liquidity providers earn a share of trading fees generated by the pool, and the practical question for any LP position isn’t “does this pool have impermanent loss” (nearly all AMM pools with volatile pairs do, to some degree), it’s whether accumulated fee income exceeds the impermanent loss accrued over the same period. Net return, in this framing, is fee income plus any additional incentive rewards, minus impermanent loss.
This calculation depends heavily on trading volume relative to pool size and the length of time the position stays deposited. A high-volume pool generates more fee income per dollar of liquidity than a low-volume one, all else equal, which can offset a meaningful amount of impermanent loss even in a volatile pair. Research on Uniswap v3 specifically has found that a majority of liquidity providers on the platform were net unprofitable once impermanent loss was weighed against fee income, underscoring that a pool’s advertised fee rate alone doesn’t guarantee a positive outcome; realized volume and how well a concentrated position’s range tracked actual price movement both matter substantially.
When LP Is Still Worth It
Providing liquidity remains a reasonable choice in specific situations, despite the impermanent loss risk:
Stable or highly correlated pairs. For stablecoin-to-stablecoin pools or similarly correlated pairs, impermanent loss is minimal by design, since the price ratio between the two assets rarely diverges significantly. Fee income in these pools, while typically lower per trade than volatile pairs, comes with substantially reduced IL risk to offset.
High-volume pools with strong fee generation. For a pool processing significant trading volume relative to its total liquidity, fee income can meaningfully exceed impermanent loss even for a genuinely volatile pair, particularly during periods of active, two-directional trading rather than a sustained one-directional price trend.
Positions held through a full market cycle. Because impermanent loss is only realized at withdrawal, a position held through a price move that later reverts toward the original deposit ratio can see the paper loss shrink or disappear entirely, while the position continued earning fees the entire time. This isn’t a strategy to rely on for a specific outcome, since there’s no guarantee prices revert, but it’s a real dynamic that has favored patient LPs in pairs that move in cycles rather than persistent one-way trends.
Limitations
Impermanent loss can exceed fee income, especially in short holding periods or sharp one-directional moves. A pool entered shortly before a large, sustained price divergence, without enough time for fee accumulation to offset it, can produce a real net loss relative to simply holding.
Extreme price divergence produces severe, theoretically unbounded loss. If one asset in a pair collapses toward zero, the AMM’s rebalancing mechanic leaves the LP holding an increasing share of the collapsing asset and almost none of the stable counterpart, a scenario meaningfully worse than the moderate examples typically used to illustrate the concept.
Concentrated liquidity positions require active management. A narrow price range can maximize fee income when price stays within it, but requires monitoring and periodic adjustment as price moves, which a passive, set-and-forget LP position in a wide-range or full-range pool doesn’t require to the same degree.
Gas costs affect the calculus for smaller positions specifically. Frequent range adjustments or position management on Ethereum mainnet carry real gas cost that can offset a meaningful share of fee income for smaller LP positions, less so proportionally for larger ones.
FAQ
What is impermanent loss in simple terms?
It’s the gap between what your liquidity pool position is worth and what simply holding the same two assets outside the pool would have been worth, caused by the pool automatically rebalancing as prices move. It’s called impermanent because it only becomes a real, locked-in loss once you withdraw while prices remain diverged from your deposit ratio.
How is impermanent loss calculated?
For a standard 50/50 constant-product pool, impermanent loss depends only on the ratio of price change between the two pooled assets, not the direction of the move. The commonly used formula is IL = 2√d / (1+d) − 1, where d is the ratio of the new price to the original price. A price ratio change of 2x (one asset doubling relative to the other) produces an impermanent loss of roughly 5.7% relative to holding; larger divergences produce disproportionately larger loss.
Is impermanent loss worse on large positions?
The percentage loss is identical regardless of position size at the same price divergence; a $5,000 position and a $5 million position in the same pool experience the same percentage impermanent loss. What changes with size is the absolute dollar impact, and the practical cost of exiting or adjusting a large position, since withdrawing significant liquidity or rebalancing at scale can itself incur meaningful slippage and gas cost on top of the impermanent loss itself.
How do I avoid impermanent loss?
The most direct way is choosing correlated or stable asset pairs, where price divergence between the two pooled assets is minimal by design. Beyond pair selection, yield sources that don’t require pooling two assets against each other, direct lending or a single-asset yield deposit, avoid impermanent loss entirely, since there’s no pooled ratio to diverge from. For a look at yield options without LP-specific risk, see Best Stablecoin Yield in 2026.
Does yield offset impermanent loss?
It can, but not automatically or guaranteed. Trading fees earned as a liquidity provider are the primary offset to impermanent loss, and in high-volume pools held over a meaningful period, fee income can exceed the impermanent loss accrued. But this depends heavily on trading volume relative to pool size and how long the position is held; research on concentrated liquidity pools specifically has found a majority of positions ended up net unprofitable once impermanent loss was weighed against actual fee income, so it isn’t something to assume will happen by default.
Get Started
For yield options that avoid LP-specific impermanent loss risk entirely, including single-asset routing into lending and staking positions, see What Is a Yield Aggregator? and the YiFi Earn API documentation for integration details.