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Impermanent loss vs divergence loss: same thing, better name

There is no difference between impermanent loss and divergence loss — they are two names for the same thing. But the second name is the better one, and understanding why fixes two of the most common misconceptions liquidity providers have: that the loss is about time, and that it always reverses. Neither is true.

One phenomenon, two names

Both terms describe the same event: when you deposit two tokens into an automated market maker (AMM) and their price ratio later changes, the value of your liquidity position ends up lower than if you had simply held the two tokens in your wallet. The AMM rebalances your holdings as the price moves, so you end up with more of the token that fell and less of the token that rose.

"Impermanent loss" is the older and more common label. "Divergence loss" is used by protocols such as Orca, which states it uses the term "because it describes what causes the difference: the prices of the deposited assets diverge from their original ratio" (Orca documentation).

Why "divergence loss" is the more accurate term

The formula tells you why. For a 50/50 constant-product pool the loss is:

IL = 2·√r / (1 + r) − 1

where r is the new price ratio divided by the ratio at deposit (derivation: Auditless, 2020). Notice the single input: r, the amount of divergence in the price ratio. Time does not appear anywhere. A pool held for two years with no price change has zero loss; a pool held for an hour through a 3× move has ~13.4%. The loss is a function of how far prices diverged — which is exactly what "divergence loss" names, and what "impermanent loss" obscures.

TermWhat it emphasizesMisconception it invites
Impermanent lossThat the loss can reverseThat it always reverses / that it's temporary
Divergence lossThe cause: price-ratio divergence(fewer — it points at the mechanism)

The "impermanent" part is a promise the market doesn't make

The loss is only impermanent while two conditions hold: you're still in the pool, and the price ratio still has a chance to return to your entry. If the ratio comes back to where you deposited, the loss versus holding shrinks toward zero in a simplified model — that's the grain of truth in "impermanent." But the moment you withdraw at a diverged ratio, the loss is realized and permanent. And markets are under no obligation to re-converge; a pair that permanently re-rates leaves you with a permanent loss that was only ever called "impermanent."

The safest mental model: treat it as divergence loss — a cost that grows with how far your two tokens' prices pull apart, becomes permanent when you exit, and is offset only by the fees you earned along the way. "Impermanent" is a hope, not a guarantee.

It's measured against holding, not your deposit

One more clarification the name hides: divergence loss compares your position to holding the same tokens, not to your original dollar deposit. So a position can be up in dollar terms and still show divergence loss, because holding would have been up more. It is an opportunity cost versus HODL — which is why the honest way to judge a pool is LP-return-vs-HODL net of fees, not the raw loss percentage.

Put a number on the divergence

The free TraderBear impermanent loss calculator takes your deposit and current prices (or a Solana pool address) and shows the divergence loss, the LP-vs-HODL comparison, and net APR — plus a 5,000-path Monte-Carlo distribution so you see the range of outcomes, not one point. Browser-only, no signup.

FAQ

Are impermanent loss and divergence loss the same?

Yes — identical phenomenon, two names. "Divergence loss" (used by Orca and others) names the cause: the two tokens' prices diverging from their deposit ratio.

Why is "divergence loss" more accurate?

Because the loss depends on price divergence, not time, and isn't reliably temporary. "Impermanent" wrongly implies it always reverses.

When does it become permanent?

When you withdraw at a price ratio different from deposit. Until then it can still reverse if prices re-converge — but that's not guaranteed.

Does divergence loss mean I lost money?

Not necessarily — it's measured against holding, not your deposit. You can be up in dollars and still trail HODL. Fees can offset or exceed it.

See your divergence loss as a number.

Enter prices or a Solana pool address; get IL, LP-vs-HODL, net APR, and a Monte-Carlo distribution. Free, browser-only, no signup.

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