Classic vs. Concentrated Pools: Where Liquidity Sits

Classic pools spread liquidity across the full price curve, while concentrated pools place it in price bands chosen by liquidity providers. Uniswap’s v2 and v3 documentation describe these as different ways to supply liquidity to an automated market maker: one covers a broad range, and the other focuses capital where its provider expects trades to happen.

That choice changes the pool’s available depth at different prices, the assets a position holds as prices move, and how much attention it may need. Pool design is separate from the steps for making a trade; for that walkthrough, read how a Blackhole swap works.

How does a classic pool distribute liquidity?

In the classic constant-product model described in Uniswap’s v2 documentation, the pool balances two tokens under the relationship x × y = k. As a trader removes one token, the pool’s pricing formula requires more of the other token for each additional unit, so the price changes with the trade.

Liquidity providers add both tokens in proportion to the pool’s current reserves, and their share represents a portion of those reserves. Uniswap’s liquidity overview describes full-range liquidity as covering prices from zero to infinity; in practice, that means a position can remain available across a wide range of prices without its provider setting a lower and upper bound.

The trade-off is that some capital sits at prices far from the current market price, where it may contribute little to near-term trading depth. For someone who wants broad exposure and does not want to keep adjusting a price range, that simplicity can be useful, though it does not remove the risk of holding a changing mix of tokens.

How does concentrated liquidity change the pool?

Uniswap’s v3 documentation lets each provider set a minimum and maximum price for a position. Within that band, the position supplies liquidity to trades; as the market price moves, the position’s token balance shifts, and once the price moves outside the band, the position stops being active for trades there.

A narrower band can put more of the provider’s capital to work near the current price, increasing the depth available in that interval. It also concentrates exposure: the position can end up holding only one of the two tokens outside its range, and it does not earn trading fees from swaps while inactive.

Fees depend on trading activity and the provider’s share of active liquidity at the time of each swap, as Uniswap’s v3 documentation explains. A narrow range can therefore collect a larger share of fees while active, but it does not guarantee a better return; moving the range also takes attention and may involve transaction costs.

Which pool type should a liquidity provider choose?

The useful comparison is not simply “more efficient” against “less efficient.” Concentrated liquidity can provide more depth per unit of capital inside a selected band, while classic full-range liquidity spreads that capital across a wider set of prices.

• Choose broad coverage if you want a position that stays active across a wide range without setting price bounds.
• Choose a wider concentrated band if you want some control over where liquidity sits but expect a less demanding position than a tight band.
• Choose a narrow band only if you can monitor the market and accept that the position may become inactive when price moves away.

For most providers who cannot regularly check and adjust a position, broad coverage or a wider band is the more practical choice. Before depositing, compare the range with the prices at which you are willing to hold each token, and account for the possibility that the market will leave it.

The next decision is the price range and how often to review it. Future price movement, trading volume, and fee income remain unknown, so no pool design can settle those outcomes in advance.