TraderjoedexTraderjoedex Liquidity Book: LFJ Bins or V1?
Liquidity Book is the automated market maker (AMM) developed by LFJ, formerly Trader Joe, for allocating liquidity across chosen price bins. Joe V1 spreads liquidity across the full price range without a range to recenter. Liquidity Book gives providers more placement control, while a manual position earns swap fees only when trades use bins containing its liquidity.
Network availability comes before a new-deposit comparison. LFJ's Monad withdrawal-only announcement, reported on September 21, 2026, said Liquidity Book on Monad was shifting to withdrawal-only mode and existing positions could be withdrawn at any time.
Liquidity placement compared
| Decision factor | Manual Liquidity Book position | Joe V1 position |
|---|---|---|
| Price coverage | Selected bins, with a chosen distribution of liquidity across them. | Liquidity distributed across the full price range. |
| Deposit composition | Inactive bins accept one token according to their position relative to the active price. The active bin can contain both tokens. | Initial liquidity supplied as equal values of the two tokens. |
| Fee participation | LP fees shared proportionally among providers in each bin used by a swap. | LP fees shared proportionally among providers in the pool used by a swap. |
| Range maintenance | The provider chooses whether to reposition liquidity when price leaves its selected bins. | No provider-selected range to recenter. |
Range width and token mix
The bin step sets the percentage price spacing between consecutive bins. Pools containing the same token pair can have different bin steps, so bin count alone does not establish a position's price coverage. Within the same pool, selecting more consecutive bins broadens price coverage. The distribution determines how much of the deposit sits at each of those prices.
Active-bin deposits also depend on the bin's token composition. Adding assets in a different proportion from its reserves can cause an implicit swap and a composition fee. A one-sided deposit into an inactive bin and an equal-value V1 deposit therefore have different asset requirements.
Manual rebalancing costs
Pool volume can increase while an out-of-range Liquidity Book position earns no new swap fees. Trading must reach liquidity in the position's bins for those bins to earn fees. Leaving a position in place preserves its existing placement, and fee earning can resume if trading returns to those bins.
Manual rebalancing involves removing liquidity from inactive bins and redeploying it around the active price. Gas costs apply, and obtaining the required token mix can involve trades with swap fees. Wider coverage can reduce the need to reposition, while concentrating funds near one price makes continued fee participation more dependent on trading staying near that allocation.
Fee collection and capital exposure
Liquidity Book has version-specific fee accounting. V2.0 keeps LP fees separate from liquidity for claiming. In V2.1, LP fees are added to position reserves and received when liquidity is withdrawn. V1 also retains LP fees in pool reserves. Automatic fee accumulation in V2.1 does not move a position's bins as the active price changes.
Withdrawals pay out the assets the position holds at that time. Swaps change the token mix, and inactive Liquidity Book bins hold only one token. Both designs carry smart contract risk and exposure to impermanent loss: the position can be worth less than holding the deposited tokens separately. Fee income can offset that difference, but it does not guarantee recovery of the original token quantities or value.
Decision checklist
- For a new deposit, check the network and pool status; the announced Monad Liquidity Book restriction is withdrawal-only.
- If avoiding range management is the priority, compare available V1 pools for the pair; token-price risk and impermanent loss still apply.
- If placement control is the priority, compare the actual Liquidity Book price range and bin step, alongside the gas and trading costs of changing the position.
- Match fee-collection expectations to the Liquidity Book version: V2.0 uses separate claims, while V2.1 holds LP fees in reserves until withdrawal.