Meridian AMM

Rejected venues wait the longest for re-review; a rejection has to earn another look before the scheduled date.

Meridian AMM is the Movement ecosystem’s liquidity venue, offering weighted, stable and concentrated-liquidity pools. LP assets facilitate swaps and flash loans, and official documentation acknowledges impermanent-loss trade-offs in weighted pools. The 2026-08-16 survey measured about $0.25M on Movement. We reject the underlying market-making inventory under the version-1 AMM-LP dossier; alternative invariants and capital-efficient ranges change the loss profile, not the fundamental exposure.

Kill criteria: the events that revoke this verdict
• Ships a product line without impermanent-loss exposure that merits its own review

The research file

Mechanism applicability

Meridian supports weighted pools using a constant weighted-product invariant, stable pools and concentrated liquidity. Providers contribute assets that traders swap against and receive pool economics including trading and flash-loan fees. Weighting or concentration can alter capital efficiency and the degree of divergence loss but leaves the assets serving as market-making inventory.

Control and exit applicability

Pool type, token set, weights and fee parameters define the provider’s claim, while Move contracts execute swaps and permit one-transaction flash loans against available pool assets. LP value remains contingent on token quality, pool balances, contract correctness and withdrawal liquidity; no Meridian document establishes a guaranteed return of the contributed token mix or principal value.

Current observation and perimeter

The DefiLlama API read on 2026-08-16 classified Meridian AMM as a DEX and reported approximately $0.25M entirely on Movement. Current Meridian documentation presents the AMM alongside a separate liquid-staking product. This application is limited to measured AMM liquidity and does not treat Meridian LST exposure as the same claim.

Why the class rule decides

Weighted, stable and concentrated pools all expose client capital to an inventory whose composition changes as counterparties trade. Meridian itself notes that weighting reduces rather than eliminates impermanent loss. The version-1 AMM-LP dossier therefore controls; reopen only for an economically separate product without pooled trading inventory.

Sources

The claims above trace to these. Where a number could not be independently verified, the thesis says so.

• Meridian Docs — protocol and product perimeter · primary · accessed 2026-08-16
  Supports: Movement ecosystem, DEX, separate LST product, liquidity hub
• Meridian Docs — AMM pool types · primary · accessed 2026-08-16
  Supports: weighted pools, stable pools, concentrated liquidity
• Meridian Docs — weighted-pool mechanics · primary · accessed 2026-08-16
  Supports: constant weighted product, token weights, swap fees, impermanent loss
• Meridian Docs — flash-loan use of pool liquidity · primary · accessed 2026-08-16
  Supports: available pool assets, flash-loan fee, Move contracts, atomic repayment
• DefiLlama — Meridian AMM survey record · secondary · accessed 2026-08-16
  Supports: current TVL, Movement perimeter, DEX category

Inherited controls

The verdict above grades the protocol layer. Every position also inherits the asset it holds and the chain it settles on. The least safe layer sets the position’s grade, and the position table names which one that is.