KETJU Research

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Liquidity pool

Balancer V2

Not approved Liquidity pools are outside the approved structures
Issued
2026-08-14
Last confirmed
2026-08-14
Next check due
2026-11-15
Chains
Ethereum · No freeze key, Polygon PoS · Mixed control, Arbitrum One · Mixed control, Gnosis Chain · Governed, no freeze

Balancer V2 is outside the current firm shelf because its structure falls within the AMM-LP policy class. This firm policy decision is not a negative quality rating or a client trade instruction. The factual evidence on its mechanism, control, losses, and exits remains below.

The research file

Mechanism applicability

Balancer V2 documentation describes customizable AMM pools under a shared Vault. These include weighted pools with as many as eight tokens, stable pools, and changing-weight liquidity bootstrapping pools. A BPT represents pooled inventory that traders rebalance under the pool math. These facts place the product in the AMM-LP class. Custom weights and a shared custody and accounting layer do not stop relative-price rebalancing.

Current observation and control applicability

The DefiLlama protocol API read on 2026-08-15 showed about $25.4M of tracked Balancer V2 TVL across nine networks. The official V2 documentation and pool interface also remained accessible. Pools can have different factories, owners, weights, and controls, while Vault and factory deployments vary by network. We have not reviewed current pool composition, governance, contract versions, audits, migrations, or incident exposure because the shared mechanism already places the product in this class.

Exit applicability

Balancer V2 lets BPT holders remove liquidity, including during documented emergency pauses. But holders receive the pool’s then-current balances, not the asset mix they would have retained outside the AMM. Pool math, weights, available tokens, and price impact determine the realized exit. The ability to keep removing liquidity is useful in practice, but it does not remove the adverse relative-performance outcome covered by the class dossier.

Why the class rule decides

The shared v1 AMM-LP dossier governs this case. Reopen it only if Balancer ships an economically separate product without pooled multi-asset or changing-weight inventory that rebalances against the holder as prices move. That product would need its own review of governance, Vault and pool control, deployments, contracts and audits, incidents, assets, fees, liquidity, and stressed exits. A migration, new pool type, or higher TVL would not change the class verdict by itself.

Class rule

The amm lp class is outside the approved structures, so every protocol in it is not approved until the rule changes. The rule is about the structure, not an adverse finding about this protocol, and it is not a client instruction. The events that would reopen it are listed with the memo.

Sources

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

Inherited controls

The research above describes the protocol layer. Every position also inherits the asset it holds and the chain it settles on. The layer with the most administrative power sets the position’s effective control; that describes control, not quality or suitability.

ChainVerdictControlControl constraint
EthereumApproved No freeze key No sequencer, no upgrade key, no operator who can be compelled. Rule changes require social consensus.
Polygon PoSRejected Mixed control a public validator set orders transactions, but a 5-of-9 multisig can instantly upgrade staking and canonical bridge contracts, while a 5-of-8 controls custom child tokens.
Arbitrum OneApproved with limits Mixed control a single sequencer orders >99% of transactions and admin keys can upgrade bridge contracts on a ~7-day timelock.
Gnosis ChainApproved with limits Governed, no freeze the chain validator path is permissionless, but its xDAI and canonical bridge exposure adds an 8-of-15 governor multisig outside the base consensus grade.
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