Balancer is a programmable AMM that pioneered weighted pools and the singleton-Vault architecture. V3 (Dec 2024) ships a flexible Vault with hooks for custom pool logic.
How Balancer generalizes x·y=k to N assets with custom weights
A Balancer pool can hold its value in any target ratio. The bars show each token's share of pool value — drag the weight to reshape the pool.
Both weights always sum to 100%. The pool keeps each token's value at its target share, rebalancing via swaps.
Unlike a fixed 50/50 AMM, a weighted pool lets you build an on-chain index (e.g. 80/20) or a stable basket. The invariant ∏ Bᵢ^wᵢ = k holds the weights in place.
Live signals detected by Sentinel monitors across all five risk classes.
See each alert's affected component, root-cause analysis, and recommended action. Pro members get the full risk breakdown for every protocol.
AMMs with fixed 50/50 token weights (Uniswap V2) limit portfolio strategies, index funds, and stable-asset pools. Per-pool deployment fragments capital.
Balancer's weighted-pool AMM supports arbitrary token weights (e.g. 80/20, 33/33/33), composable stable pools, and a singleton Vault that pools liquidity across all pool types for atomic multi-hop swaps.
Pioneered the singleton-Vault architecture later adopted by Uniswap V4. V3 hooks enable custom pool behavior (limit orders, MEV capture, stable surge) without forking the protocol. Deeply integrated as Aave's boosted-pool infrastructure.
Balancer is a DEX protocol operating on Ethereum, Arbitrum, Base, Polygon, Optimism, Avalanche, Gnosis, Monad, Hyperliquid. Balancer is a programmable AMM that pioneered weighted pools and the singleton-Vault architecture. V3 (Dec 2024) ships a flexible Vault with hooks for custom pool logic.
DeFi Sentinel rates Balancer A with a safety score of 78/100, indicating low-to-moderate risk. The score reflects five risk dimensions: smart contract & technical risk, economic design & market risk, governance & centralization, sustainability & competitive position, and reputation & social trust. Balancer has 7 audits on record. As with all DeFi protocols, residual risk remains and users should review the full risk breakdown before depositing.
Balancer has a DeFi Sentinel safety score of 78/100 (rating A), last updated May 21, 2026. The score is computed across smart contract & technical risk (30%), economic design & market risk (25%), governance & centralization (20%), sustainability & competitive position (15%), and reputation & social trust (10%).
Balancer is deployed on Ethereum, Arbitrum, Base, Polygon, Optimism, Avalanche, Gnosis, Monad, Hyperliquid.
Yes. Balancer has 7 audit reports on record from firms including OpenZeppelin, Trail of Bits, Certora. Audit reports and dates are linked under the Resources tab on this page.
