# Home

## This page has been deprecated. V1 documentation is partially maintained [here](https://docs.balancer.fi/v/v1/index)

## Home

*Looking for the V2 docs? -->* [*https://docs.balancer.fi/*](https://docs.balancer.fi/)

**Balancer** is an automated **portfolio manager**, **liquidity provider**, and **price sensor**.

Balancer turns the concept of an index fund on its head: instead of a paying fees to portfolio managers to rebalance your portfolio, you collect fees from traders, who rebalance your portfolio by following arbitrage opportunities.

Balancer is based on an [N-dimensional invariant surface](https://balancer.finance/whitepaper/) which is a generalization of the constant product formula described by Vitalik Buterin and proven viable by the popular Uniswap dapp.