# Balancer Managed Pool The Managed Pool primitive was chosen as it provides flexibility in defining weight changes while being able to scale to support a large number of assets (50). Please see [Security](/v1-archive/contracts/security.md) for associated risks. The Balancer Managed pool is deployed by the Aera Vault in the `constructor` function. The following additional constraints are applied to the pool: * Tokens are hardcoded upon deployment and assets cannot be added/removed * The Balancer Pool Token shares cannot be traded and are owned exclusively by the Aera Vault * No liquidity is ever removed or added, any withdrawals/deposits are handled by rebinding the vault. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.aera.finance/v1-archive/concepts/aera-vault/balancer-managed-pool.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.