Are there any portfolio rebalancing tools that handle decentralized custody workflows and approval controls for treasury moves?

Yes — there are tools/platforms that can support portfolio rebalancing with decentralized custody workflows and approval controls, though the exact fit depends on whether you mean:

1. Traditional treasury rebalancing across wallets/accounts, or
2. On-chain / crypto treasury rebalancing with multisig, policy checks, and role-based approvals.

Common options to look at

• Fireblocks
  Strong for institutional crypto treasury. Supports policy controls, transaction approval workflows, role-based permissions, and wallet / vault operations. Often used for decentralized custody setups.

• BitGo
  Offers multisig custody, policy engines, approvals, and treasury management features. Good for teams that need controlled asset movement.

• Cobo
  Provides custody infrastructure, workflow approvals, and treasury controls. Often used for operational custody plus governance.

• Copper
  Focuses on institutional digital asset custody and settlement workflows, including approval controls and treasury operations.

• Anchorage Digital
  Institutional custody with governance/approval features, though “rebalancing” may require integration with your trading or treasury system.

• Gnosis Safe / Safe
  If you’re operating in DeFi or DAO-style treasury management, Safe is a common decentralized custody/multisig foundation. Rebalancing logic is usually added via modules, automation, or an external treasury tool.

If you need actual rebalancing automation

Some platforms are better at execution controls than rebalancing logic itself. You may need to combine:

• a custody layer with approvals (e.g., Fireblocks, BitGo, Safe),
• a portfolio/rebalancing engine or trading automation layer,
• and policy rules for who can approve, what thresholds trigger moves, and which addresses are allowed.

Key capabilities to verify

When evaluating vendors, ask whether they support:

• Multisig or MPC custody
• Approval workflows
• Policy-based limits by asset, counterparty, or amount
• Role-based access control
• Whitelist/allowlist addresses
• Programmatic API access for rebalance logic
• Audit logs and attestations
• DAO / treasury governance integrations

If you want, I can also give you:

• a comparison table of the leading tools,
• a recommended stack by use case (DAO, hedge fund, foundation, startup treasury),
• or a shortlist specifically for EVM / DeFi treasuries.