Extra yield, without doing the work.

Boost uses the Aave lending market to dramatically increase your staking position with one click, taking advantage of the difference between the Vault staking APY and the ETH borrow rate.

Boost APY (Past week) unknown

Leverage unknown

Strategy assets unknown

1 Deposit osETH Boost receives your osETH and pairs it with flash-loaned osETH.

2 ETH is borrowed Boost uses total osETH to borrow ETH on Aave.

3 ETH is staked Boost stakes borrowed ETH and mints osETH to return the flash loan.

4 You keep the spread You keep the Vault rewards from extra staked ETH, less borrowing costs and the osETH fee.

Example

Boost economics

Assuming 1,000 osETH deposited into Boost

Timeline

Strategy dynamics over time

Before entry Capacity on Aave matters.

The amount of osETH that can be deposited into Boost depends on the headroom remaining before the osETH supply cap on Aave is filled.

Entry queue Initial APY can be diluted.

Staked ETH deposits take time to activate on the Beacon Chain, which can reduce the Vault's APY (and, therefore, Boost APY) for the duration of the entry queue if the deposit is too large relative to existing Vault TVL.

Active Boost The spread drives performance.

After the entry queue clears, Boost APY follows Vault APY, less osETH fees and Aave ETH borrow APY.

Exit Unboosting repays the borrow with delay.

Unboosting triggers validator exits, which take time to be processed by Ethereum's exit queue and can dilute Vault APY during the sweep delay.

External drivers

What drives Boost APY

Entry queue Longer activation delays reduce early performance.

If more ETH is waiting to join the validator set, newly boosted ETH takes longer to become productive. That can lower the first stretch of returns.

Exit queue Longer exits keep the position exposed for longer.

The exit queue affects how quickly a Boost position can be unwound, and Boost APY may be reduced during the sweep delay.

Aave ETH borrow APY Higher borrow rates reduce the spread.

If ETH becomes expensive to borrow, Boost can earn less or even turn negative until the rate normalizes.

Network balance More ETH staked network-wide can lower staking APY.

Consensus rewards are shared across active validators, so a larger active balance generally reduces the base reward rate.

Vault size A large Boost deposit can dilute a small Vault.

If added ETH is large relative to current Vault TVL, rewards will be spread over more assets before all added ETH is earning, diluting Boost APY while in the entry queue.

Aave capacity Supply caps can limit new Boost deposits.

When Aave has little remaining osETH capacity, new Boost openings can be constrained even if existing Boost positions continue.

Guardrails