What Is Vault?
A DeFi vault is an automated smart contract that implements a specific yield-generating strategy. Users deposit assets into the vault, which automatically deploys them across one or more protocols to optimize returns. Vaults handle the complexity of yield farming — auto-compounding, rebalancing, and gas optimization — so users don't have to manage positions manually.
How Vault Works
Yearn Finance pioneered the vault concept with its yVaults: users deposit stablecoins or tokens, and Yearn's strategists deploy automated strategies that compound yields. Vaults range from simple (deposit USDC, earn lending interest) to complex (multi-protocol leveraged strategies involving multiple swaps, borrows, and staking operations). Management fees typically range from 0-2% with performance fees of 10-20%.
Why It Matters for Traders
Vaults simplify DeFi participation but add smart contract risk — your assets are managed by code that interacts with multiple protocols, each of which could have vulnerabilities. When evaluating vaults: check the strategy's complexity (simpler is safer), audit status, TVL (more capital = more battle-tested), historical performance, and fee structure. Vaults are the DeFi equivalent of managed funds.
