> ## Documentation Index
> Fetch the complete documentation index at: https://docs.theblockchainlibrary.com/llms.txt
> Use this file to discover all available pages before exploring further.

# ERC-4626 Tokenized Vault

> A standard ERC-4626 tokenized vault that accepts deposits, issues shares, and accrues yield from an underlying strategy.

# ERC-4626 Tokenized Vault

A standard ERC-4626 tokenized vault that accepts deposits, issues shares, and accrues yield from an underlying strategy.

A standard ERC-4626 tokenized vault that accepts deposits, issues shares, and accrues yield from an underlying strategy.

## Explanation

ERC-4626 standardizes yield-bearing vaults. Users deposit an underlying asset and receive share tokens representing their pro-rata claim. The standard interface makes vaults composable across DeFi protocols.

## Code

```solidity theme={null}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import "@openzeppelin/contracts/token/ERC20/extensions/ERC4626.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

contract YieldVault is ERC4626 {
    constructor(IERC20 asset)
        ERC4626(asset)
        ERC20(
            string.concat("Vault ", IERC20Metadata(address(asset)).name()),
            string.concat("v", IERC20Metadata(address(asset)).symbol())
        )
    {}

    // Custom strategy hook — override to route assets to a yield source
    function _deposit(address caller, address receiver, uint256 assets, uint256 shares)
        internal override
    {
        super._deposit(caller, receiver, assets, shares);
        // _investToStrategy(assets);
    }
}
```

***

**Canonical knowledge ID:** `code-example:erc-4626-tokenized-vault`