You connect your wallet to Concrete, click "Deposit," and confirm the transaction. Almost instantly, your dashboard updates: you now own vault shares, and you see two mysterious acronyms—eRate and NAV.

As you watch, your balance begins to tick upward. It feels like magic, but what is actually happening "under the hood"? If you’re new to DeFi vaults, this can feel confusing. Let’s break down the mechanics of Concrete vaults using simple mental models so you can understand exactly how your capital is working for you.

When you deposit into a vault, you aren't just putting money in a locker; you are joining a pooled capital system. To track how much of that pool belongs to you, the system issues vault shares.

Think of the vault as a giant jar of cookies.

• Deposit: You contribute dough to the jar.

• Vault Shares: In return, you get a receipt saying you own a specific "slice" of whatever is in that jar.

• eRate (Exchange Rate): This is the "weight" or value of your slice.

In a Concrete vault, the number of shares you hold stays the same, but the eRate increases as the vault earns profit. Because each share now represents more underlying value, your total balance grows without you having to do a single thing.

NAV stands for Net Asset Value. In plain language, this is the total value of the entire vault.

If you want to know how the "cookie jar" is doing, you look at the NAV. It is calculated by taking the total value of all the assets the vault is currently managing.

• NAV = The whole jar.

• Shares = Your piece of the jar.

As the vault generates yield, the NAV grows. Since the total number of shares doesn't change just because the vault made a profit, the value of every single share must go up. This is how the NAV directly drives your share price.

A common mistake is treating DeFi vaults like a slot machine or a day-trading desk. In reality, Concrete vaults are more like a garden.

Time is a critical ingredient for several reasons:

• Strategy Maturity: The complex strategies the vault uses take time to generate meaningful yield.

• Execution Costs: Moving capital (gas fees, rebalancing costs) is expensive. By staying in the vault longer, these costs are socialized and minimized over time.

• Automated Compounding: This is the "eighth wonder of the world." The yield you earn today starts earning its own yield tomorrow.

Time allows the vault to move past short-term market noise and capture long-term growth trends.

Concrete vaults are not passive storage boxes; they represent managed DeFi. This means there is an active system constantly working to optimize your capital.

Think of the vault as a professional kitchen:

• Onchain Capital Deployment: The "Chef" (the vault system) identifies the best ingredients (strategies) and puts your capital to work.

• Rebalancing: If one strategy becomes too risky or another becomes more profitable, the vault automatically moves capital around.

• Risk Enforcement: Just as a chef ensures food safety, Concrete uses "Hook Managers" and "Strategy Managers" to ensure capital is only deployed within safe, defined boundaries.

The vault is a living system that adjusts to market conditions so you don't have to spend your day staring at charts.

By connecting these dots, we see that the real benefit of Concrete vaults isn't just the yield—it's the management of that yield.

• Continuous Productivity: Your capital never sits idle; it is deployed continuously.

• Structured Stability: Withdrawals and deposits are structured to keep the system healthy for everyone.

• Simplified Experience: You move from manual strategy chasing to an automated, high-efficiency capital system.

If you ever get lost in the jargon, just remember this:

• Vault = The pooled jar.

• Shares = Your receipt of ownership.

• eRate = The value of each share.

• NAV = The total value of the jar.

• Time = The fuel for growth.

• Management = The optimization layer.

Explore Concrete at app.concrete.xyz

You connect your wallet to Concrete, click "Deposit," and confirm the transaction. Almost instantly, your dashboard updates: you now own vault shares, and you see two mysterious acronyms—eRate and NAV.

As you watch, your balance begins to tick upward. It feels like magic, but what is actually happening "under the hood"? If you’re new to DeFi vaults, this can feel confusing. Let’s break down the mechanics of Concrete vaults using simple mental models so you can understand exactly how your capital is working for you.

When you deposit into a vault, you aren't just putting money in a locker; you are joining a pooled capital system. To track how much of that pool belongs to you, the system issues vault shares.

Think of the vault as a giant jar of cookies.

• Deposit: You contribute dough to the jar.

• Vault Shares: In return, you get a receipt saying you own a specific "slice" of whatever is in that jar.

• eRate (Exchange Rate): This is the "weight" or value of your slice.

In a Concrete vault, the number of shares you hold stays the same, but the eRate increases as the vault earns profit. Because each share now represents more underlying value, your total balance grows without you having to do a single thing.

NAV stands for Net Asset Value. In plain language, this is the total value of the entire vault.

If you want to know how the "cookie jar" is doing, you look at the NAV. It is calculated by taking the total value of all the assets the vault is currently managing.

• NAV = The whole jar.

• Shares = Your piece of the jar.

As the vault generates yield, the NAV grows. Since the total number of shares doesn't change just because the vault made a profit, the value of every single share must go up. This is how the NAV directly drives your share price.

A common mistake is treating DeFi vaults like a slot machine or a day-trading desk. In reality, Concrete vaults are more like a garden.

Time is a critical ingredient for several reasons:

• Strategy Maturity: The complex strategies the vault uses take time to generate meaningful yield.

• Execution Costs: Moving capital (gas fees, rebalancing costs) is expensive. By staying in the vault longer, these costs are socialized and minimized over time.

• Automated Compounding: This is the "eighth wonder of the world." The yield you earn today starts earning its own yield tomorrow.

Time allows the vault to move past short-term market noise and capture long-term growth trends.

Concrete vaults are not passive storage boxes; they represent managed DeFi. This means there is an active system constantly working to optimize your capital.

Think of the vault as a professional kitchen:

• Onchain Capital Deployment: The "Chef" (the vault system) identifies the best ingredients (strategies) and puts your capital to work.

• Rebalancing: If one strategy becomes too risky or another becomes more profitable, the vault automatically moves capital around.

• Risk Enforcement: Just as a chef ensures food safety, Concrete uses "Hook Managers" and "Strategy Managers" to ensure capital is only deployed within safe, defined boundaries.

The vault is a living system that adjusts to market conditions so you don't have to spend your day staring at charts.

By connecting these dots, we see that the real benefit of Concrete vaults isn't just the yield—it's the management of that yield.

• Continuous Productivity: Your capital never sits idle; it is deployed continuously.

• Structured Stability: Withdrawals and deposits are structured to keep the system healthy for everyone.

• Simplified Experience: You move from manual strategy chasing to an automated, high-efficiency capital system.

If you ever get lost in the jargon, just remember this:

• Vault = The pooled jar.

• Shares = Your receipt of ownership.

• eRate = The value of each share.

• NAV = The total value of the jar.

• Time = The fuel for growth.

• Management = The optimization layer.

Explore Concrete at app.concrete.xyz