# How Do Concrete Vaults Actually Work?

**Published by:** [Isolde Rhys](https://paragraph.com/@isolde-rhys/)
**Published on:** 2026-03-25
**URL:** https://paragraph.com/@isolde-rhys/how-do-concrete-vaults-actually-work

## Content

1⃣ Here’s a clean, engaging opening you can use: You deposit your funds into a vault.A moment later, you receive vault shares in return — a neat, tokenized representation of your position. Everything feels smooth so far.Then you look a little http://closer.You start seeing new numbers: eRate, NAV, maybe even other metrics that weren’t part of your usual DeFi experience.They’re clearly important. They’re updating over time. They seem to reflect performance.But a simple question starts to form: What do these actually mean?Are they telling you how much you’ve earned? How your position is growing? Or something more complex happening under the hood?This is the point where most users pause — not because the system isn’t working, but because it’s no longer obvious how it’s working.And that’s exactly where understanding begins. 2⃣ Let’s simplify what’s actually happening under the hood.When you deposit into a vault, you don’t just “put money in” — you receive vault shares.Think of the vault like a jar, and your deposit buys you a number of slices of that jar.The vault holds all the assets. Shares represent your ownership of it. The more you deposit, the more slices (shares) you get. Now here’s the key: Your number of shares usually doesn’t change over time.What does change is the value of each share — and that’s where eRate comes http://in.You can think of eRate as the “price per share.”At the beginning, 1 share might equal $1 As the vault earns yield, that same share might become $1.05, then $1.10, and so on So instead of giving you more shares, the system increases the value of the shares you already hold.This is how your position grows.A simple way to picture it:You own 100 shares (your slices of the jar) The jar itself gets bigger over time (through yield) Each slice becomes more valuable 👉 Your ownership stays the same 👉 But what you own becomes worth moreThat’s the core idea:Each share represents a portion of the vault, and the eRate reflects how much each portion is worth.Once you understand that, everything else starts to click. 3⃣ Now let’s demystify NAV — without the finance jargon. At its core, NAV (Net Asset Value) is simply: 👉 The total value of everything inside the vault That includes: All deposited funds All accumulated yield Any gains from strategies running in the background So if you imagine the vault as a pool: NAV = the entire pool Shares = your slice of that pool How is NAV calculated? It’s straightforward in principle: NAV = total assets held by the vault (right now) If users deposit more → NAV goes up If the vault earns yield → NAV goes up If there are losses → NAV can go down NAV is constantly updating to reflect reality How does NAV affect you? This is where it connects back to shares and eRate. The vault has a total NAV (the full pool) That value is divided across all existing shares So: 👉 Share price (eRate) = NAV ÷ total number of shares You don’t need to calculate it yourself — just understand the relationship: When NAV grows, the pool gets bigger The number of shares stays mostly the same So each share becomes more valuable Simple mental model NAV = the size of the pie Shares = how many slices the pie is cut into You own some slices If the pie gets bigger but the number of slices doesn’t change: 👉 Each slice is now worth more That’s the key takeaway: NAV is the total pool. Shares are your ownership. When NAV grows, your share becomes more valuable. Once you see it this way, the whole system becomes much easier to reason about. 4⃣ Here’s where everything clicks: time is not just a factor — it’s the engine. Vaults aren’t designed for quick in-and-out moves. They’re built to work over time. Why doesn’t value show up instantly? When you deposit into a vault, your capital doesn’t magically grow in one block. It gets deployed into strategies: Providing liquidity Earning fees Capturing yield across protocols These strategies need time to generate real returns. Think of it like planting a garden: Day 1: you plant seeds Day 2: nothing looks different Weeks later: things start growing Months later: you have something meaningful If you keep digging up the seeds to check on them, you never let them grow. Costs exist — and time smooths them out Every vault operation involves execution costs: Gas fees Rebalancing costs Strategy adjustments In the short term, these costs can eat into returns. But over time: 👉 Yield compounds 👉 Costs get diluted 👉 Net returns become meaningful Stability requires structure Good vaults are designed to protect all users, not just fast movers. That’s why you might see: Withdrawal queues Timing constraints Controlled rebalancing These aren’t limitations — they’re what prevent the system from being destabilized by short-term behavior. Short-term noise vs long-term signal In the short term: eRate might barely move NAV might fluctuate Performance can feel “flat” But zoom out: 👉 Yield accumulates 👉 NAV trends upward 👉 Share value compounds The simple truth Vaults reward patience, not timing. In the short term, they can feel slow Over time, they become powerful Because: 👉 Time allows strategies to work 👉 Time absorbs costs 👉 Time unlocks compounding If shares are your ownership, and NAV is the pool… Then time is what makes the pool grow. 5⃣ One of the biggest misconceptions is this: Vaults are not passive containers. They don’t just sit there holding your assets — they actively put them to work. What actually happens after you deposit? Your capital doesn’t stay idle in the vault. It gets: Deployed into different strategies Moved as opportunities change Rebalanced to maintain efficiency and manage risk Think of the vault less like a wallet… and more like an operator. A simple analogy: the chef Imagine you hand your ingredients to a skilled chef. They don’t leave everything raw on the table They decide what to cook They adjust heat, timing, and seasoning They react if something starts burning or needs improvement The goal isn’t just to store ingredients — it’s to turn them into something better. That’s exactly what a vault does with your capital. Constant adjustments behind the scenes Markets change. Yields shift. Risks evolve. So the vault: Allocates capital to better opportunities Pulls back from underperforming ones Rebalances positions to stay aligned with its strategy This isn’t a one-time decision — it’s continuous management. Why this matters If a vault were passive: It would miss better opportunities It couldn’t adapt to risk Returns would degrade over time Active management is what allows the vault to: Stay competitive Protect capital Improve long-term outcomes The key idea You’re not just depositing into a pool. You’re plugging into a system that is constantly working on your behalf. 👉 The vault is actively managing capital — not just holding it. And that’s what makes everything you learned earlier — shares, eRate, NAV, and time — actually come together. 6⃣ Now you can see the full picture — and more importantly, the outcome. It’s not just about depositing and earning yield. It’s about how that yield is created, managed, and compounded over time. Compounding: growth that builds on itself As the vault generates returns: Profits are kept inside the vault NAV increases eRate rises That means your existing shares become more valuable — and future gains are earned on a larger base. 👉 You’re not just earning yield 👉 You’re earning yield on top of yield Over time, this effect becomes exponential, not linear. Rebalancing: capturing better opportunities Because the vault is actively managed: Capital moves toward higher-quality opportunities Underperforming strategies are reduced or removed Risk is continuously adjusted Instead of being stuck in one position, your capital is constantly repositioned to stay efficient. 👉 You benefit from decisions you don’t have to make yourself Time: the multiplier The longer you stay: More compounding cycles occur More rebalancing decisions play out More value is accumulated inside NAV Short-term participation captures only a fraction of what the system can do. Long-term participation lets the system fully express its design. What you’re really earning At the surface level, it looks like yield. But underneath, you’re benefiting from: Continuous compounding Active allocation Ongoing optimization The key shift Users don’t just earn because capital is deployed. They earn because: 👉 That capital is being actively managed over time That’s the real outcome: Not just higher returns — but better-structured returns that improve the longer you stay. 7⃣ Let’s bring it all together into one simple mental model: Vault → a pooled capital system working as one Shares → your ownership of that pool eRate → the value of your ownership NAV → the total value of everything inside Time → what allows value to grow Management → what makes that growth more efficient If you remember nothing else, remember this: You’re not just depositing funds. You’re owning a piece of a system where: capital is pooled value is continuously generated strategies are actively managed and growth compounds over time Shares tell you what you own. eRate tells you what it’s worth. NAV tells you how big the system is. Time and management determine how far it can go. 📷 MAKE SURE TO INCLUDE: Explore Concrete at http://app.concrete.xyz 📷

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