Liquidity is not TVL
The difference between deposited capital and what can actually be moved.
This lesson has had no expert review. It was written for this platform and against the evidence it cites; nobody has gone through it independently.
Learning objectives
- You can tell stock, depth and exit liquidity apart.
- You can estimate what position size a market can absorb.
Check your prior knowledge
Answer these for yourself before reading on. Wherever you hesitate is where this lesson pays off.
- What happens to the price when you execute a large order?
- Why is a high-TVL market not automatically deep?
- Who provides the liquidity, and why?
Core concept
Three different quantities, routinely confused
Stock is how much capital is deposited — that is what TVL measures. Depth is how much can be traded at a given price. Exit liquidity is how much can still be traded under stress, when many want the same thing at once. The three sit close together in calm markets and come apart exactly when it matters.
Concentration is a risk of its own
If most of a pool's liquidity comes from a few addresses, depth hangs on their decisions. When they leave — because an incentive program ends, say — tradability changes for everyone else with nothing having happened to the protocol. TVL does not fall because of a problem; the problem begins with the falling TVL.
Your own position is part of the market
Past a certain size you are no longer an observer of the price but its cause. A position making up a meaningful share of a pool cannot be unwound at the displayed price — and certainly not under stress. So the first question before entering is not the return but: how large may the position be for an exit to stay possible at all?
Definitions
- Market depth
- The amount tradable without material price impact.
- Slippage
- The gap between an order's expected and realized price.
- Impermanent loss in the glossary
- The difference in value between holding assets in a pool and simply holding them.
Model
TVL — deposited capital
Of that, effective at the current price — depth
Of that, remaining under stress — exit liquidity
Less your own share — what the market still absorbs
Formulas
Share of the pool
Share = planned position / pool TVL- planned position
- amount to be deployed
- pool TVL
- capital deposited in the pool
Limit: Share of stock is a rough proxy for share of depth. With concentrated liquidity, tradable depth at the current price can be materially smaller than the stock suggests.
Worked example
How much can this pool absorb?
- Pool TVL
- USD 18m
- Planned position
- USD 2m
- Internal cap
- max 2 % of a pool
2 / 18 ≈ 11.1 % of the pool. The internal 2 % cap corresponds to USD 360,000.
The planned position exceeds the cap by more than fivefold.
Reading: The return is irrelevant here: the question is settled before the APY is even looked at. Either the position gets smaller, or it is split across pools — in which case shared dependencies must then be checked.
Interactive model
The worked example, with movable figures. Estimate first what happens — then check.
Realizable value at exit
Market decline and price impact act one after the other — and price impact grows with the share of the pool.
Estimate first, then check
Before you move the slider: how large may a position be in a pool with USD 18m TVL under a 2 % cap? And what is the price impact of exiting the planned USD 2m if only half the pool sits on the other side?
The starting values are the worked example's own figures — change one input at a time.
Share of the pool: 11.1%. Price impact at exit: 18.2%. Realizable value: $1,636,364.
What the model does not show: Price impact follows the constant-product approximation against half the TVL. Concentrated liquidity, fees and liquidity outside the pool move the figure in both directions; the approximation shows the order of magnitude, not the price.
Retrieval
Exercise on real data
Find two pools with a similar APY but distinctly different TVL. For a hypothetical USD 500,000 position, compute the share of each pool.
Compare TVL of two pools with the same APY →Application
Your organization sets a cap on the share of any single pool. Which two arguments support that rule — and what risk arises from circumventing it by splitting across many pools?
Related case studies
Institutional reading
- Asset management
- How many days of trading volume does the planned position represent?
- Bank
- What haircut would the position carry in the liquidity risk report?
- Insurance
- How quickly could the position be unwound in a claims event?
Metrics in this lesson
Key takeaways
- Stock, depth and exit liquidity are three quantities — TVL measures only the first.
- Past a certain size, your own position is part of the price.
- Splitting across pools diversifies only where those pools share no dependencies.
Evidence
- EVD-2026-0008
DeFiLlama — DeFiLlama yields endpoint (/pools)