Chapter 2: Liquidity and Spreads

Liquidity means tradable depth

Liquidity is the ability to buy or sell without moving the market too much. A liquid market has many orders close to the current price. A thin market has fewer orders, so even modest buying or selling can create a large jump.

The spread is the visible gap

The spread is the distance between the best price someone is willing to buy at and the best price someone is willing to sell at. A tight spread is usually better for traders because less value is lost when entering or exiting. A wide spread means the market is less efficient or less active.

Slippage is what happens during execution

Slippage is the difference between the price you expect and the price you actually receive. It happens because your order consumes available liquidity. On small pools or quiet pairs, slippage can be larger than the fee itself.

Pools behave differently from order books

On decentralized exchanges, many trades happen against liquidity pools. The price changes according to the pool balance. A pool can quote a price, but the final execution depends on how much of the pool your trade uses. That is why a small test swap can look fine while a larger swap becomes expensive.

Liquidity can disappear

Market depth is not guaranteed. Liquidity providers can remove funds, order-book makers can pull quotes, and panic can widen spreads. In fast markets, the number on screen may be stale within seconds.

Why this matters for small tokens

Small tokens often live or die by liquidity. Attention can arrive before deep liquidity does. That creates opportunity, but also high risk: price can move strongly because there is not enough depth to absorb orders.

The useful habit

Look at price, spread, volume and pool size together. A green candle alone is not enough. A tradable market needs enough liquidity to enter and exit without giving away too much value to spread and slippage.