Liquidity: how easily an asset can be traded

Why Liquidity Matters More Than Price

Liquidity describes how quickly and cheaply an asset can be converted to cash—or to another asset—without significantly moving its price. In a liquid market, you can execute a large trade in seconds and the price barely budges. In an illiquid market, even a modest order can crater or rocket the price, and you may not find a buyer at all.

For cryptocurrencies, liquidity comes from two main sources. On centralized exchanges, it is the depth of the order book—how many buy and sell orders are stacked at each price level. On decentralized exchanges, it is the size of the liquidity pools backing each trading pair.

Liquidity affects almost everything: the slippage you face, the size of the bid-ask spread, and how vulnerable a token's price is to manipulation. Bitcoin and Ethereum are the deepest crypto markets, with billions of dollars changing hands daily. Small-cap and newly launched tokens are typically very illiquid, which is why entering a position is easy but exiting one—especially in a falling market—can be brutal.