What is liquidity on Polymarket?

How much money sits in the order book, which decides how easily you can trade.

Updated 2 Nov 2026Glossary · MarketsAll terms

Definition

Liquidity is how much money is waiting to buy and sell in a market’s order book. More liquidity means you can trade a larger amount without moving the price.

In more detail

In a thin market, a big order eats through the best prices and fills at worse ones. The gap between the best buy and sell price, the spread, also tends to be wider.

This matters when you look at what top traders paid. In a thin market you may not be able to get anywhere near their price.

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