Fill or Kill (FOK)

An order type that must be executed in its entirety immediately or not at all.

PredCopy uses FOK orders to ensure copy trades either fully execute or are cancelled, avoiding partial fills.

See it in action

Will Joe Biden get Coronavirus before the election?

Yes 0¢Vol: $32.3k

Will Airbnb begin publicly trading before Jan 1, 2021?

Yes 0¢Vol: $89.7k

Will a new Supreme Court Justice be confirmed before Nov 3rd, 2020?

Yes 0¢Vol: $43.3k

Related terms

CLOB (Central Limit Order Book)

An order book that matches buyers and sellers based on price and time priority. Polymarket uses a CLOB powered by the CTF Exchange smart contract for all its markets.

Position

The number of outcome tokens a trader holds in a particular market. A position represents a bet on a specific outcome (e.g., "Yes" on "Will X happen?").

Slippage

The difference between the expected price of a trade and the actual price at which it executes. Slippage increases in low-liquidity markets or during high-volatility events.

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