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Fill-or-Kill (FOK)

Execute entire order immediately or cancel

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What is Fill-or-Kill (FOK)?

Fill-or-Kill (FOK) An order that must be executed immediately in its entirety or canceled completely. No partial fills are allowed. Useful for multi-leg option strategies where you need all legs filled together at your desired price.

Complete definition

An order that must be executed immediately in its entirety or canceled completely. No partial fills are allowed. Useful for multi-leg option strategies where you need all legs filled together at your desired price.

ApexVol Terminal

Options analytics, live.

Chains, IV rank, expected move and dealer positioning for 5,500+ US stocks and ETFs.

  • Live chains and Greeks
  • IV rank and percentile
  • Expected move and GEX
  • Screener and strategy P&L
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