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© 2026 Gemini Space Station, Inc.

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Client-Bound Messages

Order Cancel Reasons

Reasons orders are canceled include, but are not limited to:

  • MakerOrCancelWouldTake - A maker-or-cancel order would fill immediately
  • ImmediateOrCancelWouldPost - An immediate-or-cancel order would not fill immediately
  • FillOrKillWouldNotFill - A fill-or-kill order would not fully fill immediately
  • ExceedsPriceLimits - Exceeds price limits imposed by Gemini
  • SelfCrossPrevented - Crosses a pre-existing open order
  • MarketOrderSweptBook - Unable to completely fill the market order
Last modified on April 17, 2026
Order Cancel RejectNew Order Single