立即全數成交否則取消
fill or kill (FOK)
訂單到達交易廳?時，隨即安現價或其特定價格即時買賣的委辦單，若不成交則立即立即失效註冊。此種訂單常用於客戶想要以某一特定價格買入一大筆特定的股票時。
When the order arrives trading hall, then security at a specific price or price traded commissioned single instant, if not immediately then immediately traded fail to register. Such orders often used in customer wants to buy a large amount of a particular price at a particular stock.