风险声明：差价合约（CFD）是属于复杂的投资产品，因杠杆而存在快速亏损的高度风险。
交易前您应衡量是否了解差价合约以及是否能够承担发生亏损的高风险。
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Kiosk
A small physical location where currency exchange services are provided.
Kiwi
Slang term for the New Zealand dollar (NZD).
Knock-in barrier option
A type of option that only becomes active when the underlying asset reaches a certain price level.
Knock-in option
A type of option that becomes active only when a certain price level is reached.
Knock-in options
A knock-in is a barrier option that does not exist as a live contract until the underlying price touches a predetermined level called the barrier. Until that trigger is hit, the buyer holds nothing that can be exercised. Cross the barrier, and a standard option springs into life. Two flavours dominate: up-and-in, where the barrier sits above the current price, and down-and-in, where it sits below. Because there is a real chance the barrier is never reached and the contract expires worthless without ever activating, knock-ins can cost less than the equivalent vanilla option. That discount is the whole attraction. A trader who believes a move will only matter after a certain threshold breaks can pay for exposure to precisely that scenario and nothing else. Banks build these into structured products constantly, tuning barriers to shave premium. Example: A treasurer wants dollar-yen protection, but only if the pair first weakens to 150. She could buy a down-and-in put with the barrier at 150, paying less than she would for a plain put, and accepting that if yen never gets there she has effectively bought nothing.
Knock-out option
A type of option that becomes invalid when a certain price level is reached.
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