Knock-In Option A latent option contract that begins to function as a normal option ("knocks in") only once a certain price level is reached before expiration. Investopedia Says: Technically, this type of contract is not an option until a certain price is met, so if the price is never reached it is as if the contract never existed. Knock-ins are a type of barrier option that may be either down-and-in option or an up-and-in option. Related Terms: Barrier Option Down-and-In Option Knock-out Option One-Touch Option Option Plain Vanilla Up-and-In Option Vanilla Option |