I read an article this morning about Korean businesses recently losing over 60 billion won on kick-in kick-out (KIKO) currency options. I can't find any details about what those are. Anyone care to enlighten?
These are bog standard exotic (read anything not vanilla Euro or American) Options, commonly referred to as Barrier Options. A KIKO is simply a double barrier option. Crossing of a barrier is an event that knocks in (activates) an inactive option, or knocks-out (de-activates) an active option. These are more common in FX. Double barrier options are usually priced using semi-analytic or pure numerical techniques. Also, google is your friend: https://gm.bankofny.com/Derivatives/ProductNotes/Currency.aspx?RowIndex=8