Down

For more information on Down, visit Britannica.com.

A form of a knock-in option whose payoff is determined by the price of the underlying asset sinking to the barrier price level.

Investopedia Says:
If the underlying asset does reach the barrier price level, the down-and-in option becomes a vanilla European call or put option. If the underlying asset price does not reach the barrier level, the option expires worthless. Investors may choose a down-and-in option rather than directly purchasing the vanilla option, as option premiums tend to be significantly lower for knock-in options.

Related Links:
An introduction to the world of options, covering everything from primary concepts to how options work and why you might use them. Options Basics Tutorial

Down was one of the six counties of Northern Ireland before the local government reorganization of 1973. Its boundary to the north is the Lagan; to the south, with the Irish Republic, Carlingford Lough. The Mountains of Mourne are in the south-west corner.

A combination of clinical signs resulting from a single cause or so commonly occurring together as to constitute a distinct clinical picture. For specific syndromes, see under the specific name, as flat puppy syndrome, cushing's syndrome.

• s. recognition — a preliminary stage in the making of a diagnosis based on the recognition of a particular combination of clinical signs.
• testicular feminizing s. — see testicular feminization syndrome.
• triple XXX s. — see xxx.
• Turner's s. — in humans; characterized by a small uterus and underdeveloped external genitalia; deafness and lowered mentality may be present.