An
options investor goes long in an underlying investment (in technical jargon, the preposition "in" is omitted) by buying
call options or selling
put options on it. This is different from going long by buying the underlying or trading in futures, because a long position in an option does not necessarily mean that the holder will profit if the price of the underlying instrument goes up. Going long in an option gives the right (but not obligation) for the holder to exercise it. If the price rises to above the
strike price, the owner of a call option will probably exercise the option to buy the instrument and (at least on paper) will gain if the difference between the price at that time and the strike price is greater than the premium which he paid. With a put option on the other hand, the seller of the option will profit (on paper) if the price of the instrument goes up (so that the option is not exercised by the buyer), or falls by less than what he received as a premium. == Strategy ==