Not all options are created equally. There are different types of expiration styles as well as expiration time cycles.
Options contracts come with an expiration date, at which point the owner has the right to buy the underlying security if a call or sell it if a put. With American style options, the owner of the contract also has the right to exercise at any time prior to the expiration date.
Settlement Price American vs. For instance, owners of American-style options may exercise at any time before the option expires. American index options cease trading at the close of business on the third Friday of the expiration month, with a few exceptions. After-hours trades do not count when determining the settlement price. In fact, the settlement price is not published until hours after the market opens.
This additional flexibility is an obvious advantage to the owner of an American style contract. European Style Options The owners of European style options contracts are not afforded the same flexibility as with American style contracts.
If you own a European option styles contract then you have the right option styles buy or sell the underlying asset on which the contract is based only on the expiration date and not before.
Regular Options These are based on the standardized expiration cycles that options contracts are listed under. When purchasing a contract of this type, you will have the choice of at least four different expiration months to choose from.
The reasons for these expiration cycles existing in the way they do is due to restrictions put in place when options were first introduced about when they could be traded. Expiration cycles can get somewhat complicated, but all you really need to understand is that you will be able to choose your preferred expiration date from a selection of at least four different months.
Weekly Options Also known as weeklies, these were introduced in They are currently only available on a limited number of underlying securities, including some of the major indices, but their popularity is increasing. The basic principle of weeklies is the same as regular options, but they just have a much shorter expiration period. Quarterly Options Also referred to as quarterlies, these are listed on the exchanges with expirations for the nearest four quarters plus the final quarter of the following year.
Unlike regular contracts which expire on the third Friday of the expiration month, quarterlies expire on the last day of the expiration month. LEAPS always expire in January but can be bought with expiration dates for the following option styles years.
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