# Other Types of Options

## Expiration & Liquidity

Options can also be categorized by their duration. Short-term options are those that expire generally within a year. Long-term options with expirations greater than a year are classified as [long-term equity anticipation securities](https://www.investopedia.com/terms/l/leaps.asp) or LEAPs. LEAPS are identical to regular options, they just have longer durations.

Options can also be distinguished by when their expiration date falls. Sets of options now expire weekly on each Friday, at the end of the month, or even on a daily basis. Index and ETF options also sometimes offer quarterly expiries.

## American vs European Options

 [American options](https://www.investopedia.com/terms/a/americanoption.asp) can be exercised at any time between the date of purchase and the expiration date. [European options](https://www.investopedia.com/terms/e/europeanoption.asp) are different from American options in that they can only be exercised at the end of their lives on their expiration date. The distinction between [American and European options](https://www.investopedia.com/articles/optioninvestor/08/american-european-options.asp) has nothing to do with geography, only with early exercise. Many options on stock indexes are of the European type. Because the right to exercise early has some value, an American option typically carries a higher premium than an otherwise identical European option. This is because the early exercise feature is desirable and commands a premium.

## Exotic Options

 There are also [exotic options](https://www.investopedia.com/terms/e/exoticoption.asp), which are exotic because there might be a variation on the payoff profiles from the plain vanilla options. Or they can become totally different products all together with "optionality" embedded in them. For example, [binary options](https://www.investopedia.com/terms/b/binary-option.asp) have a simple payoff structure that is determined if the payoff event happens regardless of the degree. Other types of exotic options include knock-out, knock-in, barrier options, lookback options, [Asian options](https://www.investopedia.com/terms/a/asianoption.asp), and [Bermudan options](https://www.investopedia.com/terms/b/bermuda.asp). Again, exotic options are typically for professional derivatives traders.