An option that can be exercised on discrete dates before expiration, such as the first of every month. This option...

An option which can be exercised at different times over its life. This feature makes such an option more flexible...

An option that can be exercised on discrete dates before expiration, such as the first of every month. This option...

A variant on American option, and a perpetual lookback option without a predetermined expiration date (and hence the other name: perpetual American lookback option)....