A group of options on the same underlying security with the same exercise price and maturity month.

A complete description of an option contract including the name of the underlying security, the contract size, expiration date, and strike price.

The group of options having the same strike price, expiration date, and unit of trading on the same underlying stock.

All options having the same type, underlying security, striking price and expiration date.

A number of options on the same underlying stock that have the same strike price and expiration month.

All option contracts on the same underlying stock having the same price, expiration date and unit of trading.