Option terms Call, Put, Underlying
Underlying Asset
The underlying asset is the financial instrument upon which an option is based. Common underlying assets include:
- Stocks
- Exchange-traded funds (ETFs)
- Indexes
- Futures contracts
The value of an option is directly influenced by changes in the price of the underlying asset.
Call Option
A call option gives the buyer the right (but not the obligation) to buy the underlying asset at the strike price before or at expiration.
- Call Buyer: Has the right to purchase the underlying asset
- Call Seller (Writer): Has the obligation to sell the underlying asset if the option is exercised or assigned
Put Option
A put option gives the buyer the right (but not the obligation) to sell the underlying asset at the strike price before or at expiration.
- Put Buyer: Has the right to sell the underlying asset
- Put Seller (Writer): Has the obligation to buy the underlying asset if the option is exercised or assigned