An option contract is an agreement wherein the owner has the right to buy or sell a security or an asset at a particular price on a fixed date in the future. It is called an option because the owner of the contract is not committed to carry out the obligation of the contract if he or she feels that it is disadvantageous.
There are two types of options contracts: call options and put options.
Call Options
In simple terms, call options give the owner the right to buy the underlying asset in the contract. Again, it is not an obligation.
For example, John and Tom agreed on a call options contract wherein John will buy from Tom, 100 shares (equivalent to one option) of Company A at $20 (strike price) what will expire on the third Friday of April. The current price of the share is $20.
At the expiry date (also called maturity date), the share price of Company A remains at $25. John can then exercise his right to buy the share for $20 and thus, yielding $5. Meanwhile, if the share price goes down to $22, John can still earn $2 by simply exercising his rights as stated in the contract. In whichever way, any amount higher than the strike price at the...