When you buy an option, your plan it to earn a profit by selling it at
a price that's higher than you paid. in that respect an option is no
different from shares of stock.
But options are different and when you trade options, it's important to
understand how to get out of any position.
When you own an option you have three choices
1) Sell the option. You will have a profit or loss
2) Exercise the option. This converts your right to buy or sell
shares - into buying or selling those shares
In general, you should not plan to exercise. There
is seldom a good reason for doing so.
3) Allow it to expire worthless
This is not the preferred choice, but sometimes an
option cannot be sold (there is no bid)
If the option has no value, you do NOT want to exercise
If you still own the option when expiration day arrives, if you do
nothing, it becomes worthless
When you sell an option you have fewer choices
1) You can exit the trade by repurchasing the option
sold earlier. You will have a profit or loss
2) You can wait. Only two things can happen
a) The option expires worthless when it is not
exercised by its owner
b) You are assigned an exercise notice and must honor the conditions of
the contract
i. If it is a call option, you sell 100 shares at
the strike price (the call owner buys your stock)
ii. If it is put option, you buy 100 shares at the strike price (the
put owner sells stock to you)