Definition of 'Writing An Option'
The expression "writing an option" refers to the act of selling an option. An option is the right, but not the obligation, to buy or sell a particular trading instrument at a specified price, on or before its expiration.
When someone writes (or "sells") an option, he or she must deliver to the buyer a specified number of shares if the option is excercised The writer has an obligation to perform a duty while the buyer has the option to take action. There are two general types of option writing: covered and naked.