For example, an investor who owns a stock S that is trading at $30 sells a call option on S with a strike price of $33 and simultaneously also sells a put option on S with a strike price of $28, with both the call and the put expiring in three months.
Covered combinations are used by investors who are moderately bullish on a stock and are comfortable with doubling their position in the event of a price decline. It is also used by investors who are looking for additional levels of pmium income to enhance their rate of return on a stock or portfolio.