A call option and a put option are two types of options commonly used in financial markets. The key difference between them lies in the right they each offer to the buyer: a call option gives the buyer the right (but not the obligation) to buy an underlying asset at a specified price (the strike price), while a put option gives the buyer the right (but not the obligation) to sell an underlying asset at a specified price (the strike price).
In more detail, a call option grants the buyer the right to purchase the underlying asset at the specified strike price before the option expires. The seller of the call option (also known as the writer) agrees to sell the asset to the buyer at the strike price if the buyer chooses to exercise their right. The buyer of a call option hopes that the price of the underlying asset will increase above the strike price so that they can profit from the trade.
On the other hand, a put option gives the buyer the right to sell an underlying asset at the specified strike price before the option expires. The writer of the put option agrees to buy the asset from the buyer at the strike price if the buyer chooses to exercise their right. The buyer of the put option hopes that the price of the underlying asset will decrease below the strike price so that they can profit from the trade.
To illustrate, let’s consider an example where an investor buys a call option on the stock of company ABC with a strike price of $50 and an expiration date in one month. If the current market price of ABC stock is $45 and it increases to $55 before the expiration date, the investor can exercise their right to buy the stock for $50 and then sell it at the current market price of $55, making a profit of $5 per share. Meanwhile, if the stock price remains below $50, the investor does not have to exercise the option and simply lets it expire, losing only the price of the option premium.
For a further example, consider an investor who buys a put option on the same stock of company ABC with a strike price of $50 and one-month expiry. If the stock price declines to $45 before the expiry, the investor can then exercise the put option to sell the stock at the agreed strike price of $50, making a profit of $5 per share. However, if the stock price rises above $50, the investor will not exercise the option and simply let it expire, losing only the price of the option premium.
In summary, call and put options offer investors the opportunity to profit from potential price movements in the underlying assets, while also offering downside protection in the form of limiting potential losses to the premium paid for the option.