期权费

问题如下：

In a financial scenario, consider a stock currently trading at USD28. Over the next year, the stock will either rise in value to USD40 or fall to USD20. An investor employs a strategy: they sell a call option on the stock, granting the buyer the right (but not obligation) to purchase the stock at USD28 in one year. Concurrently, the investor buys 0.6 units of the stock. Which statement concerning the value of the investor’s portfolio at the end of one year is accurate?

选项：

A.

The portfolio holds a value of USD12 regardless of the stock's movement.

B.

The portfolio holds a value of USD28 regardless of the stock's movement.

C.

The portfolio holds a value of USD16.80 if the stock's value increases and USD8.40 if it decreases.

解释：

If the stock price reaches USD40, the portfolio's value is 0.6 * 40 - 12 = USD12.

If the stock price drops to USD20, the portfolio's value is 0.6 * 20 - 0 = USD12.

In the case of a price increase to USD40, the sold call option at USD28 holds a value of USD12 for the buyer. This balances the stock's price rise. .