1. 1. You try to price the options on XYZ Corp. The current stock price of XYZ is $100/share. The risk-free rate is 5%. You project the stock price of XYZ will either be $90 or $120 in a year. Assume you can borrow or lend money at the risk-free rate. Use risk-neutral approach to price the 1-year call option on XYZ Corp with the strike price of $105. (Attention: using a wrong approach will cost you all the credits) (8 points)
2.2. You try to price the options on XYZ Corp. The current stock price of XYZ is $100/share. The risk-free rate is 5%. You project the stock price of XYZ will either be $90 or $120 in a year. Assume you can borrow or lend money at the risk-free rate. Use risk-free portfolio approach to price the 1-year put option on XYZ Corp with the strike price of $105. (Attention: using a wrong approach will cost you all the credits) (8 points)
3.3. Use put-call parity to verify the call and put option prices you just calculated in question #1 and question #2. (2 points)
4.4
Fisher Black and Myron Scholes receive the 1997 Nobel Prize in Economic Science for their work on option pricing. Although the model is theoretically elegant and beautiful, it was not widely used to price options in real life because it calls for inherent volatility which is unobservable. However, given the dependability of risk-neutral approach, people today normally use risk-neutral approach to price the options first, then they employ Black-Scholes model to estimate the implied volatility. Based on the information given in the previous questions (question #1 and #2) and the call option price you just calculated, estimate the implied volatility of XYZ Corp stock. (8 points)(You will receive zero credit if you only write down the final answer. I need to know how exactly you reach the final answer. You can present the detailed solutions. If you use excel, you need show me functions you use and the parameters you enter. If you use online tools, you need to write down the website and the parameters you enter.)
They all together because they go one with another. :)
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