A stock sells for $60 and the risk free rate of interest is 5 percent. | ||||||
A call and a put on this stock expire in one year and both options have an exercise price of $55. | ||||||
How would you trade to create a synthetic call option? | ||||||
If the put sells for $3, how much is the call option worth ? Assume continuous compounding? |
As per put-call parity,
Cash investment + Call = Stock + Put
Therefore to create synthetic call option, I would buy borrow funds and buy stock and buy put option
Amount to be borrowed = PV of strike price
As per put call parity,
Cash investment + call premium = stock price + put premium
{Note that strike of call and put option should be same and cash investment should be present value of strike of call or put}
Cash investment + call premium = stock price + put premium
55 / e5% + call premium = 60 + 3
Call price = 63 - 57.82 = $ 5.18
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