Question

In: Finance

After a detailed analysis on the risks and returns of the stock market and Stock XYZ...

  1. After a detailed analysis on the risks and returns of the stock market and Stock XYZ (current price=€50), you conclude that the price of XYZ is unlikely to change a lot during the course of the next 3 months. You decide to bet on this analysis and establish a short straddle position, by simultaneously writing 100 puts and 100 calls with maturity of 3 months and a strike price of €50. The premium you receive for writing each put/call is €2.50.

    •  What is the maximum profit of your position? What should the stock price be, in order to realize this maximum gain?

    •  Report the lower and higher bounds for XYZ’s price 3 months from now that provide you with a non-negative return on your position.

    •  Draw a profit diagram separately for your a) short position on puts, b) short position on calls, and c) total position

Solutions

Expert Solution

Cash Flow from writing 100 put/call=100*2.50*2 €   500.00
Price at expiration =S
Payoff from writing Put with Strike 50
Payoff=Min((S-50),0)
Profit/(Loss)=Payoff+2.5
Payoff from writing Call with Strike 50
Payoff=Min((50-S),0)
Profit/(Loss)=Payoff+2.5
Maximum Profit:
There will be maximum profit at S=50
Payoff =0
Profit =$500
Non Negative Return:
Lower Bound of Price at expiration=50-5 €     45.00
If Price at expiration is 45
Payoff from Put option per Straddle = €     (5.00)
Payoff from Call option per Straddle = 0.00
Net Payoff €     (5.00)
Amount received for each short straddle €       5.00
Return 0.00
Upper Bound of Price at expiration =50+5 €     55.00
Payoff from Put option per Straddle = 0.00
Payoff from Call option per Straddle = €     (5.00)
Net Payoff 0.00
Amount received for each short straddle €       5.00
Return 0.00
PROFIT DIAGRAM
100*(payoff+2.5)
Price at expiration Profit/(Loss) from Put Option Profit/(Loss) from Call Option Total Profit/(Loss) from Straddle
€           40 €        (750) €          250 €        (500)
€           42 €        (550) €          250 €        (300)
€           44 €        (350) €          250 €        (100)
€           46 €        (150) €          250 €          100
€           48 €             50 €          250 €          300
€           50 €          250 €          250 €          500
€           52 €          250 €             50 €          300
€           54 €          250 €        (150) €          100
€           56 €          250 €        (350) €        (100)
€           58 €          250 €        (550) €        (300)
€           60 €          250 €        (750) €        (500)


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