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A stock is currently priced at $75.00. The risk free rate is 4.5% per annum with continuous compounding. Use a one-time...

A stock is currently priced at $75.00. The risk free rate is 4.5% per annum with continuous compounding. Use a one-time step Cox-Ross-Rubenstein model for the price of the stock in 13 months assuming the stock has annual volatility of 24.9%. Compute the price of a 13 month call option on the stock with strike $80.00.

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Answer #1

und dze-ovim

the value of call option at previous node ;

Binomial Value = [p x Option up + (1 - p) x Option down] x exp(-- * At)

option value on Up or Down in case of call : Max (Sn-K,0)

from given data :

Stock Price 75
Strike Price 80
Volatility 24.90%
Risk free Rate 4.50%
time 13 month 1.083(year)
U 1.296011 2.72^(24.9%*((1.083)^0.5))
d 0.771598 2.72^-(24.9%*((1.083)^0.5))
P 0.530834 (2.72^(0.045*1.083)-0.771598)/(1.296011-0.771598)
1-P 0.469166 1-0.530834
call value
option up 97.20084 75*1.296011 17.20084386 MAX(97.20084-80,0)
option down 57.86987 75*0.771598 0 MAX(57.86987-80,0)
binomial value of call option 8.696202 (0.530834*17.20+0.469166*0)/(2.72^(0.045*1.083))
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