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Black-Scholes model - value option

AAngelika5y ago
Hi. I have a question regarding value call option and N(d) e.g d1= 0.6 d2=0.4 N(d1)= 0.5 + 0.2257 = 0.7257 N(d2) = 0.5 - 0.1554 = 0.3446. Are my calculations of N(d2) correct? Or it should be also "+" (0.5+0.1554?) Maybe I do not understand it correctly or there is a mistake in the book.. Thank you for the help. Angelika
John MoffatJohn MoffatTutor5y ago#1
In both cases d is positive i.e. greater than zero, and so in both cases you should add 0.5. We only subtract from 0.5 if d is negative (i.e. less than zero). Have you watched my free lectures on using the Black Scholes model?
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