A
ActStudent
Member
April 2005
Q6. (ii)
The answer says the price of an option is usually geared, so that a change in the share price leads to a higher percentage change in the option price.
Are we talking about the delta here? According to the Black-Scholes formula, delta = phi(d_1), which is less that 1, isn't it? Is that contradictory to what the answer says?
A separate question:
Q10. (i)
The parameters determining the share price after an up-jump and down-jump should be determined by considering the standard deviation of the log price.
Why is this interpreted to mean u = exp(sigma) and d = u^-1 ?
Any help will be appreciated. Thanks!
Q6. (ii)
The answer says the price of an option is usually geared, so that a change in the share price leads to a higher percentage change in the option price.
Are we talking about the delta here? According to the Black-Scholes formula, delta = phi(d_1), which is less that 1, isn't it? Is that contradictory to what the answer says?
A separate question:
Q10. (i)
The parameters determining the share price after an up-jump and down-jump should be determined by considering the standard deviation of the log price.
Why is this interpreted to mean u = exp(sigma) and d = u^-1 ?
Any help will be appreciated. Thanks!