Question
Consider the Black-Scholes model with stock price process S(t) = S(0) exp(( ^2/2)t + B(t)); where t 0 is the time (in years), B(t) is
Consider the Black-Scholes model with stock price process
S(t) = S(0) exp(( ^2/2)t + B(t));
where t 0 is the time (in years), B(t) is a standard Brownian motion, is the drift, and > 0 is the volatility of the stock. If = 1.1157, = 2.0402 and the stock price on January 1 is S(0) = 13/10,
(a) Determine the probability that the stock price is below 0.66 on September 1 of that year.
(b) How does the result in a) change if you know that the stock price is equal to 0.66 on December 1 of that year?
(c) How does the result in a) change if you know that the stock price is equal to 0.66 on March 1 of that year?
(d) Determine the probability that the stock price is below 0.55 on September 1 of that year and larger than 0.99 on January 1 of next year.
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