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求助一道期权的题,各位大神,请多帮忙
You have a stock trading at $60. The stock follows a lognormal distribution with drift of 10% and volatility of 40%. The risk free rate is 2%.
(1) What is the probaility of a 4-month 55 put to expire in the money? Find N(-d2). Compare the results.
(2) What is the risk-neutral probaility for a 4-month 55 put to expire in the mone? Find N(-d2). Compare the results.
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