The current price of a non-dividend-paying biotech stock is $140 with a volatility of 25%. The risk-free rate is 4%. For a three-month time step:
(a) What is the percentage up movement?
(b) What is the percentage down movement?
(c) What is the probability of an up movement in a risk-neutral world?
(d) What is the probability of a down movement in a risk-neutral world?
Use a two-step tree to value a six-month European call option and a six-month European put option. In both cases the strike price is $150.
u=13.31
d=11.75
the probability up =0.5089
the probalility down=0.4911
how to do the tree for valuing the tree and show me step by step.