NO.PZ2024021803000048
问题如下:
Using a one-period binomial model, what is the risk-neutral probability of a price increase for an underlying asset with a current price of $16.00, an upward end of period price of $22.00, a downward end of period price of $12.00, and a risk-free rate of 4.0%?选项:
A.0.38 B.0.46 C.0.54解释:
u=22/16=1.375,d=12/16=0.75, π=(1+4%-0.75)/(1.375-0.75)=0.464
这题目第一步要求出u/d, 然后再用u/d 求出“派”
我不太理解为什么u =s+/so
我的理解是: so*(1+u)=s+. 所以u=s+/so -1. 不知道我的理解哪里错了。
还有一点疑问,请问u和d 需要满足u+d=1吗?