NO.PZ2020021205000056
问题如下:
A stock price is currently 40. At the end of six months it will be either 36 or 44. The risk-free rate is 5% per annum with continuous compounding.there is a six month European put option with a strike price of 40,what position should be taken in the stock to hedge a long position in the option?
选项:
解释:
The position is long 0.5 shares. This is because 0.5 shares plus the long put option is worth 22 for both outcomes.
另外,我算出来的HR是-0.5,为什么是long一个stock?,怎么判断long还是short,call的话会不同么?