NO.PZ201712110100000201
问题如下:
Strategy 1 would require Nuñes to buy:
选项:
A.shares of IZD.
a put option on IZD.
a call option on IZD.
解释:
C is correct.
To construct a synthetic long put position, Nuñes would buy a call option on IZD. Of course, she would also need to sell (short) IZD shares to complete the synthetic long put position.
中文解析:
根据C+k=P+S可知
P=C-S,即long put= long call +short stock。K是买了一个无风险债券,在考虑头寸的时候可以忽略。构建一个long put头寸需要买call和卖stock,因此A选项说的是买stock,A错;C选项说的是买call,是对的,虽然表述的不完整,但是在构建put的时候,单独考虑call option,的确是应该买入的,所以选C。
选项里有long put,为什么不直接选long put呢?