问题如下:
Determine the value at expiration and the profit for a seller if the price of the underling at expiration is $52.
选项:
A.–$2
B.$5
$2
解释:
C is correct.
–CT = –Max(0,ST – X) = –Max(0,52 – 50) = –2 Π = –CT + C0 = –2 + 4 = 2
不明白,为什么是加4?不是应该-4吗?成本是4元呀。现在是赚了2元,但是买option的成本是4元,所以应该是2-4=-2,这样对吗