请问为什么计算的是forward P/E呢？

问题如下：

Kirk, a researcher in a securities company, wants to rank the relative value of companies he covers by their forward PEG ratio. The information on companies are shown below:

According to the information above and ranking by PEG ratio, which company is the most attractive one and which company is the least attractive one?

选项：

A.

Most attractive: Company A; Least attractive: Company C

B.

Most attractive: Company D; Least attractive: Company B

C.

Most attractive: Company B; Least attractive: Company D

解释：

B is correct.

考点：考察应用PEG进行relative value比较

首先根据信息计算Forward P/E：

Company A：32/1.65=19.4

Company B：46/1.20=38.3

Company C：77/3=25.7

Company D：10/2.5=4

然后计算各自的Forward PEG：

A：19.4/15=1.29

B：38.3/18=2.13

C：25.7/22=1.17

D：4/7=0.57

当用PEG比较时，PEG越小则代表其越被低估。因此按PEG标准，公司D是最好，公司B最差。