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veronica_gxy · 2021年05月12日

请问这题用李老师推导的公式怎么算

NO.PZ2016021705000036

问题如下:

An analyst gathered the following information about a private company and its publicly traded competitor:

Using the pure-play method, the estimated equity beta for the private company is closest to:

选项:

A.

1.029.

B.

1.104.

C.

1.877.

解释:

C  is correct.

Inferring the asset beta for the public company: unlevered beta = 1.75/[1 + (1 0.35) (0.90)] = 1.104. Relevering to reflect the target debt ratio of the private firm: levered beta = 1.104 × [1 + (1 0.30) (1.00)] = 1.877.

请问用截图中的这个公式怎么求解
1 个答案

王琛_品职助教 · 2021年05月16日

嗨,努力学习的PZer你好:


同学截图的公式,属于推导过程,用于理解最后的公式,如果是做题,建议直接按最后的公式代入计算即可

公式,请参考原版书 P96 的公式 9 和 10

比如第一步,计算 unlevered beta,你把黄色填充的公式,左右两遍同时除以 [D(1-T)+E],就是计算 asset beta

第二部,计算 levered beta,你把黄色填充的公式,左右两遍同时除以 E,就是计算 levered beta

需要注意的是,第一步和第二步中,代入的 D/E 比例不同,第一步代入 0.9,第二步代入 1

解题思路,请参考:https://class.pzacademy.com/qa/20247

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