38 题是计算Residual Income,我觉得按照公式,计算2008年的RI应该用2007年的Book Value,又因为题目给出了符合Clean Surplus原则,因此2007年的Book Value(2007) = Book Value(2008) - [NI(2008) - Div(2008)] = 8125 - (975 - 812*0.6) = 7637.2, 然后用这个Book Value计算RI (2008) = 975 - 12%*7637.2 = 58.54 而不是0.
55题我觉得这个不应该是Macromeonomic model,按照书上所说,M模型的intercept应该是用APT这样模型计算出来的期望回报率而不是无风险利率,而按照题目的内容,显然这个模型为RF + b1SupriceGDP + b2SurpriseInflation,感觉不伦不类,既不完全是M模型也不完全是APT模型. 题目有些问题.
还望高手指教!
[此贴子已经被作者于2010-6-3 16:14:31编辑过]
38题
感觉你是对的。相信你知道如果考试时遇到这种情况你知道会怎么做。
55题
我问过cfa insititute 同样的问题,因为在他们教材的例子中,也有混着写的情况。他们的答案也是比较模糊,基本上的意思是有很多model,你不要太较真。如果问你macroeconomic model 的intercept 是什么,你就回答camp计算的expected rate of return. 如果没问你,那你就给出一个最接近的答案吧。 因为另外的两个选项更不对。
[此贴子已经被作者于2010-6-3 16:24:06编辑过]
Assume the following model is applying to an asset
APT
E(Ri)=Rf+b1(Rm-Rf)+b2a2+b3a3+...+bnan+e
Macroeconomic model
Ri=E(Ri)+b'1a'1+b'2a'2+...+b'na'n+e
"where E(Rp) is the expected return from APT equilibrium in the absence of any surprises (of course market premium is included as well, so using CAPM will result the same.)"
the absence of any surprise do not apply to the market risk premium.
In the APT model , the market risk premium = Rm- Rf
In the macro economic model, there is no market risk premium,only hava'1,a'2, which are the surpriese = actural factor figure- predicted factor figure ( which is not the Rf)
So if there is no surprise in any other factor, assum a'1,a'2..=zero
Macroecomoic model Ri=E(Ri)=Rf+b1(Rm-Rf)+b2a2+b3a3+...+bnan+e
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