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ciaoyy · 2019年01月03日

问一道题:NO.PZ2015121810000021

问题如下图:

    

选项:

A.

B.

C.

解释:


题干中提到portfolio building,为什么不是TC呢?TC也涉及用μ--anticipated future returns啊?

1 个答案
已采纳答案

Shimin_CPA税法主讲、CFA教研 · 2019年01月03日

IC体现基金经理预测未来的准确性, TC体现基金经理将想法转换为实际的能力。

可以对比下一题,2015121810000022 ,这一题考了TC。我把关键词标黄了。

IC:

TC:

粉红豹 · 2019年03月20日

老师,这两句话两种问法,仍然很难区分。。。。都有building,都有anticipate returns,能不能帮忙总结区分下?

Shimin_CPA税法主讲、CFA教研 · 2019年03月20日

我个人觉得这两个词,TC是更好判断的。因为TC指的是投资是否受到限制,比如禁止short sale,单个资产投资不能超过20%,有了限制所以基金经理不能把想投资的转为现实,所以下一题里面说make full use of their ability指的就是这个意思;还有一个点就是efficient,如果市场上的限制越多,市场就不那么有效的。IC就是预测准不准,它只跟收益率有关,看实际的超额收益率与预测的超额收益率的相关性。

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NO.PZ2015121810000021 Manager 2 Manager 3 C is correct. The proper statistic to calculate is the information coefficient, anit is finefollows: IC=COR(RAiσi,μiσi)IC=COR(\frac{R_{Ai}}{\sigma_i},\frac{\mu_i}{\sigma_i})IC=COR(σi​RAi​​,σi​μi​​) A manager is a gooforecaster if his or her ex-ante active return expectations (forecasts) are highly correlatewith the realizeactive returns. The information coefficient requires ththese forecasts anrealizereturns risk-weighte When this is ne for the three managers, the risk weighteforecasts anrealizereturns are: The Iare founcalculating the correlations between eamanager’s forecasts anthe realizerisk-weightereturns. The three managers have the following ICs: Manager 3 hthe highest I考点: The FunmentLof Active Management 解析三个基金经理都声称自己擅于预测收益率,而题目问哪个基金经理预测未来收益率能力最强,因此衡量指标是IC,也就是调整风险后的forecasteactive returns与realizeactive returns之间的相关性。IC越大,预测能力越强。 计算公式为 IC=COR(RAiσi,μiσi)IC=COR(\frac{R_{Ai}}{\sigma_i},\frac{\mu_i}{\sigma_i})IC=COR(σi​RAi​​,σi​μi​​) 。如英文答案中的表格所示,首先计算Risk-weighteforecasts return和Risk-weighterealizereturn,然后使用计算器求correlation 以Manager 1为例 首先清除历史记录【2n【7】【2n【CLR WORK】 依次输入两组数据X01=0.176【↓】Y01=0.353【↓】X02=0.400【↓】Y02=0.700【↓】X03=0.417【↓】Y03=0.333【↓】X04=0.240【↓】Y04=0.080 求出相关性系数【2n【8】一直按向下的箭头,直到出现r,r=0.5317。(与英文答案略有差异,是保留小数点的误差。) 请问前面的权重不管了吗?

2021-07-04 11:38 1 · 回答

NO.PZ2015121810000021 C is correct. The proper statistic to calculate is the information coefficient, anit is finefollows: {$table2} A manager is a gooforecaster if his or her ex-ante active return expectations (forecasts) are highly correlatewith the realizeactive returns. The information coefficient requires ththese forecasts anrealizereturns risk-weighte When this is ne for the three managers, the risk weighteforecasts anrealizereturns are: {$table3} The Iare founcalculating the correlations between eamanager’s forecasts anthe realizerisk-weightereturns. The three managers have the following ICs: {$table4} Manager 3 hthe highest IC 我看到是这样的,没有table显示

2021-05-14 00:14 1 · 回答

NO.PZ2015121810000021 X01=0.176【↓】Y01=0.353【↓】X02=0.400【↓】Y02=0.700【↓】X03=0.417【↓】Y03=0.333【↓】X04=0.240【↓】Y04=0.080 老师,这一排数字怎么来的额?

2021-04-28 19:40 1 · 回答

NO.PZ2015121810000021 老师好 如果这题C 算出的correlation = -0.67 的话, 还是选C 吗? 负的话说明是 负相关,也就是说这经理越策能力很差。忘记比较CORR是比绝对值还是不是, 感觉应该不是比较绝对值,但想确认一下。谢谢。

2021-04-05 14:37 1 · 回答

按题目的意思,这是在说组合的建立与预期收益率之间的关系吧?应该是TC啊。 并不是预测超额收益率与实际超额收益率之间的关系啊

2020-06-29 15:43 2 · 回答