題目里面說的應(yīng)該是提前3年退休呀 答案里面的提前5年是不是又搞錯了
老師,這題能否解答下。答案中說如果是pairwise correlations不高的話,線性關(guān)系也可能高,能否結(jié)合下這道題目,解釋下這兩者關(guān)系如何理解。
14題的representative bias不算是不是因?yàn)閏hildhood financial hardship不是最近發(fā)生的事?
R7課后題第15題:為什么Municipal Bond 的post-tax return不用乘以(1-25%)?還有題干中的without taking onadditional incremental risk怎么理解?答案好像也沒有分析這一點(diǎn)
直播課講的這個題,原則跟課上學(xué)的這個有沖突嗎?課上學(xué)的是在限制做空時,產(chǎn)生corner portfolio,有rf就是rf+SR最大的p,沒有rf就是相鄰p。這道題的考點(diǎn)重心不太懂。
為什么同樣加總FRM就對,CFA就不等于總組合的風(fēng)險?
small cap的寫錯了吧?
reading 7 Question 15
原版書Reading6例題2,組合構(gòu)建
老師好,想問下,為什么(Ri-Rf)/MCTRi會等于Tangency Portfolio的Sharp Ratio呢?也就是Max的Sharp Ratio,謝謝
AA 原版書 第261頁,example 6第3題:An assertion is heard in an investment committee discussion that because the Sharpe ratio of diversifying strategies (0.55) is higher than real estate’s (0.50), any potential allocation to real estate would be better used in diversifying strategies. Describe why the argument is incomplete. 這道題是怎么理解?
在AA 原版書中 有這么一段話:Pairwise asset class correlations are often useful information and are readily obtained. However, in evaluating an investment’s value as a diversifier at the portfolio level, it is important to consider an asset in relation to all other assets as a group rather than in a one-by-one (pairwise) fashion. It is possible to reach limited or incorrect conclusions by solely considering pairwise correlations. 該怎么理解呢?
官網(wǎng)2下午題22題
183,謝謝老師
在反優(yōu)化過程中,計(jì)算Implied return時用到的方差、協(xié)方差是怎么計(jì)算出來的?如果還是來自于歷史數(shù)據(jù),是否并未完全解決傳統(tǒng)MVO對初始數(shù)據(jù)極端敏感的問題?
程寶問答