精 第5題,從經(jīng)濟學(xué)公式X-M=(S-I)+(T-G)來看,如果經(jīng)常賬戶赤字增加,不是意味著該國投資大于儲蓄,或政府支出大于稅收么,那么整體環(huán)境應(yīng)該是好的,應(yīng)該有利于資本的流入吧?為什么答案是反過來去赤字減少或盈余的國家呢?
精 老師,給最新的信息更高權(quán)重為什么不是availability bias呢?
精 這里第二題的意思是三種方法都適用嗎?沒太理解,能否在講解下
精 老師,這是我在題目的答案中總結(jié)的關(guān)于蒙特卡洛模擬的以下5個優(yōu)點,麻煩老師講解下如何通俗的理解一下,不然總是記不住? (1)Monte Carlo simulations allow for portfolio rebalancing under changing tax rates and in multi-period situations. Finnegan’s effective tax rate will likely increase sharply when she starts a new job. MVO does not consider these factors. (2)Monte Carlo simulations can compute path-dependent terminal wealth;(路徑依賴是什么意思?) (3)Monte Carlo simulation is able to incorporate the effect of changes to variables over time. MVO is a single-period framework (4)Monte Carlo analysis allows Loucks to analyze different rebalancing policies and their costs over time (5)Monte Carlo can incorporate statistical properties outside the normal distribution, such as skewness and excess kurtosis, It can also be incorporated in alternative investments (such as private equity, real estate, and commodities),
精 這個不是net wealth嗎?
精 本來不就是稅后range就比稅前寬啊,有成本嘛,老師講說是稅后波動率比稅前小,所以range寬。
精 老師,R5的稅的rebalancing range的非對稱特點,怎么理解?為什么是下限窄、上限寬?
精 這個swan的說法,需要optimize。圖上給了90%的expected return,那根據(jù)股債的weight,以及目標(biāo)的收益率,不是能解除唯一解,為什么還要優(yōu)化?
程寶問答