NO.PZ2018110601000031
问题如下：
Wang uses a cost–benefit approach to rebalancing and recommends that global equities have a wider rebalancing range than the other asset classes.
Wang’s approach to rebalancing global equities is consistent with:
选项：
A.the Wang’s being risk averse.
B.global equities’ having higher transaction costs than other asset classes.
C.global equities’ having lower correlations with other asset classes.
解释：
B is correct.
考点：影响rebalancing range的因素.
解析：rebalancing corridor width与以下因素正相关：交易成本、税收、风险容忍度、与其它资产类型的相关性。与以下因素负相关：自身的波动率，其它资产类型的波动率。
global equities有更宽的rebalancing range，所以可能的原因为：投资者风险容忍度高，交易成本偏高，与其它资产类型的相关性高。所以只有B正确。
与其他资产相关性低说明diversification天然比较好 所以有wider range 为什么这样理解不对呢？谢谢
