Reading 44 ■ Using Multifactor Models中的
Active risk squared = Active factor risk + Active specific risk
Active factor risk可以理解成“资产分配风险Asset Allocation”(买债券、还是买股票),Active specific risk可以理解成(选股风险Securities Selecion)具体买哪一只股票,例如保利还是万科。这样的理解正确的吧?
Reading 47 ■ Analysis of Active Portfolio Management
公式(1)讲的是“Asset Allocation”,公式(2)讲的是“Securities Selecion”,这样也没错吧?
所以reading 45和reading 47讲的都是“Asset Allocation”和“Securities Selecion”;不同之处是reading 45侧重于risk,而reading 47讲return。我的理解对吗,谢谢!