New framework reveals best way to measure financial performance contributions.
The article discusses different ways to measure how much a part of an investment contributes to its overall performance. It looks at three levels of analysis: how a part of an investment affects the total return for a single day, how the total return for a day affects the total return over multiple days, and how a part of an investment affects the total return over multiple days. By comparing various methods, the article determines which one best captures the intended meaning at each level.