TWR and MWR in Action
To understand the difference between the two types of returns, consider the following hypothetical examples of three investors: Lori, Sheslie and Spencer. In each case, an initial investment is made on January 1, the markets declined by 4% between January 1 and June 30, and then rose by 7% between July 1 and December 31.
In the first scenario, Lori made no changes to her account over the year. In the second scenario, Sheslie was worried about the market decline and withdrew some of her investment on June 30. In the third scenario, Spencer saw the decline as an opportunity and made an additional investment on June 30.