Answer:
The answer is: underperform passive fixed-income indexes by an amount equal to fund expenses
Step-by-step explanation:
According to Blake, Elton, and Gruber (The Journal of Business, 1993), the only people who benefit from actively managed bond mutual funds are those that work for the mutual funds and not their clients.
They discovered that when the mutual funds increased their fees in 1%, the total performance decreases in 1%.