High mutual fund fees cost investors $125 billion in lost value.
The study found that high fees in mutual funds can lead to significant wealth losses for investors, even when lower-fee options are available. Despite the belief that fees don't matter due to fund size adjustments, the research shows a strong link between fund performance and fees. The mutual fund industry has seen a total value loss of $125 billion due to high fees, highlighting the importance of fee dispersion for investors.