Better Kept in the Dark? Portfolio Disclosure and Agency Problems in Mutual Funds

We study the agency implications of increased disclosure using a regulatory change in the mutual fund industry as an experimental setting. This quasi-natural experiment mandated more frequent portfolio disclosure, which we show imposes managerial skill-reassessment risks from investors on funds with high relative performance volatility. In turn, this risk translates into greater agency costs to investors. We show that high-volatility funds, relative to low-volatility funds, responded to the increased skill-reassessment risk after regulation with an increase in management fees and a decrease in risk taking. These actions get transmitted to fund investors in the form of inferior net performance.