The article discusses three essays on mutual funds. The first essay shows that the way a fund manager spreads their investments can predict fund performance. Funds with more varied investments tend to perform better, especially when investing in different-sized stocks. The second essay reveals that family mergers can harm mutual fund performance. Acquiring families often keep acquired funds intact, leading to performance declines. The third essay finds that not all team-managed funds underperform; only those with poor accountability do. This suggests that holding fund managers accountable can improve fund performance.